Low Complexity Multiuser Detection Algorithm for Multi-Beam Satellite Systems  

作　　者：Yang Wang Danfeng Zhao Xi Liao 

机构地区：[1]College of Information and Communication Engineering,Harbin Engineering University

出　　处：《Journal of Harbin Institute of Technology(New Series)》2015年第5期105-109,共5页哈尔滨工业大学学报（英文版）

基　　金：Sponsored by the China Postdoctoral Science Foundation(Grant No.2011M500640)

摘　　要：The minimum mean square error-successive interference cancellation( MMSE-SIC) multiuser detection algorithm has high complexity and long processing latency. A multiuser detection algorithm is proposed for multi-beam satellite systems in order to decrease the complexity and latency. The spot beams are grouped base on the distance between them in the proposed algorithm. Some groups are detected in parallel after a crucial group-wise interference cancellation. Furthermore, the multi-stage structure is introduced to improve the performance. Simulation results show that the proposed algorithm can achieve better performance with less complexity compared with the existing group detection algorithm. Moreover,the proposed algorithm using one stage can reduce the complexity over the fast MMSE-SIC and existing group detection algorithm by 9% and20. 9%. The processing latency is reduced significantly compared with the MMSE-SIC.The minimum mean square error-successive interference cancellation（ MMSE-SIC） multiuser detection algorithm has high complexity and long processing latency. A multiuser detection algorithm is proposed for multi-beam satellite systems in order to decrease the complexity and latency. The spot beams are grouped base on the distance between them in the proposed algorithm. Some groups are detected in parallel after a crucial group-wise interference cancellation. Furthermore, the multi-stage structure is introduced to improve the performance. Simulation results show that the proposed algorithm can achieve better performance with less complexity compared with the existing group detection algorithm. Moreover,the proposed algorithm using one stage can reduce the complexity over the fast MMSE-SIC and existing group detection algorithm by 9% and20. 9%. The processing latency is reduced significantly compared with the MMSE-SIC.

关 键 词：satellite COMMUNICATIONS MULTI-BEAM SATELLITES MULTIUSER detection COMPLEXITY 

分 类 号：TN927.2[电子电信—通信与信息系统]