NDLI: Impact of RF front-end non-idealities on performances of SIMO-OFDM receiver

Content Provider	IEEE Xplore Digital Library
Author	Xu, X. Sahai, A. Morlat, P.F. Verdier, J. Villemaud, G. Gorce, J.M.
Copyright Year	2006
Description	Author affiliation: LPM, INSA-Lyon, Villeurbanne (Xu, X.; Sahai, A.)
Abstract	Today, in OFDM systems, zero-IF receivers are very appealing, because they avoid costly IF filters. However, this very popular architecture implies IQ demodulation at RF and thus introduces new drawbacks and large performance degradations. It's therefore very important to study the impact of RF front-end non- idealities on performances of OFDM receiver. Especially, it's necessary to investigate the influence of I/Q gain and phase imbalance, local oscillator phase noise and non-linear distortion. In this paper, 802.11g standard has been studied in terms of bit error rate (BER) and constellation of each subcarrier. Simulated and measured results have been studied in the four arms SMI (sample matrix inversion) as compared with a single antenna receiver. Two channel conditions, AWGN channel and multipath channel (taking account the fading correlation), have been modelled and studied to quantify WLAN performance degradations but also to evaluate the efficiency of a multi element antennas system at the receiver to improve significantly the performances of a wireless system. Advanced design system (ADS - Agilent Technologies) software and a radio test-bed have been used in this work.
Starting Page	1
Ending Page	5
File Size	3976010
Page Count	5
File Format	PDF
ISBN	9789290929376
DOI	10.1109/EUCAP.2006.4584690
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-11-06
Publisher Place	France
Access Restriction	Subscribed
Rights Holder	ESA
Subject Keyword	Radio frequency Degradation Performance evaluation Phase noise Local oscillators Filters OFDM Bit error rate Receiving antennas Demodulation
Content Type	Text
Resource Type	Article

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