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Time Domain Equalizer Design Using Bit Error Rate Minimization for UWB Systems

Husain, Syed Imtiaz; Yuan, Jinhong; Zhang, Jian (Andrew); Martin, R.K.

Description

Ultra-wideband (UWB) communication systems occupy huge bandwidths with very low power spectral densities. This feature makes the UWB channels highly rich in resolvable multipaths. To exploit the temporal diversity, the receiver is commonly implemented through a Rake. The aim to capture enough signal energy to maintain an acceptable output signal-to-noise ratio (SNR) dictates a very complicated Rake structure with a large number of fingers. Channel shortening or time domain equalizer (TEQ) can...[Show more]

dc.contributor.authorHusain, Syed Imtiaz
dc.contributor.authorYuan, Jinhong
dc.contributor.authorZhang, Jian (Andrew)
dc.contributor.authorMartin, R.K.
dc.date.accessioned2015-12-10T22:54:30Z
dc.identifier.issn1687-1472
dc.identifier.urihttp://hdl.handle.net/1885/59677
dc.description.abstractUltra-wideband (UWB) communication systems occupy huge bandwidths with very low power spectral densities. This feature makes the UWB channels highly rich in resolvable multipaths. To exploit the temporal diversity, the receiver is commonly implemented through a Rake. The aim to capture enough signal energy to maintain an acceptable output signal-to-noise ratio (SNR) dictates a very complicated Rake structure with a large number of fingers. Channel shortening or time domain equalizer (TEQ) can simplify the Rake receiver design by reducing the number of significant taps in the effective channel. In this paper, we first derive the bit error rate (BER) of a multiuser and multipath UWB system in the presence of a TEQ at the receiver front end. This BER is then written in a form suitable for traditional optimization. We then present a TEQ design which minimizes the BER of the system to perform efficient channel shortening. The performance of the proposed algorithm is compared with some generic TEQ designs and other Rake structures in UWB channels. It is shown that the proposed algorithm maintains a lower BER along with efficiently shortening the channel.
dc.publisherHindawi Publishing Corporation
dc.sourceEURASIP Journal on Wireless Communications and Networking
dc.subjectKeywords: Channel shortening; Efficient channels; Low Power; Multi-path; Multi-user; Multipaths; Number of fingers; Output signal-to-noise ratios; RAKE receiver; RAKE structures; Receiver front-ends; Signal energy; Temporal diversity; Time-domain equalizers; Ultra
dc.titleTime Domain Equalizer Design Using Bit Error Rate Minimization for UWB Systems
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume2009
dc.date.issued2009
local.identifier.absfor100510 - Wireless Communications
local.identifier.ariespublicationU4105084xPUB503
local.type.statusPublished Version
local.contributor.affiliationHusain, Syed Imtiaz, University of New South Wales
local.contributor.affiliationYuan, Jinhong, University of New South Wales
local.contributor.affiliationZhang, Jian (Andrew), College of Engineering and Computer Science, ANU
local.contributor.affiliationMartin, R.K., US Air Force
local.description.embargo2037-12-31
local.bibliographicCitation.issue786291
local.bibliographicCitation.startpage11
local.identifier.doi10.1155/2009/786291
dc.date.updated2016-02-24T10:35:58Z
local.identifier.scopusID2-s2.0-68949090050
CollectionsANU Research Publications

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