Revealing the Impact of SIC in NOMA-ISAC

被引：17
|
作者：
Ouyang, Chongjun [1 ]
Liu, Yuanwei [2 ]
Yang, Hongwen [1 ]
机构：
[1] Beijing Univ Posts & Telecommun, Sch Informat & Commun Engn, Beijing 100876, Peoples R China
[2] Queen Mary Univ London, Sch Elect Engn & Comp Sci, London E1 4NS, England
来源：
IEEE WIRELESS COMMUNICATIONS LETTERS | 2023年 / 12卷 / 10期
关键词：
Integrated sensing and communications; performance analysis; successive interference cancellation; PERFORMANCE; RADAR;
D O I：
10.1109/LWC.2023.3288633
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
The impact of successive interference cancellation (SIC) in non-orthogonal multiple access integrated sensing and communications (NOMA-ISAC) is analyzed. A two-stage SIC-based framework is proposed to deal with the inter-communication user and inter-functionality interferences. The performance of sensing and communications (S&C) is analyzed for two SIC orders, i.e., the communications-centric SIC and the sensing-centric SIC. For each design, diversity orders, high signal-to-noise ratio (SNR) slopes, and high-SNR power offsets of the sensing rate (SR) and communication rate (CR) are derived as insights. Analytical results indicate that i) the main influence of SIC order on the SR and CR lies in the high-SNR power offsets; ii) ISAC provides more degrees of freedom than frequency-division S&C (FDSAC). Numerical results show that the SR-CR region of ISAC entirely covers that of FDSAC.
引用
收藏
页码：1707 / 1711
页数：5
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