Telecommunications Science ›› 2019, Vol. 35 ›› Issue (11): 51-57.doi: 10.11959/j.issn.1000-0801.2019278

• research and development • Previous Articles     Next Articles

Newton iteration and SOR iteration based WWSE precoding algorithm in massive MIMO systems

Wensheng SUN,Junjie XU   

  1. Telecommunication Engineering School,Hangzhou Dianzi University,Hangzhou 310018,China
  • Revised:2019-11-10 Online:2019-11-01 Published:2019-12-23


In massive MIMO system,Newton iteration algorithm was applied to the traditional minimum mean-square error (WWSE) precoding algorithm to calculate the inverse operation,but the initial value of iteration was complicated.Aiming at this problem,WWSESOR-NT algorithm was proposed.The intermediate algorithm based on the SOR iterative algorithm was proposed.Then combined with Newton iteration algorithm,the intermediate algorithm was used to directly estimate the inverse of higher-order matrix,and the result was taken as the initial value of Newton iteration algorithm to accelerate the convergence speed.The simulation results show that WWSESOR-NT algorithm can approximate the performance of WWSE algorithm with fewer iterations and approximately the same complexity.

Key words: massive MIMO, MMSE precoding, SOR iteration, Newton iteration

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