In order to solve the problem that the signal detection complexity is too high in generalized spa-tial modulation( GSM) system,this paper proposes a low complexity detection algorithm based on phase de-cision. Firstly,transmit antenna combinations are sorted according to an ordering criterion,then the symbol vector for each ordered transmit antenna combination is detected by zero forcing( ZF) equalization based on phase decision,and finally the constellation modulation symbols and the active transmit antenna combina-tion are obtained. The analysis and simulation results show that the proposed algorithm can effectively re-duce the searching scope for receiver and provide similar bit error rate ( BER ) performance to maximum likelihood( ML) detection algorithm with 98％ reduction in computational complexity.%针对广义空间调制(GSM)系统中信号检测复杂度过高的问题,提出了一种基于相位判决的低复杂度检测算法.首先根据一种排序准则对天线组合进行排序,然后将排序后的天线组合中的符号向量依次通过基于相位判决的迫零(ZF)均衡器进行检测,最终得到星座调制符号和激活天线组合.分析和仿真结果表明,该检测算法可以有效缩小接收端的搜索范围,在提供与最大似然(ML)检测算法相近的误比特率(BER)性能的同时,计算复杂度降低了98％.
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