Multiuser diffuse indoor wireless infrared communication using equalized synchronous CDMA
We propose an indoor wireless infrared downlink scheme for high-data-rate multiuser connectivity with diffuse channels. The scheme is based on synchronous code-division multiple access with unipolar Hadamard codes. The orthogonality of unipolar Hadamard codes enables multiuser operation with relativ...
Gespeichert in:
| Veröffentlicht in: | IEEE transactions on communications 2006-09, Vol.54 (9), p.1654-1662 |
|---|---|
| Hauptverfasser: | , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext bestellen |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | 1662 |
|---|---|
| container_issue | 9 |
| container_start_page | 1654 |
| container_title | IEEE transactions on communications |
| container_volume | 54 |
| creator | Griner, U.N. Arnon, S. |
| description | We propose an indoor wireless infrared downlink scheme for high-data-rate multiuser connectivity with diffuse channels. The scheme is based on synchronous code-division multiple access with unipolar Hadamard codes. The orthogonality of unipolar Hadamard codes enables multiuser operation with relatively short codes. Thus, practical downlink rates of tens of Mb/s for each user can be obtained. However, multipath reflections in diffuse channels cause strong multipath dispersion and, consequently, severe distortion. This distortion becomes even more severe in a multiuser environment, as the dispersed incoherent infrared radiation of all users aggregates together. To mitigate this distortion, we use a novel adaptive multilevel serial composite decision feedback and feedforward equalizer. We investigate the system's performance with the proposed equalizer, and compare it with the performance of the same system, both composite decision-feedback and feedforward equalizers, and with a conventional decision-feedback equalizer (DFE). Our results show that the proposed scheme enables a high-data-rate multiaccess link and eliminates most of the multiuser distortion. Furthermore, it improves system performance in a multiaccess environment, as compared with the other composite equalizers and DFE for the same complexity. We also compare other coding schemes, and show that Hadamard codes are on top of the other codes |
| doi_str_mv | 10.1109/TCOMM.2006.881247 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_RIE</sourceid><recordid>TN_cdi_crossref_primary_10_1109_TCOMM_2006_881247</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><ieee_id>1703823</ieee_id><sourcerecordid>2341202981</sourcerecordid><originalsourceid>FETCH-LOGICAL-c354t-d14e21e70b134196a904241a1f568e010fd767528611de72a0e13242062346ec3</originalsourceid><addsrcrecordid>eNpdkEFLHTEQx4Mo-LT9ANLLIkhP-zqTZJPsUZ5VCz682ENPIc3O2si-RJO3FPvpjT5B6GlmmN8Mf36MnSAsEaH_dre6Xa-XHEAtjUEu9R5bYNeZFkyn99kCoIdWaW0O2VEpDwAgQYgF-7Wep22YC-VmCONYmybEIaXc_A2ZJiqlzmN2mYbGp81mjsG7bUixmUuI9w09zW4K_-q2PEf_J6eY5tKsLtbnn9jB6KZCn9_rMft5-f1udd3e3F79WJ3ftF50ctsOKIkjafiNQmKvXA-SS3Q4dsoQIIyDVrrjRiEOpLkDQsElB8WFVOTFMfu6-_uY09NMZWs3oXiaJhepZrHG9BJRGazk6X_kQ5pzrOGsUZ2QAjpVIdxBPqdSMo32MYeNy88Wwb6qtm-q7atqu1Ndb87eH7vi3VR1RR_Kx6FBqYH3lfuy4wIRfaw1CMOFeAFT-IaV</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>865343056</pqid></control><display><type>article</type><title>Multiuser diffuse indoor wireless infrared communication using equalized synchronous CDMA</title><source>IEEE Electronic Library (IEL)</source><creator>Griner, U.N. ; Arnon, S.</creator><creatorcontrib>Griner, U.N. ; Arnon, S.</creatorcontrib><description>We propose an indoor wireless infrared downlink scheme for high-data-rate multiuser connectivity with diffuse channels. The scheme is based on synchronous code-division multiple access with unipolar Hadamard codes. The orthogonality of unipolar Hadamard codes enables multiuser operation with relatively short codes. Thus, practical downlink rates of tens of Mb/s for each user can be obtained. However, multipath reflections in diffuse channels cause strong multipath dispersion and, consequently, severe distortion. This distortion becomes even more severe in a multiuser environment, as the dispersed incoherent infrared