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Tier-1 Publication Venues
Journal Articles
Journal Articles
Year 2025
[J38] M. S. Sana, I. Ahmad et al.,., "Secure UAV-RIS-Enabled IoT Systems: Federated DDPG With Attention Mechanism for Adversarial Attack Mitigation," in IEEE Internet of Things Journal (IEEE IoT-J), early access, 2025, doi: 10.1109/JIOT.2025.3580969.
[J37] I. Ahmad, R. Narmeen, H. Tabassum and Z. Becvar, "Intelligent Localization-Based DDPG for UAV-Borne RIS in Vehicular Communication," in IEEE Transactions on Vehicular Technology (IEEE TVT), early access, 2025, doi: 10.1109/TVT.2025.3578644.
[J36] I. Ahmad et al., "Quantum CNN for Detection and Identification of UAV-Enabled Non-Terrestrial Networks," in IEEE Wireless Communications Magazine (IEEE WCM), vol. 32, no. 3, pp. 28-36, June 2025, doi: 10.1109/MWC.001.2400419.
[J35] S. Wu, L. Yang, I. Ahmad et al., "DRL-Based Pricing-Driven for Task Offloading and Dynamic Resource in Vehicle Edge Computing," in IEEE Transactions on Mobile Computing (IEEE TMC), early access, 2025, doi: 10.1109/TMC.2025.3569817.
[J34] Y. Liang, L. Yang, I. Ahmad, and M. Valkama, "Covert Transmission and Physical-Layer Security of STAR-RIS-Assisted Uplink SGF-NOMA Systems," in IEEE Transactions on Communications (IEEE TCOM), early access, 2025, doi: 10.1109/TCOMM.2025.3565500.
[J33] I. Ahmad, "Intelligent Task Offloading Decisions for Enhanced Swarm-Based UAV Surveillance," in IEEE Transactions on Aerospace and Electronic Systems (IEEE TAES), early access, 2025, doi: 10.1109/TAES.2025.3564282.
[J32] J. Li L. Yang, I. Ahmad et al., "Multi-Layer Transmitting RIS-Aided Receiver for Collaborative Jamming and Anti-Jamming Networks," in IEEE Transactions on Wireless Communications (IEEE TWC), early access, 2025 doi: 10.1109/TWC.2025.3554386.
[J31] I. Ahmad, R. Narmeen, M. W. Aftab, Y. Alkhrijah, M. A. Alawad and A. Kaushik, "Random Access Optimization With Generative Adversarial Networks in Industrial IoT Using Deep Deterministic Policy Gradient Approach," in IEEE Open Journal of the Communications Society (IEEE OJCOMS), vol. 6, pp. 2945-2957, 2025, doi: 10.1109/OJCOMS.2024.3506782.
Year 2024
[J30] R. Narmeen, P. Mach, Z. Becvar, and I. Ahmad, "Joint Exit Selection and Offloading Decision for Applications Based on Deep Neural Networks," in IEEE Internet of Things Journal (IEEE IoT-J), vol. 11, no. 23, pp. 38098-38112, 1 Dec.1, 2024. doi: 10.1109/JIOT.2024.3444898.
[J29] I. Ahmad et al., "Optimizing Cell Association and Stability in Integrated Aerial-to-Ground Next-Generation Consumer Wireless Networks," in IEEE Transactions on Consumer Electronics (IEEE TCE), early access, 10.1109/TCE.2024.3416432
[J28] I. Ahmad, Z. Becvar, P. Mach and D. Gesbert, "Coordinated Machine Learning for Energy Efficient D2D Communication," in IEEE Wireless Communications Letters (IEEE WCL), vol. 13, no. 5, pp. 1493-1497, May 2024. 10.1109/LWC.2024.3377444
[J27] I. Ahmad et al., "Machine-Learning-Based Optimal Cooperating Node Selection for Internet of Underwater Things," in IEEE Internet of Things Journal (IEEE IoT-J), vol. 11, no. 12, pp. 22471-22482, June, 2024. 10.1109/JIOT.2024.3381834
[J26] I. Ahmad, Z. Kaleem, J. Plachy, H. Tabassum, Z. Becvar, and W. Saad, "Guest Editorial: Flexible Reconfigurable Intelligent Surfaces for Integrated Air-to-ground Internet of Things: Architecture, Recent Advances, and Future Applications," in IEEE Internet of Things Magazine (IEEE IoTM), vol. 7, no. 2, pp. 12-13, March 2024. 10.1109/MIOT.2024.10463699
Year 2023
[J25] I. Ahmad et al., "Co-Channel Interference Management for Heterogeneous Networks Using Deep Learning Approach," Information, vol. 14, no. 139, 2023. https://doi.org/10.3390/info14020139
[J24] R. Narmeen and I. Ahmad, "Co-channel Interference Evaluation for Coexisting Public-Safety Networks and 5G Commercial Network," Journal of Smart Internet of Things, vol. 2, Dec. 2023.
