<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>1665-6423</journal-id>
<journal-title><![CDATA[Journal of applied research and technology]]></journal-title>
<abbrev-journal-title><![CDATA[J. appl. res. technol]]></abbrev-journal-title>
<issn>1665-6423</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional Autónoma de México, Instituto de Ciencias Aplicadas y Tecnología]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1665-64232003000200003</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Design and implementation of a CDMA transmitter for mobile cellular communications]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Muraoka]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Covarrubias]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Arvizu]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mendieta]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Centro de Investigación Científica y de Educación Superior de Ensenada  ]]></institution>
<addr-line><![CDATA[Ensenada Baja California]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2003</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2003</year>
</pub-date>
<volume>1</volume>
<numero>2</numero>
<fpage>127</fpage>
<lpage>136</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1665-64232003000200003&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1665-64232003000200003&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1665-64232003000200003&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[In this work we describe the design and implementation of a CDMA transmitter with application on third generation mobile and personal communication systems. We present several experimental results.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[En este trabajo se describe el diseño e implementación de un transmisor CDMA con una aplicación en sistemas móviles y personales de comunicación de tercera generación. Asimismo, se presentan varios resultados experimentales.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[CDMA transmitter]]></kwd>
<kwd lng="en"><![CDATA[Mobile communications]]></kwd>
<kwd lng="en"><![CDATA[Gold codes]]></kwd>
<kwd lng="en"><![CDATA[Shift register]]></kwd>
<kwd lng="en"><![CDATA[PN codes]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[  	    <p align="center"><font face="verdana" size="4"><b>Design and implementation of a CDMA transmitter for mobile cellular communications</b></font></p>  	    <p>&nbsp;</p>  	    <p align="center"><font face="verdana" size="2"><b>R. Muraoka, D. Covarrubias, A. Arvizu &amp; J. Mendieta</b></font></p>  	    <p>&nbsp;</p>  	    <p align="justify"><font face="verdana" size="2"><i>Centro de Investigaci&oacute;n Cient&iacute;fica y de Educaci&oacute;n Superior de Ensenada, Km 107 Carretera Tijuana&#45;Ensenada, B.C., M&eacute;xico.</i> Phone: +52(646) 1745050 to 55 Fax: +52(646)1750549, E&#45;mail: <a href="mailto:rmuraoka@cicese.mx">rmuraoka@cicese.mx</a></font></p>  	    <p>&nbsp;</p>  	    <p align="justify"><font face="verdana" size="2">Received: April 29<sup>th</sup> 2001.    <br> 	Accepted: September 8<sup>th</sup> 2001.</font></p>  	    <p align="justify"><font face="verdana" size="2">    ]]></body>
<body><![CDATA[<br></font></p>  	    <p align="justify"><font face="verdana" size="2"><b>ABSTRACT</b></font></p>      <p align="justify"><font face="verdana" size="2">In this work we describe the design and implementation of a CDMA transmitter with application on third generation mobile and personal communication systems. We present several experimental results.</font></p>  	    <p align="justify"><font face="verdana" size="2"><b>Keywords</b>: CDMA transmitter, Mobile communications, Gold codes, Shift register, PN codes.</font></p>  	    <p>&nbsp;</p>  	    <p align="justify"><font face="verdana" size="2"><b>RESUMEN</b></font></p>      <p align="justify"><font face="verdana" size="2">En este trabajo se describe el dise&ntilde;o e implementaci&oacute;n de un transmisor CDMA con una aplicaci&oacute;n en sistemas m&oacute;viles y personales de comunicaci&oacute;n de tercera generaci&oacute;n. Asimismo, se presentan varios resultados experimentales.</font></p>  	    <p>&nbsp;</p>  	    <p align="justify"><font face="verdana" size="2"><a href="/pdf/jart/v1n2/v1n2a3.pdf" target="_blank">DESCARGAR ART&Iacute;CULO EN FORMATO PDF</a></font></p>  	    <p>&nbsp;</p>  	    ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2"><b>References</b></font></p>  	    <!