An ARQ mechanism considering resource and traffic priorities in cognitive radio systems

In multi-hop relaying systems that have many relay stations (RSs), a cognitive radio (CR) technique can improve system performance greatly, due to an efficient resource sharing between the RSs. In this letter, the performance of an ARQ mechanism for CR-based multi-hop relaying systems is studied, us...

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Veröffentlicht in:	IEEE communications letters 2009-07, Vol.13 (7), p.504-506
Hauptverfasser:	JEON, Soo-Yong, CHO, Dong-Ho
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences ARQ Automatic repeat request Chromium Cognitive radio Degradation Exact sciences and technology Flow graphs multi-hop Performance degradation Radio Radiocommunication specific techniques Radiocommunications Relaying Relays Reliability Resource allocation Resource management Roads Signal flow graphs System performance Systems, networks and services of telecommunications Telecommunications Telecommunications and information theory Teletraffic Traffic engineering Traffic flow
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Zusammenfassung:	In multi-hop relaying systems that have many relay stations (RSs), a cognitive radio (CR) technique can improve system performance greatly, due to an efficient resource sharing between the RSs. In this letter, the performance of an ARQ mechanism for CR-based multi-hop relaying systems is studied, using Markov chain and matrix signal flow graph (MSFG) techniques. Also, a priority-based resource allocation scheme is proposed to prevent performance degradation caused by the usage of unstable resources acquired by the CR technique.
ISSN:	1089-7798 1558-2558
DOI:	10.1109/LCOMM.2009.081941