The Improvement of Complex Sphere Decoding Algorithm in the MIMO System
Dacheng Yang · Hainan Daxue xuebao. Ziran kexue ban · 2008
Multiple-Input-Multiple-Output(MIMO) system has the obvious advantage in channel capacity and band efficiency.However,the traditional ML decoding algorithm cannot be applied because of large signal space.The paper introduces Sphere decoding algorithm(SD) to reach the ML performance in the cost of less computation.The paper focuses on complex sphere decoding algorithm(complex SD) and compares it with the real sphere decoding algorithm.A simplified method in complex SD is presented in this paper.It can be shown that the complex SD algorithm greatly reduces the search dimension and has wider application.The new simplified method would reduce the computation and make complex SD more feasible.