Connectivity of cognitive radio ad hoc networks with directional antennas

被引：0
|
作者：
Yuanyuan Wang
Qiu Wang
Hong-Ning Dai
Haibo Wang
Zhiguo Shi
机构：
[1] Macau University of Science and Technology,
[2] Beijing Jiaontong University,undefined
[3] Zhejiang University,undefined
来源：
Wireless Networks | 2018年 / 24卷
关键词：
Connectivity; Cognitive radio ad hoc network; Directional antennas;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
In cognitive radio ad hoc networks, omni-directional antennas are typically used at both primary users (PUs) and secondary users (SUs), which can cause high interference. We name such cognitive radio ad hoc networks with omni-directional antennas as OMN-CRAHNs. Different from omni-directional antennas, directional antennas can concentrate the transmission on desired directions and can consequently reduce interference in undesired directions. In this paper, we investigate both the local connectivity and the overall connectivity of cognitive radio ad hoc networks with directional antennas (DIR-CRAHNs), in which both PUs and SUs are equipped with directional antennas. In particular, we establish a theoretical framework to analyze both the probability of node isolation and the probability of connectivity of DIR-CRAHNs and OMN-CRAHNs. Our analytical results show that DIR-CRAHNs can have higher connectivity than OMN-CRAHNs.
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页码：3045 / 3061
页数：16
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