| 基于循环谱对称性的频谱感知算法 |
| |
| 引用本文： | 高玉龙,陈艳平,官修挚,张中兆,沙学军.基于循环谱对称性的频谱感知算法[J].通信学报,2011,32(11):21-26. |
| |
| 作者姓名： | 高玉龙 陈艳平 官修挚 张中兆 沙学军 |
| |
| 作者单位： | 1. 哈尔滨工业大学通信技术研究所,黑龙江哈尔滨,150080
2. 哈尔滨工程大学计算机科学与技术学院,黑龙江哈尔滨,150001 |
| |
| 基金项目： | 国家重点基础研究发展计划("973"计划)基金资助项目，中央高校基本科研业务费专项基金资助项目 |
| |
| 摘 要： | 针对现有基于循环谱的频谱感知算法的不足,利用改进SSCA算法计算接收信号的循环谱,减少算法的计算量；利用循环谱的对称性,选择非零循环频率处的循环谱抵抗干扰和噪声,结合对称性搜索策略进行频谱感知.分析并仿真了循环谱的参数对频谱感知算法的影响,仿真结果证明了所提出算法克服了传统算法的不足,提高了低信噪比下的正确检测性能.
|
| 关 键 词： | 循环谱 频谱感知 分段谱相关算法 循环谱对称性 |
Spectrum sensing algorithm based on symmetry of cyclic spectral correlation |
| |
| GAO Yu-long,CHEN Yah-ping,GUAN Xiu-zhi,ZHANG Zhong-zhao,SHA Xue-jun.Spectrum sensing algorithm based on symmetry of cyclic spectral correlation[J].Journal on Communications,2011,32(11):21-26. |
| |
| Authors: | GAO Yu-long CHEN Yah-ping GUAN Xiu-zhi ZHANG Zhong-zhao SHA Xue-jun |
| |
| Affiliation: | GAO Yu-long1,CHEN Yan-ping2,GUAN Xiu-zhi1,ZHANG Zhong-zhao1,SHA Xue-jun1(1.Communication Research Center,Harbin Institute of Technology,Harbin 150080,China,2.Department of Computer Science and Technology,Harbin Engineering University,Harbin 150001,China) |
| |
| Abstract: | In response to the shortcoming of conventional algorithms,modified SSCA was exploited to calculate the cy-clic spectral correlation of received signal for decreasing the computational complexity.Symmetry of cyclic spectral cor-relation(CSC) was used to detect the idle spectrum,criteria and method of selecting and judging symmetry were pro-posed.Conventional binary hypothesis condition was translated to concrete value according to symmetry.In order to eliminate the effect of interference and noise,non-zero c... |
| |
| Keywords: | cyclic spectral correlation spectrum sensing strip spectral correlation algorithm symmetry of CSC |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《通信学报》浏览原始摘要信息 |
|
点击此处可从《通信学报》下载全文 |
|
