Direct-Sequence Spread Spectrum System

The purpose of this study is to construct and evaluate the performance of a direct-sequence spread spectrum (DSSS) system. The system, based upon a previously published design, uses a special type of injection- locked oscillator called a synchronous oscillator for code synchronization. The DSSS syst...

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1. Verfasser:	Stephens, James P
Format:	Report
Sprache:	eng
Schlagworte:	CODING COMMUNICATION AND RADIO SYSTEMS DATA BASES DIGITAL SYSTEMS FREQUENCY MODULATION MODULATION Radio Communications SEQUENCES SPREAD SPECTRUM SYNCHRONIZATION(ELECTRONICS) UNITED STATES GOVERNMENT
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creator	Stephens, James P
description	The purpose of this study is to construct and evaluate the performance of a direct-sequence spread spectrum (DSSS) system. The system, based upon a previously published design, uses a special type of injection- locked oscillator called a synchronous oscillator for code synchronization. The DSSS system was constructed in a manner that provides a test-bed for demonstrating spread spectrum principles and allows researchers to evaluate their own sub-system design concepts. The DSSS system, designed as a one-way link in the 420-450 MHz band, is constructed to operate in accordance with Federal Communications Commission rules and regulations pertaining to the Amateur Radio Service (Part 97). Unlike conventional DSSS systems which combine digital data with a pseudorandom (PN) code sequence, the system described here directly modulates an FM modulated carrier with the PN code sequence.
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The system, based upon a previously published design, uses a special type of injection- locked oscillator called a synchronous oscillator for code synchronization. The DSSS system was constructed in a manner that provides a test-bed for demonstrating spread spectrum principles and allows researchers to evaluate their own sub-system design concepts. The DSSS system, designed as a one-way link in the 420-450 MHz band, is constructed to operate in accordance with Federal Communications Commission rules and regulations pertaining to the Amateur Radio Service (Part 97). Unlike conventional DSSS systems which combine digital data with a pseudorandom (PN) code sequence, the system described here directly modulates an FM modulated carrier with the PN code sequence.</description><language>eng</language><subject>CODING ; COMMUNICATION AND RADIO SYSTEMS ; DATA BASES ; DIGITAL SYSTEMS ; FREQUENCY MODULATION ; MODULATION ; Radio Communications ; SEQUENCES ; SPREAD SPECTRUM ; SYNCHRONIZATION(ELECTRONICS) ; UNITED STATES GOVERNMENT</subject><creationdate>1990</creationdate><rights>Approved for public release; distribution is unlimited.</rights><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,780,885,27566,27567</link.rule.ids><linktorsrc>$$Uhttps://apps.dtic.mil/sti/citations/ADA223021$$EView_record_in_DTIC$$FView_record_in_$$GDTIC$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>Stephens, James P</creatorcontrib><creatorcontrib>AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING</creatorcontrib><title>Direct-Sequence Spread Spectrum System</title><description>The purpose of this study is to construct and evaluate the performance of a direct-sequence spread spectrum (DSSS) system. 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Unlike conventional DSSS systems which combine digital data with a pseudorandom (PN) code sequence, the system described here directly modulates an FM modulated carrier with the PN code sequence.</description><subject>CODING</subject><subject>COMMUNICATION AND RADIO SYSTEMS</subject><subject>DATA BASES</subject><subject>DIGITAL SYSTEMS</subject><subject>FREQUENCY MODULATION</subject><subject>MODULATION</subject><subject>Radio Communications</subject><subject>SEQUENCES</subject><subject>SPREAD SPECTRUM</subject><subject>SYNCHRONIZATION(ELECTRONICS)</subject><subject>UNITED STATES GOVERNMENT</subject><fulltext>true</fulltext><rsrctype>report</rsrctype><creationdate>1990</creationdate><recordtype>report</recordtype><sourceid>1RU</sourceid><recordid>eNrjZFBzySxKTS7RDU4tLE3NS05VCC4oSk1MAVJA0aLSXIXgyuKS1FweBta0xJziVF4ozc0g4-Ya4uyhm1KSmRxfXJKZl1oS7-jiaGRkbGBkaExAGgDWqCR1</recordid><startdate>19900601</startdate><enddate>19900601</enddate><creator>Stephens, James P</creator><scope>1RU</scope><scope>BHM</scope></search><sort><creationdate>19900601</creationdate><title>Direct-Sequence Spread Spectrum System</title><author>Stephens, James P</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-dtic_stinet_ADA2230213</frbrgroupid><rsrctype>reports</rsrctype><prefilter>reports</prefilter><language>eng</language><creationdate>1990</creationdate><topic>CODING</topic><topic>COMMUNICATION AND RADIO SYSTEMS</topic><topic>DATA BASES</topic><topic>DIGITAL SYSTEMS</topic><topic>FREQUENCY MODULATION</topic><topic>MODULATION</topic><topic>Radio Communications</topic><topic>SEQUENCES</topic><topic>SPREAD SPECTRUM</topic><topic>SYNCHRONIZATION(ELECTRONICS)</topic><topic>UNITED STATES GOVERNMENT</topic><toplevel>online_resources</toplevel><creatorcontrib>Stephens, James P</creatorcontrib><creatorcontrib>AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING</creatorcontrib><collection>DTIC Technical Reports</collection><collection>DTIC STINET</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Stephens, James P</au><aucorp>AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING</aucorp><format>book</format><genre>unknown</genre><ristype>RPRT</ristype><btitle>Direct-Sequence Spread Spectrum System</btitle><date>1990-06-01</date><risdate>1990</risdate><abstract>The purpose of this study is to construct and evaluate the performance of a direct-sequence spread spectrum (DSSS) system. The system, based upon a previously published design, uses a special type of injection- locked oscillator called a synchronous oscillator for code synchronization. The DSSS system was constructed in a manner that provides a test-bed for demonstrating spread spectrum principles and allows researchers to evaluate their own sub-system design concepts. The DSSS system, designed as a one-way link in the 420-450 MHz band, is constructed to operate in accordance with Federal Communications Commission rules and regulations pertaining to the Amateur Radio Service (Part 97). Unlike conventional DSSS systems which combine digital data with a pseudorandom (PN) code sequence, the system described here directly modulates an FM modulated carrier with the PN code sequence.</abstract><oa>free_for_read</oa></addata></record>
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source	DTIC Technical Reports
subjects	CODING COMMUNICATION AND RADIO SYSTEMS DATA BASES DIGITAL SYSTEMS FREQUENCY MODULATION MODULATION Radio Communications SEQUENCES SPREAD SPECTRUM SYNCHRONIZATION(ELECTRONICS) UNITED STATES GOVERNMENT
title	Direct-Sequence Spread Spectrum System
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