电信科学 ›› 2011, Vol. 27 ›› Issue (6): 79-83.doi: 10.3969/j.issn.1000-0801.2011.06.018

• 研究与开发 • 上一篇    下一篇

GSM频段主用户频谱占用情况的测量和建模研究

贾媛媛,谈振辉,黄清,周志艳   

  1. 北京交通大学宽带无线移动通信研究所 北京 100044
  • 出版日期:2011-06-15 发布日期:2011-06-15
  • 基金资助:
    国家“863”计划基金资助项目;中央高校基本科研业务费专项资金资助项目

Study on the Measurement,Analysis and Modeling of Primary User Spectrum Occupation in GSM Band

Yuanyuan Jia,Zhenhui Tan,Qing Huang,Zhiyan Zhou   

  1. Institute of Broadband Wireless Mobile Communication,Beijing Jiaotong University,Beijing 100044,China
  • Online:2011-06-15 Published:2011-06-15

摘要:

为获得GSM900频段主用户频谱的占用情况,利用频谱分析仪对北京部分地区850~970 MHz频段频谱进行了定点测量。通过MATLAB软件对测量数据进行分析和建模,得出GSM900频段主用户的频谱占用情况及其到达模型。研究发现,此段频谱的平均占用度只有2.33%,主用户到达时间间隔服从负指数分布的修正形式,为认知无线电用户选择频谱提供了参考,并为链路级仿真中主用户占用模式的确立提供了理论支持。

关键词: GSM900频段, 主用户, 到达时间, 认知无线电, 能量检测

Abstract:

In order to obtain the spectrum occupation in GSM900 band,the spectrum band ranging from 850 MHz to 970 MHz is measured by a spectrum analyzer.The data are analyzed and modeled using MATLAB.It is verified that the average spectrum occupation in this band is only 2.33% and the arrival time of primary user can be modeled as the modified form of the exponential distribution.The result can be used as a reference for secondary user to select the licensed bands,as well as theoretical support for link-level simulation in cognitive radio.

Key words: GSM900 band, primary user, arrival time, cognitive radio, energy detection

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