A novel algorithm for cooperative distributed sequential spectrum sensing in Cognitive Radio
- Resource Type
- Conference
- Authors
- Sreedharan, Jithin K; Sharma, Vinod
- Source
- 2011 IEEE Wireless Communications and Networking Conference Wireless Communications and Networking Conference (WCNC), 2011 IEEE. :1881-1886 Mar, 2011
- Subject
- Communication, Networking and Broadcast Technologies
Computing and Processing
Cognitive radio
Algorithm design and analysis
Noise
Fading
Detectors
Testing
Cognitive Radio
Spectrum Sensing
Cooperative Distributed Algorithm
SPRT
- Language
- ISSN
- 1525-3511
1558-2612
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.