Study of Multicode-Keying Incoherent Optical CDMA Without the Conventional Symbol-Synchronous Assumption
In this paper, the effect of removing the symbol-synchronous assumption in the multicode-keying incoherent optical code-division multiple access (O-CDMA) systems is studied. Under true symbol asynchronism, the multicode-keying modulation can create "two hits" in the periodic cross-correlat...
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| Veröffentlicht in: | Journal of lightwave technology 2016-08, Vol.34 (16), p.3663-3674 |
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| creator | Jing-Shiuan Lin Guu-Chang Yang Cheng-Yuan Chang Kwong, Wing C. |
| description | In this paper, the effect of removing the symbol-synchronous assumption in the multicode-keying incoherent optical code-division multiple access (O-CDMA) systems is studied. Under true symbol asynchronism, the multicode-keying modulation can create "two hits" in the periodic cross-correlation process even though "one-hit" optical codes are used. Three pulse-erasure methods of reducing the occurrence of two hits are studied. By applying optical orthogonal codes to permute the pulses in codewords, a method of constructing one-hit optical codes that can eliminate the occurrence of two hits in "symbol-asynchronous" multicode-keying O-CDMA and enlarge code cardinality is proposed. Performance analytical models for these three two-hit reduction methods and the new optical codes are formulated. Finally, numerical examples are given to compare their performances, and computer-simulation results are presented to validate the analytical models. |
| doi_str_mv | 10.1109/JLT.2016.2589968 |
| format | Article |
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Under true symbol asynchronism, the multicode-keying modulation can create "two hits" in the periodic cross-correlation process even though "one-hit" optical codes are used. Three pulse-erasure methods of reducing the occurrence of two hits are studied. By applying optical orthogonal codes to permute the pulses in codewords, a method of constructing one-hit optical codes that can eliminate the occurrence of two hits in "symbol-asynchronous" multicode-keying O-CDMA and enlarge code cardinality is proposed. Performance analytical models for these three two-hit reduction methods and the new optical codes are formulated. Finally, numerical examples are given to compare their performances, and computer-simulation results are presented to validate the analytical models.</description><identifier>ISSN: 0733-8724</identifier><identifier>EISSN: 1558-2213</identifier><identifier>DOI: 10.1109/JLT.2016.2589968</identifier><identifier>CODEN: JLTEDG</identifier><language>eng</language><publisher>New York: IEEE</publisher><subject>Analytical models ; Code-division multiple access ; Correlation ; Encoding ; multicode keying ; Optical pulses ; Optical receivers ; Optical transmitters ; symbol asynchronous ; wavelength-time codes</subject><ispartof>Journal of lightwave technology, 2016-08, Vol.34 (16), p.3663-3674</ispartof><rights>Copyright The Institute of Electrical and Electronics Engineers, Inc. (IEEE) 2016</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c291t-6ae04812eebd376c1fc8e46d4a8ba841483cf2f5d0c6fe74b2b337be3fba90de3</citedby><cites>FETCH-LOGICAL-c291t-6ae04812eebd376c1fc8e46d4a8ba841483cf2f5d0c6fe74b2b337be3fba90de3</cites><orcidid>0000-0003-3731-5586</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/7508929$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>314,780,784,796,27924,27925,54758</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/7508929$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc></links><search><creatorcontrib>Jing-Shiuan Lin</creatorcontrib><creatorcontrib>Guu-Chang Yang</creatorcontrib><creatorcontrib>Cheng-Yuan Chang</creatorcontrib><creatorcontrib>Kwong, Wing C.</creatorcontrib><title>Study of Multicode-Keying Incoherent Optical CDMA Without the Conventional Symbol-Synchronous Assumption</title><title>Journal of lightwave technology</title><addtitle>JLT</addtitle><description>In this paper, the effect of removing the symbol-synchronous assumption in the multicode-keying incoherent optical code-division multiple access (O-CDMA) systems is studied. Under true symbol asynchronism, the multicode-keying modulation can create "two hits" in the periodic cross-correlation process even though "one-hit" optical codes are used. Three pulse-erasure methods of reducing the occurrence of two hits are studied. By applying optical orthogonal codes to permute the pulses in codewords, a method of constructing one-hit optical codes that can eliminate the occurrence of two hits in "symbol-asynchronous" multicode-keying O-CDMA and enlarge code cardinality is proposed. Performance analytical models for these three two-hit reduction methods and the new optical codes are formulated. Finally, numerical examples are given to compare their performances, and computer-simulation results are presented to validate the analytical models.