Carrier frequency and timing offset tracking scheme for SC-FDE systems. - Heejung Yu; Myung-Soon Kim; Jae-Young Ahn (PIMRC, 2003)

Equalization scheme for OFDM systems in long delay spread channels. - Heejung Yu; Myung-Soon Kim; Taehyun Jeon; Sok-Kyu Lee (PIMRC, 2004)

Design of dual-band MIMO-OFDM system for next generation wireless LAN. - Heejung Yu; Taehyun Jeon; Sok-Kyu Lee (ICC, 2005)

Efficient Pattern-Based Emulation for IEEE 802.11a Baseband. - Il-Gu Lee; Heejung Yu; Sok-Kyu Lee; Jin Lee; Sin-Chong Park (IWSOC, 2005)

Design and prototype development of MIMO-OFDM for next generation wireless LAN. - Heejung Yu; Myung-Soon Kim; Eunyoung Choi; Taehyun Jeon; Sok-Kyu Lee (IEEE Trans. Consumer Electron., 2005)

Design and Implementation of Robust Time/Frequency Offset Tracking Algorithm for MIMO-OFDM Receivers. - Il-Gu Lee; Heejung Yu; Eunyoung Choi; Jungbo Son; Sok-Kyu Lee (VTC Spring, 2006)

Design and FPGA implementation of MIMO-OFDM based WLAN Systems. - Heejung Yu; Kyonghee Song; Kwhanghyun Ryu; Yunjoo Kim; Seungwook Min; Sok-Kyu Lee (VTC Spring, 2006)

Next generation wireless LAN system design and implementation based on MIMO-OFDM. - Heejung Yu; Kwhanghyun Ryu; Kyonghee Song; Yunjoo Kim; Seungwook Min; Sok-Kyu Lee (WCNC, 2006)

Bandwidth Efficient MC-CDMA Transmission over Frequency Selective Fading Channel in 1xEV-DV System. - Chanho Yoon; Jaekwon Kim; Heejung Yu; Sok-Kyu Lee; Joonhyuk Kang (IEICE Trans. Commun., 2006)

Large deviations analysis for the detection of 2D hidden Gauss-Markov random fields using sensor networks. - Youngchul Sung; H. Vincent Poor; Heejung Yu (ICASSP, 2008)

On optimal operating characteristics of sensing and training for cognitive radios. - Heejung Yu; Youngchul Sung; Yong Hoon Lee (ICASSP, 2008)

Information, energy and density for Ad Hoc sensor networks over correlated random fields: Large deviations analysis. - Youngchul Sung; Heejung Yu; H. Vincent Poor (ISIT, 2008)

Optimal Node Density for Two-Dimensional Sensor Arrays - Youngchul Sung; H. Vincent Poor; Heejung Yu (CoRR, 2008)

Amplify-Forward Relays with Superimposed Pilot Signals for Frequency-Selective Fading Channels. - Haksoo Kim; Sungho Choi; Heejung Yu; Youngchul Sung; Yong Hoon Lee (VTC Spring, 2009)

How much information can one get from a wireless ad hoc sensor network over a correlated random field? - Youngchul Sung; H. Vincent Poor; Heejung Yu (IEEE Trans. Inf. Theory, 2009)

Adaptive beam tracking for interference alignment for multiuser time-varying MIMO interference channels. - Heejung Yu; Youngchul Sung; Haksoo Kim; Yong Hoon Lee (ICASSP, 2010)

Least squares approach to joint beam design for interference alignment in multiuser multi-input multi-output interference channels. - Heejung Yu; Youngchul Sung (IEEE Trans. Signal Process., 2010)

Cognitive Beam Design and Transmit Power Control for Cognitive Radio Networks in Time-varying Channels. - Heejung Yu; Sok-Kyu Lee (EW, 2011)

Adaptive beam tracking for interference alignment in time-varying MIMO interference channels: Conjugate gradient approach. - Junse Lee; Heejung Yu; Youngchul Sung; Yong Hoon Lee (ICASSP, 2011)

Multi-user MIMO downlink beamforming based on perturbation theory of generalized eigenvector. - Heejung Yu; Jeong-Chul Shin; Sok-Kyu Lee (ISWCS, 2012)

