DocumentCode :
3166546
Title :
Performance limitations for cooperative spectrum sensing with reporting channel errors
Author :
Chaudhari, Sachin ; Lundén, Jarmo ; Koivunen, Visa
Author_Institution :
Sch. of Electr. Eng., Dept. of Signal Process. & Acoust., Aalto Univ., Aalto, Finland
fYear :
2011
fDate :
11-14 Sept. 2011
Firstpage :
337
Lastpage :
342
Abstract :
The main focus of this paper is on the performance limitations for cooperative spectrum sensing in cognitive radios caused by the reporting channel errors. In this paper, we consider hard decision (HD) based cooperative sensing (CS), where each secondary user (SU) detecting a primary user (PU) sends a one-bit local decision to the fusion center (FC). The reporting channel errors may cause bit errors which may be non-identically distributed. The effect of reporting channel errors is incorporated in the analysis through Bit Error Probability (BEP). The detection performance at the fusion center is studied for the counting rule or K-out-of-N fusion rule using analytical tools and simulations. For CS, a BEP wall exists under the imposed constraints on the false alarm probability and missed detection probability. In this paper, we specifically study the BEP wall phenomenon for the counting rule in a general scenario, where the reporting channels are independent but may or may not be identically distributed.
Keywords :
cognitive radio; cooperative communication; error statistics; probability; BEP; CS; FC; HD; PU; SU; bit error probability; cooperative spectrum sensing; false alarm probability; fusion center; hard decision; one-bit local decision; reporting channel errors; Detectors; Error probability; High definition video; OFDM; Signal to noise ratio; Vectors; Boolean Fusion Rule; Cooperative Detection; Imperfect Reporting Channels; Performance Analysis;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Personal Indoor and Mobile Radio Communications (PIMRC), 2011 IEEE 22nd International Symposium on
Conference_Location :
Toronto, ON
ISSN :
pending
Print_ISBN :
978-1-4577-1346-0
Electronic_ISBN :
pending
Type :
conf
DOI :
10.1109/PIMRC.2011.6139978
Filename :
6139978
Link To Document :
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