面向毫米波应用的一种改进的常数模盲均衡算法

本文面向毫米波零中频架构,针对毫米波系统信道时变性、环境敏感性,以及零中频载波同步性能等问题,对现有的盲均衡算法进行了理论分析,并对CMA、MCMA两种具备工程化意义的算法进行了仿真实验分析。结合毫米波大容量数据高速处理需求,给出了可硬件实现的并行处理方法。最后,针对CMA算法收敛后剩余误差较大的问题进行了改进,结合泄漏算法和高阶累积量思想提出了一种修正的CMA算法,在与传统CMA算法收敛速度相当的条件下降低了系统的码间干扰。

Improved Constant Module Blind Equalization Algorithm for Millimeter Wave Application

In this paper, the existed blind equalization algorithms were theoretically analyzed considering the channel time-varying, environmental sensitivity, and the performance of carrier synchronization for millimeter-wave zero-IF application, and the CMA and MCMA algorithm were analyzed by simulation. In order to realize large capacity data process, a kind of parallel processing method based on iterative short convolution were introduced. At the end of this paper, an improved CMA algorithm in which leakage algorithm and higher-order cumulant algorithm were introduced was proposed to improve residual error level of common CMA algorithm.