radiation of all users aggregates together. To mitigate this distortion, we use a novel adaptive multilevel serial composite decision feedback and feedforward equalizer. We investigate the system's performance with the proposed equalizer, and compare it with the performance of the same system, both composite decision-feedback and feedforward equalizers, and with a conventional decision-feedback equalizer (DFE). Our results show that the proposed scheme enables a high-data-rate multiaccess link and eliminates most of the multiuser distortion. Furthermore, it improves system performance in a multiaccess environment, as compared with the other composite equalizers and DFE for the same complexity. We also compare other coding schemes, and show that Hadamard codes are on top of the other codes</description><identifier>ISSN: 0090-6778</identifier><identifier>EISSN: 1558-0857</identifier><identifier>DOI: 10.1109/TCOMM.2006.881247</identifier><identifier>CODEN: IECMBT</identifier><language>eng</language><publisher>New York, NY: IEEE</publisher><subject>Applied sciences ; Channels ; Code division multiplexing ; Codes ; Coding, codes ; Decision feedback equalizers ; decision feedforward equalizer ; Decision-feedback equalizer (DFE) ; Detection, estimation, filtering, equalization, prediction ; Diffusion ; Distortion ; Downlink ; Equalizers ; Error correcting codes ; Error correction ; Error correction codes ; Exact sciences and technology ; Feedforward ; Indoor ; indoor wireless communication ; Information, signal and communications theory ; Infrared ; infrared (IR) communication ; Multiaccess communication ; optical code-division multiple access (OCDMA) ; Optical fiber communication ; Optical telecommunications ; Reflection ; Signal and communications theory ; Signal, noise ; System performance ; Systems, networks and services of telecommunications ; Telecommunications ; Telecommunications and information theory ; Transmission and modulation (techniques and equipments) ; Wireless communication</subject><ispartof>IEEE transactions on communications, 2006-09, Vol.54 (9), p.1654-1662</ispartof><rights>2006 INIST-CNRS</rights><rights>Copyright The Institute of Electrical and Electronics Engineers, Inc. (IEEE) 2006</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c354t-d14e21e70b134196a904241a1f568e010fd767528611de72a0e13242062346ec3</citedby><cites>FETCH-LOGICAL-c354t-d14e21e70b134196a904241a1f568e010fd767528611de72a0e13242062346ec3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/1703823$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>315,782,786,798,27931,27932,54765</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/1703823$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=18147029$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Griner, U.N.</creatorcontrib><creatorcontrib>Arnon, S.</creatorcontrib><title>Multiuser diffuse indoor wireless infrared communication using equalized synchronous CDMA</title><title>IEEE transactions on communications</title><addtitle>TCOMM</addtitle><description>We propose an indoor wireless infrared downlink scheme for high-data-rate multiuser connectivity with diffuse channels. The scheme is based on synchronous code-division multiple access with unipolar Hadamard codes. The orthogonality of unipolar Hadamard codes enables multiuser operation with relatively short codes. Thus, practical downlink rates of tens of Mb/s for each user can be obtained. However, multipath reflections in diffuse channels cause strong multipath dispersion and, consequently, severe distortion. This distortion becomes even more severe in a multiuser environment, as the dispersed incoherent infrared radiation of all users aggregates together. To mitigate this distortion, we use a novel adaptive multilevel serial composite decision feedback and feedforward equalizer. We investigate the system's performance with the proposed equalizer, and compare it with the performance of the same system, both composite decision-feedback and feedforward equalizers, and with a conventional decision-feedback equalizer (DFE). Our results show that the proposed scheme enables a high-data-rate multiaccess link