A novel algorithm for cooperative distributed sequential spectrum sensing in Cognitive Radio

Author

Sreedharan, Jithin K. ; Sharma, Vinod

Author_Institution

Dept. of Electr. Commun. Eng., Indian Inst. of Sci., Bangalore, India

fYear

2011

fDate

28-31 March 2011

Firstpage

1881

Lastpage

1886

Abstract

This paper considers cooperative spectrum sensing in Cognitive Radios. In our previous work we have developed DualSPRT, a distributed algorithm for cooperative spectrum sensing using Sequential Probability Ratio Test (SPRT) at the Cognitive Radios as well as at the fusion center. This algorithm works well, but is not optimal. In this paper we propose an improved algorithm- SPRT-CSPRT, which is motivated from Cumulative Sum Procedures (CUSUM). We analyse it theoretically. We also modify this algorithm to handle uncertainties in SNR´s and fading.

Keywords

cognitive radio; cooperative communication; probability; CUSUM; DualSPRT; SPRT-CSPRT; cognitive radio; cooperative distributed sequential spectrum sensing; cumulative sum procedures; distributed algorithm; fusion center; sequential probability ratio test; Algorithm design and analysis; Cognitive radio; Detectors; Fading; Noise; Testing; Cognitive Radio; Cooperative Distributed Algorithm; SPRT; Spectrum Sensing;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications and Networking Conference (WCNC), 2011 IEEE

Conference_Location

Cancun, Quintana Roo

ISSN

1525-3511

Print_ISBN

978-1-61284-255-4

Type

conf

DOI

10.1109/WCNC.2011.5779420

Filename

5779420