An Efficient Algorithm for Zero-Forcing Coordinated Beamforming. - Haksoo Kim; Heejung Yu; Youngchul Sung; Yong Hoon Lee (IEEE Commun. Lett., 2012)

A Nonlinear Transceiver Architecture for Overloaded Multiuser MIMO Interference Channels. - Youngseok Oh; Heejung Yu; Yong Hoon Lee; Youngchul Sung (IEEE Trans. Commun., 2012)

Beam Tracking for Interference Alignment in Slowly Fading MIMO Interference Channels: A Perturbations Approach Under a Linear Framework. - Heejung Yu; Youngchul Sung; Haksoo Kim; Yong Hoon Lee (IEEE Trans. Signal Process., 2012)

Optimal Channel Sensing in Cognitive Radio Network with Multiple Secondary Users. - Heejung Yu (GPC, 2013)

Optimal channel sensing maximising sum rate in cognitive radio with multiple secondary links. - Heejung Yu (Trans. Emerg. Telecommun. Technol., 2013)

Cognitive Beamforming and Power Control in Time-Varying Channels: Design and Analysis. - Heejung Yu; Eui-Rim Jeong (IEICE Trans. Commun., 2013)

Optimal Channel Sensing for Heterogeneous Cognitive Networks: An Analytical Approach. - Heejung Yu (KSII Trans. Internet Inf. Syst., 2013)

Comparison of MIMO schemes in IEEE 802.11ac under time-varying channels: analytical approach. - Heejung Yu; Heeyong Lee (ICCE-Berlin, 2014)

Super-allocation and Cluster-based Cooperative Spectrum Sensing in Cognitive Radio Networks. - Md. Sipon Miah; Heejung Yu; Md. Mahbubur Rahman (KSII Trans. Internet Inf. Syst., 2014)

Beam Tracking for Interference Alignment in Time-Varying MIMO Interference Channels: A Conjugate-Gradient-Based Approach. - Junse Lee; Heejung Yu; Youngchul Sung (IEEE Trans. Veh. Technol., 2014)

A Cluster-Based Cooperative Spectrum Sensing in Cognitive Radio Network Using Eigenvalue Detection Technique with Superposition Approach. - Md. Sipon Miah; Heejung Yu; Tapan Kumar Godder; Md. Mahbubur Rahman (Int. J. Distributed Sens. Networks, 2015)

An Analytical Approach to Opportunistic Transmission under Rayleigh Fading Channels. - Yousaf Bin Zikria; Sung Won Kim; Heejung Yu; Seung Yeob Nam (Int. J. Distributed Sens. Networks, 2015)

Limited Feedback for Multicell Zero-Forcing Coordinated Beamforming in Time-Varying Channels. - Haksoo Kim; Heejung Yu; Yong Hoon Lee (IEEE Trans. Veh. Technol., 2015)

A Review on Interference Alignment in Multiuser Interference Channels. - Heejung Yu (Wirel. Pers. Commun., 2015)

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

Efficient Resource Allocation for Proportional Fair Schedulers in Multihop Relay Networks. - Taejoon Kim; Byungkwan Kim; Heejung Yu (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2016)

Optimal primary pilot power allocation and secondary channel sensing in cognitive radios. - Heejung Yu (IET Commun., 2016)

Energy-efficient resource allocation in multi-user AF two-way relay channels. - Seongjin Kim; Heejung Yu (J. Commun. Networks, 2016)

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

Performance analysis of centralised and distributed scheduling schemes for mobile multihop relay systems. - Taejoon Kim; Kwanghoon An; Heejung Yu (IET Commun., 2017)

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

Optimal Resource Planning with Interference Coordination for Relay-Based Cellular Networks. - Taejoon Kim; Kwanghoon An; Heejung Yu (KSII Trans. Internet Inf. Syst., 2017)

A New Cellular Network Structure Deploying Shared Relays with Sectorization. - Sungmin Cho; Youngseok Oh; Heejung Yu; Woongsup Lee (Wirel. Pers. Commun., 2017)

Energy- and Spectral-Efficiency Trade-Off in OFDMA Downlink Channels. - Seongjin Kim; Heejung Yu (Wirel. Pers. Commun., 2017)