Year 2022
[J23] I. Ahmad, R. Narmeen, Z. Becvar, and I. Guvenc, "Machine Learning-Based Beamforming for Unmanned Aerial Vehicles Equipped with Reconfigurable Intelligent Surfaces," in IEEE Wireless Communications Magazine (IEEE WCM), vol. 29, no. 4, pp. 32-38, August 2022. 10.1109/MWC.004.2100694
Year 2021
[J22] Z. Kaleem, I. Ahmad, and A. Jamalipur, “Artificial Intelligence-Driven Real-Time Automatic Modulation Classification Scheme for Next-Generation Cellular Networks,” IEEE Access, Nov. 2021.
[J21] R. Narmeen, I. Ahmad, D. B. D. Costa, and S. Muhaidat, “Shortest Propagation Delay-based Relay Selection for Underwater Acoustic Sensor Networks,” IEEE Access, pp. 37923 – 37935, Feb. 2021.
Year 2020
[J21] I. Ahmad, J.Y. Jang, and K. H. Chang, "QoS Priority-Based Mobile Personal Cell Deployment with Load Balancing for Interference Reduction between Users on Coexisting Public Safety and Railway LTE Networks," Electronics, vol. 9, no.12. 2020. https://doi.org/10.3390/electronics9122136
[J20] J. Guo, I. Ahmad, K. H. Chang, "Classification, positioning, and tracking of drones by HMM using acoustic circular microphone array beamforming," Journal of Wireless Communication Network, 2020. https://doi.org/10.1186/s13638-019-1632-9
[J19] U. Ahmad, I. Ahmad, J. Xiao, and K. H. Chang, “Cooperative Resource Management for C-V2I Communications in a Dense Urban Environment,” Vehicular Communications, August 2020.
[J18] H. Teng, I. Ahmad, A. Msm and K. Chang, "3D Optimal Surveillance Trajectory Planning for Multiple UAVs by Using Particle Swarm Optimization With Surveillance Area Priority," IEEE Access, vol. 8, pp. 86316-86327, 2020, doi: 10.1109/ACCESS.2020.2992217.
[J17] L. Shi, I. Ahmad, and K. H. Chang, "Service Group Based FOFDM-IDMA Platform to Support Massive Connectivity and Low Latency Simultaneously in the Uplink IoT Environment," Wireless Communications and Mobile Computing, vol. 2020, Article ID 8517372, 6 pages, 2020. https://doi.org/10.1155/2020/8517372
[J16] I. Ahmad and K. H. Chang, "Mission-critical user priority-based cooperative resource allocation schemes for multi-layer next-generation public safety networks, "Physical Communication, vol. 38, 2020. https://doi.org/10.1016/j.phycom.2019.100926
[J15] J. Guo, I. Ahmad, and K. H. Chang, “Classification, positioning, and tracking of drones by HMM using acoustic circular microphone array beamforming,” EURASIP Journal of Wireless Communication and Networking, Vol. 2020, No. 9, pp. 1-19, Jan. 2020.
[J14] I. Ahmad, J.Y. Jang 1 and K. H. Chang, “QoS Priority-Based Mobile Personal Cell Deployment with Load Balancing for Interference Reduction between Users on Coexisting Public Safety and Railway LTE Networks,” Electronic, vol. 9, no. 12, pp. 1-13, Dec. 2020.
Year 2019
[J13] Y He, W Chen, I Ahmad, L Shi, KH Chang, "Compressive sensing based random access for machine type communications considering tradeoff between link performance and latency," EURASIP Journal on Wireless Communications and Networking, 2019.
[J12] I. Ahmad and K. H. Chang, “Mission critical user priority-based random-access scheme for collision resolution for coexisting PS-LTE and LTE-M networks,” IEEE Access, vol. 7, pp. 115505 – 115517, Aug. 2019.
