4 citations · 7 across the 20 of their papers we have counts for
22 papers
Reconfigurable Intelligent Surfaces for Cognitive Radio Networks: Design, Optimization, and Emerging Trends
Diluka Galappaththige, Chintha Tellambura, Ranga Kulathunga +1
Reconfigurable intelligent surfaces (RISs) enable programmable wireless propagation environments, offering new opportunities for cognitive radio networks (CRNs) to improve spectrum…
Cell-Free Integrated Sensing and Communication
Diluka Galappaththige, Chintha Tellambura
Cell-free (CF) integrated sensing and communication (ISAC) merges the CF architecture with ISAC functionalities. CF-ISAC leverages distributed access points, removes cell boundarie…
Set Transformer-Based Beamforming Design for Cell-Free Integrated Sensing and Communication
Ranga Kulathunga, Diluka Galappaththige, Gayan Aruma Baduge +1
Existing cell-free integrated sensing and communication (CF-ISAC) beamforming algorithms predominantly rely on classical optimization techniques, which often entail high computatio…
Backscatter-Assisted High-Speed Rail Communications in Straight Tunnel Environments: Effects of Tag Number and Phase Control
Yunping Mu, Gongpu Wang, Ruisi He +3
Backscatter communication is a promising technology to enhance the signal strength received by the receiver in straight tunnel environments. The impact of the number of tags and th…
Hybrid Beamfocusing Design for RSMA-Enabled Near-Field Wideband Communications
Jiasi Zhou, Chintha Tellambura
Future wireless networks will utilize extremely large-scale antenna arrays (ELAAs) over high-frequency bands, which, however, produce near-field spherical wavefronts and spatial wi…
Hybrid Beamfocusing Design for RSMA-Enhanced Near-Field Secure Communications
Jiasi Zhou, Huiyun Xia, Chuan Wu +1
Near-field spherical wavefronts enable spotlight-like beam focusing to mitigate unintended energy leakage, creating new opportunities for physical-layer security (PLS). However, un…
Rate-Splitting Multiple Access for Secure Near-Field Integrated Sensing and Communication
Jiasi Zhou, Chintha Tellambura, Geoffrey Ye Li
Near-field integrated sensing and communication (ISAC) leverages distance-dependent channel variations for joint distance and angle estimation. However, full-digital architectures…
RIS- and Multi-Snapshot-Enabled SISO 3D Position and Velocity Estimation With Single Base Station
Yirun Wang, Yongqing Wang, Yuyao Shen +2
Reconfigurable intelligent surface (RIS) panels can act as cost-effective anchors for radio localization, complementing conventional base station (BS) anchors. This paper investiga…
Sub-Connected Hybrid Beamfocusing Design for RSMA-Enabled Near-Field Communications with Imperfect CSI and SIC
Jiasi Zhou, Ruirui Chen, Yanjing Sun +1
Near-field spherical waves inherently encode both direction and distance information, enabling spotlight-like beam focusing for targeted interference mitigation. However, whether s…
Revolutionizing Medical Data Transmission with IoMT: A Comprehensive Survey of Wireless Communication Solutions and Future Directions
Jiasi Zhou, Yanjing Sun, Chintha Tellambura
Traditional hospital-based medical examination methods face unprecedented challenges due to the aging global population. The Internet of Medical Things (IoMT), an advanced extensio…
Wideband Cognitive Radio for Joint Communication and Sensing: Optimization of Subcarrier Allocation and beamforming
Diluka Galappaththige, Chintha Tellambura
As data traffic grows, wireless systems shift to higher frequency bands (6 GHz and above), where radar systems also operate. This coexistence demands effective interference managem…
CRB-Rate Tradeoff in RSMA-enabled Near-Field Integrated Multi-Target Sensing and Multi-User Communications
Jiasi Zhou, Cong Zhou, Yanjing Sun +1
Extremely large-scale antenna arrays enhance spectral efficiency and spatial resolution in integrated sensing and communication (ISAC) networks while expanding the Rayleigh distanc…
Cell-Free Integrated Sensing and Communication: Principles, Advances, and Future Directions
Diluka Galappaththige, Mohammadali Mohammadi, Gayan Aruma Baduge +1
Cell-free (CF) integrated sensing and communication (ISAC) combines CF architecture with ISAC. CF employs distributed access points, eliminates cell boundaries, and enhances covera…
Low-Complexity Multi-Target Detection in ELAA ISAC
Diluka Galappaththige, Shayan Zargari, Chintha Tellambura +1
Multi-target detection and communication with extremely large-scale antenna arrays (ELAAs) operating at high frequencies necessitate generating multiple beams. However, conventiona…
Cell-Free Full-Duplex Communication -- An Overview
Diluka Galappaththige, Mohammadali Mohammadi, Hien Quoc Ngo +2
Cell-free (CF) architecture and full-duplex (FD) communication are leading candidates for next-generation wireless networks. The CF framework removes cell boundaries in traditional…
Hybrid Beamforming Design for RSMA-enabled Near-Field Integrated Sensing and Communications
Jiasi Zhou, Chintha Tellambura, Geoffrey Ye Li
Integrated sensing and communication (ISAC) networks leverage extremely large antenna arrays and high frequencies. This inevitably extends the Rayleigh distance, making near-field…
Flexible Rate-Splitting Multiple Access for Near-Field Integrated Sensing and Communications
Jiasi Zhou, Cong Zhou, Cheng Zeng +1
This letter presents a flexible rate-splitting multiple access (RSMA) framework for near-field (NF) integrated sensing and communications (ISAC). The spatial beams configured to me…
Joint Beam Scheduling and Resource Allocation for Flexible RSMA-aided Near-Field Communications
Jiasi Zhou, Cong Zhou, Yijie Mao +1
Supporting immense throughput and ubiquitous connectivity holds paramount importance for future wireless networks. To this end, this letter focuses on how the spatial beams configu…
Structured Tensor Decomposition Based Channel Estimation and Double Refinements for Active RIS Empowered Broadband Systems
Yirun Wang, Yongqing Wang, Yuyao Shen +2
Channel parameter recovery is critical for the next-generation reconfigurable intelligent surface (RIS)-empowered communications and sensing. Tensor-based mechanisms are particular…
Downlink Beamforming for Cell-Free ISAC: A Fast Complex Oblique Manifold Approach
Shayan Zargari, Diluka Galappaththige, Chintha Tellambura +1
Cell-free integrated sensing and communication (CF-ISAC) systems are just emerging as an interesting technique for future communications. Such a system comprises several multiple-a…
Joint Uplink and Downlink Rate Splitting for Fog Computing-Enabled Internet of Medical Things
Jiasi Zhou, Yan Chen, Cong Zhou +1
The Internet of Medical Things (IoMT) facilitates in-home electronic healthcare, transforming traditional hospital-based medical examination approaches. This paper proposes a novel…
Improved Energy-Based Signal Detection for Ambient Backscatter Communications
S. Zargari, C. Tellambura, A. Maaref
In ambient backscatter communication (AmBC) systems, passive tags connect to a reader by reflecting an ambient radio frequency (RF) signal. However, the reader may not know the cha…