-- ref --><p align="justify"><font face="verdana" size="2">&#91;1&#93; John G. Proakis, "Digital Communications " , Mc Graw Hill, Third edition, (1995).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=4813844&pid=S1665-6423200300020000300001&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>  	    <!-- ref --><p align="justify"><font face="verdana" size="2">&#91;2&#93; B. Sklar, "Digital communications: Fundamentals and applications", Prentice&#45;Hall, (1998).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=4813846&pid=S1665-6423200300020000300002&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>  	    <!-- ref --><p align="justify"><font face="verdana" size="2">&#91;3&#93; Dixon, Robert C. "Spread Spectrum Systems", Wiley&#45;Interscience, Second edition, (1984).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=4813848&pid=S1665-6423200300020000300003&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>  	    <!-- ref --><p align="justify"><font face="verdana" size="2">&#91;4&#93; Shilling, Belove, Ch. "Circuitos Electr&oacute;nicos", Mc Graw Hill, Tercera edici&oacute;n, (1993).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=4813850&pid=S1665-6423200300020000300004&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>  	    <!-- ref --><p align="justify"><font face="verdana" size="2">&#91;5&#93; Covarrubias, Salaices y Mendoza, "CDMA en comunicaciones inal&aacute;mbricas: Teoria y aplicaciones", Comunicaciones Acad&eacute;micas, CICESE, (2000).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=4813852&pid=S1665-6423200300020000300005&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>  	    <!-- ref --><p align="justify"><font face="verdana" size="2">&#91;6&#93; Viterbi, A. J. "When not to spread spectrum a sequel", IEEE Communications Mag., vol 23, April (1985), pp. 12&#45;17.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=4813854&pid=S1665-6423200300020000300006&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>  	    <!-- ref --><p align="justify"><font face="verdana" size="2">&#91;7&#93; Viterbi, A. J. "CDMA, Principles of Spread Spectrum Communication Reading", MA: Addison&#45;Wesley, (1994).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=4813856&pid=S1665-6423200300020000300007&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>  	    <!-- ref --><p align="justify"><font face="verdana" size="2">&#91;8&#93; Lee, W.C. Y. "Mobile Cellular Telecommunications" 2nd edition, McGraw&#45;Hill Book Company, New York, (1995).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=4813858&pid=S1665-6423200300020000300008&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>  	    <!-- ref --><p align="justify"><font face="verdana" size="2">&#91;9&#93; Proakis, J. G. "Digital Communications" 2nd edition, McGraw&#45;Hill Book Company, New York, (1989).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=4813860&pid=S1665-6423200300020000300009&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>  	    <!-- ref --><p align="justify"><font face="verdana" size="2">&#91;10&#93; Designer reference manual, Analog Devices, Inc., winter (1999).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=4813862&pid=S1665-6423200300020000300010&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>  	    <!-- ref --><p align="justify"><font face="verdana" size="2">&#91;11&#93; Shilling, Donald L. Charles Belove "Circuitos electronicos discretos e integrados" tercera edicion McGraw&#45;Hill, (1994).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=4813864&pid=S1665-6423200300020000300011&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p> 	    <!-- ref --><p align="justify"><font face="verdana" size="2">&#91;12&#93; Ojara T. &amp; Prasad R. "Wideband CDMA for Third Generation Mobile Communications", Artech House Publisher, (1998).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=4813866&pid=S1665-6423200300020000300012&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>      ]]></body><back>
<ref-list>
<ref id="B1">
<label>1</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Proakis]]></surname>
<given-names><![CDATA[John G.]]></given-names>
</name>
</person-group>
<source><![CDATA[Digital Communications]]></source>
<year>1995</year>
<edition>Third</edition>
