Diversity-Multiplexing Tradeoff in Selective Cooperation for Cognitive Radio
Diversity-Multiplexing Tradeoff in Selective Cooperation for Cognitive Radio
复制标题
认知无线电选择性合作中的分集复用权衡
DOI：
10.1109/tcomm.2012.072612.110180
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发表时间：
2012-07
影响因子：
8.3
通讯作者：
Zheng Baoyu
中科院分区：
文献类型：
--
作者：
Zou Yulong;Yao Yu-Dong;Zheng Baoyu
在本文中，我们首先探讨了具有单个继电器的认知无线网络中二级用户传输的选择性合作框架。在选择性合作框架中，两种传输模式（即继电器多样性传输和非R
In this paper, we first explore a selective cooperation framework for secondary user transmissions in a cognitive radio network with single relay. In the selective cooperation framework, two transmission modes (i.e., relay diversity transmission and non-relay direct transmission) are considered. We study two specific selective cooperation schemes with and without an acknowledgement (ACK) from a cognitive destination as to if it succeeds in decoding or not, called ACK and non-ACK based selective cooperation, respectively. We derive closed-form outage probability expressions for the two schemes with imperfect spectrum sensing, showing that an outage probability floor occurs in high signal-to-noise ratio (SNR) regions due to mutual interference between primary and secondary users. We consider the use of the outage probability floor to generalize the traditional diversity-multiplexing tradeoff (DMT) definition, based on which a DMT analysis is conducted for the non-ACK and ACK based selective cooperation schemes. We then extend the selective cooperation framework to a multiple-relay cognitive radio network considering the best cognitive relay only to participate in assisting secondary transmissions, referred to as the selective best-relay cooperation. We also consider the non-ACK and ACK based selective best-relay cooperation schemes and develop their DMTs by using the generalized DMT definition.
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DOI：
10.1109/dyspan.2005.1542627
发表时间：
2005-12
期刊：
First IEEE International Symposium on New Frontiers in Dynamic Spectrum Access Networks, 2005. DySPAN 2005.
影响因子：
--
作者：
A. Ghasemi;E. Sousa
通讯作者：
A. Ghasemi;E. Sousa
DOI：
10.1109/98.788210
发表时间：
1999-08-01
期刊：
IEEE PERSONAL COMMUNICATIONS
影响因子：
--
作者：
Mitola, J;Maguire, GQ
通讯作者：
Maguire, GQ
影响因子：
10.4
作者：
Elzbieta Beres;R. Adve
通讯作者：
Elzbieta Beres;R. Adve
认知传输的中断概率分析：频谱感知开销的影响
影响因子：
10.4
作者：
Zou Yulong;Yao Yu-Dong;Zheng Baoyu
通讯作者：
Zheng Baoyu
影响因子：
10.4
作者：
Yulong Zou;B. Zheng;Jia Zhu
通讯作者：
Yulong Zou;B. Zheng;Jia Zhu