Journal of Terahertz Science and Electronic Information Technology , Volume. 19, Issue 5, 831(2021)
Performance evaluation of decoding algorithms for DTMB-based passive radar
Low-Density Parity-Check code(LDPC) decoding is one of the key steps in reference signal reconstruction of passive radar. Decoding algorithms can improve data bit errors caused by noise, but with the high complexity. Combining high memory throughput and tremendous computational horsepower of GPU graphics processor, this paper proposes three types of parallel LDPC decoding algorithms suitable for GPU processing based on hard, mixed, and soft decisions. The complexity, decoding performance, and impact on radar signal processing of the three types of algorithms are described; finally, a parallel GPU implementation scheme is given, and the real-time time-consuming of the algorithms is compared. The simulation and measured results verify that the soft decision parallel algorithm is superior to other algorithms on performance and effectiveness.
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ZHANG Jingsong, WAN Xianrong, ZHANG Xun, RAO Yunhua. Performance evaluation of decoding algorithms for DTMB-based passive radar[J]. Journal of Terahertz Science and Electronic Information Technology , 2021, 19(5): 831
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Received: Mar. 18, 2020
Accepted: --
Published Online: Nov. 15, 2021
The Author Email: Xianrong WAN (xrwan@whu.edu.cn)