| 认知无线电频谱感知技术研究 |
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| 引用本文： | 庞娜.认知无线电频谱感知技术研究[J].北华大学学报(自然科学版),2012,13(5):608-612. |
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| 作者姓名： | 庞娜 |
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| 作者单位： | 北华大学信息技术学院,吉林吉林132013;吉林大学仪器科学与电气工程学院,吉林长春130026 |
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| 摘 要： | 对基于发射机检测的频谱感知方法进行了分析,比较了能量检测和基于循环平稳信号检测两种方法,并对这两种检测方法进行了公式推导,给出了实现过程;对能量检测进行了误检测概率分析,得出信道噪声的不确定性将严重影响检测有效性的结论;通过对信号正确检测概率的仿真,验证了基于循环平稳信号的检测门限不是基于噪声能量,而是基于信号的统计分布特性.
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| 关 键 词： | 认知无线电 频谱感知 循环平稳 能量检测 |
Research on Spectrum Sensing Technology of Cognitive Radio |
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| PANG Na.Research on Spectrum Sensing Technology of Cognitive Radio[J].Journal of Beihua University(Natural Science),2012,13(5):608-612. |
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| Authors: | PANG Na |
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| Institution: | PANG Na1,2(1.Information Technology School of Beihua University,Jilin 132013,China; 2.School of Instrumentation and Electrical Engineering of Jilin University,Changchun 130026,China) |
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| Abstract: | This paper analyzes methods of spectrum sensing which are based on the transmitter detection,compares the energy detection and the detection which is based on the detailed cyclostationary model.The two algorithms are deduced and the implementation processes are given.The false detection probability of energy detection is analyzed.The result obtained that estimation of channel noise can affect the performance of signal detection seriously.Through the simulation of the authentic judge probability shows that the method is effective,the threshold based on the cyclostationary signal detection is not based on the noise energy instead of on the basis of the distribution of the signal. |
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| Keywords: | cognitive radio spectrum sensing cyclostationary energy detection |
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