NDLI: Polynomial estimation of time-varying multipath gains with ICI mitigation in OFDM systems

Content Provider	IEEE Xplore Digital Library
Author	Hijazi, H. Ros, L.
Copyright Year	2008
Description	Author affiliation: Dept. Image Signal, GIPSA-Lab., St. Martin d'Heres (Hijazi, H.; Ros, L.)
Abstract	In this paper, we present a mean square error (MSE) theoretical analysis for a multipath channel complex gains estimation algorithm with inter-sub-carrier-interference (ICI) mitigation in orthogonal frequency division multiplexing (OFDM) high speed mobile receiver. Each complex gain time- variation is approximated in a polynomial fashion within several OFDM symbols, where the polynomial coefficients are obtained from the estimated time-averaged gain values. After that, the channel matrix is easily computed and the ICI is reduced by using successive interference suppression (SIS) during data symbol detection. The algorithm performance is further enhanced by an iterative procedure. Theoretical analysis for Rayleigh channel with Jakes'spectrum and simulation results show that the low computational complexity proposed algorithm has good performance in the presence of high normalised Doppler spread.
Starting Page	905
Ending Page	910
File Size	646728
Page Count	6
File Format	PDF
ISBN	9781424416875
DOI	10.1109/ISCCSP.2008.4537352
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-03-12
Publisher Place	Malta
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Algorithm design and analysis Error analysis OFDM Polynomial approximation Frequency estimation Multipath channels Mean square error Interference suppression Time varying systems Mean square error methods Time-varying channels Polynomials Iterative algorithms
Content Type	Text
Resource Type	Article

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