Prof. Ahmed Abdul-Rahman

Associate Professor

Dept: Telecommunications Engineering
College of Engineering
New Engineering Building
Room A 320
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Research Areas/Interests

Advancing AI and Machine Learning Research- Dec. 2023 to date I have been working with a PhD student looking at the application of AI and Machine L...~more

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Publications

    Journal Publications

    1. Seth Djanie Kotey, Eric Tutu Tchao, Abdul-Rahman Ahmed, Axel Sikora, Andrew Selasi Agbemenu, Eliel Keelson, Dominik Welte and Eliel Keelson, "Blockchain interoperability: the state of heterogenous blockchain-to-blockchain communication”, IET Communications. 00, 1– 24 (March 2023). https://doi.org/10.1049/cmu2.12594
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    3. Nana Kwadwo Akrasi-Mensah, Eric Tutu Tchao, Henry Nunoo-Mensah, Andrew Selasi Agbemenu, Abdul-Rahman Ahmed, Axel Sikora, Dominik Welte and Eliel Keelson, "An Overview on Technologies for Improving Storage Efficiency in Blockchain-Based IIoT Applications" Electronics, 11(16):2513. August 2022, https://doi.org/10.3390/electronics11162513.
    4. Nana Kwadwo Akrasi-Mensah, Andrew Selasi Agbemenu, Henry Nunoo-Mensah, Eric Tutu Tchao, Abdul-Rahman Ahmed, Eliel Keelson, Axel Sikora, Dominik Welte and Jerry John Kponyo" An Adaptive Storage Optimization Scheme for Blockchain-IIoT Applications using Deep Reinforcement Learning", in IEEE Access, vol. 11, pp. 1372-1385, 2023, doi: 10.1109/ACCESS.2022.3233474.
    5. S. Ellis, A.-R. Ahmed, J. J. Kponyo, I. Acquah, N. Rasool, “Characteristic modal analysis in miniaturization and bandwidth-enhancement of monopole antenna for WLAN/WiMAX/LTE applications,” Microw. Opt. Technol. Lett., pp. 1 – 8, 2023.
    6. S. O. Kwakye, Nouman Rasool, K. O. Gyasi, J. Abroquah, M. S. Ellis, O. L. Owusu,  A.-R Ahmed, J. J. Kponyo, “Design and analysis of a low-profile dual-band circularly polarized monopole antenna based on characteristic mode analysis”, Int. J. RF Microwave Computer-Aided Design, pp. 1- 12, 2023
    7. O. Gyasi, A. Boukarkar, K. S. O. Kwakye, M. S. Ellis, A.-R. Ahmed, J. J. Kponyo, M. A. Basit, N. Shoaib, “Characteristic mode analysis of a compact circularly polarized rotated square slot antenna” Microw. Opt. Technol. Lett., pp. 1 - 8, 2023
    8. Adomako, A.-R. Ahmed, M. S. Ellis, J. O. Agyemang, “Assessing the feasibility of RF Fingerprinting for security in unmanned aerial vehicles,” Int. journal of communication networks and information security, 15 (2), 101 – 113, 2023
    9. S. Ellis,Philip Arthur, A-R. Ahmed, J. J. Kponyo, Benedicta Andoh-Mensah, Bob John, "Design and circuit analysis of a single and dual band-notched UWB antenna using vertical stubs embedded in feedline", Heliyon, e08554, 7 (12), pp. 1 - 9, 2021
    10. S. Ellis,A-R. Ahmed, J. J. Kponyo, K. O. Gyasi, K. S. O. Kwakye, S. Ameyaw, "Improved bandwidth and F/B ratio of a CPW-fed planar monopole antenna", Heliyon, e10037, vol. 8, no. 8, pp. 1 - 6, 2022
    11. A-R. Ahmed, D.H. Lee, K. W. Yeom, "On-wafer Noise Parameters Measurement Using an Extended Six-Port Network and Conventional Noise Figure Analyzer," International Journal of Microwave & Wireless Technologies. doi:10.1017/S1759078716000842
    12. A-R. Ahmed, and K. W. Yeom, “A Low-Cost Noise Wave Correlator for the Extraction of 2-Port Noise Parameters from Cold Noise Power Measurement” International Journal of Wireless & Microwave Technology, vol. 6 no. 5, pp. 10-21, Sept. 2016
    13. A-R Ahmed, J.J. Kponyo, K.A. Opare, K.S. Nwezege, H. I. Frank, H. Hamdoun, S. Alshehri and L.O.Akazua, The 6-port Network Technique for Extraction of 2-Port DUT Noise Correlation Matrix: A Theoretical Verification through Modelling and Simulation, International Journal of Simulation Systems, Science & Technology, DOI: 10.5013/IJSSST.a.17.36.01
    14. W. Yeom, A.-R. Ahmed, "Measurement of Noise Parameters Using 6-Port Network," Invited Paper, Journ. Korean Inst. of Electromagnetic Eng. and Science, vol. 26(2), pp. 119~126, Feb. 2015.
    15. A-R. Ahmed, K.W. Yeom," An Extraction of Two-Port Noise Parameters From Measured Noise Power Using Extended Six-Port Network," IEEE Trans. Mirowave Theory and Techniques, vol. 62, no. 10, Oct. 2014.
