Opportunistic relay selection with outdated CSI: outage probability and diversity analysis
In this paper, we analyze the outage probability and diversity order of opportunistic relay selection in a scenario based on decode and forward and where the available channel state information (CSI) is outdated. The study is conducted analytically by obtaining a closed-form expression for the outag...
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| Veröffentlicht in: | IEEE transactions on wireless communications 2009-06, Vol.8 (6), p.2872-2876 |
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| creator | Vicario, J.L. Bel, A. Lopez-Salcedo, J.A. Seco, G. |
| description | In this paper, we analyze the outage probability and diversity order of opportunistic relay selection in a scenario based on decode and forward and where the available channel state information (CSI) is outdated. The study is conducted analytically by obtaining a closed-form expression for the outage probability, which is defined as the probability that the instantaneous capacity is below a target value. We derive high-SNR approximations for the outage probability. By doing so, we demonstrate that the diversity order of the system is reduced to 1 when CSI is outdated, being this behavior independent of the level of CSI accuracy. A physical explanation for this extreme loss of diversity is provided along with numerical results to support the analytical study. |
| doi_str_mv | 10.1109/TWC.2009.081561 |
| format | Article |
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The study is conducted analytically by obtaining a closed-form expression for the outage probability, which is defined as the probability that the instantaneous capacity is below a target value. We derive high-SNR approximations for the outage probability. By doing so, we demonstrate that the diversity order of the system is reduced to 1 when CSI is outdated, being this behavior independent of the level of CSI accuracy. A physical explanation for this extreme loss of diversity is provided along with numerical results to support the analytical study.</description><identifier>ISSN: 1536-1276</identifier><identifier>EISSN: 1558-2248</identifier><identifier>DOI: 10.1109/TWC.2009.081561</identifier><identifier>CODEN: ITWCAX</identifier><language>eng</language><publisher>New York, NY: IEEE</publisher><subject>Access methods and protocols, osi model ; Applied sciences ; Approximation ; Capacity planning ; Channel state information ; Channels ; Closed-form solution ; Cooperative communications ; Decoding ; Detection, estimation, filtering, equalization, prediction ; diversity gain ; Diversity methods ; Exact sciences and technology ; Exact solutions ; Extreme values ; Information analysis ; Information, signal and communications theory ; Mathematical analysis ; MIMO ; opportunistic relay selection ; Outages ; outdated CSI ; Power system relaying ; Relay ; Relays ; Signal and communications theory ; Signal, noise ; System performance ; Systems, networks and services of telecommunications ; Telecommunications ; Telecommunications and information theory ; Teleprocessing networks. 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The study is conducted analytically by obtaining a closed-form expression for the outage probability, which is defined as the probability that the instantaneous capacity is below a target value. We derive high-SNR approximations for the outage probability. By doing so, we demonstrate that the diversity order of the system is reduced to 1 when CSI is outdated, being this behavior independent of the level of CSI accuracy. A physical explanation for this extreme loss of diversity is provided along with numerical results to support the analytical study.</description><subject>Access methods and protocols, osi model</subject><subject>Applied sciences</subject><subject>Approximation</subject><subject>Capacity planning</subject><subject>Channel state information</subject><subject>Channels</subject><subject>Closed-form solution</subject><subject>Cooperative communications</subject><subject>Decoding</subject><subject>Detection, estimation, filtering, equalization, prediction</subject><subject>diversity gain</subject><subject>Diversity methods</subject><subject>Exact sciences and technology</subject><subject>Exact solutions</subject><subject>Extreme values</subject><subject>Information analysis</subject><subject>Information, signal and communications theory</subject><subject>Mathematical analysis</subject><subject>MIMO</subject><subject>opportunistic relay selection</subject><subject>Outages</subject><subject>outdated CSI</subject><subject>Power system relaying</subject><subject>Relay</subject><subject>Relays</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>Teleprocessing