and eliminates most of the multiuser distortion. Furthermore, it improves system performance in a multiaccess environment, as compared with the other composite equalizers and DFE for the same complexity. We also compare other coding schemes, and show that Hadamard codes are on top of the other codes</description><subject>Applied sciences</subject><subject>Channels</subject><subject>Code division multiplexing</subject><subject>Codes</subject><subject>Coding, codes</subject><subject>Decision feedback equalizers</subject><subject>decision feedforward equalizer</subject><subject>Decision-feedback equalizer (DFE)</subject><subject>Detection, estimation, filtering, equalization, prediction</subject><subject>Diffusion</subject><subject>Distortion</subject><subject>Downlink</subject><subject>Equalizers</subject><subject>Error correcting codes</subject><subject>Error correction</subject><subject>Error correction codes</subject><subject>Exact sciences and technology</subject><subject>Feedforward</subject><subject>Indoor</subject><subject>indoor wireless communication</subject><subject>Information, signal and communications theory</subject><subject>Infrared</subject><subject>infrared (IR) communication</subject><subject>Multiaccess communication</subject><subject>optical code-division multiple access (OCDMA)</subject><subject>Optical fiber communication</subject><subject>Optical telecommunications</subject><subject>Reflection</subject><subject>Signal and communications theory</subject><subject>Signal, noise</subject><subject>System performance</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><subject>Wireless communication</subject><issn>0090-6778</issn><issn>1558-0857</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2006</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNpdkEFLHTEQx4Mo-LT9ANLLIkhP-zqTZJPsUZ5VCz682ENPIc3O2si-RJO3FPvpjT5B6GlmmN8Mf36MnSAsEaH_dre6Xa-XHEAtjUEu9R5bYNeZFkyn99kCoIdWaW0O2VEpDwAgQYgF-7Wep22YC-VmCONYmybEIaXc_A2ZJiqlzmN2mYbGp81mjsG7bUixmUuI9w09zW4K_-q2PEf_J6eY5tKsLtbnn9jB6KZCn9_rMft5-f1udd3e3F79WJ3ftF50ctsOKIkjafiNQmKvXA-SS3Q4dsoQIIyDVrrjRiEOpLkDQsElB8WFVOTFMfu6-_uY09NMZWs3oXiaJhepZrHG9BJRGazk6X_kQ5pzrOGsUZ2QAjpVIdxBPqdSMo32MYeNy88Wwb6qtm-q7atqu1Ndb87eH7vi3VR1RR_Kx6FBqYH3lfuy4wIRfaw1CMOFeAFT-IaV</recordid><startdate>20060901</startdate><enddate>20060901</enddate><creator>Griner, U.N.</creator><creator>Arnon, S.</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></search><sort><creationdate>20060901</creationdate><title>Multiuser diffuse indoor wireless infrared communication using equalized synchronous CDMA</title><author>Griner, U.N. ; Arnon, S.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c354t-d14e21e70b134196a904241a1f568e010fd767528611de72a0e13242062346ec3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2006</creationdate><topic>Applied sciences</topic><topic>Channels</topic><topic>Code division multiplexing</topic><topic>Codes</topic><topic>Coding, codes</topic><topic>Decision feedback equalizers</topic><topic>decision feedforward equalizer</topic><topic>Decision-feedback equalizer (DFE)</topic><topic>Detection, estimation, filtering, equalization, prediction</topic><topic>Diffusion</topic><topic>Distortion</topic><topic>Downlink</topic><topic>Equalizers</topic><topic>Error correcting codes</topic><topic>Error correction</topic><topic>Error correction codes</topic><topic>Exact sciences and technology</topic><topic>Feedforward</topic><topic>Indoor</topic><topic>indoor wireless communication</topic><topic>Information, signal and communications theory</topic><topic>Infrared</topic><topic>infrared (IR) communication</topic><topic>Multiaccess communication</topic><topic>optical code-division multiple access (OCDMA)</topic><topic>Optical fiber communication</topic><topic>Optical telecommunications</topic><topic>Reflection</topic><topic>Signal and communications theory</topic><topic>Signal, noise</topic><topic>System performance</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><topic>Wireless communication</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Griner, U.N.</creatorcontrib><creatorcontrib>Arnon, S.