NDLI: Diagonally Loaded Linear MMSE Equalization for UWB Multipath Channel Under Limited Training Sample Support

Content Provider	IEEE Xplore Digital Library
Author	Zhiwei Lin Premkumar, A.B. Madhukumar, A.S. Chin, F.
Copyright Year	2006
Description	Author affiliation: Inst. for Infocomm Res. (Zhiwei Lin)
Abstract	In this paper, diagonally loaded linear minimum mean square error (MMSE) equalization technique is proposed for ultra wideband (UWB) multipath channel in the presence of inter symbol interference (ISI) and multiple access interference (MAI). In the case of practical implementation under limited training sample support, the optimal solution for linear least squares problems is the minimum norm (MN) solution. But it suffers from performance degradation when the sample covariance matrices are ill-conditioned. Diagonal loading (DL) technique is incorporated into MN solution and shown to achieve significant performance improvement when the amount of training symbols is comparable with the number of taps utilized by the equalizer. Moreover, a rank-reduced multistage Wiener filter (MWF) with DL is proposed for UWB multipath channel equalization which requires large number of taps. It is shown to converge to the MN solution with much reduced computational complexity
Starting Page	2359
Ending Page	2363
File Size	1425375
Page Count	5
File Format	PDF
ISBN	0780393910
ISSN	15502252
DOI	10.1109/VETECS.2006.1683279
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-05-07
Publisher Place	Australia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Multipath channels Multiple access interference Mean square error methods Ultra wideband technology Intersymbol interference Least squares methods Degradation Covariance matrix Equalizers Wiener filter
Content Type	Text
Resource Type	Article
Subject	Applied Mathematics Electrical and Electronic Engineering Computer Science Applications

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