networks. Isdn</subject><subject>Transmission and modulation (techniques and equipments)</subject><subject>Wireless communication</subject><issn>1536-1276</issn><issn>1558-2248</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2009</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNpdkM9LwzAUx4soOKdnD16KIJ66vSRtfniT4o_BYAcHgpeSpqlmdO1MUmX_vSkdO3h675HP9_tevlF0jWCGEIj5-j2fYQAxA44yik6iCcoynmCc8tOhJzRBmNHz6MK5DQBiNMsm0cdqt-us71vjvFGx1Y3cx043WnnTtfGv8V9x1_tKel3F-dviYZjkp453titlaRrj97Fsq7gyP9q6cZLN3hl3GZ3VsnH66lCn0fr5aZ2_JsvVyyJ_XCaKCOQTpqpaYKII1QxXQkoOnDPOoQTBUlamumaQAaVligQFgXFNSsBBSxEoRKbR_WgbLvrutfPF1jilm0a2uutdwVkGOOA8kLf_yE3X23BtgIIXJSgd7OYjpGznnNV1sbNmK-2-QFAMQRch6GIIuhiDDoq7g610Sja1la0y7ijDiJPwk2H9zcgZrfXxOQMuBGXkDzpvhYo</recordid><startdate>20090601</startdate><enddate>20090601</enddate><creator>Vicario, J.L.</creator><creator>Bel, A.</creator><creator>Lopez-Salcedo, J.A.</creator><creator>Seco, G.</creator><general>IEEE</general><general>Institute of Electrical and Electronics Engineers</general><general>The Institute of Electrical and Electronics Engineers, Inc. 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Isdn</topic><topic>Transmission and modulation (techniques and equipments)</topic><topic>Wireless communication</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Vicario, J.L.</creatorcontrib><creatorcontrib>Bel, A.</creatorcontrib><creatorcontrib>Lopez-Salcedo, J.A.</creatorcontrib><creatorcontrib>Seco, G.</creatorcontrib><collection>IEEE All-Society Periodicals Package (ASPP) 2005-present</collection><collection>IEEE All-Society Periodicals Package (ASPP) Online</collection><collection>IEEE Electronic Library Online</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Computer and Information Systems Abstracts</collection><collection>Electronics & Communications Abstracts</collection><collection>Technology Research Database</collection><collection>ProQuest Computer Science Collection</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Computer and Information Systems Abstracts Academic</collection><collection>Computer and Information Systems Abstracts Professional</collection><collection>ANTE: Abstracts in New Technology & Engineering</collection><collection>Engineering Research Database</collection><jtitle>IEEE transactions on wireless communications</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Vicario, J.L.</au><au>Bel, A.</au><au>Lopez-Salcedo, J.A.</au><au>Seco, G.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Opportunistic relay selection with outdated CSI: outage probability and diversity analysis</atitle><jtitle>IEEE transactions on wireless communications</jtitle><stitle>TWC</stitle><date>2009-06-01</date><risdate>2009</risdate><volume>8</volume><issue>6</issue><spage>2872</spage><epage>2876</epage><pages>2872-2876</pages><issn>1536-1276</issn><eissn>1558-2248</eissn><coden>ITWCAX</coden><abstract>In this paper, we analyze the outage probability and diversity order of opportunistic relay selection in a scenario based on decode and forward and where the available channel state information (CSI) is outdated. The study is conducted analytically by obtaining a closed-form expression for the outage probability, which is defined as the probability that the instantaneous capacity is below a target value. We derive high-SNR approximations for the outage probability. By doing so, we demonstrate that the diversity order of the system is reduced to 1 when CSI is outdated, being this behavior independent of the level of CSI accuracy. A physical explanation for this extreme loss of diversity is provided along with numerical results to support the analytical study.</abstract><cop>New York, NY</cop><pub>IEEE</pub><doi>10.1109/TWC.2009.081561</doi><tpages>5</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | Access methods and protocols, osi model Applied sciences Approximation Capacity planning Channel state information Channels Closed-form solution Cooperative communications Decoding Detection, estimation, filtering, equalization, prediction diversity gain Diversity methods Exact sciences and technology Exact solutions Extreme values Information analysis Information, signal and communications theory Mathematical analysis MIMO opportunistic relay selection Outages outdated CSI Power system relaying Relay Relays Signal and communications theory Signal, noise System performance Systems, networks and services of telecommunications Telecommunications Telecommunications and information theory Teleprocessing networks. Isdn Transmission and modulation (techniques and equipments) Wireless communication |
| title | Opportunistic relay selection with outdated CSI: outage probability and diversity analysis |
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