ENGR. DR. UBONG S. UKOMMI

SENIOR LECTURER,

DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING,
FACULTY OF ENGINEERING
AKWA IBOM STATE UNIVERSITY

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Engr. Dr. Ubong Ukommi, is a communication engineer with deep interest in teaching, project management, engineering research and development. I have over ten years of experience in research and development, providing advanced expertise in communication systems and characterization; satellite and multimedia broadcast solutions for improved quality of communication experience. I have over thirty (30) technical publications in Communication Engineering.

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Currently, I am a senior lecturer since October 2017 in the Department of Electrical and Electronic Engineering, Akwa Ibom State University, Ikot Akpaden, Akwa Ibom State, Nigeria. I obtained my first degree, Bachelor of Engineering (B.Eng) in Communication Engineering from the Department of Electrical and Electronic Engineering, Federal University of Technology Owerri (FUTO), Nigeria in 2004. In 2008, I obtained my master degree (M.Sc) in Mobile and Satellite Communications from the University of Surrey, Guildford, United Kingdom. Having completed my M.Sc programme, I further enrolled in the school of postgraduate studies, University of Surrey, Guildford, United Kingdom, where I completed my Doctor of Philosophy (Ph.D) programme in Electronic Engineering (Communication Engineering) from the Department of Electronic Engineering. In order to enhance my productivity as a competent research project engineer, I enrolled and completed a professional certification in project management methodology from APMG-International, United Kingdom. I am actively involved in the activities of Association of Consulting Engineers in Nigeria (ACEN) and Council for the Regulation of Engineering in Nigeria (COREN). At the global level, I have made technical presentation and publications of significant research findings in reputable journals and conferences in London, United Kingdom, California, United States of America, and Abuja, Nigeria. Industrially, I started my career with the Nigeria Television Authority (NTA), Zamfara State, where I developed interest in broadcasting and communication engineering. Having completed my MSc programme in mobile and satellite communications engineering, I worked for Viewsat Limited, Guildford, United Kingdom, where I served as a team member consulting and developing solutions for improved quality of communication experience. I also led the design of “Ground Station” project at the University of Surrey, United Kingdom. The project was funded by the University of Surrey and Surrey Satellite Technology Limited, United Kingdom, and was designed to facilitate ground control stations to communicate better with spacecraft and share information with astronauts via the internet to increase the effectiveness of future space mission.

AREAS OF INTEREST: Electronic Communication Engineering, Multimedia communications, Mobile and Satellite Communications and Sustainable Energy System.

  • October 2022-Present
    CURRENT POSITION
    Acting Head, Department of Electrical and Electronic Engineering, Akwa Ibom State University, Ikot Akpaden, Akwa Ibom State
  • January 2008 - January 2013
    RESEARCH OFFICER
    Centre for Communication Systems Research (CCSR), University of Surrey, Guildford, United Kingdom. Investigation of impact of content motion intensity on received quality of mobile video communication Development of adaptation techniques for improved quality of wireless multimedia communication.
  • Jan 2010 - October 2012
    LABORATORY DEMONSTRATOR
    Department of Electronic Engineering, University of Surrey, Guildford, United Kingdom.
  • Sept. 2004 - August 2005
    TRANSMISSION AND CONTROL ENGINEER
    NYSC. Communication and Braodcasting Engineering, Nigerian Television Authority (NTA), Gusau, Zamfara State.
  • University of Surrey, Guildford, England, United Kingdom.
    Ph.D; Electronic Engineering (Communication Engineering option)
  • University of Surrey, Guildford, England, United Kingdom.
    M.Sc; Mobile and Satellite Communications
  • Federal University of Technology, Owerri, Imo State, Nigeria.
    B.Eng; Electrical and Electronic Engineering (Communication Engineering Option)

WORKING EXPERIENCE

RESEARCH

MSc Dissertation:

Adaptation Techniques for Improved Quality of Wireless Multimedia Communication. Investigation and development of adaptation technologies for improved quality of communication experience. University of Surrey, United Kingdom.

MSc Dissertation:

Ground Station Design for Satellite Communication. A design which was used in July 2009, as a test site to demonstrate the capabilities of the European Space Agency's GENSO software system. The ground station was designed to allow ground control stations to communicate better with spacecraft and share information with astronauts via the internet with the aim of improving the effectiveness of future space missions. University of Surrey, United Kingdom.

Eng, Undergraduate Final Year Project:

Design and construction of a wireless transceiver for communication. An undergraduate research project submitted to the Department of Electrical and Electronic Engineering, School of Engineering and Engineering Technology, Federal University of Technology, owerri, Imo State, Nigeria, 2004. Federal University of Technology, Owerri, Imo State, Nigeria.

UNIVERSITY TEACHING EXPERIENCE

Postgraduate courses taught and credit units

EEE 852: Advanced Digital Communications

3

EEE 862: Advanced Satellite Communication Techniques

3

EEE 872: Radio Frequency Systems and Microwave Engineering

3

EEE 861: Mobile Communication Networks and Systems

3

EEE 861: Mobile Communication Networks and Systems

3

EEE 861: Mobile Communication Networks and Systems

3

EEE 861: Mobile Communication Networks and Systems

3

Undergraduate courses taught and credit units

EEC 552: Radio Frequency and Microwave Fundamentals

2

EEC 511: Digital Communications

3

ENG 411: Numerical Analysis for Engineers

3

EEE 341: Electromagnetic Fields and Waves

3

EEE 352: Electronic and Communication Laboratory I

1

EEE 232: Digital Systems Fundamentals

3

ACTING APPOINTMENT HELD WITHIN THE UNIVERSITY

March 2006 - Date

Acting Head, Department of Electrical and Electronci Engineering, Akwa Ibom State University, Ikot Akpaden, Akwa Ibom State, Nigeria

2022 - date

Departmental Postgraduate Coordinator, Department of Electrical and Electronic Engineering, Akwa Ibom State University

2018 - 2022

Chairman, Faculty Research Board, Faculty of Engineering, Akwa Ibom State University Staff Adviser, Faculty of Engineering, Akwa Ibom State University

2015 - 2022

Welfare Coordinator, Faculty of Engineering, Akwa Ibom State University

2015 -2022

Chairman, Departmental Misconduct and Disciplinary Committee, Department of Electrical and Electronic Engineering, AKSU Member (Electrical and Electronic Consultancy) task force committee for the Construction of Administrative Building in Akwa Ibom State University, AKSU.

2017

Member (Electrical and Electronic Consultancy) task force committee for the Construction of Econometric Laboratory, Obio Akpa Campus, Akwa Ibom State University, AKSU.

2018

Member, Task Force for the Construction of University Main Entrance Complex, AKSU, .

2019

Member (Electrical and Electronic Consultancy), Task Force for the Construction of Faculty Biological Science Complex, AKSU.

2019

Member (Electrical and Electronic Consultancy), Task Force for the Construction of Entrepreneurship Centre, AKSU.

2018

Member (Electrical and Electronic Consultancy) Task Force for the Construction of School of Postgraduate Studies Building, AKSU.

