Ahmed El-Mahdy

Biography: Ahmed El-Mahdy was born in Port Said, Egypt, in 1963. He received the B.S. and M.S. degrees in electrical engineering from the Military Technical College (MTC), Cairo, Egypt, in 1986 and 1992, respectively, and the Ph.D. degree in electrical engineering from The Catholic University of America, Washington, DC, USA, in 1999. From 1986 to 1989, he was an Electronic Engineer. From 1989 to 1992, he was a Researcher and an Instructor with the Electrical Engineering Department, MTC, where he has been a Lecturer and a Researcher, since 1999. He promoted to an Associate Professor in 2005. He promoted to a Full Professor in 2010. He is currently a Professor and the Dean of the Faculty of Information Engineering and Technology, German University in Cairo, Egypt. His research interests include wireless communications, equalization, detection and estimation, and adaptive signal processing. He was awarded the National Encouragement Prize in engineering sciences for Wireless Communications and Signal Processing Researches, in June 2008.

Publications

Links

Google Scholar: https://scholar.google.com/citations?user=h78NEoEAAAAJ&hl=en

Research gate: https://www.researchgate.net/profile/Ahmed-El-Mahdy-5

Published Journals

Ahmed E. El-Mahdy, “Adaptive Channel Estimation and Equalization for Rapidly Mobile Communication Channels”, IEEE Transactions on Communications, vol. 52, 2004. 7, pp. 1126-1135, July 2004.

Ahmed E. El-Mahdy, “Adaptive Signal Detection over Fast Frequency Selective Fading Channels under Class-A Impulsive Noise”, IEEE Transactions on Communications, vol. 53, no. 7, pp. 1110-1113, July 2005.

Ahmed E. El-Mahdy and N. Namazi, “Classification of MFSK signals over Rayleigh Fading Channel”, IEEE Transactions on Communications., vol. 50, no. 6, 2002. 967-974, June 2002.

Ahmed E. El-Mahdy, “Automatic Classification of Composite FM/PM Speech Signals in Sensor Arrays over Flat Fading Channel”, IET Communications Journal, vol. 1, no. 2, pp. 157-164, April 2007.

Ahmed E. El-Mahdy, “Classification of MFSK Signals over Time Varying Flat Correlated Fading Channels under Class-A Impulsive Noise Environment ”, IEE Proceedings, Communications vol. 151, no. 6, pp. 619-626, December 2004.

Ahmed E. El-Mahdy and N. Namazi, “Turbo Equalization of Time Varying Multipath Channel Under Class-A Impulsive Noise”, IEE Proceedings, Communications, vol. 153, 2006. 3, pp. 341-348, June 2006.

Ahmed El-Sayed El-Mahdy, ” EM-Based Optimal Maximal Ratio Diversity Combiner for Constant Envelope Signals”, The Open Signal Processing Journal, vol. 2, pp. 1-6, Feb. 2009.

Ahmed E. El-Mahdy, “Error Probability Analysis of Multicarrier DS-CDMA System under Imperfect Channel Estimation and Jamming in a Rayleigh Fading Channel”, IET Signal Processing, vol. 4, issue 1, pp. 89-101, February 2010

Ahmed E. El-Mahdy, “Multiple Tone Interference of Multicarrier Frequency- Hopping BPSK System for a Rayleigh Fading Channel with Channel Estimation Errors”, Digital Signal Processing, vol. 20, pp. 869-880, May 2010.

Ahmed E. El-Mahdy, “ Partial Band Jamming of Multicarrier FH/BFSK Receiver over a Rayleigh Fading Channel with Imperfect Channel Estimation”, IET Communications, pp. 285-294, vol. 4, issue 3, Feb. 2010.

Ahmed El-Sayed El-Mahdy and Ahmed Elbakly, “Adaptive Diversity Combining Scheme and Channel Estimation for ISI Channel in Impulsive Noise Environment”, Journal of Applied Sciences Research, vol. 8, pp. 4697-4703, ISSN 1819-544X, August 2012.

Ahmed E. El-Mahdy, ”Recursive Detection of M-ary Signals over Fast Varying Mobile Communication Channel”, Scientific Journal of Telecommunications, Computing, Electronics and Control, vol.11, no.1, pp. 147-154, ISSN 1693-6930, March 2013.

Ahmed E. El-Mahdy, “Adaptive Generalized Selection Combining Receiver over Time Varying Mobile Communication Channel”, IET Signal Processing, pp. 64-71, vol.6, issue 1, Feb. 2012

Ahmed E. El-Mahdy and Maged Ahmed, ”Selective Adaptive Parallel Interference Cancellation for Multicarrier DS-CDMA Systems”, International Journal of Electronics, Electrical and Communication Engineering (IJEECE), vol. 5, no.1, pp. 52-62, January 2013.

