SDR System Design and Implementation on Delay-Doppler Communications and Sensing

Wei，Xinyuan1; Zhang，Lingyan1; Yuan，Weijie1; Liu，Fan1; Li，Shuangyang2; Wei，Zhiqiang3

10.1109/WCNC55385.2023.10118889

2023

1525-3511

978-1-6654-9123-5

IEEE Wireless Communications and Networking Conference, WCNC

2023-March

1-6

26-29 March 2023

Glasgow, United Kingdom

Orthogonal time frequency space (OTFS) modulation has shown promising application perspectives, thanks to its strong delay and Doppler resilience. Furthermore, the delay-Doppler domain channel response directly reflects the physical attributes of channel scatterers, which provides fundamentally new perspectives for channel estimation (CE) and radar sensing. The success of OTFS has stimulated various CE and equalization algorithms with promising performance. However, only few of them were validated by hardware experiments. In this paper, we develop an OTFS communication and sensing (C&S) system using software defined radio (SDR), which invokes the off-grid target sensing and minimum mean square error (MMSE) channel equalization. In particular, we design and emulate the high-mobility wireless channel with multiple scatterers (sensing targets) and conduct the channel equalization with MMSE for data detection. Moreover, we study the influence of transceiver impairments, such as in-phase and quadrature (IQ) imbalance, DC offset, and carrier frequency offsets (CFO). With real-time experiments, the results show that the addition of scatterers engenders the distortion of the DD domain signals which curtail the BER performance of the communication system and further trims the MSE of sensing parameters with the increasing number of scatterers.

Communications and sensing delay-Doppler domain OTFS software defined radio

第一 ; 通讯

英语

CPCI-S ; EI

WOS:000989491900247

20232114140302

Analog circuits ; C (programming language) ; Equalizers ; Frequency allocation ; Radio ; Radio transceivers ; Software radio

Electronic Circuits:713 ; Electronic Circuits Other Than Amplifiers, Oscillators, Modulators, Limiters, Discriminators or Mixers:713.5 ; Radio Systems and Equipment:716.3 ; Television Systems and Equipment:716.4 ; Computer Programming Languages:723.1.1 ; Mathematical Statistics:922.2

2-s2.0-85159786371

Scopus

1.Southern University of Science and Technology,School of Electronic and Electrical Engineering,Shenzhen,China
2.The University of Western Australia,Department of Electrical,Electronic,and Computer Engineering,Perth,Australia
3.Xi'An Jiaotong University,School of Mathematics and Statistics,Xi'an,China

Wei，Xinyuan,Zhang，Lingyan,Yuan，Weijie,et al. SDR System Design and Implementation on Delay-Doppler Communications and Sensing[C],2023:1-6.