大规模MIMO-TRDMA系统中的改进SOR信号检测算法

doi:10.11959/j.issn.1000-436x.2021205

Abstract

Abstract:

In the massive multi-input multi-output time-reversal division multiple access (MIMO-TRDMA) systems, the traditional linear minimum mean square error (MMSE) algorithm achieved approximately the best performance.However, the matrix inversion of the MMSE algorithm was too complicated to ensure real-time processing of signal detection.To solve this problem, an improved successive over-relaxation (SOR) signal detection optimization algorithm was proposed.The proposed algorithm reasonably upgraded the solution of linear equations to prevent the complicated calculation of matrix inversion.Meanwhile, the steepest descent idea was used to provide an effective search direction for the SOR signal detection algorithm, achieving a rapid convergence rate and stronger inspection performance.The simulation results show that the proposed algorithm has the similar best performance with fewer update times compared with the traditional MMSE algorithm, and the calculation complexity is reduced from O(M³)to O(²).

Key words: massive MIMO, TRDMA, SOR algorithm, SD algorithm

CLC Number:

TN92

Mingyue WANG, Fangwei LI, Xiaorong JING, Haibo ZHANG, Junzhou XIONG. Improved SOR signal detection algorithm in massive MIMO-TRDMA systems[J]. Journal on Communications, 2021, 42(10): 153-161.

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更新次数	改进SOR算法	SOR算法
k= 3	16M ²+18M	12M ²+12M
k= 4	20M ²+22M	16M ²+16M
k= 5	24M ²+26M	20M ²+20M

Improved SOR signal detection algorithm in massive MIMO-TRDMA systems

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