北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2010, Vol. 33 ›› Issue (4): 93-96.doi: 10.13190/jbupt.201004.93.pengt

• 论文 • 上一篇    下一篇

认知无线电网络高能效协作频谱感知技术

彭涛1,郭晨2,王文博3   

  1. 1. 北京邮电大学信息与通信工程学院
    2. 北京邮电大学
    3. 北京邮电大学电信工程学院
  • 收稿日期:2009-09-23 修回日期:2009-12-07 出版日期:2010-08-28 发布日期:2010-05-21
  • 通讯作者: 彭涛 E-mail:pengtao@bupt.cn
  • 基金资助:

    2009CB320400;国家级.国家重点基础研究发展计划项目

EnergyEfficient Cooperative Spectrum Sensing  in Cognitive Radio Networks

  • Received:2009-09-23 Revised:2009-12-07 Online:2010-08-28 Published:2010-05-21

摘要:

提出了一种协作频谱感知方式. 通过对本地观测向量和预设门限的比较,认知用户可以根据本 地感知的可靠性决定是否向基站发送本地判决结果. 在不同控制信道条件下,采用计数准则 和NeymanPearson准则对所提出的协作频谱感知方式进行了感知性能研究. 理论分析和仿 真结果表明,这种协作频谱感知方式在保证检测性能的基础上,有效减少了协作通信开销, 提升了感知能效.

关键词: 认知无线电网络, 协作频谱感知, 计数准则, NeymanPearson准则

Abstract:

A new cooperative spectrum sensing scheme is proposed to reduce the cooperation overhead. After comparing the local observation with the threshold, the user cou ld decide, whether or not, to transmit local decision to the base station. Two f usion rules, counting rule and NeymanPearson rule, are investigated for the pr oposed sensing scheme. Analysis and simulation show that the proposed scheme gua rantees sensing reliability without any performance loss and reduces the communi cation overhead significantly to achieve high energy efficiency in sensing cooperation.

Key words: cognitive radio network, cooperative spectrum sensing, counting rule, NeymanPearson rule