Handover optimization in femtocell networks. - Waqas Khalid; Kyung Sup Kwak (ICTC, 2013)

Lightweight Security Middleware to Detect Malicious Content in NFC Tags or Smart Posters. - Sufian Hameed; Bilal Hameed; Syed Atyab Hussain; Waqas Khalid (TrustCom, 2014)

Secure communication with beamforming and jamming in time-varying channels. - Heejung Yu; Waqas Khalid (ICUFN, 2016)

Improvement of spectrum utilization with retransmission in cognitive radio networks: Analytical approach. - Waqas Khalid; Heejung Yu; Yousaf Bin Zikria (ICUMT, 2017)

Optimal sensing performance for cooperative and non-cooperative cognitive radio networks. - Waqas Khalid; Heejung Yu (Int. J. Distributed Sens. Networks, 2017)

Considering Industry 4.0 aspects in the supply chain for an SME. - Kristina Bär; Zaza Nadja Lee Herbert-Hansen; Waqas Khalid (Prod. Eng., 2018)

Sensing and Utilization of Spectrum with Cooperation Interference for Full-Duplex Cognitive Radio Networks. - Waqas Khalid; Heejung Yu (ICUFN, 2019)

Topological properties of cellular neural networks. - Muhammad Imran 006; Muhammad Kamran Siddiqui; Abdul Qudair Baig; Waqas Khalid; Hani Shaker (J. Intell. Fuzzy Syst., 2019)

The degree of inventory centralization for food manufacturers. - Nona Fortian Corts; Zaza Nadja Lee Herbert-Hansen; Samuel Brüning Larsen; Waqas Khalid (Prod. Eng., 2019)

Spatial-Temporal Sensing and Utilization in Full Duplex Spectrum-Heterogeneous Cognitive Radio Networks for the Internet of Things. - Waqas Khalid; Heejung Yu (Sensors, 2019)

A Methodology for Assessment of Thermal Comfort, Ergonomic and Human Factors Effect on Learning Performance in Classroom Environment. - Waqas Khalid; Nosheen Anwar; Muhammad Sajid 002; Shahid Ikramullah Butt (AHFE (1), 2020)

Energy Efficient Resource Allocation and Computation Offloading Strategy in a UAV-enabled Secure Edge-Cloud Computing System. - Umar Ajaib Khan; Waqas Khalid; Saifullah Saifullah (SmartIoT, 2020)

Assessment of the impact of inventory optimization drivers in a multi-echelon supply chain: Case of a toy manufacturer. - Elena Chinello; Zaza Nadja Lee Herbert-Hansen; Waqas Khalid (Comput. Ind. Eng., 2020)

Residual Energy Analysis in Cognitive Radios with Energy Harvesting UAV under Reliability and Secrecy Constraints. - Waqas Khalid; Heejung Yu; Song Noh (Sensors, 2020)

On the Impact of Transceiver Impairments and Reflecting Elements for RIS-Aided Communications. - Waqas Khalid; Heejung Yu (ICTC, 2021)

Artificial Intelligence-Driven Real-Time Automatic Modulation Classification Scheme for Next-Generation Cellular Networks. - Zeeshan Kaleem; Muhammad Ali; Ishtiaq Ahmad; Waqas Khalid; Ahmed Alkhayyat 001; Abbas Jamalipour (IEEE Access, 2021)

Security Improvement With QoS Provisioning Using Service Priority and Power Allocation for NOMA-IoT Networks. - Waqas Khalid; Heejung Yu (IEEE Access, 2021)

RIS-Aided Physical Layer Security With Full-Duplex Jamming in Underlay D2D Networks. - Waqas Khalid; Heejung Yu; Dinh-Thuan Do; Zeeshan Kaleem; Song Noh (IEEE Access, 2021)

NNT: Nearest Neighbour Trapezoid Algorithm for IoT WLAN Smart Indoor Localization Leveraging RSSI Height Estimation. - Wilford Arigye; Mu Zhou; Muhammad Junaid Tahir; Waqas Khalid; Qiaolin Pu (J. Sensors, 2021)

