基于GPU的卫星通信基带处理高吞吐率并行算法  

High-throughput parallel baseband processing algorithms based on GPUs for satellite communication

作　　者：李荣春 周鑫 王庆林 梅松竹 LI Rong-chun;ZHOU Xin;WANG Qing-lin;MEI Song-zhu(National Key Laboratory for Parallel and Distributed Processing,College of Computer Science and Technology,National University of Defense Technology,Changsha 410073,China)

机构地区：[1]国防科技大学计算机学院并行与分布处理国防重点实验室,湖南长沙410073

出　　处：《计算机工程与科学》2023年第10期1720-1730,共11页Computer Engineering & Science

基　　金：国家自然科学基金(62002365)。

摘　　要：卫星通信被广泛应用于加密通信、应急通信等领域中,其基带处理算法较为复杂,需要很强的算力支持。传统的FPGA和DSP等平台开发周期过长,基于GPU的软件无线电方案开发便捷,性能优越。提出了一种基于GPU的卫星通信基带算法群,实现了卫星通信下行链路的高速处理。实验结果表明,基于GPU的卫星通信链路达到了最低延迟要求,基带最高处理速度达到978 Mbps。Satellite communication is widely used in fields such as encrypted communication and emergency communication.Its baseband processing algorithm is relatively complex and requires strong computing power support.Traditional FPGA and DSP platforms have a long development cycle,while GPU-based software-defined radio(SDR)solutions are convenient and have excellent performance.This paper proposes a group of baseband algorithms for satellite communication based on GPU,which realizes high-speed processing of the satellite communication downlink.Experimental results show that the GPU-based satellite communication link meets the lowest latency requirements,and the maximum baseband processing speed reaches 978Mbps.

关 键 词：5G 卫星通信 LDPC VITERBI RS 

分 类 号：TN95[电子电信—信号与信息处理]