Research


Current Research Topics:


  • Communications with Intelligent reflecting surface

  • Aerial terrestrial integrated network

  • Communications on THz bands

  • AI-based PHY layer design for communication systems

  • Communications with RF-FSO integrated systems

  • Infrastructure-less and robust communications

  • Cell-free massive MIMO for next generation of communications


Publications:

Journal Articles (Published, Accepted, and Submitted)

· C. Pu, K. K. R. Choo, S. Lim, and I. Ahmed, "liteGAP: Lightweight Group Authentication Protocol for Internet of Drones Environment", submitted in IEEE Systems Journal, Sep. 2022

· M. Haider, I. Ahmed, A. Rubaai, C. Pu, and D. B. Rawat, "GAN-based Channel Estimation for IRS-aided Communication Systems", submitted in IEEE Trans. Vehicular Tech., Aug. 2022

· I. Ahmed, M. Z. Hassan, A. Rubaai, K. Hasan, C. Pu, "Data Driven Channel Estimation for Cell-Free Aerial Terrestrial Integrated Network", submitted in IEEE Trans. Vehicular Tech., Aug. 2022

· R. Deka, V. Mehra, I. Ahmed, S. Anees, M. S. Alam, "On the Performance and Optimization of HAPS Assisted Dual-Hop Hybrid RF/FSO System," accepted in IEEE Access, July 2022. Link: Early Access

· C. Pu, H. Zerkle, A. Wall, S. Lim, K. R. Choo, and I. Ahmed, "A Lightweight and Anonymous Authentication and Key Agreement Protocol for Wireless Body Area Networks," accepted in IEEE Internet of Things Journal, May 2022

· C. Pu, A. Wall, K. R. Choo, I. Ahmed, and S. Lim, "A Lightweight and Privacy-Preserving Mutual Authentication and Key Agreement Protocol for Internet of Drones Environment," accepted in IEEE Internet of Things Journal, Mar 2022

· S. R. Sabuj, M. Rubaiat, M. Iqbal, M. Mobashera, A. Malik, I. Ahmed, and M. A. Matin, “Machine-type Communications in NOMA-based Terahertz Wireless Networks,” accepted in International Journal of Intelligent Networks, Apr 2022.

· I. Ahmed, S. Yan, D. B. Rawat, and C. Pu, “Dynamic Resource Allocation for IRS Assisted Energy Harvesting Systems with Statistical Delay Constraint,” accepted in IEEE Trans. on Vehicular Tech, 2021. Early Access: Link

· C. Pu, I. Ahmed, E. Allen, and K. K. R. Choo, “A Stochastic Packet Forwarding Algorithm in Flying Ad Hoc Networks: Design, Analysis, and Evaluation,” accepted in IEEE Access, 2021. Early Access: Link

· M. S. Alam, H. Yanikomeroglu, I. Ahmed, and G. Kaddoum, “Bursty Impulsive Noise Mitigation in NOMA: A MAP Receiver-based Approach,” in IEEE Communications Letters, 2021 doi: 10.1109/LCOMM.2021.3089725.

· I. Ahmed, M. S. Alam, M. J. Hossain, and G. Kaddoum, “Deep Learning for MMSE Estimation of a Gaussian Source in the Presence of Bursty Impulsive Noise,” IEEE Commun. Letters, vol. 25, no. 4, pp. 1211-1215, April 2021

· I. Ahmed, I. Ahmed, and M. J. Hossain, “Optimal Stochastic Power Allocation and Relay Selection for Energy Harvesting Systems”, IEEE Wireless Commun. Letters, vol. 6, no. 4, pp. 546-549, Aug. 2017

· O. Alhussein, I. Ahmed, J. Liang, and S. Muhaidat, “Unified Analysis of Diversity Reception in the Presence of Impulsive Noise”, IEEE Trans. on Vehicular Tech. vol. 66, no. 2, pp. 1408-1417, Feb. 2017

· L. Mohjazi, I. Ahmed, and S. Muhaidat, “Downlink Beamforming in Multi-User MISO Systems for RF-powered Cognitive Radio Networks, ”, IEEE Wireless Communications Letter vol. 21, no. 2, pp. 434-437, Feb. 2017