Low-Complexity Nonlinearity Post Compensator for Shared Band Transmission in Satellite Communication. - Sooyeob Jung; Joon-Gyu Ryu; Deock-Gil Oh; Heejung Yu (ISWCS, 2018)

A Survey on Resource Management in IoT Operating Systems. - Arslan Musaddiq; Yousaf Bin Zikria; Oliver Hahm; Heejung Yu; Ali Kashif Bashir; Sung Won Kim (IEEE Access, 2018)

A survey on routing protocols supported by the Contiki Internet of things operating system. - Yousaf Bin Zikria; Muhammad Khalil Afzal; Farruh Ishmanov; Sung Won Kim; Heejung Yu (Future Gener. Comput. Syst., 2018)

Internet of Things (IoT): Operating System, Applications and Protocols Design, and Validation Techniques. - Yousaf Bin Zikria; Heejung Yu; Muhammad Khalil Afzal; Mubashir Husain Rehmani; Oliver Hahm (Future Gener. Comput. Syst., 2018)

Resource planning and backhaul-link optimisation for relay networks. - Taejoon Kim; Heejung Yu (IET Commun., 2018)

Multiple Access Control for Cognitive Radio-Based IEEE 802.11ah Networks. - Muhammad Shafiq 002; Maqbool Ahmad; Azeem Irshad; Moneeb Gohar; Muhammad Usman 018; Muhammad Khalil Afzal; Jin-Ghoo Choi; Heejung Yu (Sensors, 2018)

Opportunistic channel selection MAC protocol for cognitive radio ad hoc sensor networks in the internet of things. - Yousaf Bin Zikria; Farruh Ishmanov; Muhammad Khalil Afzal; Sung Won Kim; Seung Yeob Nam; Heejung Yu (Sustain. Comput. Informatics Syst., 2018)

Energy-Efficient HARQ-IR for Massive MIMO Systems. - Seongjin Kim; Heejung Yu (IEEE Trans. Commun., 2018)

Wireless Secure Communication With Beamforming and Jamming in Time-Varying Wiretap Channels. - Heejung Yu; Taejoon Kim; Hamid Jafarkhani (IEEE Trans. Inf. Forensics Secur., 2018)

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

Wireless Backhaul Based on IEEE 802.11ac With Smart Beamforming. - Youngseok Oh; Sungmin Cho; Heejung Yu (IEEE Syst. J., 2019)

Training and Data Structures for AN-Aided Secure Communication. - Heejung Yu; Taejoon Kim (IEEE Syst. J., 2019)

Secrecy Performance Analysis of Mixed Hyper-Gamma and Gamma-Gamma Cooperative Relaying System. - Noor Ahmad Sarker; A. S. M. Badrudduza; S. M. Riazul Islam; Sheikh Habibul Islam; Imran Shafique Ansari; Milton Kumar Kundu; Mst Fateha Samad; Md. Biplob Hossain; Heejung Yu (IEEE Access, 2020)

Tactile Internet: Technologies, test platforms, trials, and applications. - Heejung Yu; Muhammad Khalil Afzal; Yousaf Bin Zikria; Abderrezak Rachedi; Frank H. P. Fitzek (Future Gener. Comput. Syst., 2020)

Optimization of uplink rate and fronthaul compression in cloud radio access networks. - Heejung Yu; Taejoon Kim (Future Gener. Comput. Syst., 2020)

Physical layer security based on NOMA and AJ for MISOSE channels with an untrusted relay. - Heejung Yu; Il-Gu Lee (Future Gener. Comput. Syst., 2020)

Impact of Feature Selection Algorithm on Speech Emotion Recognition Using Deep Convolutional Neural Network. - Misbah Farooq; Fawad Hussain; Naveed Khan Baloch; Fawad Riasat Raja; Heejung Yu; Yousaf Bin Zikria (Sensors, 2020)

Device-to-Device Aided Cooperative Relaying Scheme Exploiting Spatial Modulation: An Interference Free Strategy. - Md. Shahriar Kamal; Md. Fazlul Kader; S. M. Riazul Islam; Heejung Yu (Sensors, 2020)

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

Cognitive Interference Cancellation with Digital Channelizer for Satellite Communication. - Byounghak Kim; Heejung Yu; Song Noh (Sensors, 2020)

