Beat Noise Compensation in OCDMA Systems Using Soft Decoding Based FEC
In this paper we study Forward Error Correction (FEC) under beat noise assumption in the context of incoherent Optical Code Division Multiple Access (OCDMA) systems. Due to the use of unipolar codes, Multiple Access Interference (MAI) amount and thus beatings between different user contributions kno...
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| Veröffentlicht in: | IEEE transactions on communications 2011-05, Vol.59 (5), p.1400-1410 |
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| creator | Sahuguede, S Julien-Vergonjanne, A Cances, J P |
| description | In this paper we study Forward Error Correction (FEC) under beat noise assumption in the context of incoherent Optical Code Division Multiple Access (OCDMA) systems. Due to the use of unipolar codes, Multiple Access Interference (MAI) amount and thus beatings between different user contributions known as beat noise, constitute important limitations in particular for high data rates. In order to compensate for these two major limitations, we propose a solution using FEC based on a soft decoding algorithm. For this purpose, we analyze the OCDMA received signal distribution and establish a new model, based on a mixture of chi-square distributions, valuable for any OCDMA code parameters and any source coherence time values. From this model, we establish the error probability analytical expression under beat noise assumption and determine the reliability parameters required for the FEC soft decoder initialization. To illustrate the performance, we use Low Density Parity Check (LDPC) codes and show that the LDPC adapted decoder is highly efficient in reducing beat noise and MAI for incoherent OCDMA systems, even when beat noise has a severe impact. In addition, we point out that this solution permits increasing data rates or number of active users. |
| doi_str_mv | 10.1109/TCOMM.2011.040111.100199 |
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Due to the use of unipolar codes, Multiple Access Interference (MAI) amount and thus beatings between different user contributions known as beat noise, constitute important limitations in particular for high data rates. In order to compensate for these two major limitations, we propose a solution using FEC based on a soft decoding algorithm. For this purpose, we analyze the OCDMA received signal distribution and establish a new model, based on a mixture of chi-square distributions, valuable for any OCDMA code parameters and any source coherence time values. From this model, we establish the error probability analytical expression under beat noise assumption and determine the reliability parameters required for the FEC soft decoder initialization. To illustrate the performance, we use Low Density Parity Check (LDPC) codes and show that the LDPC adapted decoder is highly efficient in reducing beat noise and MAI for incoherent OCDMA systems, even when beat noise has a severe impact. In addition, we point out that this solution permits increasing data rates or number of active users.</description><identifier>ISSN: 0090-6778</identifier><identifier>EISSN: 1558-0857</identifier><identifier>DOI: 10.1109/TCOMM.2011.040111.100199</identifier><identifier>CODEN: IECMBT</identifier><language>eng</language><publisher>New York, NY: IEEE</publisher><subject>Adaptive optics ; Applied sciences ; beat noise ; Code Division Multiple Access ; Coding, codes ; Decoders ; Decoding ; Density ; Detection, estimation, filtering, equalization, prediction ; Exact sciences and technology ; Exact solutions ; Forward error correction ; incoherent/coherent optical regime ; Information, signal and communications theory ; Interference ; low density parity check codes ; Mathematical analysis ; Mathematical models ; Multiple access ; multiple access interference ; Noise ; Optical fiber communications ; Optical networks ; Optical noise ; Optical receivers ; Optical telecommunications ; Signal and communications theory ; Signal, noise ; Studies ; Systems, networks and services of telecommunications ; Telecommunications ; Telecommunications and information theory ; Transmission and modulation (techniques and equipments)</subject><ispartof>IEEE transactions on communications, 2011-05, Vol.59 (5), p.1400-1410</ispartof><rights>2015 INIST-CNRS</rights><rights>Copyright The Institute of Electrical and Electronics Engineers, Inc. (IEEE) May 2011</rights><rights>Distributed under a Creative Commons Attribution 4.0 International License</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c403t-d180eb2973db650a81ab0f23f39601bbb8e42453f3f7ba1257d76696a45326783</citedby><cites>FETCH-LOGICAL-c403t-d180eb2973db650a81ab0f23f39601bbb8e42453f3f7ba1257d76696a45326783</cites><orcidid>0000-0002-1141-2874 ; 0000-0003-0758-5462</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/5766672$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>230,314,780,784,796,885,27924,27925,54758</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/5766672$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=24190304$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://unilim.hal.science/hal-00649713$$DView record in HAL$$Hfree_for_read</backlink></links><search><creatorcontrib>Sahuguede, S</creatorcontrib><creatorcontrib>Julien-Vergonjanne, A</creatorcontrib><creatorcontrib>Cances, J P</creatorcontrib><title>Beat Noise Compensation in OCDMA Systems Using Soft Decoding Based FEC</title><title>IEEE transactions on communications</title><addtitle>TCOMM</addtitle><description>In this paper we study Forward Error Correction (FEC) under beat noise assumption in the context of incoherent Optical Code Division Multiple Access (OCDMA) systems. Due to the use of unipolar codes, Multiple Access Interference (MAI) amount and thus beatings between different user contributions known as beat noise, constitute important limitations in particular for high data rates. In order to compensate for these two major limitations, we propose a solution using FEC based on a soft decoding algorithm. For this purpose, we analyze the OCDMA received signal distribution and establish a new model, based on a mixture of chi-square distributions, valuable for any OCDMA code parameters and any source coherence time values. From this model, we establish the error probability analytical expression under beat noise assumption and determine the reliability parameters required for the FEC soft decoder initialization. To illustrate the performance, we use Low Density Parity Check (LDPC) codes and show that the LDPC adapted decoder is highly efficient in reducing beat noise and MAI for incoherent OCDMA systems, even when beat noise has a severe impact. In addition, we point out that this solution permits increasing data rates or number of active users.</description><subject>Adaptive optics</subject><subject>Applied sciences</subject><subject>beat noise</subject><subject>Code Division Multiple Access</subject><subject>Coding, codes</subject><subject>Decoders</subject><subject>Decoding</subject><subject>Density</subject><subject>Detection, estimation, filtering, equalization, prediction</subject><subject>Exact sciences and technology</subject><subject>Exact solutions</subject><subject>Forward error correction</subject><subject>incoherent/coherent optical regime</subject><subject>Information, signal and communications theory</subject><subject>Interference</subject><subject>low density parity check codes</subject><subject>Mathematical analysis</subject><subject>Mathematical models</subject><subject>Multiple access</subject><subject>multiple access interference</subject><subject>Noise</subject><subject>Optical fiber communications</subject><subject>Optical networks</subject><subject>Optical noise</subject><subject>Optical receivers</subject><subject>Optical telecommunications</subject><subject>Signal and communications theory</subject><subject>Signal, noise</subject><subject>Studies</subject><subject>Systems, networks and services of telecommunications</subject><subject>Telecommunications</subject><subject>Telecommunications and information theory</subject><subject>Transmission and modulation (techniques and equipments)</subject><issn>0090-6778</issn><issn>1558-0857</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNpdkT1v2zAQQImgBeqm-QVdiAIF2kHOHSnxY3SUuAlgx0OSmaAkKmUgi64oB8i_L1UFHrqQuOO7O5KPEIqwRAR9-VjuttslA8Ql5GnFJQKg1mdkgUWhMlCF_EAWABoyIaX6RD7H-AKQYM4XZH3l7Ejvg4-OlmF_cH20ow899T3dldfbFX14i6PbR_oUff9MH0I70mtXh2aKrmx0DV3flF_Ix9Z20V287-fkaX3zWN5mm92vu3K1yeo0bswaVOAqpiVvKlGAVWgraBlvuRaAVVUpl7O8SHErK4uskI0UQgubckxIxc_Jz7nvb9uZw-D3dngzwXpzu9qYKQcgci2Rv2Jif8zsYQh_ji6OZu9j7brO9i4co0GROMUQ84R--w99CcehTy8xSgiuAdkEqRmqhxDj4NrTBRDM5ML8c2EmF2Z2YWYXqfT7e38ba9u1g-1rH0_1LEcNHKYRX2fOO-dOx0X6AyEZ_wvqpo3i</recordid><startdate>20110501</startdate><enddate>20110501</enddate><creator>Sahuguede, S</creator><creator>Julien-Vergonjanne, A</creator><creator>Cances, J P</creator><general>IEEE</general><general>Institute of Electrical and Electronics Engineers</general><general>The Institute of Electrical and Electronics Engineers, Inc. (IEEE)</general><scope>97E</scope><scope>RIA</scope><scope>RIE</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>8FD</scope><scope>L7M</scope><scope>F28</scope><scope>FR3</scope><scope>1XC</scope><orcidid>https://orcid.org/0000-0002-1141-2874</orcidid><orcidid>https://orcid.org/0000-0003-0758-5462</orcidid></search><sort><creationdate>20110501</creationdate><title>Beat