2019

CONSULTANCY OUTSIDE THE UNIVERSITY

Examiner, Nigerian Society of Engineers (Electrical and Electronic Engineering) Professional Examination into corporate membership of the Nigerian Society of Engineers (April and September Diets), Uyo Branch, Akwa Ibom State.

2019 - 2021

Ex-Officio Member, Nigerian Society of Engineers, Uyo Branch, Akwa Ibom State.

2017-2020

Technical Secretary, Nigerian Society of Engineers, Uyo Branch, Akwa Ibom State.

2015-2022

Career Counsellor, Nigerian Society of Engineers, Uyo Branch, Akwa Ibom State.

2015-Date

Guest Presenter, MTN Telecommunications Limited, on the topic “Information and Communication Technology (ICT) as a Critical Economic Enabler” Marking World Communications Day.

2020

Electrical and Electronic Engineering Supervisory Consultant for the Design and Construction of 21-Storey High Rise Tower Project at Banking Layout, Udoudoma, Uyo, Akwa Ibom State, Nigeria.

2018-2021

Client: Akwa Ibom State Government Project worth: Over twenty billion (N20 Billion) Naira.

Electrical and Electronic Engineering Supervisory Consultant, for the Design and Construction of Saint Gabriel Coconut Refinery, Mkpat Enin L.G.A., Akwa Ibom State.

2019-2021

Client: Akwa Ibom State Government Project worth: Over five billion (N5 Billion) Naira.

Electrical and Electronic Engineering Supervisory Consultant for the Design and Construction of Victor Attah International Airport Terminal Facility, Akwa Ibom State.

2019

Client: Akwa Ibom State Government Project worth: Over twenty five billion (N25 Billion) Naira.

MEMBERSHIP OF PROFESSIONAL BODIES/ASSOCIATION
WORKS SUPERVISED

COREN

Council for the Regulation of Engineering in Nigeria
Nigeria (R.28253)

NIEEE

The Nigerian Institution of Electrical and Electronics Engineers
29952

NSE

Nigerian Society of Engineers
Abuja, Nigeria (98162254)

IET

Institution of Engineering and Technology
London, UK (98162254)

IEEE

Institution of Electrical & Electronics Engineers
USA. (4152991).

IAEng

International Association of Engineers
Worldwide (126015)

RTS

Royal Television Society
London, United Kingdom (69610)

RASO

Radio Amateur Satellite Organization United Kingdom (6726)

Vincent B. Umoh

A Comparative Analysis of User Experienced Mobile Broadband Performance in Nigeria. Akwa Ibom State University.
MEng 2022

Ekanem N. Kufre

Rainfade Analysis and Mitigation Technique for Satellite Communication Links. Akwa Ibom State University.
MEng 2022

David S. Alonge

Suitability of Multi-Layer Polymeric Coating for Protection of Offshore Pipelines and Structures. Offshore Technology Institute (OTI), University of Port Harcourt, Rivers State.
MEng 2022

Martha V. Edet

Network Densification and Capacity Backfilling Simulations for 5th Generation Communications Network. Akwa Ibom State University.
MEng 2022

Regina A. Udoh

Analysis of Co-channel and Adjacent Channel Interference Mitigation Techniques in Cellular Networks. Akwa Ibom State University.
MEng 2022

PUBLICATIONS

SELECTED CONFERENCE/WORSKSHOP/PUBLICATIONS

K. Ekanem, E. Ubom and U. Ukommi

"Analysis of Rain Attenuation for Satellite Communication in Akwa Ibom State, Nigeria," International Conference and Exhibition on Power and Telecommunication (ICEPT 2022), Nigerian Institute of Electrical and Electronic Engineers (NIEEE), 2022.

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V. B. Umoh, U. Ukommi and U. M. Ekpe

"A Simplified Method for Extended Duration Measurements of Mobile Broadband Performance", 2022 IEEE Nigeria International Conference on Disruptive Technologies for Sustainable Development (NIGERCON), 2022.

Download

Mfonobong Uko, Sunday Ekpo, U. Ukommi and Rupak Kharel

“Shadowing Effect on the Area Spectral Efficiency of a Macro-Femto Heterogeneous Network for Cell-Edge Users”, Proceedings 31st Annual Review of Progress in Applied Computational Electromagnetics, Virginia, USA, March 2015.

Download

U. Ukommi, K. Kodikara Arachchi, Safak Dogan and A.M. Kondoz

“Content-Aware Bitrate Adaptation for Robust Mobile Video Services”, IEEE International Symposium on Broadband Multimedia Systems and Broadcasting, United Kingdom, June 2013.
Download

U. Ukommi

“Adaptation Scheme for Improved Multimedia Communication”, World Congress on Engineering and Computer Science, 2015, October, 2015. Download

Rapporteur, 2021 Nigerian Society of Engineers Conference

Rapporteur, 2021 Nigerian Society of Engineers Conference, ‘Sustainable Infrastructural and Industrial Development in Akwa Ibom State – The Critical Role of Engineers”. Organised by The Nigerian Society of Engineers (NSE), Uyo Branch, Akwa Ibom State (24 - 30, July, 2021). Download

Managing Power and Communication in a Digital Economy.

Managing Power and Communication in a Digital Economy. Organised by The Nigerian Institution of Electrical and Electronics Engineers (NIEEE), Held at Uyo, Akwa Ibom State (October, 2019). Download

Strategic Alliance Amongst Engineering Professionals

Strategic Alliance Amongst Engineering Professionals for Enhanced Opportunities. Organised by COREN, Abuja (19-21 August, 2019). Download

Business of Consulting Engineering

Business of Consulting Engineering, organized by Association of Consulting Engineers in Nigeria (ACEN), Lagos (9-10 September, 2014) Download

CONFERENCES

AFTER LAST PROMOTION

BEFORE LAST PROMOTION

    AFTER LAST PROMOTION ON OCTOBER 1, 2022

  • K. Ekanem, E. Ubom and U. Ukommi,"Analysis of Rain Attenuation for Satellite Communication in Akwa Ibom State, Nigeria'', International Conference and Exhibition on Power and Telecommunication (ICEPT 2022), Nigerian Institute of Electrical and Electronic Engineers (NIEEE), 2022.
  • V. B. Umoh, U. Ukommi and U. M. Ekpe, "A Simplified Method for Extended Duration Measurements of Mobile Broadband Performance", 2022 IEEE Nigeria International Conference on Disruptive Technologies for Sustainable Development (NIGERCON), 2022.

    BEFORE LAST PROMOTION ON OCTOBER 1, 2022

  • Mfonobong Uko, Sunday Ekpo, U. Ukommi and Rupak Kharel, “Shadowing Effect on the Area Spectral Efficiency of a Macro-Femto Heterogeneous Network for Cell-Edge Users”, Proceedings 31st Annual Review of Progress in Applied Computational Electromagnetics, Virginia, USA, March 2015.
  • U. Ukommi, K. Kodikara Arachchi, Safak Dogan and A.M. Kondoz, “Content-Aware Bitrates Adaptation for Robust Mobile Video Services”, IEEE International Symposium on Broadband Multimedia Systems and Broadcasting, United Kingdom, June 2013.