[J11] I. Ahmad and K. H. Chang, “Effective SNR mapping and link adaptation strategy for next-generation underwater acoustic communications networks: a cross-layer approach,” IEEE Access, Vol. 7, pp. 44150-44164, Apr. 2019.
[J10] I. Ahmad and K. H. Chang, “Downlink power allocation strategy for next-generation underwater acoustic communications networks,” Electronics, Oct. 2019.
[J9] I. Ahmad, L. D. Nguyen and D. B. Ha, “Quality-of-service aware game theory-based uplink power control for 5G heterogeneous networks,” Mobile Networks and Applications, Vol. 24, No. 2, pp 556–563 pp. 1-8, Apr. 2019.
[J8] Y. He, I. Ahmad, L. Shi, and K. H. Chang, “SVM-based drone sound recognition using the combination of HLA and WPT techniques in practical noisy environment, KSII Transactions on Internet and Information Systems, May. 2019.
Year 2018
[J7] Z. Kaleem, M. Z. Khaliq, A. Khan, I. Ahmad, and T. Q. Duong, "PS- CARA: context-aware resource allocation scheme for mobile public safety networks," Sensors, vol. 18, no. 5, pp. 1-17, May 2018.
[J6] L. Shi, I. Ahmad, Y. He, and K. H. Chang, "Hidden Markov model-based drone sound recognition using MFCC technique in practical noisy environments", Journal of Communications and Networks, Vol. 20, No. 5, pp. 509-518, Oct. 2018.
Year 2017
[J5] I. Ahmad, W. Chen, and K. H. Chang, "LTE-railway user priority-based cooperative resource allocations schemes for coexisting public safety and railway networks," IEEE Access, vol. 5, pp: 7958-8000, May 2017.
[J4] W. Chen, I. Ahmad, and K. H. Chang, "Co-channel interference management using eICIC/FeICIC with coordinated scheduling for the coexistence of PS-LTE and LTE-R networks," EURASIP Journal on Wireless Communications and Networking, vol. 2017, no. 34, pp. 1-14, Dec. 2017.
[J3] I. Ahmad and K. H. Chang, “Analysis on MIMO transmit diversity techniques for ship ad-hoc network under a maritime channel model in coastline areas,” KICS Letter, vol. 42, no. 02, pp: 383- 385, Feb. 2017.
Year 2016
[J2] W. H. Lim, H. C. Jeong, I. Ahmad, and K. H. Chang, “Outage probability and throughput management using CoMP under the coexistence of PS-LTE and LTE-R networks,” Journal of Advanced Navigation Technology, vol. 6, no. 20, pp.595-603, Dec. 2016.
Year 2014
[J1] I. Ahmad, Z. Kaleem, and K. H. Chang, “QoS Priority Based Femtocell User Power Control for Interference Mitigation in 3GPP LTE-A HetNet,” Journal of KICS, February 2014. DOI: 10.7840/kics.2014.39B.2.61.
Patents Granted/Filled
[P12] KyungHi Chang, Ishtiaq Ahmad, “Mission-critical user priority-based random access method and apparatus for collision resolution in coexisting PS-LTE and LTE-M network,” US patent registration number US10645734B2, 2020-05-05.
[P11] KyungHi Chang, Ishtiaq Ahmad, Effective SNR mapping and link adaptation strategy and apparatus for next generation underwater acoustic communications networks, Korean patent registration number 1022165150000, 2021.02.09.
[P10] KyungHi Chang, Jang Jinyoung, Ishtiaq Ahmad, QoS Priority-based Mobile Personal Cell Deployment with Load Balancing and Interference Reduction for PS-LTE Users on Coexisting Public Safety and Railway Networks, Korean patent registration number 1022100660000, 2021.01.26.
[P9] KyungHi Chang, Ishtiaq Ahmad, and Zeeshan Kaleem, "System and method to mitigate interference of 3GPP LTE-A HetNet according to priority of service using coordinated multipoint transmission and reception,” Korean patent registration number 1015119050000, 2015.04.07.
[P8] KyungHi Chang, Ishtiaq Ahmad, “Mission Critical User Priority-based Random Access Method and Apparatus for Collision Resolution for Coexisting PS-LTE and LTE-M Network, Korean patent registration number 1021345910000, 2020.07.10.
[P7] KyungHi Chang, Junfeng Guo, and Ishtiaq Ahmad, “Method and Apparatus for Classification, positioning and tracking of drones by HMM using acoustic circular microphone array beamforming,” Korean patent registration number 1021911850000, 2020.12.09.
