非高斯信道下的非线性空时多用户检测器

Nonlinear Space-time Multiuser Detector Based on Non-Gaussian Channels

为了减轻冲激噪声和多径干扰的影响,本文提出了一种基于DS-CDMA同步信道的空时非线性接收机。该接收机联合了线性解相关器和带有基于相关匹配M yriad非线性滤波器的非线性前端的天线阵列。将这种M yriad滤波器合并在一起以消除冲激噪声和阻止其进入系统。所提出的检测器采用了一种结构来估计冲激噪声系数和修正非线性滤波器系数。仿真结果表明,这种空时接收机在空时领域的非线性信号处理方面具有很好的性能。

A space-time nonlinear receiver for a DS-CDMA synchronous channel is proposed for jointly mitigating impulsive noise and multiple access interference. The proposed scheme combines linear decorrelators and antenna arrays with nonlinear front ends based on the Affinity Matched Myriad nonlinear filter. This Myriad filter is incorporated to combat the impulsive noise and prevent it from entering the system. The proposed detector also incorporates a structure for estimating the impulsive noise parameter in order to update a filter parameter called the nonlinearity parameter. The simulation results of the proposed space-time receiver are presented to justify the in the space-time domain. relative merits of nonlinear signal processing