Hybrid NOMA Empowered Integrated Sensing and Communications

Na Xue, Xidong Mu, Yuanwei Liu, Yue Liu, Yue Chen

研究成果: Conference contribution同行評審

摘要

A novel concept of hybrid non-orthogonal multiple access (HNOMA) empowered integrated sensing and communications (ISAC) is proposed, where the additional sensing-to-communication (S2C) interference can be mitigated via successive interference cancellation (SIC) in an adaptive manner. A transmit power minimization problem is formulated to jointly optimize the beamforming vectors and SIC options, subject to the dual functionality requirements. To address this non-convex mixed integer problem, we first investigate the ideal case where the additional S2C interference can be unconditionally eliminated. It reveals that the required number of dedicated sensing beams is no more than one. By exploring this insight, we propose a hybrid-NOMA ISAC (HNOMA-ISAC) scheme, where the binary SIC option of each CU is determined via the optimal solution of the ideal case. The remaining beamforming design problem is solved via semidefinite relaxation (SDR). Simulation results reveal that the proposed HNOMA-ISAC scheme achieves the identical sensing performance as the conventional ISAC scheme while maintaining much lower transmission energy consumption.

原文English
主出版物標題2023 IEEE International Conference on Communications Workshops
主出版物子標題Sustainable Communications for Renaissance, ICC Workshops 2023
發行者Institute of Electrical and Electronics Engineers Inc.
頁面1648-1653
頁數6
ISBN(電子)9798350333077
DOIs
出版狀態Published - 2023
事件2023 IEEE International Conference on Communications Workshops, ICC Workshops 2023 - Rome, Italy
持續時間: 28 5月 20231 6月 2023

出版系列

名字2023 IEEE International Conference on Communications Workshops: Sustainable Communications for Renaissance, ICC Workshops 2023

Conference

Conference2023 IEEE International Conference on Communications Workshops, ICC Workshops 2023
國家/地區Italy
城市Rome
期間28/05/231/06/23

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