电子学报 ›› 2016, Vol. 44 ›› Issue (6): 1429-1436.DOI: 10.3969/j.issn.0372-2112.2016.06.025

• 学术论文 • 上一篇    下一篇

基于最优中继的自适应协作频谱感知算法

张学军1,2, 鲁友1, 田峰3, 严金童1, 成谢锋1,2   

  1. 1. 南京邮电大学电子科学与工程学院, 江苏南京 210003;
    2. 江苏省射频集成与微组装工程实验室, 江苏南京 210003;
    3. 南京邮电大学通信与信息工程学院, 江苏南京 210003
  • 收稿日期:2015-01-20 修回日期:2015-09-05 出版日期:2016-06-25
    • 作者简介:
    • 张学军 男,1969年生于江苏南通.南京邮电大学教授,硕士生导师.主要研究方向为认知网络频谱感知、无线射频识别技术、通信网络的性能分析、流量控制、QoS理论与技术等.E-mail:xjzhang@njupt.edu.cn;鲁友 男,1990年生于安徽六安.硕士研究生,研究方向为认知网络频谱感知、通信网络的性能分析;田峰 男,1979年生于山东枣庄.南京邮电大学副教授,硕士生导师.主要研究方向为认知无线电与动态频谱资源管理、协作通信和干扰管理等;严金童 女,1989年生于江苏盐城.硕士研究生,研究方向为认知网络频谱感知、通信网络的性能分析;成谢锋 男,1956年生于四川资阳.南京邮电大学教授,博士生导师.主要研究方向为智能信息处理、智能仪器等.
    • 基金资助:
    • 国家自然科学基金 (No.61201172,No.61170276); 江苏省第八批六大人才高峰项目 (No.2011-wlw-005); 江苏省自然科学基金 (No.BK20131090)

An Algorithm of Adaptive Cooperative Spectrum Sensing Based on Optimal Relay

ZHANG Xue-jun1,2, LU You1, TIAN Feng3, YAN Jin-tong1, CHENG Xie-feng1,2   

  1. 1. School of Electronic Science and Engineering, Nanjing University of Posts and Telecommunications, Nanjing, Jiangsu 210003, China;
    2. Jiangsu Province Engineering Lab of RF Integration & Micropackage, Nanjing, Jiangsu 210003, China;
    3. School of Telecommunication and Information Engineering, Nanjing University of Posts and Telecommunications, Nanjing, Jiangsu 210003, China
  • Received:2015-01-20 Revised:2015-09-05 Online:2016-06-25 Published:2016-06-25

摘要:

针对认知系统中感知信道存在衰落和中继能耗较大问题,提出一种兼顾感知性能和感知能耗的中继协作频谱感知算法.该算法通过机会中继协作、基于效益函数的最优中继协作和系统参数自适应调整机制,能够获得性能与能耗的优化折中.文章对所提算法进行了详细的理论推导和性能分析,并对非中继协作感知算法和最优中继固定的协作感知算法以及本算法在不同系统参数下的感知性能进行了仿真比较.结果表明本算法具有一定的优越性.

关键词: 认知无线电, 频谱感知, 机会中继, 最优中继, 参数调整

Abstract:

An algorithm of adaptively cooperative spectrum sensing based on optimal relay was proposed, which can overcome the problems about fading of sensing channel and huge consumption of relaying.This algorithm was based on the consideration of sensing performance and energy consumption and obtained optimal tradeoff between performance and consumption by opportunistic relaying, benefit function based selection of optimal relay and mechanism of system parameters adjustment.Meanwhile, detailed theoretical formulas and performance analysis of the algorithm were given.And the comparative simulation of sensing performance of non-relay cooperative sensing algorithm, optimal relay fixed cooperative sensing algorithm and this algorithm under different system parameters were done as well.The results show that the proposed algorithm has certain advantages.

Key words: cognitive radio, spectrum sensing, opportunistic relaying, optimal relay, parameters adjustment

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