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Cross-Layer Performance Analysis of the Unreliable Data Transmission for Decentralized Cognitive MAC Protocol under Multiple Secondary Users Scenario

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  • Hu Xiaofeng
  • Song Ting

    (Chongqing Key Lab of Mobile Communications Technology, Chongqing University of Posts and Telecommunications, Chongqing400065, China)

  • Xie Xianzhong

    (Institute of Personal Communications, Chongqing University of Posts and Telecommunications, Chongqing400065, China)

Abstract

The effect of multiple secondary users detecting the same primary user channel during a minor period on the performance of traditional energy detection is investigated. In order to achieve the target probability of detection, the minimum sampling time (MST) for energy detection is derived under the limitation of energy detection (LED), when the random arrival of the secondary users is taken into account. Jointly considering both spectrum sensing and access, we derive the probability of unreliable data transmission for decentralized cognitive MAC (DC-MAC) protocol based on MST under LED. The numerical results show that the simulation and theoretical analysis match very well. The reliability of data transmission is significantly degraded by the secondary users’ traffic. With the target probability of detection increasing, the reliable throughput reduces.

Suggested Citation

  • Hu Xiaofeng & Song Ting & Xie Xianzhong, 2013. "Cross-Layer Performance Analysis of the Unreliable Data Transmission for Decentralized Cognitive MAC Protocol under Multiple Secondary Users Scenario," Journal of Systems Science and Information, De Gruyter, vol. 1(1), pages 74-85, February.
    • Handle: RePEc:bpj:jossai:v:1:y:2013:i:1:p:74-85:n:5
    DOI: 10.1515/JSSI-2013-0074
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