Performance of Highly Mobile Cognitive Radio Networks with Directional Antennas

被引：0
|
作者：
Murawski, Robert [1 ]
Ekici, Eylem [1 ]
Chakravarthy, Vasu [2 ]
McQuay, William K. [2 ]
机构：
[1] Ohio State Univ, Dept Elect & Comp Engn, Columbus, OH 43210 USA
[2] Air Force Res Lab, Wright Patterson AFB, OH 45433 USA
来源：
2011 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS (ICC) | 2011年
关键词：
Cognitive Radio; Dynamic Spectrum Access; Directional Antenna; DIVISION MULTIPLE-ACCESS;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Cognitive radio systems allow secondary users to operate on underutilized licensed spectrum. When considering highly congested communication channels, however, opportunities for channel access based on time or frequency division can be limited for secondary user networks. In this research, we consider leveraging enhanced spatial diversity through directional steerable antennas to allow secondary user channel access in parallel with licensed spectrum users. Furthermore, we consider effects of mobility on directional secondary user networks and introduce a mechanism for maintaining point-to-point directional communication links in the presence of mobility. We study the trade-offs between spatial diversity and coordination overhead to motivate the use of directional antennas, even in highly mobile cognitive radio networks.
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页数：5
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