NDLI: A Constrained Maximum-SINR NBI-Resistant Receiver for OFDM Systems

Content Provider	IEEE Xplore Digital Library
Author	Darsena, D. Gelli, G. Paura, L. Verde, F.
Copyright Year	1991
Abstract	In this paper, with reference to the problem of joint equalization and narrowband interference (NBI) suppression in orthogonal frequency-division multiplexing (OFDM) systems, synthesis and analysis of both unconstrained and constrained optimum equalizers are carried out, based on the maximum signal-to-noise-plus-interference (SINR) criterion. Specifically, a comparative performance analysis is provided from a theoretical point of view, either when the second-order statistics (SOS) of the received data are exactly known at the receiver, or when they are estimated from a finite number of data samples. Relying on the results of this analysis, a three-stage constrained maximum-SINR equalizer is then proposed, which outperforms existing receivers and, in comparison with its unconstrained counterpart, exhibits a significantly stronger robustness against errors in the estimated SOS. Moreover, a computationally efficient adaptive implementation of the three-stage equalizer is derived, and in connection with it, a simple and effective NBI-resistant channel estimation algorithm is proposed. Finally, numerical simulations are performed that aim to validate the theoretical analysis carried out and compare the performances of the considered equalizers with those of existing approaches
Sponsorship	IEEE Signal Processing Society
Starting Page	3032
Ending Page	3047
Page Count	16
File Size	1101718
File Format	PDF
ISSN	1053587X
Volume Number	55
Issue Number	6
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-06-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	OFDM Equalizers Interference constraints Performance analysis Narrowband Interference suppression Frequency division multiplexing Signal synthesis Signal analysis Signal to noise ratio orthogonal frequency-division multiplexing (OFDM) systems Constrained maximum signal-to-interference-plus-noise ratio (SINR) optimizations narrowband interference (NBI) suppression
Content Type	Text
Resource Type	Article
Subject	Signal Processing Electrical and Electronic Engineering

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