MIMO场景下最小误差检测  

作　　者：许天一 邹辉[1] 

机构地区：[1]南京邮电大学波特兰学院,南京210023

出　　处：《科技创新与应用》2025年第6期43-47,共5页Technology Innovation and Application

摘　　要：该文研究多输入多输出(Multiple-Input Multiple-Output,MIMO)场景下的最小均方误差(MMSE)检测方法,旨在提升无线通信系统中的信号检测性能。通过仿真实验,在不同收发天线配置、发射功率和发送符号数量下,对正交相移键控(QPSK)和正交幅度调制(16QAM)进行性能分析。结果表明,随着信噪比的增加,误码率逐渐降低;增加天线数量可以降低误码率,但需要平衡硬件复杂度与性能。在相同信噪比下,QPSK的误码率低于16QAM,且MMSE-ML联合检测方法优于单独的MMSE检测方法。该研究可为优化MIMO系统中的信号检测方法提供新的视角和参考。This paper investigates the minimum mean square error(MMSE)detection method in Multiple-Input Multiple-Output(MIMO)scenarios,aiming to enhance signal detection performance in wireless communication systems.Through simulation experiments,the performance of Quadrature Phase Shift Keying(QPSK)and 16 Quadrature Amplitude Modulation(16QAM)was analyzed under various configurations of transmitting and receiving antennas,transmission power,and the number of transmitted symbols.The results show that as the signal-to-noise ratio(SNR)increases,the bit error rate(BER)gradually decreases.Increasing the number of antennas can reduce the BER,but a balance must be struck between hardware complexity and performance.Under the same SNR,the BER of QPSK is lower than that of 16QAM,and the MMSE-ML joint detection method outperforms the standalone MMSE detection method.This research provides new perspectives and references for optimizing signal detection methods in MIMO systems.

关 键 词：多输入多输出 正交相移键控 正交幅度调制 最小误差检测 最大似然检测 

分 类 号：TN911.23[电子电信—通信与信息系统]