Optimum Periodic Spectrum Sensing for CR Networks

Author

Lu, Lu ; Li, Geoffrey Ye ; Li, Shaoqian

Author_Institution

Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA

Volume

16

Issue

12

fYear

2012

fDate

12/1/2012 12:00:00 AM

Firstpage

1

Lastpage

4

Abstract

In this article, we investigate joint sensing block length and detection threshold optimization to maximize the throughput of a cognitive radio (CR) network with limited interference to the primary user (PU). The CR network operates on a frame-by-frame basis, where the status of the PU can change at any time within one frame. Through theoretical analysis, optimal solution is derived, which is helpful to system design. Numerical results show that higher throughput can be obtained by considering the PU status change than the case without considering it.

Keywords

cognitive radio; optimisation; radio networks; radiofrequency interference; CR network; PU; cognitive radio network; detection threshold optimization; frame-by-frame basis; interference; joint sensing block length; optimum periodic spectrum sensing; primary user; theoretical analysis; throughput maximization; Cognitive radio; Interference; Optimization; Random variables; Sensors; Signal to noise ratio; Threshold current; Throughput; Periodic spectrum sensing; interference constraint; throughput optimization;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2012.111612.121162

Filename

6355929