Capacity of Reactive DF Scheme in Cognitive Relay Networks
This paper evaluates the capacity of the reactive decode-and-forward (R-DF) scheme, which considers the reduced relay candidates based on the signal-to-noise ratio (SNR) of the source-relay link for relay selection in underlay cognitive relay networks. The performance of R-DF scheme is compared with...
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| Veröffentlicht in: | IEEE transactions on wireless communications 2011-10, Vol.10 (10), p.3133-3138 |
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| creator | SAGONG, Sanguk LEE, Jemin HONG, Daesik |
| description | This paper evaluates the capacity of the reactive decode-and-forward (R-DF) scheme, which considers the reduced relay candidates based on the signal-to-noise ratio (SNR) of the source-relay link for relay selection in underlay cognitive relay networks. The performance of R-DF scheme is compared with that of the proactive DF (P-DF) scheme. It has been proven that R-DF scheme achieves the similar capacity of P-DF scheme as the primary receiver is located further from the secondary source. Since the transmission power of a secondary user is constrained by the location of the primary receiver, the performance of a cognitive relay network varies depending on the considered link for determining the relay candidates, between the source-relay and the relay-destination links. Hence, we also analyze the performance of the backward R-DF (BR-DF) scheme which the relay candidates are determined based on the relay-destination link. It is also verified that the performance of BR-DF scheme is better than that of R-DF scheme when the primary receiver is located close to the secondary source. |
| doi_str_mv | 10.1109/TWC.2011.081011.101849 |
| format | Article |
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The performance of R-DF scheme is compared with that of the proactive DF (P-DF) scheme. It has been proven that R-DF scheme achieves the similar capacity of P-DF scheme as the primary receiver is located further from the secondary source. Since the transmission power of a secondary user is constrained by the location of the primary receiver, the performance of a cognitive relay network varies depending on the considered link for determining the relay candidates, between the source-relay and the relay-destination links. Hence, we also analyze the performance of the backward R-DF (BR-DF) scheme which the relay candidates are determined based on the relay-destination link. It is also verified that the performance of BR-DF scheme is better than that of R-DF scheme when the primary receiver is located close to the secondary source.</description><identifier>ISSN: 1536-1276</identifier><identifier>EISSN: 1558-2248</identifier><identifier>DOI: 10.1109/TWC.2011.081011.101849</identifier><identifier>CODEN: ITWCAX</identifier><language>eng</language><publisher>New York, NY: IEEE</publisher><subject>Access methods and protocols, osi model ; Applied sciences ; Cognitive radio ; Constraints ; cooperative diversity ; Exact sciences and technology ; Interference ; Links ; Position (location) ; Radiocommunication specific techniques ; Radiocommunications ; Random variables ; reactive DF scheme ; Receivers ; Relay ; Relay networks ; Relays ; Signal to noise ratio ; Telecommunications ; Telecommunications and information theory ; Teleprocessing networks. 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The performance of R-DF scheme is compared with that of the proactive DF (P-DF) scheme. It has been proven that R-DF scheme achieves the similar capacity of P-DF scheme as the primary receiver is located further from the secondary source. Since the transmission power of a secondary user is constrained by the location of the primary receiver, the performance of a cognitive relay network varies depending on the considered link for determining the relay candidates, between the source-relay and the relay-destination links. Hence, we also analyze the performance of the backward R-DF (BR-DF) scheme which the relay candidates are determined based on the relay-destination link. It is also verified that the performance of BR-DF scheme is better than that of R-DF scheme when the primary receiver is located close to the secondary source.</description><subject>Access methods and protocols, osi model</subject><subject>Applied sciences</subject><subject>Cognitive radio</subject><subject>Constraints</subject><subject>cooperative diversity</subject><subject>Exact sciences and technology</subject><subject>Interference</subject><subject>Links</subject><subject>Position (location)</subject><subject>Radiocommunication specific techniques</subject><subject>Radiocommunications</subject><subject>Random variables</subject><subject>reactive DF scheme</subject><subject>Receivers</subject><subject>Relay</subject><subject>Relay networks</subject><subject>Relays</subject><subject>Signal to noise ratio</subject><subject>Telecommunications</subject><subject>Telecommunications and information theory</subject><subject>Teleprocessing networks. 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Isdn</topic><topic>Wireless communication</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>SAGONG, Sanguk</creatorcontrib><creatorcontrib>LEE, Jemin</creatorcontrib><creatorcontrib>HONG, Daesik</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>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>SAGONG, Sanguk</au><au>LEE, Jemin</au><au>HONG, Daesik</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Capacity of Reactive DF Scheme in Cognitive Relay Networks</atitle><jtitle>IEEE transactions on wireless communications</jtitle><stitle>TWC</stitle><date>2011-10-01</date><risdate>2011</risdate><volume>10</volume><issue>10</issue><spage>3133</spage><epage>3138</epage><pages>3133-3138</pages><issn>1536-1276</issn><eissn>1558-2248</eissn><coden>ITWCAX</coden><abstract>This paper evaluates the capacity of the reactive decode-and-forward (R-DF) scheme, which considers the reduced relay candidates based on the signal-to-noise ratio (SNR) of the source-relay link for relay selection in underlay cognitive relay networks. The performance of R-DF scheme is compared with that of the proactive DF (P-DF) scheme. It has been proven that R-DF scheme achieves the similar capacity of P-DF scheme as the primary receiver is located further from the secondary source. Since the transmission power of a secondary user is constrained by the location of the primary receiver, the performance of a cognitive relay network varies depending on the considered link for determining the relay candidates, between the source-relay and the relay-destination links. Hence, we also analyze the performance of the backward R-DF (BR-DF) scheme which the relay candidates are determined based on the relay-destination link. It is also verified that the performance of BR-DF scheme is better than that of R-DF scheme when the primary receiver is located close to the secondary source.</abstract><cop>New York, NY</cop><pub>IEEE</pub><doi>10.1109/TWC.2011.081011.101849</doi><tpages>6</tpages></addata></record> |
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| subjects | Access methods and protocols, osi model Applied sciences Cognitive radio Constraints cooperative diversity Exact sciences and technology Interference Links Position (location) Radiocommunication specific techniques Radiocommunications Random variables reactive DF scheme Receivers Relay Relay networks Relays Signal to noise ratio Telecommunications Telecommunications and information theory Teleprocessing networks. Isdn Wireless communication |
| title | Capacity of Reactive DF Scheme in Cognitive Relay Networks |
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