V-BLAST光MIMO系统检测算法分析  

Detection Algorithm in V-BLAST Optical MIMO System

作　　者：李季碧[1] 任薇[1] 邱绍峰[1] 

机构地区：[1]重庆邮电大学通信与信息工程学院,重庆400065

出　　处：《半导体光电》2011年第1期96-98,104,共4页Semiconductor Optoelectronics

基　　金：重庆邮电大学自然科学基金项目(A2009-42)

摘　　要：为了降低系统光多输入多输出(MIMO)系统的复杂度,提高系统的性能,介绍了迫零(ZF)检测算法、最小均方误差(MMSE)检测算法、最大似然(ML)检测算法在垂直分层空时编码(V-BLAST)光MIMO空时系统中的应用。从理论上对算法性能和复杂度进行研究,然后在MATLAB建立仿真模型,对多模光纤的传输函数进行仿真,结果表明在多模光纤链路中,ZF算法性能较低;MMSE算法较ZF算法有所改进;ML算法通过比较接收符号和原发送的符号之间的相似度,从而获得原符号的最小差错概率,其性能最好。In order to reduce the complexity and improve the performance of optical MIMO system,the applications of ZF algorithm,MMSE algorithm and ML algorithm in V-BLAST MIMO system are introduced.The performance and complexity of the algorithms were analyzed in theory,and a simulation model using MATLAB was built to make simulations of the transmission function of multimode fiber.It is indicated that the performance of ZF algorithm is worse than that of MMSE algorithm in the multimode fiber link.ML algorithm gets the minimum error probability by analyzing the difference between the original signal and the received signal.

关 键 词：迫零检测 最小均方误差检测 最大似然检测 多输入多输出 垂直分层空时编码 

分 类 号：TN929.11[电子电信—通信与信息系统]