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对已有的传统译码算法如迫零算法(ZF)、最小均方(MMSE)算法、连续抵消(SIC)算法等的性能进行了研究,并在此基础上提出将迫零算法与连续抵消算法、最小均方算法与连续抵消算法相结合,构成迫零-连续抵消算法(ZF-SIC)与最小均方-连续抵消算法(MMSE-SIC),从而明显改善系统的误码性能。此外,对收发两端采用不同天线数时的系统误码性能进行了仿真与分析,同时仿真分析了系统采用QPSK与16QAM调制方式的误码性能,最后给出仿真分析结果。
The performance of the existing traditional decoding algorithms such as Zero Forcing Algorithm (ZF), Minimum Mean-Squares (MMSE) algorithm and Continuous Offset (SIC) algorithm are studied. Based on this, the zero-forcing algorithm and continuous cancellation Algorithm, the least mean square algorithm and the continuous offset algorithm combine to form the zero-forcing-continuous cancellation algorithm (ZF-SIC) and the minimum mean square-continuous cancellation algorithm (MMSE-SIC), thereby significantly improving the system’s error performance. In addition, the simulation and analysis of system error performance when using different antenna numbers at both ends of sending and receiving system are carried out. At the same time, the error performance of QPSK and 16QAM modulation system is simulated and analyzed. At last, simulation results are given.