Performance Analysis of Opportunistic Spectrum Access Protocol for Multi-Channel Cognitive Radio Networks

Title
Performance Analysis of Opportunistic Spectrum Access Protocol for Multi-Channel Cognitive Radio Networks
Authors
곽경섭
Keywords
Access delay, Markov chain, multi-channel cognitive radio network, opportunistic spectrum access, throughput
Issue Date
2013
Publisher
JOURNAL OF COMMUNICATIONS AND NETWORKS
Series/Report no.
JOURNAL OF COMMUNICATIONS AND NETWORKS ; Vol15 no.1 Startpage 77 Endpage 86
Abstract
Cognitive radio (CR) has emerged as one of effective methods to enhance the utilization of existing radio spectrum. Main principle of CR is that secondary users (SUs) are allowed to use the spectrum unused by primary users (PUs) without interfering PU’s transmissions. In this paper, PUs operate on a slot-by-slot basis and SUs try to exploit the slots unused by PUs. We propose OSA protocols in the single channel and we propose an opportunistic spectrum access (OSA) protocols in the multi-channel cognitive radio networks with one control channel and several licensed channels where a slot is divided into contention phase and transmission phase. A slot is divided into reporting phase, contention phase and transmission phase. The reporting phase plays a role of finding idle channels unused by PUs and the contention phase plays a role of selecting a SU who will send packets in the data transmission phase. One SU is selected by carrier sense multiple access / collision avoidance (CSMA/CA) wit
URI
http://dspace.inha.ac.kr/handle/10505/33464
ISSN
1229-2370
Appears in Collections:
College of Engineering(공과대학) > Information and Communication Engineering (정보통신공학) > Journal Papers, Reports(정보통신공학 논문, 보고서)
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