The Handoff Study of Imperfect Sensing in Cognitive Radio Network

doi:10.13190/j.jbupt.2016.04.003

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2016, Vol. 39 ›› Issue (4): 13-18.doi: 10.13190/j.jbupt.2016.04.003

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The Handoff Study of Imperfect Sensing in Cognitive Radio Network

MA Bin, BAO Xiao-min, XIE Xian-zhong

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

Received:2016-01-21 Online:2016-08-28 Published:2016-08-28

Abstract

Abstract: To guarantee the quality of service of licensed users, the unlicensed users must vacate the occupied channel by spectrum handoff if the licensed users appear in the cognitive radio. However, the spectrum sensing with false alarm and missed detection may lead to more inaccuracy problems when the unlicensed users perform spectrum handoff. To solve the problems mentioned here, the authors utilize the preemption resume priority(PRP) M/G/1 queuing network model to propose a spectrum handoff algorithm with error data retransmission mechanism and analyze its performance by transmission latency and extended data delivery time. In addition, the authors discussed the relationship between false alarm probability, extended data delivery time and user traffic load, and verified the effectiveness of the proposed algorithm.

Key words: cognitive radio, spectrum handoff, imperfect sensing, queuing theory

CLC Number:

TN929.5

MA Bin, BAO Xiao-min, XIE Xian-zhong. The Handoff Study of Imperfect Sensing in Cognitive Radio Network[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2016, 39(4): 13-18.

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The Handoff Study of Imperfect Sensing in Cognitive Radio Network

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