Machine Learning for 5G MIMO Modulation Detection. - Haithem Ben Chikha; Ahmad S. Almadhor; Waqas Khalid (Sensors, 2021)

Advanced Physical-Layer Technologies for Beyond 5G Wireless Communication Networks. - Waqas Khalid; Heejung Yu; Rashid Ali 001; Rehmat Ullah 001 (Sensors, 2021)

Outage Performance Analysis of Hybrid Relay-Reconfigurable Intelligent Surface Networks. - Waqas Khalid; Md. Shahjalal; Heejung Yu (APCC, 2022)

Anticipating in Vehicle Accident using Recurrent Neural Network. - Waqar Riaz; Saifullah; Junaid Tahir; Waqas Khalid; Kamran Joyo; Shabeer Ahmad; Abdullah Azeem; Mudassar Laghari (ICISCAE, 2022)

Rate-Energy Tradeoff Analysis in RIS-SWIPT Systems With Hardware Impairments and Phase-Based Amplitude Response. - Waqas Khalid; Heejung Yu; Juphil Cho; Zeeshan Kaleem; Shabir Ahmad (IEEE Access, 2022)

Joint Design of Improved Spectrum and Energy Efficiency With Backscatter NOMA for IoT. - Chi-Bao Le; Dinh-Thuan Do; Adão Silva; Wali Ullah Khan; Waqas Khalid; Heejung Yu; Nhan Duc Nguyen (IEEE Access, 2022)

Learning-Aided UAV 3D Placement and Power Allocation for Sum-Capacity Enhancement Under Varying Altitudes. - Zeeshan Kaleem; Waqas Khalid; Ali H. Muqaibel; Ali Arshad Nasir; Chau Yuen; George K. Karagiannidis (IEEE Commun. Lett., 2022)

RSSI Fingerprint Height Based Empirical Model Prediction for Smart Indoor Localization. - Wilford Arigye; Qiaolin Pu; Mu Zhou; Waqas Khalid; Muhammad Junaid Tahir (Sensors, 2022)

Simultaneously Transmitting and Reflecting-Reconfigurable Intelligent Surfaces with Hardware Impairment and Phase Error. - Waqas Khalid; Muhammad Atif Ur Rehman; Trinh Van Chien; Heejung Yu (ICAIIC, 2023)

Impact of RIS on Outage Probability and Ergodic Rate in Wireless Powered Communication. - Waqas Khalid; Manish Nair; Trinh Van Chien; Heejung Yu (ICTC, 2023)

Enabling technologies for AI empowered 6G massive radio access networks. - Md. Shahjalal; Woojun Kim; Waqas Khalid; Seokjae Moon; Murad Khan; Shuzhi Liu; Suhyeon Lim; Eunjin Kim; Deok Won Yun; Joohyun Lee; Won Cheol Lee; Seung-Hoon Hwang; et al. (ICT Express, 2023)

Phase and 3-D Placement Optimization for Rate Enhancement in RIS-Assisted UAV Networks. - Maham Misbah; Zeeshan Kaleem; Waqas Khalid; Chau Yuen; Abbas Jamalipour (IEEE Wirel. Commun. Lett., 2023)

Simultaneous Transmitting and Reflecting-Reconfigurable Intelligent Surface in 6G: Design Guidelines and Future Perspectives. - Waqas Khalid; Zeeshan Kaleem; Rehmat Ullah 001; Trinh Van Chien; Song Noh; Heejung Yu (IEEE Netw., 2023)

SHM-NDN: A seamless hybrid mobility management scheme for named data mobile ad hoc networks. - Sana Fayyaz; Muhammad Atif Ur Rehman; Waqas Khalid; Byung-Seo Kim (Internet Things, 2023)

Outage Analysis for Active Reconfigurable Intelligent Surface-Enhanced Wireless Powered Communication Networks. - Waqas Khalid; Heejung Yu; Alexandros-Apostolos A. Boulogeorgos (ICAIIC, 2024)

Active RIS-Aided Terahertz Communications with Phase Error and Beam Misalignment. - Waqas Khalid; Heejung Yu; Farman Ali 001; Huiping Huang (ICTC, 2024)

