Analysis and performance evaluation of a pilot-aided interpolated channel estimator for OFDM systems

被引：2
|
作者：
Doukas, Athanasios [1 ]
Kalivas, Grigorios [1 ]
机构：
[1] Univ Patras, Dept Elect & Comp Engn, GR-26110 Patras, Greece
来源：
COMPUTERS & ELECTRICAL ENGINEERING | 2010年 / 36卷 / 03期
关键词：
BER; Interpolation; MSE; OFDM;
D O I：
10.1016/j.compeleceng.2009.10.001
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
In this paper, we propose a novel pilot-aided channel estimator through interpolation for Orthogonal Frequency Division Multiplexing (OFDM) systems that replaces part of the virtual subcarriers with pilot subcarriers (pilots) reducing the interpolation error while keeping the code rate stable. A novel thorough analysis of the Mean Square Error (MSE) of the proposed estimator is given for the general case where data subcarriers are positioned before the first and after the last pilot. Simulations show the improvement of the proposed scheme in MSE and Bit Error Rate (BER) when applied to a practical OFDM wireless local area network type of system with realistic channel conditions. (C) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码：414 / 423
页数：10
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