    16.  H. Lee, A.-R. Ahmed, S. W. Lee, K.W. Yeom, "Measurement of the Noise Parameters of On-Wafer Type DUTs Using 8-Port Network," Journ. Korean Inst. of Electromagnetic Eng. and Science, vol. 25(8), pp. 808-820, Aug. 2014. 
    17. C. Jeong, B.I Son, D.H Lee, A.-R. Ahmed, K.W. Yeom, "Design of a GaN HEMT Power Amplifier Using Output Matching Circuit with Arbitrary Harmonic Impedances," Journ. Korean Inst. of Electromagnetic Eng. and Science, vol. 24, (11), pp. 1034~1046, Nov. 2013.
    18. C. Jeong, B.I Son, D.H Lee, A.-R. Ahmed, K.W. Yeom, "Design of a Miniaturized 5.3 GHz 360° Analog Phase Shifter," Journ. Korean Inst. of Electromagnetic Eng. and Science, vol. 24(6), pp. 602 ∼ 612 Jun. 2013
    19. S. Ellis, F.B. Effah, Abdul-Rahman Ahmed, Jerry J. Kponyo, Javad Nourinia, Changiz Ghobadic and Bahman Mohammadic, “Asymmetric Circularly Polarized Open-Slot Antenna,” International Journal of RF and Microwave Computer-Aided Engineering, DOI: 10.1002/mmce.22141
    20. S. Ellis, A.R. Ahmed, J.J. Kponyo, F.B. Effah, J. Nourinia, C. Ghobadic and B. Mohammadic, “Compact broadband circularly polarized printed antenna with a shifted monopole and modified ground plane,” Journal of Instrumentation, vol. 14, no. 11, Nov. 2019, pp 11026-11026
    21. Mubarak Ellis, Abdul-Rahman Ahmed, Jerry John Kponyo, Javad Nourinia, Changiz Ghobadi, Bahman Mohammadi, “Simple circularly polarized planar monopole inverted T-shaped antenna,” Opt. Technol. Lett. 2019; 1–6.
    22. Joseph A.K Nsor, Abdul-Rahman Ahmed, Severin Azankpo, Eric Aggrey and Sani Ellis Mubarak, “Design and Implementation of Remote RFI Monitoring System for Ghana Radio Telescope Observatory-Nkutunse,” American Journal of Electrical and Electronic Engineering, 7, No. 1, pp. 8-13, Apr. 2019.
    23. Dong-Hyun Lee, Abdul-Rahman Ahmed, and Kyung-Whan Yeom, “A Measurement of Noise Wave Correlation Matrix Using Noise Power Ratios,” IEEE Transaction on Instrumentation &Measurement; 68, no. 7, pp 2579-2593 Jul. 2019
    24. Mubarak Sani Ellis, Abdul-Rahman Ahmed, Jerry John Kponyo, Javad Nourinia, Changiz Ghobadi, Bahman Mohammadi, “Unidirectional Planar Monopole Antenna Using a Quasi-Radiator”. IEEE Antennas and Wireless Propagation Letters. vol. 18, no. 1, pp. 157-161, Jan. 2019.
    25. Mubarak Ellis, Abdul-Rahman Ahmed, Jerry John Kponyo, Javad Nourinia, Changiz Ghobadi, B. Mohammadi, “Miniaturized printed monopole antenna with a linked ground plane and radiator,” IET Electronics Letters, Volume 54, Issue 11, 31, pp. 676 – 678, May 2018.
    26. Joseph A.K. Nsor, Abdul-Rahman Ahmed, Christopher K. Nyakey, and Prosper K. Ashilevi, “System Temperature Characterization of Nkutunse Receiver at 5GHz (Continuum) and 6.7GHz (Methanol Maser)”, International Journal of Engineering Science and Technology, Vol. 10, No.04, pp. 164-171, Apr. 2018.
    27. Mubarak S. Ellis, Abdul-Rahman Ahmed and Jerry J. Kponyo, “Miniaturized Planar Monopole UWB Antenna with Integrated RFID/GPS/GSM/WLAN Bands using capacitively Loaded Loop Resonator (CLLRs),” International Journal of Wireless and Microwave Technologies, 6, pp. 40-49, Nov. 2018.
    28. Mubarak Sani Ellis, Abdul-Rahman Ahmed and Jerry John Kponyo, “A Circularly Polarized Planar Monopole Antenna with Wide AR Bandwidth Using a Novel Radiator/Ground Structure,” Global Journal of Researches in Engineering: Electrical and Electronics Engineering, Volume 17, Issue 3 Version 1.0, 2017. 
    29. Joseph A.K Nsor, Abdul-Rahman Ahmed, Joyce Koranteng-Acquah, and Sani Ellis Mubarak, “Investigation of Potential RFI Threats to Yet to Be Deployed Ghana Radio Telescope Observatory-Nkutunse,” International Journal of Engineering Research & Technology, 6 Issue 08, pp. 202-207, Aug. 2017.
    30. Mubarak S. Ellis, Jerry J. Kponyo, and Abdul-Rahman Ahmed, “A Compact Wideband Circularly Polarized L-Slot Antenna Edge-Fed by a Microstrip Feedline for C-Band Applications,” Progress In Electromagnetics Research Letters, Vol. 65, 95–102, 2017
    31. Jerry John Kponyo, Kwasi Adu-Boahen Opare, Ahmed Abdul-Rahman, Justice Owusu Agyemang, “An intelligent Irrigation System for Rural Agriculture,” International Journal of Applied Agricultural Sciences, vol. 5, no. 3, pp. 75-81, May 2019.

