Blind adaptive channel estimation in OFDM Systems

被引:0
|
作者
Doukopoulos, Xenofon G.
Moustakides, George V.
机构
[1] INRIA Rennes, Rennes, France
[2] Univ Rennes 1, Rennes, France
[3] Univ Thessaly, Dept Comp & Commun Engn, Volos, Greece
关键词
OFDM; blind channel estimation; adaptive algorithms; power iteration; orthogonal iteration; zero padding;
D O I
10.1109/TWC.2006.1673083
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
We consider the problem of blind channel estimation in zero padding OFDM systems, and propose blind adaptive algorithms in order to identify the impulse response of the multipath channel. In particular, we develop RLS and LMS schemes that exhibit rapid convergence combined with low computational complexity and numerical stability. Both versions are obtained by properly modifying the orthogonal iteration method used in Numerical Analysis for the computation of singular vectors. With a number of simulation experiments we demonstrate the satisfactory performance of our adaptive schemes under diverse signaling conditions.
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页码:1716 / 1725
页数:10
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