Title :
Breaking the SNR wall of spectrum sensing in cognitive radio by using the chaotic stochastic resonance
Author_Institution :
Dept. of Electron. Eng., Shanghai Jiao Tong Univ., Shanghai, China
fDate :
May 30 2010-June 2 2010
Abstract :
A novel spectrum sensing technique in cognitive radio (CR) networks based on chaotic stochastic resonance (CSR) is proposed in this paper. By introducing the received signal into the CSR system, the signal-to-noise ratio (SNR) of the signal can be improved, which can lead to the decrease of the SNR wall in the traditional energy detector and reduce the sample complexity needed to reach certain detection performance. Theoretical analyses and computer simulations validate the effectiveness of the proposed CSR-based spectrum sensing approach.
Keywords :
chaotic communication; cognitive radio; radio spectrum management; resonance; walls; CSR system; SNR; chaotic stochastic resonance; cognitive radio networks; signal-to-noise ratio; spectrum sensing technique; wall breaking; AWGN; Additive white noise; Chaos; Chromium; Cognitive radio; Computer simulation; Detectors; Helium; Signal to noise ratio; Stochastic resonance;
Conference_Titel :
Circuits and Systems (ISCAS), Proceedings of 2010 IEEE International Symposium on
Conference_Location :
Paris
Print_ISBN :
978-1-4244-5308-5
Electronic_ISBN :
978-1-4244-5309-2
DOI :
10.1109/ISCAS.2010.5537075
