Title :
A New Cooperative Spectrum Sensing Algorithm in Cognitive Networks
Author :
Li Ling ; Cai Yan ; Zhu Hongbo
Author_Institution :
Nanjing Univ. of Posts & Telecommun., Nanjing, China
Abstract :
Among variant kinds of spectrum sensing strategies in cognitive radio (CR) broadly studied before, cooperative sensing is the most popular one to detect the primary user accurately. This paper proposes a new cooperative spectrum sensing algorithm in which double threshold energy detection will be employed at local decision and different fusion rules will be used at the fusion center. Theoretic analysis shows that the proposed cooperative sensing scheme has a good performance in either minimizing the total error probability or detection accuracy.
Keywords :
cognitive radio; error statistics; radio spectrum management; sensor fusion; signal detection; cognitive radio network; cooperative spectrum sensing algorithm; double threshold energy detection; error probability; fusion rule; Algorithm design and analysis; Chromium; Cognitive radio; Communication system traffic control; Degradation; Error probability; Fading; Interference; Performance analysis; Shadow mapping;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing, 2009. WiCom '09. 5th International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-3692-7
Electronic_ISBN :
978-1-4244-3693-4
DOI :
10.1109/WICOM.2009.5305143
