Wireless Internet. 6th International ICST Conference, WICON 2011, Xi’an, China, October 19-21, 2011, Revised Selected Papers

Research Article

Throughput and Sensing Bandwidth Tradeoff in Cognitive Radio Networks

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  • @INPROCEEDINGS{10.1007/978-3-642-30493-4_2,
        author={Wenshan Yin and Pinyi Ren and Shuangcheng Yan},
        title={Throughput and Sensing Bandwidth Tradeoff in Cognitive Radio Networks},
        proceedings={Wireless Internet. 6th International ICST Conference, WICON 2011, Xi’an, China, October 19-21, 2011, Revised Selected Papers},
        proceedings_a={WICON},
        year={2012},
        month={10},
        keywords={Delay throughput bandwidth spectrum sensing},
        doi={10.1007/978-3-642-30493-4_2}
    }
    
  • Wenshan Yin
    Pinyi Ren
    Shuangcheng Yan
    Year: 2012
    Throughput and Sensing Bandwidth Tradeoff in Cognitive Radio Networks
    WICON
    Springer
    DOI: 10.1007/978-3-642-30493-4_2
Wenshan Yin1,*, Pinyi Ren1,*, Shuangcheng Yan1,*
  • 1: Xi’an Jiaotong University
*Contact email: yws.xjt@stu.xjtu.edu.cn, pyren@mail.xjtu.edu.cn, yansc@stu.xjtu.edu.cn

Abstract

Within the sequential sensing and transmission paradigm (SSTP), spectrum sensing over the whole primary user (PU) band always suspends secondary user (SU) data transmission in the sensing interval. Delay incurred by this kind of suspension may be intolerable to delay sensitive SU services. To alleviate this problem, we adopt a parallel sensing and transmission paradigm (PSTP), within which the SU transmits and senses simultaneously. In this paper, we investigate the relationship between the achievable SU throughput and bandwidth allocated for spectrum sensing within the PSTP, under the constraint that the PU is sufficiently protected. We also study the delay improvements of the PSTP over that of the SSTP. Both theoretical analyses and simulation results that there exists an optimal sensing bandwidth that maximizes the achievable SU throughput within the PSTP. Furthermore, compared to the SSTP, the SU delay is reduced by using the PSTP.