Opportunistic channel selection approach under collision probability constraint in cognitive radio systems | |
Xiao, Qinghai ; Li, Yunzhou ; Zhao, Ming ; Zhou, Shidong ; Wang, Jing | |
2010-10-12 ; 2010-10-12 | |
关键词 | Opportunistic channel selection Collision probability Collision tolerable level Collision rate Handoff rate Computer Science, Information Systems Engineering, Electrical & Electronic Telecommunications |
中文摘要 | In this work, we consider a cognitive radio system with multiple primary channels and one secondary user, and then we introduce a channel-usage pattern model and some basic concepts in this system. Based on this system model and the basic concepts, we propose two Opportunistic channel selection algorithms to optimize the throughput of the secondary user: minimum collision rate channel selection algorithm and minimum handoff rate channel selection algorithm. According to the two algorithms, we, respectively, present the channel selection scheme based on minimum collision rate algorithm (CSS-MCRA) and the channel selection scheme based on minimum handoff rate algorithm (CSS-MHRA) under the constraint that the collision probability is bounded below collision tolerable level. Theoretical analysis and simulation results both show that, on one hand, both CSS-MCRA scheme and CSS-MHRA can follow the constraint of collision tolerable level; on the other hand, the performance of CSS-MCRA scheme is better than that of CSS-MHRA scheme if handoff latency is zero or very low, while the performance of CSS-MHRA scheme is better than that of CSS-MCRA scheme if handoff latency is long enough. (C) 2009 Elsevier B.V. All rights reserved. |
语种 | 英语 ; 英语 |
出版者 | ELSEVIER SCIENCE BV ; AMSTERDAM ; PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS |
内容类型 | 期刊论文 |
源URL | [http://hdl.handle.net/123456789/82642] ![]() |
专题 | 清华大学 |
推荐引用方式 GB/T 7714 | Xiao, Qinghai,Li, Yunzhou,Zhao, Ming,et al. Opportunistic channel selection approach under collision probability constraint in cognitive radio systems[J],2010, 2010. |
APA | Xiao, Qinghai,Li, Yunzhou,Zhao, Ming,Zhou, Shidong,&Wang, Jing.(2010).Opportunistic channel selection approach under collision probability constraint in cognitive radio systems.. |
MLA | Xiao, Qinghai,et al."Opportunistic channel selection approach under collision probability constraint in cognitive radio systems".(2010). |
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