NDLI: Performance analysis of banded equalizers for OFDM systems in time-varying channels

Content Provider	IEEE Xplore Digital Library
Author	Rugini, L. Banelli, P.
Copyright Year	2007
Description	Author affiliation: Univ. of Perugia, Perugia (Rugini, L.; Banelli, P.)
Abstract	OFDM systems affected by severe time-varying channels greatly benefit from equalization schemes based on intercarrier interference (ICI) mitigation, which guarantee improved performance with respect to conventional one-tap equalizers. By exploiting a semi- analytical approach, this paper assesses the BER performance of the so-called banded equalizers, i.e., those equalizers that take into account only the ICI produced by the closest subcarriers. Specifically, by exploiting the Gaussian approximation of the residual ICI at the equalizer output, we evaluate the BER of block linear equalizers designed under a minimum mean-squared error (MMSE) criterion. Simulation results show a very good agreement with the theoretical analysis. In addition, we derive a lower bound and an approximate upper bound for the BER of block decision-feedback equalizers.
Starting Page	1
Ending Page	5
File Size	257241
Page Count	5
File Format	PDF
ISBN	9781424409549
DOI	10.1109/SPAWC.2007.4401315
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-06-17
Publisher Place	Finland
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Performance analysis OFDM Time-varying channels Bit error rate Upper bound Decision feedback equalizers Gaussian approximation Matrix decomposition Statistics Frequency conversion time-varying channels
Content Type	Text
Resource Type	Article

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