BOOKS

BOOKS PUBLISHED (CO-EDITED AND AUTHORSHIP)

AFTER LAST PROMOTION

BEFORE LAST PROMOTION

    AFTER LAST PROMOTION ON OCTOBER 1, 2017

  • G. Ansa, U. S. Ukommi and et al, “Computer Applications”, Bill Fred Limited, Printing and Publishing, Owerri, Imo State, Nigeria, First Edition, 2019. ISBN: 978-8112-05-6

    BEFORE LAST PROMOTION ON OCTOBER 1, 2017

  • U. Ukommi, “Adaptation Scheme for Improved Multimedia Communication”, Lecture Notes in Engineering and Computer Science, Volume 1, pp. 526-528, October, 2015.
    Publisher: Newswood Limited, Hong Kong.
    ISBN: 978-988-19253-6-7; ISSN: 2078-0958.
  • U. Ukommi, “Content-based Unequal Error Protection Scheme for Enhanced Wireless Video Broadcast”, Lecture Notes in Engineering and Computer Science, Volume 1, pp. 508-511, October, 2013.
    Publisher: Newswood Limited, Hong Kong.
    ISBN: 978-988-19252-3-7
  • U. Ukommi, ''Adaptation Techniques for Improved Quality of Wireless Multimedia Communications'' Publisher: University of Surrey, United Kingdom, January 2013.
    ISBN: 99513596302346
    (PhD Thesis, published by the University of Surrey, United Kingdom)

JOURNAL ARTICLES

AFTER LAST PROMOTION ON OCTOBER 1, 2022

October, 2022.

O. Onwunah, R. Udoh and U. Ukommi, ''Modelling of the Energy Level and Outage Analysis for Battery-powered IoT Sensor Node with Soar Energy Harvester'', International Multilingual Journal of Science and Technology (IMJST), Volume 7 Issue 10.


Download

August 2022.

O. Olurope, U. Ukommi and R. A. udoh, 'Comparative Coverage and Horizon Plane Analysis for LEO, MEO, GEO and HEO Satellites'', Journal of Multidisciplinary Engineering Science and Research (JMESR),Volume 1 Issue 2.


Download

July 2022

E. Ubom, U. Ukommi and A. Ekanem, "Effect of Site Characteristics on Calibration Quality of Indoor Positioning System", International Journal of Engineering Research and Technology (IJERT), Volume 11, Issue 7.


Download

June 2022

U. Ukommi, E. Young and C. Uchegbu, "Determination Of Visibility Time For Geodesic Satellites Orbiting The Earth On Circular Orbit Subject To Minimum Zenith Angle Restriction'', International Multilingual Journal of Science and Technology (IMJST), Volume 7 Issue 6.


Download

May, 2022

V. Umoh, U. Ukommi and U. Ekpe, "A Comparative Study of User Experienced Mobile Broadband Performance", Nigerian Journal of Technology (NIJOTECH), Volume 41, No. 3.


Download

March, 2022

U. Ukommi, "Review of Multimedia Communication Quality Assessment Techniques", Nigerian Journal of Technology (NIJOTECH), Volume 41, No.2.


Download

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March, 2022

R. Udoh and U. Ukommi, "Hata-Okumura Model-Based Characterisation of Propagation Loss For A Market In Urban Area'', Journal of Multidisciplinary Engineering Science and technology (JMEST), Volume 9, Issue 3.


Download

March 2021

U. Ukommi, E. Ubom and Ikpaya, “Ground Station Design for Satellite and Space Technology Development”, American Journal of Engineering Research (AJER), Volume 10, Issue 8, pp-12-19.


Download

November 2, 2021

E. Ubom and U. Ukommi, "Protection Distances for Analogue TV and Cellular Network Coexistence in UHF Band Adjacent Channel Operation'', Journal of Research and Innovations in Engineering, Volume 6.

August 2020

U. Ukommi, Emmanuel Ubom and Idaraesit Abraham, “Outdoor 2.4 GHz Band Wifi Networks Performance Characterization”, International Journal of Engineering Research and Technology, Volume 9, Issue 8.


Download

August 2020

U. Ukommi, “Effect of Motion Intensity on Perceived Quality of Multimedia Communications”, International Journal of Engineering and Advanced Technology, Volume 9, Issue 6.


Download

March 2020

U. Ukommi, M. Enoh and I. Akpan, “Control System Design of Linear Quadratic Proportional-Integral-Plus (LO-PIP) Controller for MIMO Systems”, American Journal of Engineering Research (AJER), Volume 9, Issue 3, pp-219-227.


Download

August 2019.

E. Ubom, A. Akpanobong and U. Ukommi, “Spectrum Occupancy in Rural Nigeria: A Case for a Lightly Licensed Spectrum Band for Rural Broadband Enhancement”, International Journal of Computer Science and Information Technology, Volume 11, No. 4.


Download

BEFORE LAST PROMOTION ON OCTOBER 1, 2022

May 2017

U. Ukommi, “Content-Based Adaptation for Improved Mobile Video Services”, International Journal of Electronics Communication and Computer Engineering, Vol. 8, Issue 3.


Download

April 2017

U. Ukommi, U. Akpan and S. Garba, “Content-Aware Adaptive Mechanism for Improved Digital Multimedia Delivery over Wireless Channel”, Advances in Image and Video Processing Journal, Society for Science and Education, UK, Vol.4, No.2, PP. 31-36.


Download

March 2017

U. Ukommi and M. Uko, “Adaptive Cross-Layer System for Improved Mobile Television Services”, International Journal of Engineering Innovation and Research, Volume 6, Issue 3.


Download

March 2016

U. Ukommi and Emmanuel Ubom, “Hybrid Approach for Efficient Distribution of Television Applications over Wireless Channel”, International Journal of Innovative Research in Science and Technology, USA, Vol.4, No.2.


Download

September 2016

M. Uko, U. Ukommi, S. Ekpo and R. Kharel, “Area Spectral Efficiency of a Macro-Femto Heterogenous Network for Cell-Edge Users under Shadowing and Fading Effects’’, Applied Computational Electromagnetics Society Journal, USA, Volume 31, No. 9.


Download

April 2016

U. Ukommi, Mfonobong Uko and Unwana Ekpe, “Advanced Technique for Improved Mobile Multimedia Communication Services”, Advances in Image and Video Processing Journal, Society for Science and Education, UK, Volume 4, No.2, PP. 31-36.


Download

2013

U. Ukommi, “Smart Broadcast Technique for Improved Video Applications over Constrained Networks”, International Journal of Advanced Computer Science and Applications, USA, Vol.4, No.10.


Download

AFTER LAST PROMOTION ON OCTOBER 1, 2017

October, 2022

O. Onwunah, R. Udoh and U. Ukommi, "Modelling of the Energy Level and Outage Analysis for Battery-powered IoT Sensor Node with Soar Energy Harvester", International Multilingual Journal of Science and Technology (IMJST), Volume 7 Issue 10.


