Optimal Channel Sensing Sequence Design for Spectrum Handoff

Author

Chengyu Wu ; Chen He ; Lingge Jiang ; Yunfei Chen ; Qingjiang Shi

Author_Institution

Dept. of Electr. Eng., Shanghai Jiao Tong Univ., Shanghai, China

Volume

4

Issue

4

fYear

2015

Firstpage

353

Lastpage

356

Abstract

This letter considers the optimal channel sensing sequence (CSS) design for spectrum handoff in an overlay multi-channel cognitive radio networks (CRNs). We study the frame structure for spectrum handoff in the Rayleigh fading channels and formulate the CSS design problem as a sequential decision-making problem. Considering the secondary link maintenance probability during a frame, we design the optimal CSS length to achieve the maximum energy efficiency/throughput or the minimum energy consumption. A dynamic programming approach is proposed to solve the CSS design problems. Finally, the performance of the proposed design is examined and discussed using numerical examples.

Keywords

Rayleigh channels; cognitive radio; decision making; dynamic programming; mobility management (mobile radio); probability; CSS design problem; Rayleigh fading channels; dynamic programming approach; frame structure; multichannel cognitive radio networks; optimal channel sensing sequence design; secondary link maintenance probability; sequential decision-making problem; spectrum handoff; Cascading style sheets; Channel estimation; Cognitive radio; Fading; Sensors; Signal to noise ratio; Throughput; Channel sensing sequence; link maintenance; spectrum handoff; spectrum sensing;

fLanguage

English

Journal_Title

Wireless Communications Letters, IEEE

Publisher

ieee

ISSN

2162-2337

Type

jour

DOI

10.1109/LWC.2015.2417556

Filename

7070732