A FAST COMPUTATION ALGORITHM FOR THE DECISION-FEEDBACK EQUALIZER

被引：14
作者：
LEE, I
CIOFFI, JM
机构：
[1] Information Systems Laboratory, the Department of Electrical Engineering, Stanford University, Stanford
来源：
IEEE TRANSACTIONS ON COMMUNICATIONS | 1995年 / 43卷 / 11期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1109/26.481225
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A novel fast algorithm for computing the decision feedback equalizer settings is proposed. The equalizer filters are computed indirectly, first by estimating the channel, and then by computing the coefficients in the frequency domain with the discrete Fourier transform (DFT). Approximating the correlation matrices by circulant matrices facilitates the whole computation with very small performance loss. The fractionally spaced equalizer settings are derived. The performance of the fast algorithm is evaluated through simulation. The effects of the channel estimation error and finite precision arithmetic are briefly analyzed. Results of simulation show the superiority of the proposed scheme.
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页码：2742 / 2749
页数：8
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