Complementary Coded Scrambling RadCom System - An Integrated Radar and Communication Design in Multi-User-Multi-Target Scenarios

Radar, serving as a sensing technology, is anticipated to be integrated into the sixth-generation (6G) mobile communication system to facilitate high-precision sensing functions, potentially inciting spectrum competition between radar and wireless communication systems. To address this challenge, th...

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Bibliographic Details
Published in:IEEE transactions on vehicular technology 2024-01, Vol.73 (1), p.1-16
Main Authors: Liu, Xiqing, Zhao, Linglan, Liu, Wenjing, Guo, Jichong, Yang, Yiran, Liu, Yujun, Peng, Mugen
Format: Article
Language:English
Subjects:
Codes
Communication
Complementary code
Data rate
Mobile communication systems
Radar
Radar antennas
Radar data
Radar equipment
Radar estimation rate
Radar signal processing
Receiving antennas
Scrambling
Scrambling (communication)
Sensors
Spread spectrum
Transmitting antennas
Wireless communication systems
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Summary:Radar, serving as a sensing technology, is anticipated to be integrated into the sixth-generation (6G) mobile communication system to facilitate high-precision sensing functions, potentially inciting spectrum competition between radar and wireless communication systems. To address this challenge, this study explores a code domain method for mitigating mutual interference caused by spectrum sharing between communication and radar systems. Particularly, this work designs a three-dimensional complementary scrambling code together with the transceiver structure that can simultaneously support communication and radar in a multi-user-multi-target scenario. The complementary scrambling code exhibits ideal correlation properties in both synchronous and asynchronous channels, seamlessly incorporating the time-frequency-space domain. The proposed scheme, referred to as the complementary coded scrambling radar and communication (CCS-RadCom) system, exhibits considerably higher spectral efficiency than that of the spread spectrum-based system due to the fact that it employs scrambling modulation to achieve processing gain. Additionally, this study conducts a joint evaluation of data rates and radar estimate rates. Simulation results indicate that the proposed system successfully achieves improved performance in terms of radar estimation rate and data rate.
ISSN:0018-9545
1939-9359
DOI:10.1109/TVT.2023.3301030