Robust Beamforming Design for NOMA Enabled Coordinated Multi-Cell ISAC Systems
Xu Q. Gao Y. Zhang Z. Sun W.-B. Wang L. Turlykozhayeva D.
2025Institute of Electrical and Electronics Engineers Inc.
IEEE Communications Letters
2025#29Issue 112736 - 2740 pp.
Integrated sensing and communication (ISAC), which can share spectrum and reduce hardware costs, is considered as a promising technique for future 6G networks. However, ISAC faces challenges in practical scenarios, including massive connections, inter-cell interference, and target angle uncertainty. To address the above issue, this letter investigates a multi-cell ISAC system enabled by non-orthogonal multiple access (NOMA), where the angle of the sensing target is uncertain. A robust transmit and receive beamforming design problem is formulated which maximizes the communication users’ sum rate while satisfying the sensing demand and power constraints simultaneously. The alternating optimization (AO) algorithm is adopted to solve the original optimization problem. Numerical results are provided to demonstrate the effectiveness and superiority of the proposed scheme over the baseline multiple access schemes.
Integrated sensing and communication , non-orthogonal multiple access , optimization , robust beamforming , target uncertainty
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Northwestern Polytechnical University, School of Electronics and Information, National Key Laboratory of Unmanned Aerial Vehicle Technology, Xi’an, 710072, China
Al-Farabi Kazakh National University, Department of Electronics and Astrophysics, Almaty, 050040, Kazakhstan
Northwestern Polytechnical University
Al-Farabi Kazakh National University
10 лет помогаем публиковать статьи Международный издатель
Книга Публикация научной статьи Волощук 2026 Book Publication of a scientific article 2026