GBIC Based Wideband Spectrum Sensing in Cognitive Radio

doi:10.13190/j.jbupt.2015.02.015

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2015, Vol. 38 ›› Issue (2): 83-88.doi: 10.13190/j.jbupt.2015.02.015

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GBIC Based Wideband Spectrum Sensing in Cognitive Radio

SHEN Bin, WANG Ping-yu, CHENG Ke-fei, CHEN Qian-bin

Key Laboratory of Mobile Communications Technology, Chongqing University of Posts and Telecommunications, Chongqing 400065, China

Received:2014-06-30 Online:2015-04-28 Published:2015-05-14

Abstract

Abstract:

A generalized Bayesian information criterion (GBIC) based wideband spectrum sensing scheme was proposed for cognitive radios. The proposed algorithm first estimates the number of subbands occupied by primary users in the licensed frequency band under the GBIC mechanism. Subsequently, their positions in the wide spectrum are identified. In this way, the idle subbands can be dynamically accessed by the secondary users. Simulations illustrate that the proposed wideband sensing scheme of GBIC, is capable of significantly improving the spectrum sensing performance and very close to the conventional energy detection scheme.

Key words: cognitive radio, wideband sensing, generalized Bayesian information criterion

CLC Number:

TN929.5

SHEN Bin, WANG Ping-yu, CHENG Ke-fei, CHEN Qian-bin. GBIC Based Wideband Spectrum Sensing in Cognitive Radio[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2015, 38(2): 83-88.

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GBIC Based Wideband Spectrum Sensing in Cognitive Radio

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