Efficient UAVs Deployment and Resource Allocation in UAV-Relay Assisted Public Safety Networks for Video Transmission. - Naveed Khan; Ayaz Ahmad; Abdul Wakeel; Zeeshan Kaleem; Bushra Rashid; Waqas Khalid (IEEE Access, 2024)

Active Reconfigurable Intelligent Surface-Aided Terahertz Wireless Communications. - Waqas Khalid; Heejung Yu; Yazdan Ahmad Qadri (CoRR, 2024)

Overview of RIS-enabled secure transmission in 6G wireless networks. - Jungsook Bae; Waqas Khalid; Anseok Lee; Heesoo Lee; Song Noh; Heejung Yu (Digit. Commun. Networks, 2024)

Effects of co-channel interference on RIS empowered wireless networks amid multiple eavesdropping attempts. - Md. Roisul Ajom Ruku; Md. Ibrahim; A. S. M. Badrudduza; Imran Shafique Ansari; Waqas Khalid; Heejung Yu (ICT Express, 2024)

Reinforcement Learning for Energy-Efficient User Association in UAV-Assisted Cellular Networks. - Zeeshan Kaleem; Waqas Khalid; Ayaz Ahmad; Heejung Yu; Abdullah M. Almasoud; Chau Yuen (IEEE Trans. Aerosp. Electron. Syst., 2024)

RIS-Assisted Wireless Communications: Long-Term Versus Short-Term Phase Shift Designs. - Trinh Van Chien; Lam-Thanh Tu; Waqas Khalid; Heejung Yu; Symeon Chatzinotas; Marco Di Renzo (IEEE Trans. Commun., 2024)

Reconfigurable Intelligent Surface for Physical Layer Security in 6G-IoT: Designs, Issues, and Advances. - Waqas Khalid; Muhammad Atif Ur Rehman; Trinh Van Chien; Zeeshan Kaleem; Howon Lee; Heejung Yu (IEEE Internet Things J., 2024)

Adversarial Attacks and Defenses in 6G Network-Assisted IoT Systems. - Bui Duc Son; Tien Hoa Nguyen 001; Trinh Van Chien; Waqas Khalid; Mohamed Amine Ferrag; Wan Choi 001; Mérouane Debbah (IEEE Internet Things J., 2024)

Adaptive Network Selection for Latency-Aware V2X Systems Under Varying Network and Vehicle Densities. - Muhammad Zia Ul Haq; Nadia N. Qadri; Omer Chughtai; Sadiq Ahmad; Waqas Khalid; Heejung Yu (IEEE Access, 2025)

Optimal Operation of Active RIS-Aided Wireless Powered Communications in IoT Networks. - Waqas Khalid; Alexandros-Apostolos A. Boulogeorgos; Trinh Van Chien; Junse Lee; Howon Lee; Heejung Yu (IEEE Internet Things J., 2025)

Malicious Reconfigurable Intelligent Surfaces: Security Threats in 6G Networks. - Waqas Khalid; Trinh Van Chien; Wali Ullah Khan; Zeeshan Kaleem; Yousaf Bin Zikria; Taejoon Kim; Heejung Yu (IEEE Internet Things J., 2025)

Hierarchical Blockchain Radio Access Networks: Architecture, Modelling, and Performance Assessment. - Vasileios Kouvakis; Stylianos E. Trevlakis; Alexandros-Apostolos A. Boulogeorgos; Hongwu Liu; Waqas Khalid; Theodoros A. Tsiftsis; Octavia A. Dobre (IEEE Open J. Commun. Soc., 2025)

Quantum Skyshield: Quantum Key Distribution and Post-Quantum Authentication for Low-Altitude Wireless Networks in Adverse Skies. - Zeeshan Kaleem; Misha Urooj Khan; Ahmad Suleman; Waqas Khalid; Kai-Kit Wong; Chau Yuen (CoRR, 2025)

Adaptive Network Selection for Latency-Aware V2X Systems under Varying Network and Vehicle Densities. - Muhammad Zia Ul Haq; Nadia N. Qadri; Omer Chughtai; Sadiq A. Ahmad; Waqas Khalid; Heejung Yu (CoRR, 2025)