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Alternative TitleOutage performance of multihop cognitive radio networks with a spatial-temporal opportunity model
许驰; 郑萌; 梁炜; 于海斌
Source Publication中国科学:信息科学
Indexed ByCSCD
Contribution Rank1
Funding Organization中国科学院战略性先导科技专项(批准号: XDA06021000)和中国科学院科技创新交叉与合作团队计划(面向智能电网安全监控及信息互动的网络与系统技术)资助
Keyword认知无线网络 多跳 频谱共享 空时机会 空时联合接入策略 中断概率
Other AbstractWith the aim of improving the spectrum utilization of licensed bands and achieving continuous data transmission for cognitive radio networks (CRNs), we de_ne a novel two-dimensional spatial-temporal opportunity model that considers both the temporal and spatial characteristics of a spectrum hole. Based on this model, a joint spatial-temporal access scheme is proposed to ensure that CRNs can access the licensed bands successively and carry out data transmission continuously. In order to validate the rationalities and superiorities of the pro- posed model and scheme, the outage performance of multi-hop CRNs for the Nakagami-m fading channel was investigated. The CRNs exploit the _xed relay multi-hop transmission mode in which decode-and-forward and selection diversity combining schemes are employed. Using the proposed model, we derived the outage prob- ability of multi-hop CRNs and obtained its closed-form expression. Then, the outage performance of the joint spatial-temporal access scheme was analyzed and compared with that of pure temporal and spatial access schemes through simulations. The results showed that the average network outage probability of the joint scheme is much lower.
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Document Type期刊论文
Corresponding Author于海斌
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GB/T 7714
许驰,郑萌,梁炜,等. 空时机会模型下多跳认知无线网络的中断性能[J]. 中国科学:信息科学,2015,45(11):1490-1502.
APA 许驰,郑萌,梁炜,&于海斌.(2015).空时机会模型下多跳认知无线网络的中断性能.中国科学:信息科学,45(11),1490-1502.
MLA 许驰,et al."空时机会模型下多跳认知无线网络的中断性能".中国科学:信息科学 45.11(2015):1490-1502.
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