· I. Ahmed, K. T. Phan, and T. Le-Ngoc, “Optimal Stochastic Power Control for Energy Harvesting Systems with Delay Constraints”, IEEE J. Sel. Areas Commun., vol. 34, pp. 3512-3527, Dec. 2016

· I. Ahmed, A. Ikhlef, R. Schober, and R. K. Mallik, “Power Allocation for Conventional and Buffer-Aided Link Adaptive Relaying Systems with Energy Harvesting Nodes,” IEEE Trans. on Wireless Commun., vol.13, pp. 1182-1195, Mar. 2014

· I. Ahmed, A. Ikhlef, D. W. K. Ng, and R. Schober, “Power Allocation for a Hybrid Energy Harvesting Transmitter,” IEEE Trans. on Wireless Commun., vol. 12, pp. 6255–6267, Dec. 2013

· I. Ahmed, A. Ikhlef, R. Schober, and R. K. Mallik, “Joint Power Allocation and Relay Selection in Energy Harvesting AF Relay Systems,” IEEE Wireless Commun. Letters., vol. 2, pp. 239–242, Apr. 2013

· I. Ahmed, A. Nasri, D. S. Michalopoulos, R. Schober, and R. K. Mallik, “Relay Subset Selection and Fair Power Allocation for Best and Partial Relay Selection in Generic Noise and Interference,” IEEE Trans. on Wireless Commun., vol. 11, pp. 1828–1839, May 2012

· I. Ahmed, A. Nasri, R. Schober, and R. K. Mallik, “Asymptotic Performance of Generalized Selection Combining in Generic Noise and Fading,” IEEE Trans. on Commun., vol. 60, pp. 916–922, May 2012

· T. Islam, I. Ahmed, S. Mallick, F. Alam, and M. S. Rahman, “Multiuser Channel Estimation Technique for STBC-OFDM Systems Based on Blocked Pilot Grid,” Journal of Bangladesh Electronics Society, vol. 2, no. 6, pp. 6–11, Dec. 2006.

· I. Ahmed, K. Salatuzzaman, M. Z. R. Khan, and M. A. Hoque, “A Web based Prepaid Printing System by Server Modification,” Journal of Bangladesh Electronics Society, vol. 5, no. 1, pp. 13–18, June 2005.

Conference Articles (Published and Submitted)

· N. S. Ferdous, I. Ahmed, U. Hany, L. Akter, R. Annavajjala, C. Pu, "Low Complexity Resource Allocation for Multiuser Uplink Communication Systems," accepted in IEEE TSP, June 2022

· M. F. Haider, I. Ahmed, and D. B. Rawat, "Cyber Threats and Cybersecurity Reassessed in UAVs Assisted Cyber Physical Systems," accepted in IEEE ICUFN, May 2022

· K. Hasan, S. Shetty, T. Islam, and I. Ahmed, "Predictive Cyber Defense Remediation against Advanced Persistent Threat in Cyber-Physical Systems," accepted in IEEE ICCCN, Apr 2022

· C. Pu, A. Wall, I. Ahmed, and K. R. Choo, "SecureIoD: A Secure Data Collection and Storage Mechanism for Internet of Drones," accepted in IEEE MDM, Mar 2022

· W. Xu, I. Ahmed, R. Annavajjala, C.Pu, and W. S. Yoo, "Joint Multi-Antenna Processing with Multi-Label Classification Using Deep Neural Networks," submitted in IEEE VTC Spring, 2022.

· R. Deka, V. Mishra, I. Ahmed, S. Anees, and M. S. Alam, “Performance Analysis of HAPS assisted Dual-Hop Hybrid RF/FSO System,” Proc. of IEEE VTC Fall, 2021.

· I. Ahmed, W. Xu, R. Annavajjala, and W. S. Yoo, “Joint Demodulation and Decoding with Multi-Label Classification Using Deep Neural Networks,” Proc. of IEEE ICAIIC, 2021, Jeju Island, Korea. (Excellent Paper Award)

· I. Ahmed and R. Annavajjala, “Bayesian CRLB for Joint AoA, AoD, and Channel Estimation Using UPA in Millimeter-wave Communications,” Proc. of IEEE VTC Spring, 2020, Antwerp, Belgium.

· I. Ahmed and E. Allen, “Diversity Combining with Deep Neural Network for Generic Noise and Interference,” Proc. of IEEE VTC Spring, 2020, Antwerp, Belgium.

