1. Joint resource allocation and user association for multi-cell integrated sensing and communication systems.
- Author
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Zhang, Jiahui, Fei, Zesong, Wang, Xinyi, Liu, Peng, Huang, Jingxuan, and Zheng, Zhong
- Subjects
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TELECOMMUNICATION systems , *ORTHOGONAL frequency division multiplexing , *RESOURCE allocation , *GEOMETRIC programming , *FEMTOCELLS , *POWER transmission - Abstract
The densification of the orthogonal frequency division multiplexing (OFDM) based fifth-generation communication systems, as well as the requirement of integrating sensing and communication functionalities, has promoted the development of integrated-sensing-and-communication (ISAC) dense cellular networks (DCNs). In the OFDM-based ISAC-DCN, multiple base stations simultaneously serve mobile users and sense targets based on the echo of downlink communication signals. In this paper, we establish the interference model in ISAC-DCN for sensing and communication. Focusing on the interference management of the ISAC-DCN, we investigate the multi-dimension resource allocation problem. In particular, we aim to maximize the network utility by jointly optimizing sub-band allocation, user association, and transmission power under the sensing signal-to-interference-plus-noise ratio constraint to be solved iteratively. The mixed-integer optimization problem is decoupled into three sub-problems. Specifically, a greedy genetic sub-band allocation scheme is proposed for sub-band allocation to reduce total interference. We employ the successive convex approximation technique to transform the transmission power control sub-problem and solve it via geometric programming. Simulation results illustrate the trade-off between sensing and communication performances, and show that the proposed algorithm significantly improves the network utility and achieves higher detection probability. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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