Impact of Rate Control on the Performance of a Cognitive Radio Ad-Hoc Network

被引：5
|
作者：
Montejo Sanchez, Samuel [2 ]
Demo Souza, Richard [1 ]
Fernandez, Evelio M. G. [3 ]
Alfonso Reguera, Vitalio [2 ]
机构：
[1] Fed Univ Technol Parana UTFPR, Curitiba, Parana, Brazil
[2] Cent Univ Las Villas UCLV, Santa Clara, Cuba
[3] Fed Univ Parana UFPR, Curitiba, Parana, Brazil
来源：
IEEE COMMUNICATIONS LETTERS | 2012年 / 16卷 / 09期
关键词：
Cognitive radio; location awareness; concurrent transmissions; rate control;
D O I：
10.1109/LCOMM.2012.070512.120862
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
Location awareness allows to define a concurrent transmission region where a primary and a secondary networks can coexist. In this paper we investigate the impact of channel rate control on the performance of a cognitive radio ad hoc network overlaying an infrastructure-based system. The proposed algorithm adequately adjusts the secondary user rate to be as large as possible while respecting a given constraint on the achievable primary rate. As a consequence, the rate control scheme expands the concurrent transmission region and increases the average rate of the secondary users, without affecting the primary. Numerical results show that it is possible to increase the throughput of the cognitive ad-hoc network and therefore increase the efficiency of the spectrum utilization.
引用
收藏
页码：1424 / 1427
页数：4
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