Ahmed El-Mahdy, Seif El-Wakil, and Ahmed Elbakly and “Multiple Antenna Selection of multi-Relay System using GSC Scheme”; the International Journal of Scientific and Engineering Research (IJSER), Volume 5, Issue 2, ISSN 2229-5518, Feb. 2014.

Ahmed A. Diab and Ahmed. E. El-Mahdy, “Performance of Diversity Combining Schemes and Power Allocation for Amplify-and-Forward Relaying Over Frequency Selective Fading Channel”, Journal of J. Computational Intelligence and Electronic Systems, Vol. 3, No. 2, PP. 132-137, June 2014.

E. El-Mahdy and Nada Ayman, “Maximum Likelihood based Relay Selection Scheme over Slow Quasi-Static Flat Fading Channel:, Journal of Computational Intelligence and Electronic Systems (JCIES), Vol. 3, No. 3, 2014

Ahmed E. EL-Mahdy, Ashraf Samy, Ahmed Mostafa Elbakly, “Employing a Suppression Filter for MC-CDMA Overlay, International Journal of Scientific & Engineering Research, Volume 5, Issue 9, September-2014, ISSN 2229- 5518

Ahmed El-Mahdy, Ahmed Elbakly, and Nada Tarek, “ Performance analysis of relay selection scheme for amplify and forward protocol in rayleigh fading environment”; International Journal of Scientific & Engineering Research, volume 6, Issue 10, October-2015. pp.1406-1431.

Ahmed El-Mahdy, Nerin Ashraf, Ahmed Elbakly “Comparative Study of the Performance of Two way and One Way DF Relaying with Co-Channel interference and Channel Estimation Error”; International Journal of Scientific & Engineering Research, Volume 6, Issue 11, November-2015 ISSN 2229-5518

Ahmed El-Mahdy, Maggie Shammaa, Menna Ali, Nada El-Ghandour, Nada Saleh, and Ehab Rostom,” Mitigating Class-A Impulsive Noise of Long Term Evolution Uplink and Downlink”, Journal of Computational Intelligence and Electronic Systems, Vol. 4, 1–6, 2015.

Ahmed El-Mahdy and Ahmed El-Bakly, “Relay Selection Scheme based on Maximum Likelihood Technique over Frequency Selective Fading Channel”; International Journal of Scientific & Engineering Research, Volume 7, Issue 4, April 2016, ISSN 2229-5518

Ahmed El-Mahdy and Wassim Alexan; “A Comparative Study on the Performance of LLR- and SNR-Based Hybrid Relaying Schemes”; Wireless Communications and Mobile Computing, Volume 2017, January 2017.

Ahmed El-Mahdy and Wassim Alexan; “A Threshold–Free LLR–Based Scheme to Minimize the BER for Decode–and–Forward Relaying”; Wireless Personal Communications, Springer, vol. 100, issue 3, pp. 787–801, June 2018.

Sarah Imam and Ahmed El-Mahdy, “ Interference Cancellation Techniques in Heterogeneous Networks”, Foundations of Computing and Decision Sciences,vol. 43, issue 3, Sept. 2018.

Ahmed El-Mahdy and Mennatalla Serag, “Design of Multi-Antenna Relaying for OFDM in Impulsive Noise Environment”, accepted and under production in the journal of Digital Communications and Networks, Elsiver, DOI: 10.1016/j.dcan.2018.01.004

Published Conferences

Engy Maher and Ahmed El-Mahdy, “Optimal Power Allocation for Multiple D2D Users in HetNets with Channel Estimation Error”, accepted in IEEE Wireless Communications and Networking Conference (WCNC 2019), 15-18 April 2019, Marrakech, Morocco

Engy Maher and Ahmed El-Mahdy, “Uplink Power Control for D2D-enabled HetNet with Partial CSI via Fractional Programming”, 15 th Wireless On-demand Network systems and Services(IEEE/IFIP WONS 2019), 22-24 January 2019, Wengen, Switzerland

Ahmed Elmahdy, Wassim Alexan and Youstina Megaly, “ Adaptive Hybrid Scheme for Cooperative Communications”, Design and Architectures for Signal and Image Processing, Porto, Portugal, Oct. 2018

Engy Maher and Ahmed El-Mahdy, “A QoS-based Power Optimization for D2D underlaying Macro-Small Cellular Networks with Imperfect Channel Estimation”, 2019 International Conference on innovative trends in Computer Engineering (ITCE’2019) 2 – 4 February, 2019, Aswan, Egypt