Download

August 2022

O. Olurope, U. Ukommi and R. A. udoh, "Comparative Coverage and Horizon Plane Analysis for LEO, MEO, GEO and HEO Satellites", Journal of Multidisciplinary Engineering Science and Research (JMESR),Volume 1 Issue 2.


Download

July 2022.

E. Ubom, U. Ukommi and A. Ekanem, "Effect of Site Characteristics on Calibration Quality of Indoor Positioning System", International Journal of Engineering Research and Technology (IJERT), Volume 11, Issue 7.


Download

June 2022

U. Ukommi, E. Young and C. Uchegbu, "Determination Of Visibility Time For Geodesic Satellites Orbiting The Earth On Circular Orbit Subject To Minimum Zenith Angle Restriction'', International Multilingual Journal of Science and Technology (IMJST), Volume 7 Issue 6.


Download

May, 2022

V. B. Umoh, U. Ukommi and U. M. Ekpe, "A Comparative Study of User Experienced Mobile Broadband Performance", Nigerian Journal of Technology (NIJOTECH), Volume 41, No. 3.


Download

March, 2022

U. Ukommi, ''Review of Multimedia Communication Quality Assessment Techniques", Nigerian Journal of Technology (NIJOTECH), Volume 41, No.2.


Download

March, 2022

R. A. Udoh and U. Ukommi, "Hata-Okumura Model-Based Characterisation of Propagation Loss For A Market In Urban Area'', Journal of Multidisciplinary Engineering Science and technology (JMEST), Volume 9, Issue 3.


Download

March 2021

U. Ukommi, E. Ubom and Ikpaya, “Ground Station Design for Satellite and Space Technology Development”, American Journal of Engineering Research (AJER), Volume 10, Issue 8, pp-12-19.


Download

November 2, 2021

E. A. Ubom and U. Ukommi, "Protection Distances for Analogue TV and Cellular Network Coexistence in UHF Band Adjacent Channel Operation'', Journal of Research and Innovations in Engineering, Volume 6.

October, 2020

U. Ukommi, "Media Motion-based Resource Distribution for Mobile Video Networking", Nigerian Journal of Technology (NIJOTECH), Volume 39, No.4.


Download

August 2020

U. Ukommi, Emmanuel Ubom and Idaraesit Abraham, “Outdoor 2.4 GHz Band Wifi Networks Performance Characterization”, International Journal of Engineering Research and Technology, Volume 9, Issue 8.


Download

August 2020

U. Ukommi, “Effect of Motion Intensity on Perceived Quality of Multimedia Communications”, International Journal of Engineering and Advanced Technology, Volume 9, Issue 6.


Download

August 2020

Emmanuel A. Ubom, Victor E. Idigo, U. Ukommi, “Primary User Protection Contour and No-Talk Zone Characterization for TV Whitespace Spectrum Reuse in Nigeria”, International Journal of Innovative Technology and Exploring Engineering, Volume 9 Issue 10.


Download

August 2020

Ibiangake E. Akpan, U. Ukommi and Mbetobong C. Enoh, “Experimental-based Performance Investigation of Call Admission Control Schemes in Mobile Network System”, International Journal of Engineering Research and Technology, Volume 9, Issue 8.


Download

March 2020

U. Ukommi, M. C. Enoh and I. E. Akpan, “Control System Design of Linear Quadratic Proportional-Integral-Plus (LO-PIP) Controller for MIMO Systems”, American Journal of Engineering Research (AJER), Volume 9, Issue 3, pp-219-227.


Download

August 2019

E. A. Ubom, A. C. Akpanobong and U. Ukommi, “Spectrum Occupancy in Rural Nigeria: A Case for a Lightly Licensed Spectrum Band for Rural Broadband Enhancement”, International Journal of Computer Science and Information Technology, Volume 11, No. 4,


Download

BEFORE LAST PROMOTION ON OCTOBER 1, 2017

May 2017

U. Ukommi, “Content-Based Adaptation for Improved Mobile Video Services”, International Journal of Electronics Communication and Computer Engineering, Vol. 8, Issue 3.


Download

April 2017

U. Ukommi, U. Akpan and S. Garba, “Content-Aware Adaptive Mechanism for Improved Digital Multimedia Delivery over Wireless Channel”, Advances in Image and Video Processing Journal, Society for Science and Education, UK, Vol.4, No.2, PP. 31-36.

Download

March 2017

U. Ukommi and M. Uko, “Adaptive Cross-Layer System for Improved Mobile Television Services”, International Journal of Engineering Innovation and Research, Volume 6, Issue 3.


Download

March 2016

U. Ukommi and Emmanuel Ubom, “Hybrid Approach for Efficient Distribution of Television Applications over Wireless Channel”, International Journal of Innovative Research in Science and Technology, USA, Vol.4, No.2.


Download

September 2016

Mfonobong Uko, U. Ukommi, Sunday Ekpo and Rupak Kharel, “Area Spectral Efficiency of a Macro-Femto Heterogenous Network for Cell-Edge Users under Shadowing and Fading Effects’’, Applied Computational Electromagnetics Society Journal, USA, Volume 31, No. 9.


Dwonload

April 2016

U. Ukommi, Mfonobong Uko and Unwana Ekpe, “Advanced Technique for Improved Mobile Multimedia Communication Services”, Advances in Image and Video Processing Journal, Society for Science and Education, UK, Volume 4, No.2, PP. 31-36.


Download

2013

U. Ukommi, “Smart Broadcast Technique for Improved Video Applications over Constrained Networks”, International Journal of Advanced Computer Science and Applications, USA, Vol.4, No.10.


Download

RESEARCH

ONGOING RESEARCH

Seamless Adaptive Broadband Access for Improved User Experience

Broadband technology has been established as vital means for social and economic development. Broadband facilitates communication process, educational development and access to information, employment, broadcasting, e-government, e-commerce and e-health. The growing application of cloud computing and internet-based technologies in the society and industries has made broadband system an indispensable tool for development. Unfortunately, the broadband penetration level in Nigeria is relatively low compared to the developed countries. Some factors affecting broadband penetration level in Nigeria include lack of access to affordable broadband system, lack of coverage in rural areas and potential low revenue areas for terrestrial services providers. In this research, investigation of Seamless Adaptive Broadband Access for Improved Users’ Experience is performed. This research models systematic integration of multiple access networks using unique approach to provide sustainable broadband system to anyone, anytime at anywhere in Nigeria.

Evaluation of Rain-Induced Signal Attenuation for Integrated 5G and Satellite Networking for Effective Communication: Case Study of the South South Region of Nigeria

The measurement of rainfall rate quantifies the amount of rain that has fallen per unit time. It is a useful parameter in determining rain attenuation which is a phenomenon relative to frequency that results in performance degradation, increased pathloss and coverage area reduction in satellite communication networks, most especially in the tropics and at frequencies above 5GHz. Understanding this loss will help in network planning and coverage analysis and also provide useful information to satellite communication engineers for efficient network planning and design in the south-south region of Nigeria for reliable and improved quality of satellite communication experience at anywhere at any time within the region.

