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http://dx.doi.org/10.5515/KJKIEES.2010.21.1.076

Performance Analysis of Block Linear MMSE Equalization for OFDM Systems in Doubly Selective Channels  

Lim, Dong-Min (Department of Electronic Engineering, Gyeongsang National University)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.21, no.1, 2010 , pp. 76-82 More about this Journal
Abstract
In this paper, we analyze the performance of the block linear MMSE equalization for OFDM systems in doubly selective channels by computer simulations. The block linear MMSE equalization shows somewhat unusual BER characteristics in that the BER curve drops at first as SNR increases but then rises up as SNR increases further beyond some point. In this paper, we investigate the BER characteristics of the block linear MMSE equalization by analyzing the condition number of the coefficient matrix in the linear system involved in the equalization process, and propose a new method to avoid the BER performance degradation at high SNR.
Keywords
OFDM; Doubly Selective Channel; Linear MMSE Equalization; Condition Number;
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Times Cited By KSCI : 1  (Citation Analysis)
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