基于MISO均衡器的变步长修正常模算法  

Variable step-size modified constant modulus algorithm based on MISO equalizers

作　　者：张艳萍[1] 王珊珊[1] 史岩岩[1] 

机构地区：[1]南京信息工程大学电子与信息工程学院,南京210044

出　　处：《计算机应用研究》2014年第10期3065-3067,共3页Application Research of Computers

基　　金：国家自然科学基金资助项目(61203273);2013年度江苏省高校自然科学研究重大资助项目(13KJA510001);江苏省普通高校研究生科研创新计划项目(CX10B_303Z)

摘　　要：MIMO系统接收端信号之间的相关性严重影响了均衡效果,为此提出一种基于多输入单输出均衡器的变步长修正常模盲均衡算法(MISO-VSS-MCMA)。该算法可以克服信号相位偏转,并能有效抑制用户间干扰;其中误差切换指数型变步长因子可以改善由MISO均衡器之间的信号处理过程所引起的收敛速度下降的问题。仿真表明,与传统的MIMO-MCMA算法相比,基于MISO结构的均衡算法剩余误码率大幅降低,并且变步长因子加快了算法的收敛速度,均衡效果更佳。In order to overcome the correlation between the received signals of the MIMO system which seriously affected the performance of the equalizer, this paper proposed a MISO-VSS-MCMA. The algorithm could overcome the phase rotation of sig- nals, and effectively suppress interference between the users. Index variable step size factor in this algorithm which switched according to the error could improve convergence problem of declining which caused by the signal processing between MISO equalizers. Simulation results show that compared with the traditional algorithm, residual error rate of algorithm based on MISO gets its greatly reduced, moreover, new algorithm performs better because that variable step size factor can accelerate the con- vergence speed.

关 键 词：多输入多输出 修正常模盲均衡 多输入单输出 变步长 

分 类 号：TN911.5[电子电信—通信与信息系统] TP301.6[电子电信—信息与通信工程]