Noise Compensation in OCDMA Systems Using Soft Decoding Based FEC</title><author>Sahuguede, S ; Julien-Vergonjanne, A ; Cances, J P</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c403t-d180eb2973db650a81ab0f23f39601bbb8e42453f3f7ba1257d76696a45326783</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><topic>Adaptive optics</topic><topic>Applied sciences</topic><topic>beat noise</topic><topic>Code Division Multiple Access</topic><topic>Coding, codes</topic><topic>Decoders</topic><topic>Decoding</topic><topic>Density</topic><topic>Detection, estimation, filtering, equalization, prediction</topic><topic>Exact sciences and technology</topic><topic>Exact solutions</topic><topic>Forward error correction</topic><topic>incoherent/coherent optical regime</topic><topic>Information, signal and communications theory</topic><topic>Interference</topic><topic>low density parity check codes</topic><topic>Mathematical analysis</topic><topic>Mathematical models</topic><topic>Multiple access</topic><topic>multiple access interference</topic><topic>Noise</topic><topic>Optical fiber communications</topic><topic>Optical networks</topic><topic>Optical noise</topic><topic>Optical receivers</topic><topic>Optical telecommunications</topic><topic>Signal and communications theory</topic><topic>Signal, noise</topic><topic>Studies</topic><topic>Systems, networks and services of telecommunications</topic><topic>Telecommunications</topic><topic>Telecommunications and information theory</topic><topic>Transmission and modulation (techniques and equipments)</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Sahuguede, S</creatorcontrib><creatorcontrib>Julien-Vergonjanne, A</creatorcontrib><creatorcontrib>Cances, J P</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>Pascal-Francis</collection><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>ANTE: Abstracts in New Technology & Engineering</collection><collection>Engineering Research Database</collection><collection>Hyper Article en Ligne (HAL)</collection><jtitle>IEEE transactions on communications</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Sahuguede, S</au><au>Julien-Vergonjanne, A</au><au>Cances, J P</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Beat Noise Compensation in OCDMA Systems Using Soft Decoding Based FEC</atitle><jtitle>IEEE transactions on communications</jtitle><stitle>TCOMM</stitle><date>2011-05-01</date><risdate>2011</risdate><volume>59</volume><issue>5</issue><spage>1400</spage><epage>1410</epage><pages>1400-1410</pages><issn>0090-6778</issn><eissn>1558-0857</eissn><coden>IECMBT</coden><abstract>In this paper we study Forward Error Correction (FEC) under beat noise assumption in the context of incoherent Optical Code Division Multiple Access (OCDMA) systems. Due to the use of unipolar codes, Multiple Access Interference (MAI) amount and thus beatings between different user contributions known as beat noise, constitute important limitations in particular for high data rates. In order to compensate for these two major limitations, we propose a solution using FEC based on a soft decoding algorithm. For this purpose, we analyze the OCDMA received signal distribution and establish a new model, based on a mixture of chi-square distributions, valuable for any OCDMA code parameters and any source coherence time values. From this model, we establish the error probability analytical expression under beat noise assumption and determine the reliability parameters required for the FEC soft decoder initialization. To illustrate the performance, we use Low Density Parity Check (LDPC) codes and show that the LDPC adapted decoder is highly efficient in reducing beat noise and MAI for incoherent OCDMA systems, even when beat noise has a severe impact. 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| subjects | Adaptive optics Applied sciences beat noise Code Division Multiple Access Coding, codes Decoders Decoding Density Detection, estimation, filtering, equalization, prediction Exact sciences and technology Exact solutions Forward error correction incoherent/coherent optical regime Information, signal and communications theory Interference low density parity check codes Mathematical analysis Mathematical models Multiple access multiple access interference Noise Optical fiber communications Optical networks Optical noise Optical receivers Optical telecommunications Signal and communications theory Signal, noise Studies Systems, networks and services of telecommunications Telecommunications Telecommunications and information theory Transmission and modulation (techniques and equipments) |
| title | Beat Noise Compensation in OCDMA Systems Using Soft Decoding Based FEC |
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