Adaptive Sustainable Energy System for Telecommunication Systems.

Project: TETFUND Institution-Based Research Project, Akwa Ibom State University


Project Worth: Two Million Naira (N2,000,000.00) Worth. 2019 - Ongoing.
Electrical energy plays significant role at homes, offices, government institutions, private organisation and telecommunication industries. Reliable energy systems enhance productivity and facilitate delivery of core University responsibilities including effective learning, research, educational development and business development. Unfortunately, more than one billion people in the world still have no access to electrical energy and more than 2.9 billion people do not have access to clean energy system. This research project explores the potential of renewable energy sources using adaptive system to supply sustainable electricity for telecommunication systems operations. Renewable energy has considerable potential in Nigeria and could bridge the major energy gaps in the country if properly harnessed.

PUBLICATION WITH ABSTRACTS

AFTER LAST PROMOTION ON OCTOBER 1, 2017

K. Ekanem, E. Ubom and U. Ukommi,"Analysis of Rain Attenuation for Satellite Communication in Akwa Ibom State, Nigeria'', International Conference and Exhibition on Power and Telecommunication (ICEPT 2022), Nigerian Institute of Electrical and Electronic Engineers (NIEEE), 2022

Abstract
Rain attenuation causes loss of signal power at the receiver of a telecommunication system, mainly due to absorption and scattering caused by rain in the transmission medium, especially at frequencies above 10 GHz. Rain-fade and its dynamic fluctuations has constantly been detrimental to received signals, especially in tropical regions known to be prone to heavy rainfall, so therefore rain rate and rain attenuation predictions are vital when designing satellite and terrestrial communication links. This paper presents rain rate and rain attenuation prediction analysis for Uyo (UYY) (5.0°N,7.9128°E) and Eket (KET) (4.60 N, 7.90 E) in Akwa Ibom State of Nigeria using rainfall data collected from Nigerian Meteorological Agency (NIMET) spanning three years between January 2019 to December 2021. Rain rate measurements were carried out using the Chebil and Rahman models, whilst International Telecommunications Union Radio-wave propagation (ITU-R P618-13) models were used for estimating rain-attenuation. Results obtained showed rain rate and rain attenuation predictions for those cities. The three years long-term attenuation obtained for a frequency of 10 GHz was found to be 18.83 dB for Eket and 18.88 dB for Uyo. At a frequency of 30GHz, rain attenuation was also found to be 95.20dB and 94.16dB for Eket and Uyo respectively.

AFTER LAST PROMOTION ON OCTOBER 1, 2017

V. Umoh, U. Ukommi and U. Ekpe, "A Simplified Method for Extended Duration Measurements of Mobile Broadband Performance", 2022 IEEE Nigeria International Conference on Disruptive Technologies for Sustainable Development (NIGERCON), 2022.

Abstract:
Information on mobile broadband (MBB) network performance as experienced by the user is limited. In a bid to fill this information gap, different methodologies and infrastructure have been developed to measure MBB performance around the world. This paper documents a simplified method developed to measure mobile broadband performance over an extended period. In this method, the Raspberry Pi and other commercial-off-the-shelf devices were configured to measure the broadband performance of four major mobile network operators in Nigeria. In particular, the download and upload throughput of respective 3G HSPA+ and 4G LTE networks were measured. The results obtained indicate that the measured broadband performance metrics are below expected peak theoretical values and leaves a lot of room for improvement.

BEFORE LAST PROMOTION ON OCTOBER 1, 2017

Mfonobong Uko, Sunday Ekpo, Ubong Ukommi and Rupak Kharel, “Shadoowing Effect on the Area Spectral Efficiency of a Macro-Femto Heterogeneous Network for Cell-Edge Users”, Proceedings 31st Annual Review of Progress in Applied Computational Electromagnetics, Virginia, USA, 22-26 March 2015.

Abstract
For rural and urban environment, the combined effect of the multiple impairments like multipath fading and shadowing result in faster reduction in the average signal strength as the distance from the single macrocell transmitter increases. These impairments affect the signal power causing users situated in the cell edge to experience poor reception. The deployment of femtocells around the cell edge region has proven to be an effective way of minimizing the shadowing and multipath effects thereby increasing the overall efficiency of any given cellular network. This paper only considered the impairment effect caused by shadowing. A Monte-Carlo simulation process has shown a much improved spectral efficiency for the Macro-Femto network than the macro-only setup. The results show that the area spectral efficiency for the macro-femto network increased to 75 bps/Hz/Km2 for a distance of 300 m when compared to the single macro-only network which was 5.5 bps/Hz/Km2 for the same distance.

BEFORE LAST PROMOTION ON OCTOBER 1, 2017

Ubong Ukommi, K. Kodikara Arachchi, Safak Dogan and A.M. Kondoz, “Content-Aware Bitrate Adaptation for Robust Mobile Video Services”, IEEE International Symposium on Broadband Multimedia Systems and Broadcasting, United Kingdom, June 2013.

Abstract
Mobile video services are gaining popularity as the preferred means of communication in our daily lives due to its flexibility and portability. Wireless channel facilitates delivery and consumption of media content at “anytime” and “anywhere’’. However, the current growth in wireless video services driven by users with insatiable perceived video quality stretches the limited resources beyond nominal limit and deteriorates further on severe congestion. Such scenarios present challenges which include how to efficiently share the constrained-bandwidth among competing media streams to meet the increasing insatiable video quality demand by viewers. This work investigates the effect of content characteristic on received video quality and proposes a scheme for media bitrates adaptation based on the content characteristic. The aim of the study is to devise a strategy for efficient distribution of the limited shared bandwidth resources among competing media streams for improved mobile video services within a fixed limited bandwidth network. Simulations have been carried out in order to evaluate the performance of the proposed scheme. The results obtained, demonstrate the capability and efficiency of the proposed scheme.

AFTER LAST PROMOTION ON OCTOBER 1, 2022.

