Walsh Hadamard Transform Precoded MB-OFDM: An Improved High Data Rate Ultrawideband System

This paper examines the performance improvement to be achieved by preceding the OFDM symbol by the Walsh Hadamard transform (WHT) in a multiband orthogonal frequency division multiplexing (MB-OFDM) ultrawideband system. An upper bound on the probability of error for WHT-MB-OFDM in the Rayleigh fadin...

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Hauptverfasser:	Gaffney, B., Fagan, A.D.
Format:	Tagungsbericht
Sprache:	eng ; jpn
Schlagworte:	Bandwidth Fading FCC Interference Matrix converters Narrowband OFDM Rayleigh channels Ultra wideband technology Upper bound
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creator	Gaffney, B. Fagan, A.D.
description	This paper examines the performance improvement to be achieved by preceding the OFDM symbol by the Walsh Hadamard transform (WHT) in a multiband orthogonal frequency division multiplexing (MB-OFDM) ultrawideband system. An upper bound on the probability of error for WHT-MB-OFDM in the Rayleigh fading channel with convolutional coding is derived, and compared to the upper bound for MB-OFDM. For high rate and low constraint length codes, WHT-MB-OFDM is shown to perform better than MB-OFDM. Next, the effect of narrowband interference is studied, and the WHT-MB-OFDM system is shown to perform significantly better than the MB-OFDM system. Finally, a general amplitude probability distribution (APD) function is derived for linearly precoded MB-OFDM systems and the WHT-MB-OFDM system is shown to cause less interference than the MB-OFDM to the co-existing narrowband system
doi_str_mv	10.1109/PIMRC.2006.254404
format	Conference Proceeding
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An upper bound on the probability of error for WHT-MB-OFDM in the Rayleigh fading channel with convolutional coding is derived, and compared to the upper bound for MB-OFDM. For high rate and low constraint length codes, WHT-MB-OFDM is shown to perform better than MB-OFDM. Next, the effect of narrowband interference is studied, and the WHT-MB-OFDM system is shown to perform significantly better than the MB-OFDM system. 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Finally, a general amplitude probability distribution (APD) function is derived for linearly precoded MB-OFDM systems and the WHT-MB-OFDM system is shown to cause less interference than the MB-OFDM to the co-existing narrowband system</description><subject>Bandwidth</subject><subject>Fading</subject><subject>FCC</subject><subject>Interference</subject><subject>Matrix converters</subject><subject>Narrowband</subject><subject>OFDM</subject><subject>Rayleigh channels</subject><subject>Ultra wideband technology</subject><subject>Upper bound</subject><issn>2166-9570</issn><isbn>9781424403295</isbn><isbn>1424403294</isbn><isbn>1424403308</isbn><isbn>9781424403301</isbn><fulltext>true</fulltext><rsrctype>conference_proceeding</rsrctype><creationdate>2006</creationdate><recordtype>conference_proceeding</recordtype><sourceid>6IE</sourceid><sourceid>RIE</sourceid><recordid>eNotj81OwkAUhceoiYg8gHEzL9B653_GHYIICQ0EISZuyKUzlRoKZNpgeHubyOqc8y2-5BDyyCBlDNzzfJItBikH0ClXUoK8IvdM8rYJAfaa9Jyxl82duiEdzrROnDJwR3p1_QMAglkrQHTI1yfu6i0do8cKo6fLiPu6OMSKzmPIDz54mr0ms9Ewe6H9PZ1Ux3g4tXBcfm_pEBukC2wCXe2aiL-lDxvce_pxrptQPZDbopWH3iW7ZDV6Ww7GyXT2Phn0p0nJlG4S5T1yvbGKK-MQCqksIs-1xoI5CEIyL6wxMrd54b3RQTsp0YdcF4o5DaJLnv69ZQhhfYxle-S8lsC5dkb8AR0tVA4</recordid><startdate>200609</startdate><enddate>200609</enddate><creator>Gaffney, B.</creator><creator>Fagan, A.D.</creator><general>IEEE</general><scope>6IE</scope><scope>6IL</scope><scope>CBEJK</scope><scope>RIE</scope><scope>RIL</scope></search><sort><creationdate>200609</creationdate><title>Walsh Hadamard Transform Precoded MB-OFDM: An Improved High Data Rate Ultrawideband System</title><author>Gaffney, B. ; Fagan, A.D.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-i156t-5dda26b852579a0f458aa2c66af190e341d38774c8cfdd76e6944adec6f519603</frbrgroupid><rsrctype>conference_proceedings</rsrctype><prefilter>conference_proceedings</prefilter><language>eng ; jpn</language><creationdate>2006</creationdate><topic>Bandwidth</topic><topic>Fading</topic><topic>FCC</topic><topic>Interference</topic><topic>Matrix converters</topic><topic>Narrowband</topic><topic>OFDM</topic><topic>Rayleigh channels</topic><topic>Ultra wideband technology</topic><topic>Upper bound</topic><toplevel>online_resources</toplevel><creatorcontrib>Gaffney, B.</creatorcontrib><creatorcontrib>Fagan, A.D.</creatorcontrib><collection>IEEE Electronic Library (IEL) Conference Proceedings</collection><collection>IEEE Proceedings Order Plan All Online (POP All Online) 1998-present by volume</collection><collection>IEEE Xplore All Conference Proceedings</collection><collection>IEEE Electronic Library (IEL)</collection><collection>IEEE Proceedings Order Plans (POP All) 1998-Present</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Gaffney, B.</au><au>Fagan, A.D.</au><format>book</format><genre>proceeding</genre><ristype>CONF</ristype><atitle>Walsh Hadamard Transform Precoded MB-OFDM: An Improved High Data Rate Ultrawideband System</atitle><btitle>2006 IEEE 17th International Symposium on Personal, Indoor and Mobile Radio Communications</btitle><stitle>PIMRC</stitle><date>2006-09</date><risdate>2006</risdate><spage>1</spage><epage>5</epage><pages>1-5</pages><issn>2166-9570</issn><isbn>9781424403295</isbn><isbn>1424403294</isbn><eisbn>1424403308</eisbn><eisbn>9781424403301</eisbn><abstract>This paper examines the performance improvement to be achieved by preceding the OFDM symbol by the Walsh Hadamard transform (WHT) in a multiband orthogonal frequency division multiplexing (MB-OFDM) ultrawideband system. An upper bound on the probability of error for WHT-MB-OFDM in the Rayleigh fading channel with convolutional coding is derived, and compared to the upper bound for MB-OFDM. For high rate and low constraint length codes, WHT-MB-OFDM is shown to perform better than MB-OFDM. Next, the effect of narrowband interference is studied, and the WHT-MB-OFDM system is shown to perform significantly better than the MB-OFDM system. Finally, a general amplitude probability distribution (APD) function is derived for linearly precoded MB-OFDM systems and the WHT-MB-OFDM system is shown to cause less interference than the MB-OFDM to the co-existing narrowband system</abstract><pub>IEEE</pub><doi>10.1109/PIMRC.2006.254404</doi><tpages>5</tpages></addata></record>
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identifier	ISSN: 2166-9570
ispartof	2006 IEEE 17th International Symposium on Personal, Indoor and Mobile Radio Communications, 2006, p.1-5
issn	2166-9570
language	eng ; jpn
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source	IEEE Electronic Library (IEL) Conference Proceedings
subjects	Bandwidth Fading FCC Interference Matrix converters Narrowband OFDM Rayleigh channels Ultra wideband technology Upper bound
title	Walsh Hadamard Transform Precoded MB-OFDM: An Improved High Data Rate Ultrawideband System
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