A Distributed Cooperative MAC for Cognitive Radio Ad-hoc Networks

被引：0

作者：

Li, Yun ^{[1
]}

Zhang, Ruifeng ^{[1
]}

Cao, Bin ^{[2
]}

You, Xiaohu ^{[3
]}

Daneshmand, Ali ^{[4
]}

机构：

[1] Chongqing Univ Posts & Telecommun, Chongqing 400065, Peoples R China

[2] Univ Elect Sci & Technol, Natl Key Lab Sci & Technol Commun, Chengdu 611731, Peoples R China

[3] South Univ China, Natl Mobile Commun Res Lab, Nanjing 210096, Jiangsu, Peoples R China

[4] AT&T Labs, Middle Town, NJ USA

来源：

2011 IEEE SYMPOSIUM ON COMPUTERS AND COMMUNICATIONS (ISCC) | 2011年

基金：

美国国家科学基金会;

关键词：

Cognitive radio; cooperative communications; relay selection; Cooper-MAC;

D O I：

暂无

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

Cognitive radio has been suggested as an efficient method for secondary users to promote the efficient utilization of spectrum. Meanwhile, Cooperative relay allows different users or nodes to share resources and to create collaboration through distributed transmission in a wireless networks. The combination of Cognitive radio with cooperative communication could significantly improve the system performance in cognitive radio ad-hoc networks (CRAHNs). In this paper, we discuss how to use cooperative relay to increase the transmission rate in CRAHNs. We first give a new distributed relay selection algorithm, it considers several aspects including channel gain, channel available probability and spectrum heterogeneity of secondary nodes. A cooperative MAC protocol, Cooper-MAC, is then proposed for CRAHNs which enables secondary users to negotiate channels and relays. Simulation results demonstrate the effectiveness of the Cooper-MAC.

引用

页数：6

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