Enhanced Sensing and Sum-Rate Analysis in a Cognitive Radio-Based Internet of Things. - Md. Sipon Miah; Kazi Mowdud Ahmed; Md. Khairul Islam; Md. Ashek Raihan Mahmud; Md. Mahbubur Rahman; Heejung Yu (Sensors, 2020)

Fault-Tolerant Network-On-Chip Router Architecture Design for Heterogeneous Computing Systems in the Context of Internet of Things. - Muhammad Rashid; Naveed Khan Baloch; Muhammad Akmal Shafique; Fawad Hussain; Shahroon Saleem; Yousaf Bin Zikria; Heejung Yu (Sensors, 2020)

TrustWalker: An Efficient Trust Assessment in Vehicular Internet of Things (VIoT) with Security Consideration. - Muhammad Sohail 001; Rashid Ali 001; Muhammad Kashif; Sher Ali; Sumet Mehta; Yousaf Bin Zikria; Heejung Yu (Sensors, 2020)

Cognitive Radio Networks for Internet of Things and Wireless Sensor Networks. - Heejung Yu; Yousaf Bin Zikria (Sensors, 2020)

Joint Optimization of Power and Fronthaul Compression for Data and Pilot Signals in Uplink C-RANs. - Heejung Yu; Howon Lee (IEEE Syst. J., 2020)

Training Signal Design for Sparse Channel Estimation in Millimeter-Wave Communication with Intelligent Reflecting Surfaces. - Song Noh; Heejung Yu; Youngchul Sung (ICC Workshops, 2021)

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

Aircraft Classification Based on PCA and Feature Fusion Techniques in Convolutional Neural Network. - Faisal Azam; Akash Rizvi; Wazir Zada Khan; Mohammed Y. Aalsalem; Heejung Yu; Yousaf Bin Zikria (IEEE Access, 2021)

Security at the Physical Layer Over GG Fading and mEGG Turbulence Induced RF-UOWC Mixed System. - A. S. M. Badrudduza; Md. Ibrahim; S. M. Riazul Islam; Md. Shakhawat Hossen; Milton Kumar Kundu; Imran Shafique Ansari; Heejung Yu (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)

Application Mapping Using Cuckoo Search Optimization With Lévy Flight for NoC-Based System. - Muhammad Junaid Mohiz; Naveed Khan Baloch; Fawad Hussain; Sharoon Saleem; Yousaf Bin Zikria; Heejung Yu (IEEE Access, 2021)

Opportunistic Relay in Multicast Channels With Generalized Shadowed Fading Effects: A Physical Layer Security Perspective. - S. M. Saumik Shahriyer; A. S. M. Badrudduza; Sarjana Shabab; Milton Kumar Kundu; Heejung Yu (IEEE Access, 2021)

WiFi HaLow for Long-Range and Low-Power Internet of Things: System on Chip Development and Performance Evaluation. - Il-Gu Lee; Duk-Bai Kim; Jeongki Choi; Hyungu Park; Sok-Kyu Lee; Juphil Cho; Heejung Yu (IEEE Commun. Mag., 2021)

Secure IoT Communications Using HARQ-Based Beamforming for MISOSE Channels. - Heejung Yu; Jingon Joung (IEEE Internet Things J., 2021)

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

An Optimized Nature-Inspired Metaheuristic Algorithm for Application Mapping in 2D-NoC. - Saleha Sikandar; Naveed Khan Baloch; Fawad Hussain; Waqar Amin; Yousaf Bin Zikria; Heejung Yu (Sensors, 2021)

Bandwidth Design for Energy-Efficient Unmanned Aerial Vehicle Using Space-Time Line Code. - Jingon Joung; Heejung Yu; Jian Zhao 013 (IEEE Syst. J., 2021)

Frame Structure Design for Vehicular-to-Roadside Unit Communications Using Space-Time Line Code Under Time-Varying Channels. - Heejung Yu; Jingon Joung (IEEE Syst. J., 2021)

Design of the Power and Dimension of Artificial Noise for Secure Communication Systems. - Heejung Yu; Jingon Joung (IEEE Trans. Commun., 2021)

Optimization of Frame Structure and Fronthaul Compression for Uplink C-RAN Under Time-Varying Channels. - Heejung Yu; Jingon Joung (IEEE Trans. Wirel. Commun., 2021)

