ÿþ<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns="http://www.w3.org/TR/REC-html40"> <head> <meta http-equiv=Content-Type content="text/html; charset=unicode"> <meta name=ProgId content=Word.Document> <meta name=Generator content="Microsoft Word 10"> <meta name=Originator content="Microsoft Word 10"> <link rel=File-List href="June16-2003_files/filelist.xml"> <link rel=Edit-Time-Data href="June16-2003_files/editdata.mso"> <!--[if !mso]> <style> v\:* {behavior:url(#default#VML);} o\:* {behavior:url(#default#VML);} w\:* {behavior:url(#default#VML);} .shape {behavior:url(#default#VML);} </style> <![endif]--> <title>Seminar: July 09, 2002</title> <!--[if gte mso 9]><xml> <o:DocumentProperties> <o:Author>Dide Ergüven</o:Author> <o:LastAuthor>Dide Ergüven</o:LastAuthor> <o:Revision>2</o:Revision> <o:TotalTime>0</o:TotalTime> <o:Created>2003-05-26T07:57:00Z</o:Created> <o:LastSaved>2003-05-26T07:57:00Z</o:LastSaved> <o:Pages>1</o:Pages> <o:Words>197</o:Words> <o:Characters>1129</o:Characters> <o:Company>Bilkent Üniversitesi</o:Company> <o:Lines>9</o:Lines> <o:Paragraphs>2</o:Paragraphs> <o:CharactersWithSpaces>1324</o:CharactersWithSpaces> <o:Version>10.2625</o:Version> </o:DocumentProperties> </xml><![endif]--><!--[if gte mso 9]><xml> <w:WordDocument> <w:SpellingState>Clean</w:SpellingState> <w:GrammarState>Clean</w:GrammarState> <w:BrowserLevel>MicrosoftInternetExplorer4</w:BrowserLevel> </w:WordDocument> </xml><![endif]--> <style> <!--a:link {font-weight: Regular;} a:visited {font-weight: Regular;} a:active {font-weight: Regular;} A:hover { color: #A0A0A0 } h2 {FONT-FACE: Bold;} /* Font Definitions */ @font-face {font-family:Verdana; 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mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman";} </style> <![endif]--><!--[if gte mso 9]><xml> <o:shapedefaults v:ext="edit" spidmax="2050"/> </xml><![endif]--><!--[if gte mso 9]><xml> <o:shapelayout v:ext="edit"> <o:idmap v:ext="edit" data="1"/> </o:shapelayout></xml><![endif]--> </head> <body bgcolor=white lang=EN-US link=blue vlink=blue style='tab-interval:36.0pt'> <div class=Section1> <p class=MsoNormal> <link rev=made href="mailto:guvenir@cs.bilkent.edu.tr"> <span style='font-family:Arial'><a href="http://www.bilkent.edu.tr" title="Bilkent Üniversitesi"><!-- OWNER_INFO="Bilkent University, Department of Computer Engineering --><span style='font-size:13.5pt;color:navy'>Bilkent University</span></a><br> <a href="http://www.cs.bilkent.edu.tr" title="Bilgisayar Mühendislii Bölümü"><span style='font-size:13.5pt;color:red'>Department of Computer Engineering</span></a> <o:p></o:p></span></p> <div class=MsoNormal align=center style='text-align:center'><span style='font-family:Arial'> <hr size=2 width="100%" noshade color=navy align=center> </span></div> <p class=MsoNormal align=center style='text-align:center'><b><span style='font-size:13.5pt;font-family:"Century Gothic";mso-bidi-font-family:Arial; color:#007744'>S E M I N A R</span></b><span style='font-family:"Century Gothic"; mso-bidi-font-family:Arial'> <o:p></o:p></span></p> <h2 align=center style='text-align:center'><span style='font-size:18.0pt; font-family:"Century Gothic";mso-bidi-font-family:Arial;color:navy;font-weight: normal'>CDMA and Receiver Diversity </span><span style='mso-bidi-font-family: Arial'><o:p></o:p></span></h2> <p align=center style='text-align:center'><span style='font-family:"Century Gothic"; mso-bidi-font-family:Arial'>&nbsp;<o:p></o:p></span></p> <h3 align=center style='text-align:center'><span class=SpellE><span style='font-family:"Century Gothic"'>Fatih</span></span><span style='font-family: "Century Gothic"'> <span class=SpellE>Ulup1nar</span> <o:p></o:p></span></h3> <p align=center style='text-align:center'><span style='font-size:13.5pt; font-family:"Century Gothic";mso-bidi-font-family:Arial;color:gray'>Qualcomm Inc., California<o:p></o:p></span></p> <p align=center style='text-align:center'><b><span style='font-size:10.0pt; font-family:"Century Gothic";mso-bidi-font-family:Arial;color:gray'>&nbsp;<o:p></o:p></span></b></p> <p align=center style='text-align:center'><span style='font-family:"Century Gothic"; mso-bidi-font-family:Arial'>&nbsp;<o:p></o:p></span></p> <p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'><span style='font-family:"Trebuchet MS"'>Code Division Multiple Access (CDMA), the wireless communication standard popularized by Qualcomm Inc., forms the basis of the 3G wireless communication standards and is the fastest growing wireless technology in the world. In this talk, I will describe the basics of CDMA, as implemented by IS95, and discuss how CDMA mitigates the common problems faced by competing technologies, FDMA and TDMA. In the second part, potential capacity increases achievable by receiver diversity will be presented. A form-factor-accurate PCS-band dual-antenna, dual-receive chain CDMA handset was constructed to assess receive diversity gains achievable with a device of this size. The handset was drive tested on a commercial CDMA2000 1X RC4 system and on a trial TIA-856 (1xEV-DO) system in multiple RF environments. Across the environments tested, diversity gain was up to %89 suggesting a similar increase in system capacity if all subscribers on the network used our prototype phone. </span></p> <p><span style='font-family:Verdana;mso-bidi-font-family:Arial'><br> &nbsp;</span><span style='font-family:Arial'><o:p></o:p></span></p> <p><b><span style='font-family:Arial;color:red'>DATE:</span></b><b><span style='font-family:Arial'> June 16, 2003, Tuesday @ 14:00 <br> </span></b><b><span style='font-family:Arial;color:red'>PLACE:</span></b><b><span style='font-family:Arial'> EA-409</span></b><span style='font-family:Arial'><o:p></o:p></span></p> </div> </body> </html>