Optimal multiband spectrum sensing in cognitive radio

被引：2
|
作者：
Zhang, Wen [1 ]
Yang, Jiawei [1 ]
Yan, Qi [1 ]
Zhang, Li [2 ]
机构：
[1] Xidian Univ, State Key Lab Integrated Serv Networks, Inst Informat Sci, Xian 710071, Peoples R China
[2] Shanghai Univ, Key Lab Specialty Fiber Opt & Opt Access Networks, Shanghai 200072, Peoples R China
来源：
IEICE ELECTRONICS EXPRESS | 2010年 / 7卷 / 20期
关键词：
cognitive radio; spectrum detection; energy detection; OFDM; throughput;
D O I：
10.1587/elex.7.1557
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：
In order to maximize the throughput in cognitive radio when primary communication system is an OFDM system, the optimal spectrum sensing is addressed. Firstly the single user sensing is discussed, and it is proved that the optimal sensing time that maximizes the throughput exists. In addition, the cooperative sensing using k-out-of-N fusion rule is considered. By analyzing the mathematical model of the throughput, a joint searching method is proposed to obtain the optimal sensing time and fusion rules which can maximize the throughput. In the simulation results, the correctness of theoretical analysis is verified.
引用
收藏
页码：1557 / 1563
页数：7
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