Radar Sensing via OTFS Signaling: A Delay Doppler Signal Processing Perspective

Kecheng Zhang1; Weijie Yuan1; Shuangyang Li2; Fan Liu1; Feifei Gao3; Pingzhi Fan4; Yunlong Cai5

10.1109/ICC45041.2023.10279816

2023-05-28

1938-1883

978-1-5386-7463-5

ICC 2023 - IEEE International Conference on Communications

2023-May

6429-6434

28 May-1 June 2023

Rome, Italy

The recently proposed orthogonal time frequency space (OTFS) modulation multiplexes data symbols in the delay-Doppler (DD) domain. Since the range and velocity, which can be derived from the delay and Doppler shifts, are the parameters of interest for radar sensing, it is natural to consider implementing DD signal processing for radar sensing. In this paper, we investigate the potential connections between the OTFS and DD domain radar signal processing. Our analysis shows that the range-Doppler matrix computing process in radar sensing is exactly the demodulation of OTFS with a rectangular pulse shaping filter. Furthermore, we propose a two-dimensional (2D) correlation-based algorithm to estimate the fractional delay and Doppler parameters for radar sensing. Simulation results show that the proposed algorithm can efficiently obtain the delay and Doppler shifts associated with multiple targets.

OTFS delay-Doppler (DD) domain Radar sensing Fractional delay and Doppler

第一

EI

20234815115338

Pulse shaping ; Radar signal processing

Pulse Circuits:713.4 ; Information Theory and Signal Processing:716.1 ; Radar Systems and Equipment:716.2

IEEE

1.Department of Electronic and Electrical Engineering, Southern University of Science and Technology, Shenzhen, China
2.Department of Electrical, Electronic, and Computer Engineering, University of Western Australia, Perth, WA, Australia
3.Department of Automation, Tsinghua University, Beijing, China
4.Information Coding Transmission Key Lab of Sichuan Province, CSNMT Int. Coop. Res. Centre (MoST), Southwest Jiaotong University, Chengdu, Sichuan, China
5.College of Information Science and Electronic Engineering, Zhejiang University, Hangzhou, China

Kecheng Zhang,Weijie Yuan,Shuangyang Li,et al. Radar Sensing via OTFS Signaling: A Delay Doppler Signal Processing Perspective[C],2023:6429-6434.