O. Onwunah, R. Udoh and U. Ukommi, "Modelling of the Energy Level and Outage Analysis for Battery- powered IoT Sensor Node with Soar Energy Harvester", International Multilingual Journal of Science and Technology (IMJST), Volume 7 Issue 10, October, 2022

Abstract
In this paper, modelling of the energy level and outage analysis for battery-powered IoT sensor node with solar energy harvester is presented. The model considered the sensor node that goes through periodic cycles where in each cycle it goes through some states where it draws different amount of current and spends different amount of time. The model focus is on sizing the battery and solar cell and determining how the size of the two components affect the daily energy level of the battery, the outage probability and the excess energy that are lost in the process. The daily solar irradiation dataset is obtained for the site with latitude of 5.05 and longitude of 7.90. The data was extracted from NASA website through the meteorological download tool in PVSyst software. Sample numerical example was implemented with sensor node that has cycle time of 576000 ms, duty cycle of 1 % and average current of 0.628806 mA. The results obtained when the yearly mean of daily solar irradiation value of 4704.6 Wh/m^2 per day was used to size the battery show that to ensure zero power outage the minimum days of autonomy required is 2.6 days with a solar cell area of 3.9cm2. Also, the required battery capacity is 56.3 mAh which will store 2.7 Wh energy when fully charged. On the other hand, when the yearly minimum daily solar irradiation of 593.0 Wh/m^2/day was used, the minimum days of autonomy required is about 0.8 days (less than one day) and the solar cell area of 9.7cm2 is required. The required battery capacity is 17.2 mAh which will store 0.9 Wh energy when fully charged. Generally, the results show that sizing with the mean solar irradiation value and using the minimum irradiation value affect the battery capacity and solar cell size; in the first case, larger battery capacity is required whereas in the second case, larger solar cell size is required. Also, the results show that it is possible to achieve zero power outage even when the battery capacity is less than the daily required capacity.


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AFTER LAST PROMOTION ON OCTOBER 1, 2022.

O. Olurope, U. Ukommi and R. Udoh, "Comparative Coverage and Horizon Plane Analysis for LEO, MEO, GEO and HEO Satellites'', Journal of Multidisciplinary Engineering Science and Research (JMESR),Volume 1 Issue 2, August 2022.

Abstract
In this paper, comparative coverage and horizon plane analysis for LEO, MEO, and GEO and HEO satellites were studied. The focus of the study was to evaluate the variation in the percentage coverage area and horizon plane of earth orbiting satellites with respect to their orbital altitude and elevation angles. Eighteen case study satellites were selected; six from LEO satellites, five from MEO satellites, two from GEO satellites and five from HEO satellites. The six LEO satellites were studied separately while the MEO, GEO and HEO were studied together. The results showed that among the six LEO satellites considered, at elevation angle of zero degree (0º), the percentage coverage area of the earth surface for the LEO 1 satellite (Starlink-1246) with altitude of 269.62 km was 2.03 % while that of LEO 6 satellite (Globalstar M089) with altitude of 1,600.20 km was 10.03 %. Again, the horizon plane for the LEO 1 was 1874.02 km while that of LEO 6 was 4792.99 km. For the MEO, GEO and HEO satellites, the results showed that at elevation angle of zero degree (0º), the percentage coverage area for the MEO 1 satellite (SPIRALE B) with altitude of 14758.66 km was 27.55 % while that of HEO 5 satellite (TESS) with altitude of 236,454.93 km was 48.69 %. Again, the horizon plane for the MEO 1 was 25378.79 km while that of HEO 5 was 485506.32 km. In all, it was found that the maximum coverage area occur at elevation angle of zero degree (0º) and the rate of increase in orbital altitude is higher than the rate of increase in percentage coverage area of the satellites. Again, the rate of increase in horizon plane is lower than the rate of increase in the percentage coverage area. Also, at high altitude, in the case of HEO satellites, the coverage area tends to 50%.


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AFTER LAST PROMOTION ON OCTOBER 1, 2022.

E. Ubom, U. Ukommi and A. Ekanem, "Effect of Site Characteristics on Calibration Quality of Indoor Positioning System", International Journal of Engineering Research and Technology (IJERT), Volume 11, Issue 7, July 2022.

Abstract
The accuracy of an indoor Positioning System in determining the location of an asset depends on its quality of calibration; where sample measurements are taken to allow for a better accuracy on position calculation through measurements of the received signal-strength (RSS) and/or the signal-to-noise-ratio (SNR) between the asset and multiple setup access points (APs) to obtain the device’s true position. This paper evaluates the effect of indoor environment characteristics in calibration quality of an indoor positioning system based on Ekahau’s Real Time Location System (RTLS). Site surveys were conducted on selected test beds and the site maps were calibrated with the Ekahau site survey application. The different test environments presented different characteristics that affected their calibration quality which resulted in considerably high error in asset location positioning within the building. Findings showed that high blockages reduce the calibration quality of the indoor location system and emphasized on physical site surveys and empirical network planning exercises for congested warehouses.
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AFTER LAST PROMOTION ON OCTOBER 1, 2022.

U. Ukommi, E. Young and C. Uchegbu, "Determination Of Visibility Time For Geodesic Satellites Orbiting The Earth On Circular Orbit Subject To Minimum Zenith Angle Restriction'', International Multilingual Journal of Science and Technology (IMJST), Volume 7 Issue 6, June 2022.

Abstract
In this paper, determination of visibility time for geodesic satellites orbiting the earth on circular orbit subject to minimum zenith angle restriction is presented. The visibility time analytical expression is derived with respect to orbital altitude or orbital height of the satellite along with minimum zenith angle restriction. The numerical examples are presented with respect to three geodetic satellites, namely; LAGEOS-1, JASON 3 and TANDEM X. The orbital altitude of TanDEM-X satellite is 508.41 km which is the lowest among the three satellites. Notably, the orbital altitude of the Lageos-1 satellite is about 11.6 times that of the TanDEM-X satellite while that of Jason-3 satellite is about 2.6 times the altitude of the TanDEM-X satellite. The results show that among the three geodesic satellites considered, TanDEM-X satellite with the lowest altitude has the lowest visibility time. Also, with minimum zenith angle restriction value of 0°, the Lageos-1 satellite has the maximum visibility time of 73.5 minutes along with the highest visibility angle of 58.7°. The visibility time and visibility angle of the Lageos-1 satellite drop to 51.1 minutes and 40.8° at minimum zenith angle restriction value of 20°. The analytical models that relates the visibility time of each of the satellites with the minimum zenith angle restriction are also derived. In all, the results show that the higher the orbital altitude, the higher the visibility time of the satellite. Also, the minimum zenith angle restriction significantly affect the visibility time of the satellite; notably, the visibility time decreases as the value of minimum zenith angle restriction increases.
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AFTER LAST PROMOTION ON OCTOBER 1, 2022.

U. S. Ukommi, "Review of Multimedia Communication Quality Assessment Techniques", Nigerian Journal of Technology (NIJOTECH), Volume 41, No.2, March, 2022.

Abstract
Communication pattern is drifting from conventional audio to multimedia applications, streaming live and on-demand digital video contents over telecommunications and broadcasting networks. Currently, some businesses deploy video in promoting products in a far more enriching, entertainment and informative approach than typical traditional audio would allow. However, users of multimedia applications are interested in paying for a good acceptable video quality. Thus, this paper reviews methods used in Peak Signal-toNoise Ratio (PSNR), Structural Similarity Index Metric (SSIM) and Video Quality Metric (VQM) with the objective of providing useful information to wireless video services providers in assessing and monitoring of quality of multimedia services delivered to users. Experimental comparison of PSNR, SSIM and VQM assessment methods to examine their performances in evaluation of multimedia applications has been performed. Comparing the quality performance of PSNR, SSIM and VQM metrics for Akiyo and Crew standard test sequences, it has been observed that the quality performance of the metrics improves when the bitrates allocation increase. For the test of consistency and quality performance of the metrics, observation shows that for a given bitrates of 3.84Mb/s, under CABA test configuration, Akiyo test sequence, experienced better quality performance of 46.63dB (PSNR), 99.10% (SSIM) and 11.00% (VQM) compared to lower quality performance of 36.18dB (PSNR), 90.40% (SSIM) and 22.00% (VQM) experienced by Crew test sequence. Experimental results of the media quality metrics for Akiyo and Crew standard test sequences with different temporal activity levels show that the quality performance of media content also depends on the temporal activity of the media content. The experimental results further show consistency in quality performance of PSNR, SSIM and VQM metrics for CABA and UBA test configurations. Thus, the objective metrics can be harnessed for evaluation of quality performance of multimedia applications at different channel conditions.