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

High-Resolution and Low-Complexity Direction of Arrival Estimation for Hybrid Array of Subarrays. - Song Noh; Jiho Song; Junse Lee; Heejung Yu (IEEE Access, 2022)

Optimal Pilot and Data Power Allocation for Joint Communication-Radar Air-to-Ground Networks. - Ji Min Park; Juphil Cho; Song Noh; Heejung Yu (IEEE Access, 2022)

Multiagent Q-Learning-Based Multi-UAV Wireless Networks for Maximizing Energy Efficiency: Deployment and Power Control Strategy Design. - Seungmin Lee; Heejung Yu; Howon Lee (IEEE Internet Things J., 2022)

Optimal Tethered-UAV Deployment in A2G Communication Networks: Multi-Agent Q-Learning Approach. - Suhyeon Lim; Heejung Yu; Howon Lee (IEEE Internet Things J., 2022)

An efficient and cost effective application mapping for network-on-chip using Andean condor algorithm. - Farrukh Mehmood; Naveed Khan Baloch; Fawad Hussain; Waqar Amin; M. Shamim Hossain; Yousaf Bin Zikria; Heejung Yu (J. Netw. Comput. Appl., 2022)

Design of Channel Estimation for Hybrid Beamforming Millimeter-Wave Systems in the Presence of Beam Squint. - Song Noh; Jaekoo Lee; Heejung Yu; Jiho Song (IEEE Syst. J., 2022)

Training Signal Design for Sparse Channel Estimation in Intelligent Reflecting Surface-Assisted Millimeter-Wave Communication. - Song Noh; Heejung Yu; Youngchul Sung (IEEE Trans. Wirel. Commun., 2022)

Channel Estimation Techniques for RIS-Assisted Communication: Millimeter-Wave and Sub-THz Systems. - Song Noh; Junse Lee; Gilwon Lee; Kyungsik Seo; Youngchul Sung; Heejung Yu (IEEE Veh. Technol. Mag., 2022)

Discrete Phase Shifts of Intelligent Reflecting Surface Systems Considering Network Overhead. - Jaehong Kim 003; Heejung Yu; Xin Kang 001; Jingon Joung (Entropy, 2022)

Optimal Power and Position Control for UAV-assisted JCR Networks: Multi-Agent Q-Learning Approach. - Ji Min Park; Howon Lee; Heejung Yu (CCNC, 2023)

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)

RIS-Aided Mixed RF-FSO Wireless Networks: Secrecy Performance Analysis With Simultaneous Eavesdropping. - Md. Mijanur Rahman; A. S. M. Badrudduza; Noor Ahmad Sarker; Md. Ibrahim; Imran Shafique Ansari; Heejung Yu (IEEE Access, 2023)

A Survey on Dynamic Application Mapping Approaches for Real-Time Network-on-Chip-Based Platforms. - Sharoon Saleem; Fawad Hussain; Waqar Amin; Rehan Ahmed; Yousaf Bin Zikria; Farruh Ishmanov; Heejung Yu (IEEE Access, 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)

A novel subset-based polynomial design for enhancing the security of short message-digest with inflated avalanche and random responses. - P. Karthik; P. Shanthi Bala; Akashdeep Bhardwaj; Salil Bharany; Heejung Yu; Yousaf Bin Zikria (J. King Saud Univ. Comput. Inf. Sci., 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)

Satellite Clustering for Non-Terrestrial Networks: Concept, Architectures, and Applications. - Dong-Hyun Jung; Gyeongrae Im; Joon-Gyu Ryu; Seungkeun Park; Heejung Yu; Junil Choi (IEEE Veh. Technol. Mag., 2023)

Efficient application mapping approach based on grey wolf optimization for network on chip. - Waqar Amin; Fawad Hussain; Sheraz Anjum; Sharoon Saleem; Naveed Khan Baloch; Yousaf Bin Zikria; Heejung Yu (J. Netw. Comput. Appl., 2023)

Integrated single target sensing and multiuser communications based on zero-forcing beamforming. - Jingon Joung; Heejung Yu; Tony Q. S. Quek (Veh. Commun., 2023)