          

    Conference Publications

    1. Frank, K. S. Nwizege, J. J. Kponyo, A.-R. Ahmed, H. Hamdoun, L. U. Akazua, “ Efficient RFID Modulation Scheme for Better Ubiquitous Network Performance,” . In: Proc. of IEEE UKSim-AMSS 18th International Conference on Computer Modelling and Simulation, UKSim2016, Cambridge, March, 25-27, 2015, pp. 594-600.
    2. J.J. Kponyo, K. Opare, N. S. Kenneth, A.-R. Ahmed, H. Hamdoun, L. U. Akazua, S. Alshehri, H. I. Frank, “A Distributed Intelligent Traffic System Using Ant Colony Optimization: A NetLogo Modeling Approach” In: Proc. of IEEE UKSim-AMSS 18th International Conference on Computer Modelling and Simulation, UKSim2016, Cambridge, March, 25-27, 2015, pp. 594-600.
    3. J.J Kponyo, K. Opare, N. S. Kenneth, A.-R. Ahmed and K. Koumadi, An Ant Colony Optimization Solution to the Optimum Travel Path Determination Problem in VANETS: A NetLogo Modelling Approach", Proc. of Mobility 2015, Brussels, June 2015.
    4. A-R. Ahmed, Jerry Kponyo, Kwasi Opare, Nwizege S. Kenneth and Koudjo Koumadi. Temperature Calibration of a Passive Eight-Port Network for Noise Parameters Measurement. In: Proc. of IEEE UKSim-AMSS 17th International Conference on Computer Modelling and Simulation, UKSim2015, Cambridge, March, 25-27, 2015, pp. 594-600.
    5. A-R. Ahmed, K. W. Yeom, "Noise Parameters Measurement Using an Eight-Port Network,"Proc. of Korea Institute of Communication and Information Sciences., Daejeon, 24th -25th May 2014.
    6. A-R. Ahmed, D.H. Lee, K. W. Yeom, "Simplified Calibration of Six-Port Network For Noise Parameters Measurement," Proc. of Korean Inst. of Electromagnetic Eng. and Science, Jeju Island, Aug. 2013.
    7. H. C. Jeong, H. S. Oh, A.-R. Ahmed, K. W. Yeom, "Design of X-band 40W Pulse-Driven GaN HEMT Power Amplifier" Proc. of Asia–Pacific Microwave Conference, Kaohsiung, Dec. 2012.

    8. Willie, A.-R. Ahmed, N. Emmanuel and B. O. Michael, “Incorporating Equatorial Environmental Conditions Into An Appropriate Technology” Proc. ASEE 2007, Honolulu, June 2007.

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