电力线载波通信的信道估计和均衡定点化仿真分析

The simulation analysis of fix point channel estimation and equalization algorithms in power line communication

基于国家电网用电信息采集规范,通过对信道估计和均衡算法分析,确定了在电力线载波通信(Power Line Communication,PLC)芯片中使用最小二乘法(Least Squares,LS)信道估计算法。在算法定点化分析过程中,研究了LS信道估计定点化实现时参数的不同定点字长对系统性能的影响。综合考虑系统性能和面积的trade off(权衡),选取了芯片实现的最优定点化字长。为芯片的算法实现设计提供了一种算法分析方法。

This paper is based on Specification of State Grid for power grid information collection.It studied channel estimation and equalization algorithms for Power Line Communication.In consideration of the algorithm complexity,it chose LS (Least Squares) channel estimation equalization algorithm in the PLC chip.In this paper,the algorithms performance and chip area trade off in the fix point realization were considered.It analyzed the system performance of different fixed-point bit widths in channel estimation algorithms,gave out proper fixed-point bit widths for the realization of channel estimation and equalization algorithms in the PLC chip.This paper provides an algorithm analysis method for chip algorithm realization.