短波宽带OFDM系统的信道估计新方法  

A New Channel Estimation Algorithm of Shortwave Broadband OFDM System

作　　者：杨蕾 张友爱[1] 

机构地区：[1]哈尔滨工程大学信息与通信工程学院

出　　处：《武汉理工大学学报》2006年第9期99-101,共3页Journal of Wuhan University of Technology

基　　金：船舶工业国防科技预研基金(3.7.3)

摘　　要：提出了一种新的适用于短波宽带OFDM系统的信道估计方法。此方法基于对导频时域序列的循环相关与循环自相关的处理得到导频处的信道冲击响应,再利用高斯内插方法得到其他位置的信道冲击响应。通过采用这种方法可以有效地消除各径对其他径的影响,使系统的性能有较大提高,且相对运算量不大,利于工程实现。This paper proposed a channel estimation algorithm that was suitable for short wave broadband OFDM system. This algorithm got the channel response of pilot symbols with circular correlation and lag correlation of pilot symbols＇ time dimension sequence, and then got the other positions＇ channel response with the Gauss interpolation filter. This algorithm could eliminate the effects that come from other paths. This algorithm could eliminate the effects that come from other paths and improve the performance of system obviously. The calculation of this algorithm was not complex correspondingly. It was propitious to engineering realization.

关 键 词：信道估计 短波宽带 OFDM 

分 类 号：TN911[电子电信—通信与信息系统]