Joint Direct and Indirect Channel Estimation for RIS-Assisted Millimeter-Wave Systems Based on Array Signal Processing. - Song Noh; Kyungsik Seo; Youngchul Sung; David J. Love; Junse Lee; Heejung Yu (IEEE Trans. Wirel. Commun., 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)

HyPE: Online Hybrid Pseudo-Bayesian Estimation Method for S-ALOHA-Based Tactical FANETs. - Jimin Jeon; Junseung Lee; Taewook Kim; Jaeha Ahn; Youngbin Yu; Min Lee; Heejung Yu; Howon Lee (IEEE Access, 2024)

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

Secrecy Performance Analysis of Integrated RF-UWOC IoT Networks Enabled by UAV and Underwater-RIS. - Abrar Bin Sarawar; A. S. M. Badrudduza; Md. Ibrahim; Imran Shafique Ansari; Heejung Yu (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)

Physical-Layer Security in Mixed UOWC-RF Networks With Energy Harvesting Relay Against Multiple Eavesdroppers. - Moloy Kumar Ghosh; Milton Kumar Kundu; Md. Ibrahim; A. S. M. Badrudduza; Md. Shamim Anower; Imran Shafique Ansari; Annie Solomon; Sumit Chakravarty; Imtiaz Ahmed 001; Heejung Yu (IEEE Open J. Commun. Soc., 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)

An intelligent IoT intrusion detection system using HeInit-WGAN and SSO-BNMCNN based multivariate feature analysis. - Jianbin Wu; Sami Ahmed Haider; Heejung Yu; Muhammad Irshad; Mukesh Soni; Mohit Kumar Bhadla; Yousaf Bin Zikria (Eng. Appl. Artif. Intell., 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)

Strategies for Optimizing Uplink Spectrum Efficiency in Cell-Free Massive MIMO Satellite-UAV Network. - Thong Nhat Tran; Heejung Yu; Taejoon Kim (IEEE Internet Things J., 2024)

Performance Improvement of Hybrid Pseudo-Bayesian Approach-Based Random Access in FANETs. - Jimin Jeon; Taewook Kim; Heejung Yu; Howon Lee (CCNC, 2025)

Optimal UAV-Relay Positioning and Transmit Power Allocation in ISAC-Based A2G Networks. - Ji Min Park; Junseok Lee; Heejung Yu (CCNC, 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 Ahmad; Waqas Khalid; Heejung Yu (IEEE Access, 2025)

Joint Resource Allocation and Power Control in Rate-Splitting Multiple Access-Based Integrated Terrestrial and Non-Terrestrial Networks With HAP Assistance. - Thong Nhat Tran; Young Jeon; Heejung Yu; Taejoon Kim (IEEE Access, 2025)

Physical-layer security in MU-MISO downlink networks against potential eavesdroppers. - Woong Son; Minkyu Oh; Heejung Yu; Bang Chul Jung (Digit. Commun. Networks, 2025)

RIS-aided free-space optics communications in A2G networks over inverted Gamma-Gamma turbulent channels. - Md. Abdur Rakib; Md. Ibrahim; A. S. M. Badrudduza; Imran Shafique Ansari; Md. Shahid Uz Zaman; Heejung Yu (ICT Express, 2025)

Sky visibility analysis under urban networks: A stochastic geometry approach. - Heejung Yu; Sooyeob Jung; Joon-Gyu Ryu; Junse Lee (ICT Express, 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)

Secrecy Performance Analysis of Integrated RF-UOWC IoT Networks Enabled by UAV and Underwater RIS. - Abrar Bin Sarawar; A. S. M. Badrudduza; Md. Ibrahim; Imran Shafique Ansari; Heejung Yu (IEEE Internet Things J., 2025)

D3QN-Based IAB Resource Allocation and Tethered UAV Positioning for IoT Networks. - Yerin Lee; Heejung Yu; Howon Lee; Mohamed-Slim Alouini (IEEE Trans. Intell. Transp. Syst., 2025)

O-RAN-Based NTN Architecture: Open NTN Concept and Optimization of Power Allocation and Fronthaul Compression. - Junseok Lee; Hee Wook Kim; Joon-Gyu Ryu; Yousaf Bin Zikria; Bang Chul Jung; Heejung Yu (IEEE Trans. Aerosp. Electron. Syst., 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)