</description><subject>Analytical models</subject><subject>Code-division multiple access</subject><subject>Correlation</subject><subject>Encoding</subject><subject>multicode keying</subject><subject>Optical pulses</subject><subject>Optical receivers</subject><subject>Optical transmitters</subject><subject>symbol asynchronous</subject><subject>wavelength-time codes</subject><issn>0733-8724</issn><issn>1558-2213</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNo9kDtPwzAUhS0EEqWwI7FYYk7xK7E9VuVVaNWhRYxR4lyTVGkcYgcp_55URUx3ON85uvoQuqVkRinRD2-r3YwRmsxYrLRO1Bma0DhWEWOUn6MJkZxHSjJxia683xNChVBygspt6IsBO4vXfR0q4wqI3mGomi-8bIwroYMm4E07RlmNF4_rOf6sQun6gEMJeOGanxGoXDOm2-GQuzraDo0pO9e43uO59_2hPebX6MJmtYebvztFH89Pu8VrtNq8LBfzVWSYpiFKMiBCUQaQF1wmhlqjQCSFyFSeKUGF4sYyGxfEJBakyFnOucyB2zzTpAA-Rfen3bZz3z34kO5d343v-ZQqSmIZCy1Hipwo0znvO7Bp21WHrBtSStKjz3T0mR59pn8-x8rdqVIBwD8uY6I00_wXYttzYw</recordid><startdate>20160815</startdate><enddate>20160815</enddate><creator>Jing-Shiuan Lin</creator><creator>Guu-Chang Yang</creator><creator>Cheng-Yuan Chang</creator><creator>Kwong, Wing C.</creator><general>IEEE</general><general>The Institute of Electrical and Electronics Engineers, Inc. (IEEE)</general><scope>97E</scope><scope>RIA</scope><scope>RIE</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>7U5</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><orcidid>https://orcid.org/0000-0003-3731-5586</orcidid></search><sort><creationdate>20160815</creationdate><title>Study of Multicode-Keying Incoherent Optical CDMA Without the Conventional Symbol-Synchronous Assumption</title><author>Jing-Shiuan Lin ; Guu-Chang Yang ; Cheng-Yuan Chang ; Kwong, Wing C.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c291t-6ae04812eebd376c1fc8e46d4a8ba841483cf2f5d0c6fe74b2b337be3fba90de3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2016</creationdate><topic>Analytical models</topic><topic>Code-division multiple access</topic><topic>Correlation</topic><topic>Encoding</topic><topic>multicode keying</topic><topic>Optical pulses</topic><topic>Optical receivers</topic><topic>Optical transmitters</topic><topic>symbol asynchronous</topic><topic>wavelength-time codes</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Jing-Shiuan Lin</creatorcontrib><creatorcontrib>Guu-Chang Yang</creatorcontrib><creatorcontrib>Cheng-Yuan Chang</creatorcontrib><creatorcontrib>Kwong, Wing C.</creatorcontrib><collection>IEEE All-Society Periodicals Package (ASPP) 2005-present</collection><collection>IEEE All-Society Periodicals Package (ASPP) 1998-Present</collection><collection>IEEE Electronic Library (IEL)</collection><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Journal of lightwave technology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Jing-Shiuan Lin</au><au>Guu-Chang Yang</au><au>Cheng-Yuan Chang</au><au>Kwong, Wing C.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Study of Multicode-Keying Incoherent Optical CDMA Without the Conventional Symbol-Synchronous Assumption</atitle><jtitle>Journal of lightwave technology</jtitle><stitle>JLT</stitle><date>2016-08-15</date><risdate>2016</risdate><volume>34</volume><issue>16</issue><spage>3663</spage><epage>3674</epage><pages>3663-3674</pages><issn>0733-8724</issn><eissn>1558-2213</eissn><coden>JLTEDG</coden><abstract>In this paper, the effect of removing the symbol-synchronous assumption in the multicode-keying incoherent optical code-division multiple access (O-CDMA) systems is studied. Under true symbol asynchronism, the multicode-keying modulation can create "two hits" in the periodic cross-correlation process even though "one-hit" optical codes are used. Three pulse-erasure methods of reducing the occurrence of two hits are studied. By applying optical orthogonal codes to permute the pulses in codewords, a method of constructing one-hit optical codes that can eliminate the occurrence of two hits in "symbol-asynchronous" multicode-keying O-CDMA and enlarge code cardinality is proposed. Performance analytical models for these three two-hit reduction methods and the new optical codes are formulated. Finally, numerical examples are given to compare their performances, and computer-simulation results are presented to validate the analytical models.</abstract><cop>New York</cop><pub>IEEE</pub><doi>10.1109/JLT.2016.2589968</doi><tpages>12</tpages><orcidid>https://orcid.org/0000-0003-3731-5586</orcidid></addata></record> |
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| source | IEEE Electronic Library (IEL) |
| subjects | Analytical models Code-division multiple access Correlation Encoding multicode keying Optical pulses Optical receivers Optical transmitters symbol asynchronous wavelength-time codes |
| title | Study of Multicode-Keying Incoherent Optical CDMA Without the Conventional Symbol-Synchronous Assumption |
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