关键词: 单载波频域均衡, 信道频率响应, 盲估计, 线性预测算法

Abstract:

A blind scheme to estimate channel frequency response(CFR) in oversampled singlecarrier frequencydomain equalization(SCFDE) systems based on linear prediction algorithm(LPA) is developed. Compared with conventional LPA based timedomain channel estimation approach, this method obtains the closedform solution for CFR directly from tap weights of the prediction filter, rather than crosscorrelation of innovation and measurements. The proposal is robust to channel order overestimation. Its performance is better than that of conventional LPA based timedomain channel estimation approach. Futhermore, it ensures that the channel estimation in timedomain appears finite supporting. Simulations confirm our analysis.

Key words: SC-FDE, CFR, blind estimation, LPA