NDLI: Performance Analysis of Constellation Mapping and Channel Estimation in MB-OFDM UWB Systems

Content Provider	IEEE Xplore Digital Library
Author	Changyi Li Guoxin Zheng Min Wang
Copyright Year	2006
Description	Author affiliation: Dept. of Commun. Eng., Shanghai Univ. (Changyi Li; Guoxin Zheng; Min Wang)
Abstract	In this paper, we investigate the influence of channel mismatch errors on the performance of multi-band OFDM (MB-OFDM) UWB systems according to different schemes of constellation mapping. The accuracy in the identification of time-invariant channel is limited either by errors in channel estimation or by noise. A model to analyze the effect of these factors is presented, from which the formula for bit error rate (BER) as a function of signal-to-noise ratio (SNR) is derived. We also analyze the channel estimation based on block-type training sequence and comb-type pilots with linear interpolation, as shown by simulation that the comb-type estimator with appropriate pilot arrangement can achieve better performance than block-type estimator for the typical UWB indoor channel which exhibits low frequency selectivity relatively
Starting Page	1
Ending Page	4
File Size	223015
Page Count	4
File Format	PDF
ISBN	1424405173
DOI	10.1109/WiCOM.2006.122
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-09-22
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Interpolation Baseband OFDM Intersymbol interference Bit error rate Channel estimation Rayleigh channels Frequency estimation Performance analysis Signal to noise ratio
Content Type	Text
Resource Type	Article

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