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AFTER LAST PROMOTION ON OCTOBER 1, 2022.

V. Umoh, U. Ukommi and U. Ekpe, "A Comparative Study of User Experienced Mobile Broadband Performance", Nigerian Journal of Technology (NIJOTECH), Volume 41, No. 3, May, 2022.

Abstract
Even though the proliferation of handheld mobile communication devices has deepened Internet and broadband penetration in Nigeria, users of such services may not have detailed quantitative performance comparison between the services provided by different network operators. The study here reported is therefore an attempt to bridge the information gap. A measurement testbed based on the Raspberry Pi platform was developed to autonomously measure the mobile broadband performance of third generation (3G) and fourth generation (4G) broadband networks of the four major mobile network operators in the country. Under static access conditions, the system was set up to measure the upload throughput, download throughput and latency from a user-centric perspective. The measurements were taken by simultaneously sampling the networks of four mobile broadband service providers (9Mobile, Airtel, Globacom and MTN) over a period of three weeks in the city of Uyo, Nigeria. The results obtained revealed that Airtel achieved the highest peak download rate for 3G throughput, and this was only 1.41 Mbps higher than the least performing MNO. Also, it was found that MTN’s download rate peaked at 35.06 Mbps, and this was over 300% of the rate achieved by the fourth rated network in terms of the 4G download throughput metric. The measurement results also revealed that peak usage periods, defined as the hours between 7pm and 11pm, witnessed higher variability in throughput rates than other periods.

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AFTER LAST PROMOTION ON OCTOBER 1, 2022.

R. A. Udoh and U. Ukommi, "Hata-Okumura Model-Based Characterisation of Propagation Loss For A Market In Urban Area'', Journal of Multidisciplinary Engineering Science and technology (JMEST), Volume 9, Issue 3, March, 2022.

Abstract
In this paper, Hata-Okumura modelbased characterisation of propagation loss for a market in urban area is studied. The case study area is a market in the city of Uyo in Akwa Ibom State, Nigeria. The field measurement of Received Signal Strength Intensity (RSSI) was conducted for cellular network in the 1800 MHz frequency. Samsung Galaxy S4 phone with Android app, GNetTrack Lite 8.0 installed was used to capture the RSSI of the cellular network. In this paper, in order to accurately characterize the propagation loss of the study area, the Hata-Okumura propagation loss model, also known as the Hata propagation loss model is tuned based on field measured data in the case study area. Three different approaches are employed in the tuning of the Hata-Okumura propagation loss model. The first tuning approach (method I) is the Root Mean Square Error (RMSE)-based tuning approach. The second approach (method II) is a function of residue method. The third approach (method III) is parameter tuning method in which the distance, d was remodelled as a logarithm function. The measurement campaign was conducted three times and the three datasets were merged and then divided into two parts of 75% of the dataset which was used for the model training and the remaining 25 % of the dataset which was used for the cross validation of the model. According to the results, the tuning method III has the best results with the lowest root mean square error (RMSE) of 2.3856 dB, the lowest range of error value of 8.8903 dB, and the lowest maximum absolute error value of 4.6528 dB. The tuning approach I has the worst results compared to the other two methods. The first approach has the highest RMSE of 2.9850 dB, the highest range of error value of 11.6966 dB and the highest maximum absolute error value of 6.2742dB. The results showed that the tuned Hata-Okumura model using the second and third tuning methods predicted the cross validation data better than the training data. In essence, the tuned model effectively characterized the propagation loss in the case study market.
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AFTER LAST PROMOTION ON OCTOBER 1, 2022.

Ubong Ukommi, E. Ubom and Ikpaya, “Ground Station Design for Satellite and Space Technology Development”, American Journal of Engineering Research (AJER), Volume 10, Issue 8, pp-12-19, March 2021.

Abstract
Satellite technology facilitates telecommunications, security and technological development. This paper presents a simple satellite ground station system for educational advancement and motivation of students' interest in the field of space engineering and satellite for development. The ground station can serve as a laboratory for future space technology development and facilitation of teaching and learning efficiency with emphasis on the hands-on experience as related to satellite communications research and development. The system design adopts scientific and engineering methodologies with relative available components for successful development. The proposed system operates on Very High Frequency and Ultra High Frequency spectrum ranging from 144MHz to 438MHz for tracking and reception of signals from amateur band satellites, using a set of Yagi-Uda antennas with 18.0dB gain, Low Noise Amplifier with Noise Figure of 0.7dB, rotor, IC910H transceiver and computer system for automation process. Successful implementation of the proposed system design with margin of 3.37dB, demonstrates a simple technical approach to design an affordable ground station for hands on experience study and research for development of effective future satellite communication systems and space technology.
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AFTER LAST PROMOTION ON OCTOBER 1, 2022.

E. A. Ubom and U. Ukommi, "Protection Distances for Analogue TV and Cellular Network Coexistence in UHF Band Adjacent Channel Operation", Journal of Research and Innovations in Engineering, Volume 6, Number 2, 2021.

Abstract
Due to constant increase in demand for wireless communication services as wired-lines remain unattractive to developing countries like Nigeria, mainly as a result of on-going construction, the “spectrum” has become scarce and expensive, arising of the need for a practicable coexistence mechanism for the harmonious operation of wireless networks in television whitespaces (TVWS). To that end, this paper computes the minimum separation distances between analogue TV and Cellular Networks transmitters in Akwa Ibom State using FCC's protection and pollution viewpoints with empirically derived pathloss model of UHF signals in Uyo. The computed separation distances were validated using SEAMCAT and results showed that adhering to the separation distances will allow the coexistence of TV and LTE users with acceptable interference levels that comfortably satisfied the FCC's stipulated protection ratios.

AFTER LAST PROMOTION ON OCTOBER 1, 2022.

U.S. Ukommi, "Media Motion-based Resource Distribution for Mobile Video Networking", Nigerian Journal of Technology (NIJOTECH), Volume 39, No.4, October, 2020.