Engy Maher and Ahmed El-Mahdy, “Cross-tier Interference Reduction in MIMO Heterogeneous Network with Imperfect CSI”, 2019 International Conference on innovative trends in Computer Engineering (ITCE’2019) 2 – 4 February, 2019, Aswan, Egypt

Ahmed El-mahdy and Wassim Alexan “Fixed and Adaptive Relaying Power Schemes for Underlay Cognitive Radio Networks” 2017 Advances in Wireless and Optical Communications (RTUWO), Latvia

Ahmed El-mahdy and Omar Alaa ,”Cognitive MIMO System with Two-Path Relaying”, Accepted in 2nd International conference on Advanced Technology and Applied Sciences (ICaTAS’2017), Arab Academy, main campus, Alexandria, Egypt, September 2017.

Engy Maher and Ahmed El-Mahdy, “Interference Management for D2D Communications Underlay Macro-Small Cell Networks with Imperfect Channel Estimation”, 2017 Advances in Wireless and Optical Communications (RTUWO) – Latvia

Sarah Emam and Ahmed El-Mahdy, “Selective Interference Alignment in 5G Networks”; 20th IEEE Conference in Signal Processing: Algorithms, Architectures, Arrangements, and Applications (SPA), Poland, Sept. 2016.

Ahmed Desouky and Ahmed El-Mahdy, “Asynchronous Down-link Cooperative Communication Scheme in Rayleigh Fading Wireless Environment”, 20th ”IEEE Conference in Signal Processing: Algorithms, Architectures, Arrangements, and Applications (SPA), Poland, Sept. 2016.

Wassim Alexan, Ahmed El Mahdy, “A Hybrid Relaying Protocol for Wireless Cooperative Networks Based on the Log–Likelihood Ratio”, 19th IEEE Conference in Signal Processing: Algorithms, Architectures, Arrangements, and Applications (SPA), Poland, 23- 25 Sept. 2015.

Ahmed El Mahdy, “Performance of Two Way DF Relaying with Co-Channel Interference and Channel Estimation Error”, 5th international conference on digital information processing and communications, Switzerland, Sierre , 7- 9 Oct. 2015.

Wassim Alexan, Ahmed El Mahdy, “A Relay Selection Method for Bidirectional Wireless Cooperative Networks Based on the Log–Likelihood Ratio”, 19th IEEE Conference in Signal Processing: Algorithms, Architectures, Arrangements, and Applications (SPA), Poland, 23- 25 Sept. 2015.

Wassim Alexan, Lamiaa Daoud, Ahmed El Mahdy, LLR–Based Hybrid Relaying as a Countermeasure Against an Impulsive Noise Jamming Attack ”, 19th IEEE Conference in Signal Processing: Algorithms, Architectures, Arrangements, and Applications (SPA), Poland, 23- 25 Sept. 2015.

Ahmed El-Mahdy and Nada Tarek, “A Proposed Relay Selection Algorithm over Rayleigh Fading Channel”; International conference on communications, signal processing, and their applications, American University of Sharjah, UAE, Feb. 2015.

Ahmed El-Mahdy and Ahmed Walid, “Log-Likelihood Ratio-based Relay Selection Algorithm for Cooperative Communications, International conference on communications, signal processing, and their applications, American University of Sharjah, UAE, Feb. 2015

Ahmed El-Mahdy and Ahmed El-Desouky, “A Reduced-Complexity Partially- Coherent Decode and Forward Cooperative Communication Scheme,” 18th IEEE Conference in Signal Processing: Algorithms, Architectures, Arrangements, and Applications (SPA), Poland, 22- 24 Sept. 2014.

Ahmed El Mahdy and Wassim Alexan, “’A Quantized Reliability-Relay Selection Method for Wireless Cooperative Communications’ The 7th International Symposium on Wireless Communication Systems, Barcelona, Spain, August 2014,

Wassim Alexan, Ahmed El Mahdy, “Relay Selection Based on the Log Likelihood Ratio for Cooperative Communication Networks”, 18th IEEE Conference in Signal Processing: Algorithms, Architectures, Arrangements, and Applications (SPA), Poland, 22-24 Sept. 2014.

Lamiaa Daoud, Ahmed El-Mahdy, “Performance of Hybrid Relaying in Cooperative Wireless Systems in the Presence of Impulsive Noise”, 18th IEEE Conference in Signal Processing: Algorithms, Architectures, Arrangements, and Applications (SPA), Poland, 22- 24 Sept. 2014.

