电信科学 ›› 2011, Vol. 27 ›› Issue (1): 61-65.doi: 10.3969/j.issn.1000-0801.2011.01.012

• 研究与开发 • 上一篇    下一篇

基于上行时隙的新型信号检测方法研究

方箭1,黄标1,朱晓培2,黄秋香3   

  1. 1 国家无线电监测中心 北京 100083
    2 北京科技大学 北京 100083
    3 西部矿业股份有限公司 西安 810001
  • 出版日期:2011-01-15 发布日期:2011-01-15
  • 基金资助:
    国家重大专项基金资助项目;国家“863”计划基金资助项目;国家“863”计划基金资助项目;科技部对欧盟科技全作专项资助项目

A Novel Detection Scheme Based on Uplink Timeslots

Jian Fang1,Biao Huang1,Xianwei Zhou2,Qiuxiang Huang3   

  1. 1 State Radio Monitoring Center，Beijing 100083，China
    2 University of Science and Technology Beijing，Beijing 100083，China
    3 Western Mining Co.，Ltd.，Xining 810001，China
  • Online:2011-01-15 Published:2011-01-15

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摘要：

本文利用通信系统具有上下行时隙的特点，根据基站和用户终端发射功率的不同，提出了基于上行时隙的能量检测算法。在非授权用户系统的认知节点进行在线能量检测时，容易受到系统自身发射信号的干扰。为了减轻该影响，本文基于上行时隙进行能量检测，这样认知节点所受干扰主要来源于系统的用户终端，其带来的干扰相对较小。文中选取了TD-LTE系统作为非授权用户、雷达系统作为授权用户的认知系统开展研究，并通过MATLAB仿真证明了基于上行时隙的能量检测算法的可行性。

关键词: 认知无线电, TD-LTE, 雷达, 检错概率, 虚警概率

Abstract:

In this paper，a novel detection scheme will be introduced into the CR system，which have uplink timeslots and downlink timeslots，based on the different transmit power of base station（BS）and User Equipment（UE）. If the CR nodes of unauthorized users carry on the on-line energy detection，it will be subject to the interference originated from its own BS. A new detection program employed only in the uplink timeslots is proposed. In this program，the interference，which is coming from its own UE，may be weaker than it originated from BS. The paper researched the CR system，in which TD-LTE system is the unauthorized user and the radar system is authorized user. Through theoretical analysis and simulation，the feasibility of the new program has been verified.

Key words: CR, TD-LTE, radar system, detection failure probability, false alarm probability

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