Abstract
Wireless video communication is challenging due to vulnerability of media bitstreams to channel distortions. Investigation has been carried out on wireless video channel under tight networking resource budget. One of the challenges is the impact of channel errors on the quality of media streams with high motion activity. Motion activity in this context defines the magnitude of activity displacement in video sequence. Based on the analysis, Media Motion-based Resource Distribution (MRD) is proposed to maximize the average received video quality over wireless system, by regulating the resource distribution of the media streams based on their motion activity characteristics. Experimental results demonstrate that the proposed scheme can improve the average received video quality performance under tight resource constraints budget.


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AFTER LAST PROMOTION ON OCTOBER 1, 2022.

Ubong Ukommi, Emmanuel Ubom and Idaraesit Abraham, “Outdoor 2.4 GHz Band Wifi Networks Performance Characterization”, International Journal of Engineering Research and Technology, Volume 9, Issue 8, August 2020.

Abstract
The task of proper network planning with little or no attenuation has been the major target of communication engineers. To achieve this target, network planners, communications infrastructure vendors and the academia, all over the world have been studying the propagation characteristics of signals to enable them establish networks that suit specific terrain characteristics (such as differences in weather conditions, building structures, trees and other vegetation, which may cause attenuation and/or obstruct the propagated signals from getting to its destination) thereby offering better coverage and quality of service (QoS). To understand these parameters within the Akwa Ibom State University (AKSU) environment, empirical measurements were taken and from the analysis, the path loss exponent for outdoor environments in the 2.4GHz band found to be 1.999. In comparison of the graphical plots of different models, the measured model and COST 231 Walfisch-Ikegami model were adopted for network planning in the terrain.
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AFTER LAST PROMOTION ON OCTOBER 1, 2022.

U. S. Ukommi, “Effect of Motion Intensity on Perceived Quality of Multimedia Communications”, International Journal of Engineering and Advanced Technology, Volume 9, Issue 6, August 2020.

Abstract
Wireless multimedia communication facilitates the way we communicate and work. Multimedia communication has greatly changed the approach of modern world communication, especially during the peak period of coronavirus pandemic, where patterns of official meetings, business transactions and medical services shifted toward virtual approach using multimedia applications such as video conference, Skype, zoom applications and Video on Demand for personalized media consumption. Multimedia communication demands large chuck of scarced network resources to meet users’ quality performance compared to audio communication. This paper assesses the effect of motion intensity on perceived quality of multimedia communication. System simulations performed with the four different ITU-T reference sequences standard test multimedia sequences of various motion intensity characteristics shows that the perceived quality multimedia test sequences decreases with increase in motion intensity level of test multimedia samples under constraint network condition. Approximately, Akiyo test sample with significant low motion intensity recorded average Mean Opinion Score (MOS) value of 4.16 compared with 3.11 and 3.02 MOS values obtained for test samples with relative high motion intensity characteristics.
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AFTER LAST PROMOTION ON OCTOBER 1, 2022.

E. Ubom, Victor E. Idigo, U. Ukommi, “Primary User Protection Contour and No-Talk Zone Characterization for TV Whitespace Spectrum Reuse in Nigeria”, International Journal of Innovative Technology and Exploring Engineering, Volume 9 Issue 10, August 2020.

Abstract
To encourage secondary spectrum access within the TV broadcast bands in Nigeria, the propagation properties of TV signals on the VHF and UHF frequency ranges were empirically studied through measurements carried from two TV stations. The Pathloss exponent for the VHF band was found to be 1.9 with a characterised Pathloss equation for VHF band computed as 𝑷𝑳 𝒅𝑩 =𝟖𝟒.𝟎𝟒+𝟏𝟗.𝟎𝟑𝒍𝒐𝒈𝟏𝟎 𝒅 , where (𝒅) is the distance from the transmitter to the receiver. The UHF band Pathloss exponent was computed to be 1.8 with a Pathloss equation characterised as 𝑷𝑳 𝒅𝑩 =𝟓𝟕.𝟑𝟓+𝟏𝟕.𝟗𝟔𝒍𝒐𝒈𝟏𝟎 𝒅 . The findings re-echoed the need for specific prediction model to accurately estimate the service coverage of TV stations and facilitate effective utilization of spatial TV white space as it was found that there were divergence in coverage prediction between the measured model and some of the conventional models. Using the protection view point, the protection contour in kilometers for TV signals propagating in the UHF band in Nigeria was characterized to be 𝒅𝒓𝒑= 𝟏𝟎 𝑷𝒕+𝟑𝟐.𝟔𝟓 𝟏𝟕.𝟗𝟔 .. Where (𝒅𝒓𝒑) is the protection contour radius modeled as a function of the transmit power of the TV station in decibels with reference to one milliwatt (dBm) for co-channel and adjacent channel coverage. Similarly, the no-talk-zone in kilometers was characterized as a function of the transmit power of the secondary user device in dBm for co-channel usage to be 𝒅(𝒓𝒏−𝒓𝒑)=𝒂𝒏𝒕𝒊𝒍𝒐𝒈[𝑷𝒔−𝟖𝟗.𝟕𝟔𝟏𝟕.𝟗𝟔] modeled as a function of the secondary user transmit power 𝑷𝒔. The separation distance in kilometers from the TV station to the possible secondary user transmitter beyond which no interference exist was computed to have a relationship equal to 𝒂𝒏𝒕𝒊𝒍𝒐𝒈 𝑷𝒕+𝑷𝒔−𝟓𝟕.𝟏𝟏𝟏𝟕.𝟗𝟔 . This model will facilitate TVWS co-channel coexistence using the specified equation to determine the separation distances between television transmitters and secondary user transmitters.


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HOBBIES

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REFEREES

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REFEREES

  • Prof. Nse N. Essien The Vice Chancellor, Akwa Ibom State University, Ikot Akpaden, Akwa Ibom State, Nigeria.

  • Engr. Prof. Esio O. Oboho Dean, Faculty of Engineering, Akwa Ibom State University, Ikot Akpaden, Akwa Ibom State, Nigeria.

  • Engr. Prof. Charles E. A. Uko Department of Civil Engineering, Faculty of Engineering, University of Uyo, Uyo, Akwa Ibom State, Nigeria.

APPENDIX

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APPENDIX

  • Selected photographs during discharge of professional and community development services at various projects sites within Akwa Ibom State University and outside the University environment;p>

  • Inspection of electronic and communication systems at 21-Storey Tower Project (Dakkadda Tower by Akwa Ibom State Government), Akwa Ibom State. The total project worth is about 21 Billion Naira (2021).

  • Inspection of electronic and communication systems at 21-Storey Tower Project (Dakkadda Tower), Akwa Ibom State (2021).

  • Communication Networking at Tele House London, United Kingdom (2012)

  • Installation of Satellite Communication Systems at Cobett Hill Satellite Earth Station, United Kingdom (2013)

  • Design of 10m diameter parabolic antenna for satellite communications at Cobet Hill Earth Station, United Kingdom (2013)

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ubongukommi@aksu.edu.ng
uukommi@yahoo.com

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Department of Electrical and Electronics Engineering, Faculty of Engineering, Akwa Ibom State University, Ikot Akpaden, Mkpat Enin L.G.A, Akwa Ibom State
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