[P6] KyungHi Chang, Lin Shi, and Ishtiaq Ahmad, “Service group based FOFDM-IDMA platform to support massive connectivity in the uplink IOT environment”, Korean patent registration number 1018869760000, 2018.08.
[P5] KyungHi Chang, Ishtiaq Ahmad, and Chen Wan, “Method and Apparatus for managing interference and allocating resource based on LTE-R user priority using the cooperative communication schemes under the coexistence of PS-LTE and LTE-R networks”, Korean patent registration number 1017858740000, 2017.09.29.
[P4] KyungHi Chang, Ishtiaq Ahmad, and Chen Wan, “Method and System for controlling co-channel interference based on eICIC/FeICIC with coordinated scheduling for the coexistence of PS-LTE and LTE-R networks”, Korean patent registration number 1017884790000, 2017.10.13.
[P3] KyungHi Chang and Ishtiaq Ahmad, “A method of allocating cooperative resources based on mission-critical user priority for the next generation public safety communication network with a multi-layered structure,” Korean patent Application number 10-2019-0108746, 2019.09.03.
[P2] KyungHi Chang Umair Ahmad, and Ishtiaq Ahmad, System and method for co-channel interference management using cooperative scheduling and dynamic inter-cell interference cancellation in a cellular V2I environment in a dense city, Korean Patent Application Date (2021.01.22).
[P1] KyungHi Chang, Hu Teng, and Ishtiaq Ahmad, Method and Apparatus for Optimizing 3D Surveillance Path Planning of Multiple Unmanned Aerial Vehicles using Particle Swarm Optimization, Korean Patent Application Date (2021.05.13).
Standard Contribution
Support uplink connectivity under network congestion and emergency, 3GPP TSG-SA WG1 Meeting #88, S1-193052, 2019. 11.
Books/Chapters
[B4] I. Ahmad, Z. Kaleem, R. Narmeen, H. Tabassum, Z. Becvar, "Reconfigurable Intelligent Surface for Unmanned Air Vehicles communications" Unmanned System Technologies, Springer. (To be published)
[B3] Z. Kaleem, I. Ahmad, Trung Q. Duong, "Intelligent Unmanned Air Vehicles Communications for Public Safety Networks," Unmanned System Technologies, Springer, May 2022.
[B2] Z. Kaleem, I. Ahmad, Trung Q. Duong, "Intelligent Unmanned Air Vehicles for Public Safety Networks: Emerging Technologies and Research Directions " Intelligent Unmanned Air Vehicles Communications for Public Safety Networks, 2022.
[B1] U. A. Mughal, I. Ahmad, K. H. Chang, "UAVs Path Planning by Particle Swarm Optimization Based on Visual-SLAM Algorithm" Intelligent Unmanned Air Vehicles Communications for Public Safety Networks, 2022.
Conferences
[C23] I. Ahmad, Z. Becvar, and P. Mach, "Joint Optimization of Channel Reuse and Power Allocation in Shared D2D Communication Mode, in Proc. IEEE Vehicular Technology Conference (VTC) Spring, Jun. 2025. (Accepted for Publication)
[C22] I. Ahmad et al.,” Securing the Skies: Intelligent Beamforming UAV-RIS Communication," in Proc. IEEE International Conference on Communications (ICC), Jun. 2025. (Accepted for Publication)
[C21] Y. Alkhrijah, H. Khan, I. Ahmad et al., Unsupervised Learning-based Coverage Enhancement for RIS-aided UAV Communication," in Proc. IEEE International Conference on Communications (ICC), Jun. 2025. (Accepted for Publication)
[C20] A. Almadhor, I. Ahmad et al, "DDPG-based UAV Trajectory Design for Fair and Energy Efficient Communication," in Proc. IEEE International Conference on Communications (ICC), Jun. 2025. (Accepted for Publication)
[C19] I. Ahmad, R. Narmeen, M. A. Alawad, Y. Alkhrijah and P. -H. Ho, "Integrating Visual Geometry and Mask Region CNN for Enhanced UAV Detection and Identification," 2024 IEEE 100th Vehicular Technology Conference (VTC2024-Fall), Washington, DC, USA, 2024, pp. 1-6, doi: 10.1109/VTC2024-Fall63153.2024.10757938.