· I. Ahmed, I. Ahmed, M. J. Hossain, and S. Sadeque, “Performance Analysis of Dual-hop Relay Systems for Generalized Fading Channels and Energy Harvesting Nodes,” Proc. of IEEE WiSEE, 2019

· I. Ahmed, K. T. Phan, and T. Le-Ngoc, “Stochastic User Scheduling and Power Control for Energy Harvesting Networks with Statistical Delay Provisioning,” Proc. of IEEE PIMRC, 2015, Hong Kong.

· I. Ahmed, K. T. Phan, and T. Le-Ngoc, “Optimal Stochastic Power Control for Energy Harvesting Systems with Statistical Delay Constraint,” Proc. of IEEE Globecom, 2015, San Diego, USA.

· I. Ahmed, M. J. Hossain, and I. Ahmed, “Resource Allocation for Decode–and–Forward Relayed System with Interference Aided Energy Harvesting,” Proc. of IEEE ICUWB, 2015, Montreal, Canada.

· I. Ahmed, A. Ikhlef, D. W. K. Ng, and R. Schober, “Power Allocation for a Hybrid Energy Harvesting Relay System with Imperfect Channel and Energy State Information,” Proc. of IEEE WCNC, 2014, Istanbul, Turkey.

· I. Ahmed, A. Ikhlef, D. W. K. Ng, and R. Schober, “Optimal Resource Allocation for Energy Harvesting Two-way Relay Systems with Channel Uncertainty,” Proc. of IEEE GlobalSIP, 2013, Austin, Texas, USA.

· I. Ahmed, A. Ikhlef, D. W. K. Ng, and R. Schober, “Optimal Power Allocation for a Hybrid Energy Harvesting Transmitter,” Proc. of IEEE ICC, June 2013, Hungary, Budapest.

· I. Ahmed, A. Ikhlef, R. Schober, and R. K. Mallik, “Power Allocation in Energy Harvesting Relay Systems,” Proc. of IEEE VTC, 2012, Yokohama, Japan.

· I. Ahmed, A. Nasri, D. S. Michalopoulos, R. Schober, and R. K. Mallik, “Performance Analysis and Power Allocation of AF Best Relay Selection in Generic Noise,” Proc. of IEEE WCNC, 2012, Paris, France.

· I. Ahmed, R. Schober, and R. K. Mallik, “Asymptotic Performance of Lp-Norm MIMO Detection,” Proc. of IEEE VTC, 2010, Ottawa, Canada.

· M. A. A. Hasan, F. Nabita, A. Khandakar, F. Ahmed, and I. Ahmed, “Analytical Evaluation of Timing Offset Error in OFDM System,” Proc. of ICCSN, 2010, Singapore.

· T. Kamal, K. A. Chowdhury, R. H. Disha, F. Ahmed, M. S. Alam, and I. Ahmed, “Joint margin and rate adaptive resource allocation of multiuser OFDM system using genetic algorithms,” Proc. of ICCIT, 2010, Dhaka, Bangladesh.

· I. Ahmed and S. P. Majumder, “Adaptive Resource Allocation Based on Modified Genetic Algorithm and Particle Swarm Optimization for Multiuser OFDM Systems,” Proc. of ICECE, 2008, Dhaka, Bangladesh.

· S. Mallick, I. Ahmed, and S. P. Majumder, “Analytical Performance Evaluation of an OFDM System in the Presence of Carrier Frequency Offset, Phase Noise, and Timing Jitter,” Proc. of IEEE TENCON, 2008, Hyderabad, India.

· M. A. Matin, I. Ahmed, and R. Matin, “Wave-Particle Interaction in an Unstable Plasma Four–Particle Approach,” Proc. of ICECE, 2008, Dhaka, Bangladesh.

· T. Islam, I. Ahmed, S. Mallick, F. Alam, and M. S. Rahman, “Block Faded Channel Estimation for Multiuser STBC-OFDM Systems,” Proc. of IEEE TENCON, 2006, Hong Kong.

· I. Ahmed, K. M. Salatuzzaman, and M. A. Joarder, “A Computerized Prepaid Printing System by Server Modification,” Proc. of ICCIT, 2005, Dhaka, Bangladesh.