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1. 杭州电子科技大学通信工程学院 杭州 310018
2. 中国电子科技集团第36研究所通信系统信息控制技术国家级重点实验室 嘉兴 314001
[ "赵知劲,女,博士,杭州电子科技大学教授、博士生导师,杭州电子科技大学通信工程学院党委书记,主要研究方向为认知无线电、通信信号处理、自适应信号处理等。" ]
[ "胡伟康,男,杭州电子科技大学硕士生,主要研究方向为认知无线电及频谱感知算法的研究。" ]
[ "王海泉,男,博士,杭州电子科技大学研究员,主要研究方向为认知无线电、多天线系统及空时码的设计与应用等" ]
网络出版日期:2014-04,
纸质出版日期:2014-04-20
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赵知劲, 胡伟康, 王海泉. 基于双特征值极限分布的合作频谱感知算法[J]. 电信科学, 2014,30(4):82-87.
Zhijin zhao, Weikang Hu, Haiquan Wang. Cooperative Spectrum Sensing Algorithm Based on Double Eigenvalue Limiting Distribution[J]. Telecommunications science, 2014, 30(4): 82-87.
赵知劲, 胡伟康, 王海泉. 基于双特征值极限分布的合作频谱感知算法[J]. 电信科学, 2014,30(4):82-87. DOI: 10.3969/j.issn.1000-0801.2014.04.012.
Zhijin zhao, Weikang Hu, Haiquan Wang. Cooperative Spectrum Sensing Algorithm Based on Double Eigenvalue Limiting Distribution[J]. Telecommunications science, 2014, 30(4): 82-87. DOI: 10.3969/j.issn.1000-0801.2014.04.012.
以最大最小特征值之差作为检测统计量,从提高算法判决门限估计精度出发,利用双特征值极限分布,用双特征值估计判决门限,提出了基于双特征值极限分布的频谱感知算法。相比于单特征值门限方法,理论上证明了用双特征值极限分布估计的门限小于或等于用单特征值极限分布估计的门限,提高了算法检测性能。仿真结果表明,该算法不受噪声不确定性影响,不需要主用户信息,并且在低虚警概率、采样次数相对少的情况下,检测性能优于最大最小特征值之差频谱感知算法。
A spectrum sensing algorithm using double eigenvalue limiting(DEL)distributions was presented. The difference between the maximum and the minimum eigenvalue was exploited as the test statistic. The double eigenvalue were used to estimate a threshold based on the double eigenvalue limiting distributions to heighten an accuracy of the threshold. Compared with the algorithm of single eigenvalue
the theoretical analyses demonstrate that the threshold estimated by DEL was less than its threshold and the performance of DEL was improved. In addition
simulations results show the proposed algorithm needs neither the prior acknowledge of the signal transmitted from primary user
nor the noise power in advance
and gains better performance against the short of sampling number than the difference between the maximum and the minimum eigenvalue(DMM)algorithm.
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