132 citations · 180 across the 15 of their papers we have counts for
17 papers
Beam Squint and Aperture--Bandwidth Limitations in Wideband RIS-Assisted THz Links
Waqas Khalid, Chiew Foong Kwong, David Chieng +1
This paper analyzes the ergodic rate of a wideband reconfigurable intelligent surface (RIS)-assisted terahertz link under beam squint and finite-resolution phase control. Independe…
Deterministic versus Stochastic Optimization for Joint Path Planning and Dynamic Time Splitting in Multiple-UAV-Cached IoT Networks
Trinh Van Chien, Dinh Thanh Tung, Waqas Khalid +3
This paper examines wireless-powered Internet of Things (IoT) networks involving multiple unmanned aerial vehicles (UAVs) equipped with backscatter and caching technologies to rela…
SecureDyn-FL: A Robust Privacy-Preserving Federated Learning Framework for Intrusion Detection in IoT Networks
Imtiaz Ali Soomro, Hamood Ur Rehman, S. Jawad Hussain ID +3
The rapid proliferation of Internet of Things (IoT) devices across domains such as smart homes, industrial control systems, and healthcare networks has significantly expanded the a…
Adaptive Network Selection for Latency-Aware V2X Systems under Varying Network and Vehicle Densities
Muhammad Z. Haq, Nadia N. Qadri, Omer Chughtai +3
This paper presents ANS-V2X, an Adaptive Network Selection framework tailored for latency-aware V2X systems operating under varying vehicle densities and heterogeneous network cond…
Quantum Skyshield: Quantum Key Distribution and Post-Quantum Authentication for Low-Altitude Wireless Networks in Adverse Skies
Zeeshan Kaleem, Misha Urooj Khan, Ahmad Suleman +3
Recently, low-altitude wireless networks (LAWNs) have emerged as a critical backbone for supporting the low-altitude economy, particularly with the densification of unmanned aerial…
Optimal Operation of Active RIS-Aided Wireless Powered Communications in IoT Networks
Waqas Khalid, A. -A. A. Boulogeorgos, Trinh Van Chien +3
Wireless-powered communications (WPCs) are increasingly crucial for extending the lifespan of low-power Internet of Things (IoT) devices. Furthermore, reconfigurable intelligent su…
Active RIS-Aided Terahertz Communications with Phase Error and Beam Misalignment
Waqas Khalid, Heejung Yu, Farman Ali +1
Terahertz (THz) communications will be pivotal in sixth-generation (6G) wireless networks, offering significantly wider bandwidths and higher data rates. However, the unique propag…
Active Reconfigurable Intelligent Surface-Aided Terahertz Wireless Communications
Waqas Khalid, Heejung Yu, Yazdan Ahmad Qadri
Terahertz (THz) communication is expected to be a key technology for future sixth-generation (6G) wireless networks. Furthermore, reconfigurable intelligent surfaces (RIS) have bee…
Adversarial Attacks and Defenses in 6G Network-Assisted IoT Systems
Bui Duc Son, Nguyen Tien Hoa, Trinh Van Chien +4
The Internet of Things (IoT) and massive IoT systems are key to sixth-generation (6G) networks due to dense connectivity, ultra-reliability, low latency, and high throughput. Artif…
Outage Analysis for Active Reconfigurable Intelligent Surface-Enhanced Wireless Powered Communication Networks
Waqas Khalid, Heejung Yu, Alexandros-Apostolos A. Boulogeorgos
Wireless powered communication (WPC) involves the integration of energy harvesting and data transmission. This allows devices to communicate without constant battery replacements o…
Efficient UAVs Deployment and Resource Allocation in UAV-Relay Assisted Public Safety Networks for Video Transmission
Naveed Khan, Ayaz Ahmad, Abdul Wakeel +3
Wireless communication highly depends on the cellular ground base station (GBS). A failure of the cellular GBS, fully or partially, during natural or man-made disasters creates a c…
Impact of RIS on Outage Probability and Ergodic Rate in Wireless Powered Communication
Waqas Khalid, Manish Nair, Trinh Van Chien +1
Wireless powered communication (WPC) combines information and energy transmission for energy-constrained nodes. Reconfigurable intelligent surfaces (RISs) are capable of controllin…
Overview of RIS-Enabled Secure Transmission in 6G Wireless Networks
JungSook Bae, Waqas Khalid, Anseok Lee +3
As sixth-generation (6G) wireless communication networks evolve, privacy concerns are expected due to the transmission of vast amounts of security-sensitive private information. In…
Reconfigurable Intelligent Surface for Physical Layer Security in 6G-IoT: Designs, Issues, and Advances
Waqas Khalid, M. Atif Ur Rehman, Trinh Van Chien +3
Sixth-generation (6G) networks pose substantial security risks because confidential information is transmitted over wireless channels with a broadcast nature, and various attack ve…
RIS-Assisted Wireless Communications: Long-Term versus Short-Term Phase Shift Designs
Trinh Van Chien, Lam Thanh Tu, Waqas Khalid +3
Reconfigurable intelligent surface (RIS) has recently gained significant interest as an emerging technology for future wireless networks thanks to its potential for improving the c…
Effects of Co-channel Interference on RIS Empowered Wireless Networks amid Multiple Eavesdropping Attempts
Md. Roisul Ajom Ruku, Md. Ibrahim, A. S. M. Badrudduza +1
This letter is concerned with the secrecy performance of reconfigurable intelligent surfaces (RIS)-aided wireless networks in the existence of multiple interferers towards the dest…
Simultaneous Transmitting and Reflecting-Reconfigurable Intelligent Surface in 6G: Design Guidelines and Future Perspectives
Waqas Khalid, Zeeshan Kaleem, Rehmat Ullah +3
Reconfigurable intelligent surfaces (RISs) have been considered as a promising technology for the sixth-generation (6G) wireless networks that can control wireless channels in a de…