Cyclostationarity-Based Spectrum Sensing Technique in Multi-Antenna Cognitive Radio

doi:10.13190/jbupt.200802.85.chenx

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2008, Vol. 31 ›› Issue (2): 85-89.doi: 10.13190/jbupt.200802.85.chenx

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Cyclostationarity-Based Spectrum Sensing Technique in Multi-Antenna Cognitive Radio

CHEN Xing, HE Zhi-qiang, WU Wei-ling

Key Laboratory of Information Processing and Intelligent Technology,
Beijing University of Posts and Telecommunications, Beijing 100876, China

Received:2007-07-16 Revised:1900-01-01 Online:2008-04-28 Published:2008-04-28
Contact: CHEN Xing

Abstract

Abstract:

A multi-antenna spectrum sensing technique based on cyclostationary characters was proposed to improve the sensing performance in cognitive radio. After estimating the channel frequency response from the spectral correlation function (SCF) of each antenna, the new method combines the multiple antenna signals in frequency domain to detect the spectrum of combined signal. The closed-form expression for the signal noise ratio (SNR) of combined signal’s SCF and simulation results show that the technique is capable of achieving full spatial diversity in spectrum sensing.

Key words: cognitive radio, spectrum sensing, spatial diversity, cyclostationarity

CLC Number:

TN911.22

CHEN Xing, HE Zhi-qiang, WU Wei-ling
. Cyclostationarity-Based Spectrum Sensing Technique in Multi-Antenna Cognitive Radio[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2008, 31(2): 85-89.

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Cyclostationarity-Based Spectrum Sensing Technique in Multi-Antenna Cognitive Radio

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