Systems Engineering and Electronics ›› 2021, Vol. 43 ›› Issue (2): 567-573.doi: 10.12305/j.issn.1001-506X.2021.02.32

• Communications and Networks • Previous Articles     Next Articles

Conjugate gradient detection algorithm based on Barzilai-Borwein in time reversal system

Jingwen LIANG(), Jiang ZHU()   

  1. School of Communication and Information Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
  • Received:2020-01-16 Online:2021-02-01 Published:2021-03-16

Abstract:

Aiming at the problem of multi-user interference caused by channel correlation in the time inversion multiple-access system, in order to reduce the inter-user interference and the algorithm complexity, a conjugate gradient iterative detection algorithm based on Barzilai-Borwein is proposed. Firstly, the fastest descent direction is found by two iterations of conjugate gradient. And then, the iteration is continued by Barzilai-Borwein along the direction of conjugate gradient search. Simulation results show that the convergence speed of the proposed algorithm is faster than that of Barzilai-Borwein and conjugate gradient algorithm, and the complexity is lower than that of the conjugate gradient algorithm and the minimum mean square error (MMSE) algorithm, which is maintained at O(N2).

Key words: time reversal division multiple access, Barzilai-Borwein iterative algorithm, signal detection, low complexity

CLC Number: 

[an error occurred while processing this directive]