Ahmed El-Mahdy and Ahmed El-Desouky,” Differential Space-Time Coding for Partially-Coherent Decode and Forward Cooperative Communication,” ICET 2014, German University in Cairo, Egypt

Ahmed El-Mahdy, “Adaptive Minimum Selection Combining Scheme over ISI Communication Channel in Non-Gaussian Noise”; 17th IEEE signal processing and applications, 26-28th September 2013 – Poznań, Poland

Ahmed El-Mahdy and Ahmed Afifi, “Capacity Enhancement of Half-Duplex Multi Relay System in Impulsive Noise Environment”, 17th IEEE signal processing and applications, 26-28th September 2013 – Poznań, Poland

Ahmed El-Mahdy and Nada Tarek;” Relay selection Algorithm for Wireless Cooperative Network”, 17th IEEE signal processing and applications, 26-28th September 2013 – Poznań, Poland

Ahmed El-Mahdy, Ahmed Afifi and Nourhan Tarek “Enhancement the spectral efficiency of half-duplex single antenna multi-relay system”, 15th International Conference on Aerospace Sciences & aviation Technology, Military Technical College, Cairo, May 28-30, 2013

Ahmed El-Mahdy and Ahmed Ali “Multiple antenna selection of multi-antenna relays using MSC scheme”, 15th International Conference on Aerospace Sciences & aviation Technology, Military Technical College, Cairo, May 28-30, 2013

Ashraf Samy and Ahmed El-Mahdy, “Adaptive Diversity Combining Scheme and Channel Estimation for ISI Channel in Impulsive Noise Environment”, 3rd International Conference on Circuits, Systems, Control, and signals (CSCS ’12), Barcelona, Spain, Oct 16-19, 2012

Ashraf Samy, Ahmed El-Mahdy, and Khairy El-Barbary, A. Hanafy, “Performance Evaluation of MC-DS-CDMA System in Presence of Modulated Narrowband Interference ”, submitted to 29th National Radio Conference,(NRSC 2012), Cairo university, 2012, Egypt

Ashraf Samy and Ahmed El-Mahdy, “Multitone Narrowband Interference Suppression of Orthogonal Multi-carrier DS-CDMA System using Suppression Filter,” Conference of the international congress for global science and technology ICGST-2011), 19-21 December, 2011, Istanbul, Turkey.

Maged M. and Ahmed El-Mahdy, “Performance Analysis of Selective Adaptive Multiple Access Interference Cancellation for Multicarrier DS-CDMA Systems”, International Conference on Computer, Electrical, and Systems Sciences, and Engineering (ICCESSE 2011 ), July 13-15, 2011, Amsterdam, Netherlands.

Maged M., Ahmed El-Mahdy, and K. El-Barbary,” Performance Analysis of Adaptive Hard Decision Parallel Interference Cancellation Receiver in Asynchronous Multicarrier DS-CDMA System”, accepted in 28th National Radio Science Conf. (NRSC 2011), National Telecommunication Institute, Cairo, Egypt, March 15-17, 2011

El-Barbary, Ahmed El-Mahdy, H. Abou Bakr, and H. Sakr, “Performance Evaluation of Detection of Direct Sequence Spread Spectrum Signals over a Flat Fading Channel”, in proc. 6th int. Conf. on Electrical Engineering (ICCEENG 2010), Military Technical College, Cairo, Egypt, May 2010.

Mahran, A El-Mahdy, and M. Karem ,” Performance Evaluation of Coded- OFDM system using LDPC and Channel Estimation’, 5th International Computer Engineering Conference, Cairo University, Egypt, December 2009.

Ibrahim, A. Mahran, A. El-Mahdy, “FPGA Implementation and Performance Evaluation of WCDMA System over AWGN Channel”, proc. 26-th int. conf. Radio Science, Future university, March 2009.

El-Mahdy, A. Mahran, S. Ibrahim, ” Performance Analysis of WCDMA system for LEO Satellite Channel “, proc. 13th int. conf. Aerospace Sciences and Aviation Technology, Military Technical College, Cairo, Egypt, May 2009.

El-Mahdy A. E., Mahran A., Karem, M. ,” Performance Analysis of OFDM System over LEO Satellite Channel”, in proc. 6th int. Conf. on Electrical Engineering (ICCEENG 2008), Military Technical College, Cairo, Egypt, May 2008.

