Improved Energy Detectors for Cognitive Radios With Randomly Arriving or Departing Primary Users

被引：64

作者：

Beaulieu, Norman C. ^{[1
]}

Chen, Yunfei ^{[2
]}

机构：

[1] Univ Alberta, Dept Elect & Comp Engn, Edmonton, AB T6G 2V4, Canada

[2] Univ Warwick, Sch Engn, Coventry CV4 7AL, W Midlands, England

来源：

IEEE SIGNAL PROCESSING LETTERS | 2010年 / 17卷 / 10期

关键词：

Cognitive radio; energy detector; primary user;

D O I：

10.1109/LSP.2010.2064768

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：

New and improved energy detectors for cognitive radios are derived by considering the effect of the primary user traffic on spectrum sensing. The new energy detectors are designed based on the assumption that the primary user randomly arrives or departs during the sensing period. Numerical results show that the new energy detector outperforms the conventional energy detector in all the cases examined. The performance gain depends on the operating signal-to-noise ratio as well as the sample size used.

引用

页码：867 / 870

页数：4

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