<publisher-name><![CDATA[Mc Graw Hill]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B2">
<label>2</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Sklar]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
</person-group>
<source><![CDATA[Digital communications: Fundamentals and applications]]></source>
<year>1998</year>
<publisher-name><![CDATA[Prentice-Hall]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B3">
<label>3</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Dixon]]></surname>
<given-names><![CDATA[Robert C.]]></given-names>
</name>
</person-group>
<source><![CDATA[Spread Spectrum Systems]]></source>
<year>1984</year>
<edition>Second</edition>
<publisher-name><![CDATA[Wiley-Interscience]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B4">
<label>4</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Shilling]]></surname>
</name>
<name>
<surname><![CDATA[Belove]]></surname>
<given-names><![CDATA[Ch.]]></given-names>
</name>
</person-group>
<source><![CDATA[Circuitos Electrónicos]]></source>
<year>1993</year>
<edition>Tercera</edition>
<publisher-name><![CDATA[Mc Graw Hill]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B5">
<label>5</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Covarrubias]]></surname>
</name>
<name>
<surname><![CDATA[Salaices]]></surname>
</name>
<name>
<surname><![CDATA[Mendoza]]></surname>
</name>
</person-group>
<source><![CDATA[CDMA en comunicaciones inalámbricas: Teoria y aplicaciones]]></source>
<year>2000</year>
<publisher-name><![CDATA[CICESE]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B6">
<label>6</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Viterbi]]></surname>
<given-names><![CDATA[A. J.]]></given-names>
</name>
</person-group>
<article-title xml:lang="en"><![CDATA[When not to spread spectrum a sequel]]></article-title>
<source><![CDATA[IEEE Communications Mag.]]></source>
<year>Apri</year>
<month>l </month>
<day>(1</day>
<volume>23</volume>
<page-range>12-17</page-range></nlm-citation>
</ref>
<ref id="B7">
<label>7</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Viterbi]]></surname>
<given-names><![CDATA[A. J.]]></given-names>
</name>
</person-group>
<source><![CDATA[CDMA, Principles of Spread Spectrum Communication Reading]]></source>
<year>1994</year>
<publisher-loc><![CDATA[^eMA MA]]></publisher-loc>
<publisher-name><![CDATA[Addison-Wesley]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B8">
<label>8</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Lee]]></surname>
<given-names><![CDATA[W.C. Y.]]></given-names>
</name>
</person-group>
<source><![CDATA[Mobile Cellular Telecommunications]]></source>
<year>1995</year>
<edition>2</edition>
<publisher-loc><![CDATA[New York ]]></publisher-loc>
<publisher-name><![CDATA[McGraw-Hill Book Company]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B9">
<label>9</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Proakis]]></surname>
<given-names><![CDATA[J. G.]]></given-names>
</name>
</person-group>
<source><![CDATA[Digital Communications]]></source>
<year>1989</year>
<edition>2</edition>
<publisher-loc><![CDATA[New York ]]></publisher-loc>
<publisher-name><![CDATA[McGraw-Hill Book Company]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B10">
<label>10</label><nlm-citation citation-type="book">
<source><![CDATA[Designer reference manual]]></source>
<year>1999</year>
<publisher-name><![CDATA[Analog Devices, Inc.]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B11">
<label>11</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Shilling]]></surname>
<given-names><![CDATA[Donald L.]]></given-names>
</name>
<name>
<surname><![CDATA[Belove]]></surname>
<given-names><![CDATA[Charles]]></given-names>
</name>
</person-group>
<source><![CDATA[Circuitos electronicos discretos e integrados]]></source>
<year>1994</year>
<edition>tercera</edition>
<publisher-name><![CDATA[McGraw-Hill]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B12">
<label>12</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ojara]]></surname>
<given-names><![CDATA[T.]]></given-names>
</name>
<name>
<surname><![CDATA[Prasad]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
</person-group>
<source><![CDATA[Wideband CDMA for Third Generation Mobile Communications]]></source>
<year>1998</year>
<publisher-name><![CDATA[Artech House Publisher]]></publisher-name>
</nlm-citation>
</ref>
</ref-list>
</back>
</article>
