DocumentCode :
3203987
Title :
Performance Analysis of CSMA in an Unslotted Cognitive Radio Network under Non-saturation Condition
Author :
Dong Bi Zhu ; Hui-Min Wang ; Yi-Nan Xu
Author_Institution :
Dept. of Electron. & Commun. Eng., YanBian Univ., Yanji, China
fYear :
2012
fDate :
8-10 Dec. 2012
Firstpage :
1122
Lastpage :
1126
Abstract :
The performance of carrier sense multiple access (CSMA) in an unslotted multi-channel cognitive radio network under non-saturation condition is studied. In this system, every secondary user in idle state generates a new file after exponential distributed time and randomly generates a file which consists of geometrically distributed number of packets. We model the above described unslotted cognitive radio network by retrial queueing system with 3-dimensional continuous time markov chain(CTMC) and obtain the steady state probability of the CTMC using matrix analytic method. We obtain performance measures such as the throughput of SUs and the loss probability of SUs. Numerical results show that the file size and the file generation rate of SUs impact on the performance of CSMA under non-saturation condition significantly.
Keywords :
Markov processes; carrier sense multiple access; cognitive radio; CSMA; SUs impact; carrier sense multiple access; continuous time Markov chain; exponential distributed time; non-saturation condition; nonsaturation condition; performance analysis; unslotted cognitive radio network; unslotted multichannel cognitive radio network; Cognitive radio; Loss measurement; Markov processes; Multiaccess communication; Radio networks; Steady-state; Throughput; Backoff time; CSMA; Cognitive Radio Network; Non-saturation condition; Throughput;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Instrumentation, Measurement, Computer, Communication and Control (IMCCC), 2012 Second International Conference on
Conference_Location :
Harbin
Print_ISBN :
978-1-4673-5034-1
Type :
conf
DOI :
10.1109/IMCCC.2012.264
Filename :
6429100
Link To Document :
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