</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><jtitle>IEEE transactions on communications</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Griner, U.N.</au><au>Arnon, S.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Multiuser diffuse indoor wireless infrared communication using equalized synchronous CDMA</atitle><jtitle>IEEE transactions on communications</jtitle><stitle>TCOMM</stitle><date>2006-09-01</date><risdate>2006</risdate><volume>54</volume><issue>9</issue><spage>1654</spage><epage>1662</epage><pages>1654-1662</pages><issn>0090-6778</issn><eissn>1558-0857</eissn><coden>IECMBT</coden><abstract>We propose an indoor wireless infrared downlink scheme for high-data-rate multiuser connectivity with diffuse channels. The scheme is based on synchronous code-division multiple access with unipolar Hadamard codes. The orthogonality of unipolar Hadamard codes enables multiuser operation with relatively short codes. Thus, practical downlink rates of tens of Mb/s for each user can be obtained. However, multipath reflections in diffuse channels cause strong multipath dispersion and, consequently, severe distortion. This distortion becomes even more severe in a multiuser environment, as the dispersed incoherent infrared radiation of all users aggregates together. To mitigate this distortion, we use a novel adaptive multilevel serial composite decision feedback and feedforward equalizer. We investigate the system's performance with the proposed equalizer, and compare it with the performance of the same system, both composite decision-feedback and feedforward equalizers, and with a conventional decision-feedback equalizer (DFE). Our results show that the proposed scheme enables a high-data-rate multiaccess link and eliminates most of the multiuser distortion. Furthermore, it improves system performance in a multiaccess environment, as compared with the other composite equalizers and DFE for the same complexity. We also compare other coding schemes, and show that Hadamard codes are on top of the other codes</abstract><cop>New York, NY</cop><pub>IEEE</pub><doi>10.1109/TCOMM.2006.881247</doi><tpages>9</tpages></addata></record> |
| fulltext | fulltext_linktorsrc |
| identifier | ISSN: 0090-6778 |
| ispartof | IEEE transactions on communications, 2006-09, Vol.54 (9), p.1654-1662 |
| issn | 0090-6778 1558-0857 |
| language | eng |
| recordid | cdi_crossref_primary_10_1109_TCOMM_2006_881247 |
| source | IEEE Electronic Library (IEL) |
| subjects | Applied sciences Channels Code division multiplexing Codes Coding, codes Decision feedback equalizers decision feedforward equalizer Decision-feedback equalizer (DFE) Detection, estimation, filtering, equalization, prediction Diffusion Distortion Downlink Equalizers Error correcting codes Error correction Error correction codes Exact sciences and technology Feedforward Indoor indoor wireless communication Information, signal and communications theory Infrared infrared (IR) communication Multiaccess communication optical code-division multiple access (OCDMA) Optical fiber communication Optical telecommunications Reflection Signal and communications theory Signal, noise System performance Systems, networks and services of telecommunications Telecommunications Telecommunications and information theory Transmission and modulation (techniques and equipments) Wireless communication |
| title | Multiuser diffuse indoor wireless infrared communication using equalized synchronous CDMA |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2024-12-04T05%3A37%3A19IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_RIE&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Multiuser%20diffuse%20indoor%20wireless%20infrared%20communication%20using%20equalized%20synchronous%20CDMA&rft.jtitle=IEEE%20transactions%20on%20communications&rft.au=Griner,%20U.N.&rft.date=2006-09-01&rft.volume=54&rft.issue=9&rft.spage=1654&rft.epage=1662&rft.pages=1654-1662&rft.issn=0090-6778&rft.eissn=1558-0857&rft.coden=IECMBT&rft_id=info:doi/10.1109/TCOMM.2006.881247&rft_dat=%3Cproquest_RIE%3E2341202981%3C/proquest_RIE%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=865343056&rft_id=info:pmid/&rft_ieee_id=1703823&rfr_iscdi=true |