On OTFS and OFDM Radar Signal Design Based on the Ambiguity Function Analysis

被引：0
|
作者：
Wang, Bowen [1 ]
Luo, Wenqi [2 ]
Zhu, Jianchi [1 ]
She, Xiaoming [1 ]
Chen, Peng [1 ]
机构：
[1] China Telecom Res Inst, Res Ctr 6G, Beijing 102209, Peoples R China
[2] Beijing Univ Posts & Telecommun, Beijing 100876, Peoples R China
来源：
2023 IEEE 98TH VEHICULAR TECHNOLOGY CONFERENCE, VTC2023-FALL | 2023年
关键词：
ISAC; OFDM; OTFS; Ambiguity function; Zaddoff-Chu sequence; Gold sequence; WAVE-FORM DESIGN; JOINT RADAR;
D O I：
10.1109/VTC2023-Fall60731.2023.10333408
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
Wireless communication enabled integrated sensing and communication (ISAC) attracts growing interest recently. This paper investigates the sensing ability of OFDM and OTFS signals. We derive the expression of their ambiguity functions, and show that the ambiguity surface can be shaped by the information carried. To this end, we then develop a Zak-transform based ambiguity function synthesis method and deduce the corresponding information sequence in the l(2)-norm case. Finally, we present the ambiguity surface of it, and compare it with the Zaddoff-Chu and gold sequences that are widely used in LTE and NR systems. Simulations validate the dependency of sensing performance on the designed sequence and the size of the time-frequency resource.
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页数：5
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