[C18] I. Ahmad, R. Narmeen, M. A. Alawad, Y. Alkhrijah and V. Sciancalepore, "DRL-based Resource Management for Task-Centered Semantic Communication," 2024 IEEE 35th International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC), Valencia, Spain, 2024, pp. 1-6, doi: 10.1109/PIMRC59610.2024.10817269.
[C17] I. Ahmad, Z. Becvar, and P. Mach, "Coordinated Machine Learning for Channel Reuse and Transmission Power Allocation for D2D Communication," IEEE Global Communications Conference (IEEE Globecom 2024), 2024. (Accepted for Publication)
[C16] I. Ahmad, W. Chen, and K. H. Chang, “Co-channel interference analysis using cooperative communication schemes for the coexistence of PS-LTE and LTE-R networks, in Proc. IEEE ICCE Special Session on LTE Technologies and Services, Vietnam, July 2016, pp: 181-182.
[C15] I. Ahmad and K. H. Chang, “Design of system-level simulator architecture for underwater acoustic communications and networking”, in Proc. IEEE ICTC, Oct. 2016, Jeju, Korea.
[C14] I. Ahmad and K. H. Chang, "Analysis on MIMO transmit diversity and multiplexing techniques for ship ad-hoc networks under a maritime channel model in coastline areas," in Proc. of IEEE ICTC, Oct. 2017, pp. 18-20.
[C13] I. Ahmad and K. H. Chang, “Effective SNR Approach of Link to System Level Mapping in Underwater Acoustic Communications Network,” in Proc. KICS, Jan. 2017, pp. 82.
[C12] I. Ahmad and K. H. Chang, “Link-level Performance Evaluation of MIMO Transmit Diversity and Multiplexing Techniques for Ship Ad-hoc Networks,” in Proc. KICS, Jan. 2017.
[C11] J. Y. Jang, I. Ahmad, and K. H. Chang, “Interoperability analysis between PS-LTE and LTE-maritime systems,” in Proc. KICS, June 2017, Korea.
[C10] Alamgir, I. Ahmad, and K. H. Chang, “On the Underwater Channel Model and Network Layout,” in Proc. KICS, Jan. 2018, pp: 202-203.
[C9]J. Xiao, I. Ahmad, and K. H. Chang, “MBMS and V2V Communications for Vehicle Platooning in eV2X System,” in Proc. KICS, Jun. 2018.
[C8] L. Jaehoo, I. Ahmad, J. Xiao, and K. H. Chang, “LTE-V2X network Mode4 sensing Semi-Persistent Scheduling,” in Proc. KICS, Jun. 2018. pp. 1-2.
[C7] U. A. Mughal, I. Ahmad, and K. H. Chang, “Virtual cells operation for 5G V2X communications,” in Proc. KICS, Jan. 2019, Korea, pp: 1-2.
[C6] U. A. Mughal, I. Ahmad, and K. H. Chang, “Cellular V2X communications in unlicensed spectrum: compatible coexistence with VANET in 5G systems, in Proc. JCCI, May 2019, pp. 1-2.
[C5] I. Ahmad, Z. Kaleem, and K.H. Chang, ''Block error rate and UE throughput performance evaluation using LLS and SLS in 3GPP LTE downlink,” in Proc. Conference of Korean Institute of Communications and Information Sciences (KICS), Jan 2013, Korea, pp.512-516.
[C4] Z. Kaleem, I. Ahmad, and Chankil. Lee, ''Smart and Energy Efficient LED Street Light Control System using ZigBee Network,'' in Proc. FIT 2014, Islamabad, Pakistan, Dec. 2014, pp: 361-365.
[C3] W. Chen, I. Ahmad, and K.H. Chang, “Analysis on the Co-channel Interference for the Coexistence of PS-LTE and LTE-R Networks,” in Proc. Conference of Korean Institute of Communications and Information Sciences (KICS), June 2016, Jeju, Korea, pp: 202-203.
[C2] Alamgir, I. Ahmad, and K.H. Chang, “On the UnderWater Channel Model and Network Layout,” in Proc. Conference of Korean Institute of Communications and Information Sciences (KICS), Jan. 2018, Korea, pp: 202-203.
[C1] I. Ahmad, Z. Kaleem, and K.H. Chang, "Uplink power control for interference mitigation based on users priority in two-tier femtocell network,” in Proc. IEEE ICTC, Oct. 2013, Jeju, Korea, pp. 474-475.
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