Ahmed El-Mahdy, ” A Hybrid Adaptive Diversity Combining Receiver over Rayleigh Fading Channels,” in sixth inter. Conf. on Communication Systems and Networks (CSN 2007), Palma de Mallorca, Spain, August 2007

EL-Mahdy, A. E., Abou-Bakr, H.H., Samy, A.M.,” Performance Analysis of Multicarrier FH/BFSK System with Jamming over Rayleigh Fading Channel,” in proc. 12th int. conf. Aerospace Sciences and Aviation Technology, Military Technical College, Cairo, Egypt, May 2007

Ahmed E. El-Mahdy, “Equalization for Fast Time Varying Frequency Selective Fading Channel under Class-A Impulsive Noise”, in proc. the 2004 Int. conf. Electrical, Electronics, and Computer Engineering, Ain Shams University, Cairo, Egypt, Sept. 2004.

Abou-Bakr. H., EL-Mahdy, A. E., and Mohamed Asaad Abd-Elrazek.,”Performance Evaluation of Pulsed Radar Identification Using Hidden Markov Model,” in proc. 12th int. conf. Aerospace Sciences and Aviation Technology, Military Technical College, Cairo, Egypt, May 2007.

El-Mahdy, A. E. ”A Maximal Ratio Diversity Combiner of MPSK Signals via EM Algorithm, “in proc.int. conf. Image and Signal Processing, pp. 97, Hawaii, USA, Aug. 2001.

EL-Mahdy, A. E., Khairy E. B. and Samy A.M.,” Jamming of Multicarrier Frequency Hopping Coherent BPSK System over AWGN Channel,” in proc. 12th int. conf. Aerospace Sciences and Aviation Technology, Military Technical College, Cairo, Egypt, May 2007.

El-Mahdy, A. E., ” Optimum Receiver for QAM Signals based on EM Algorithm Over Fading Channel “, in proc. 18th int. conf. Radio Science, Mansoura university, March 2001

El-Bardaweny, K. El-Barbary, A. El-Mahdy, and E. Saad, “Efficient Channel Estimation for WCDMA Systems”, in proc. 5th int. Conf. on Electrical Engineering, Military Technical College, Cairo, Egypt, May 2006.

El-Mahdy, A. E. Abd EL-latif, M. S., and El-gamel S. A.,” Performance Evaluation of Frequency Agile radar in Presence of Chirp Jamming,” in proc. 11th int. conf. Aerospace Sciences and Aviation Technology, May 2005.

El-Barbary, El-Mahdy, A.E, and , El-shawadfy S. A.,”Optimum Reception over Impulsive Noise Channels,” in proc. 11th int. conf. Aerospace Sciences and Aviation Technology, May 2005.

Elessaid, El-Bardaweny, K. El-Barbary, and A. E. El-Mahdy, “Blind Multiuser Detection of WCDMA Signals,” in proc. 12th int. conf. Aerospace Sciences and Aviation Technology, Military Technical College, Cairo, Egypt, May 2007

Ahmed E. El-Mahdy, “An Adaptive Receiver for M-ary Signals for Rapidly Time Varying Fading Channels”, in proc. 10th int. conf. Aerospace Sciences and Aviation Technology, May 2003

Ahmed E. El-Mahdy, “Development of a Classifier for MFSK Signals Over Time Varying Flat Correlated Fading Channels Under Class A Impulsive Noise Environment”, in proc. 10th int. conf. Aerospace Sciences and Aviation Technology, May 2003.

EL-Mahdy A. E, and EL Shawadfy S. A..,” Optimum Receiver Under Class-A Implusive Noise For Flat Fading Channels,” in proc. 12th int. conf. Aerospace Sciences and Aviation Technology, Military Technical College, Cairo, Egypt, May 2007.

El-Bardaweny, A. El-Mahdy, and E. Saad, “Multiuser Channel Estimation and Detection for WCDMA Systms”, in proc. 5th int. Conf. on Electrical Engineering, Military Technical College, Cairo, Egypt, May 2006.

Makaryus A. H., El-Mahdy, A. E, El-gamel S. A.,”Analysis os a Jamming Technique Against IAC Monopulse Radar,” in proc. 9th int. conf. Aerospace Sciences and Aviation Technology, May 2001.

El-Mahdy, A. E., ”Optimal Asynchronous Detection of Rayleigh Fading MFSK Signals,” in proc. 9th int. conf. Aerospace Sciences and Aviation Technology, May 2001

El-Mahdy, A. E. ”Application of Expectation Maximization Algorithm to the Sequence Estimation of M-ary Phase Shift Keying Signals over Rayleigh Fading Channel, “in proc. 9th int. conf. Aerospace Sciences and Aviation Technology, May 2001.

Makaryus A. H., El-Mahdy, A. E, El-gamel S. A, ”Performance of Modern Guided Systems in Presence of Jamming Signals,” in proc. 9th int. conf. Aerospace Sciences and Aviation Technology, May 2001