计算机工程 ›› 2011, Vol. 37 ›› Issue (18): 68-70.doi: 10.3969/j.issn.1000-3428.2011.18.023

• 网络与通信 • 上一篇    下一篇

认知无线电系统协作频谱感知机制优化

胡晓宁,仵国锋,胡捍英   

  1. (解放军信息工程大学信息工程学院通信工程系,郑州 450002)
  • 收稿日期:2011-03-23 出版日期:2011-09-20 发布日期:2011-09-20
  • 作者简介:胡晓宁(1984-),男,硕士研究生,主研方向:认知无线电频谱感知技术;仵国锋,博士研究生;胡捍英,教授
  • 基金项目:
    国家“863”计划基金资助项目(2009AA011504);国家重大科技专项基金资助项目(2009ZX03003-007)

Optimization for Cooperative Spectrum Sensing Mechanism in Cognitive Radio System

HU Xiao-ning, WU Guo-feng, HU Han-ying   

  1. (Dept. of Communication Engineering, College of Information Engineering, PLA Information Engineering University, Zhengzhou 450002, China)
  • Received:2011-03-23 Online:2011-09-20 Published:2011-09-20

摘要: 为使干扰受限情况下的频谱感知效率达到最大,提出一种认知无线电系统协作频谱感知机制的优化方案。定义系统模型,运用协作频谱感知对系统目标进行联合优化,包括感知时间、传输时间、参与协作的感知用户数在内的感知参数优化。仿真结果证明,采用该优化方案,能在满足干扰受限的条件下最大化频谱感知效率。

关键词: 认知无线电, 协作频谱感知, 感知效率, 干扰受限

Abstract: In order to maximize the spectrum sensing efficiency in the interference-limited primary systems, this paper proposes an optimization scheme for cooperative spectrum sensing mechanism in Cognitive Radio(CR) system. It defines the system model, jointly optimizing the crucial sensing parameters of sensing duration, transmission duration and the numbers of CR users participating in cooperative spectrum sensing. Simulation results show that the proposed scheme is capable of maximizing the spectrum sensing efficiency while satisfying the interference-limited.

Key words: Cognitive Radio(CR), cooperative spectrum sensing, sensing efficiency, interference-limited

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