We analyzed the performance of spectrum sensing with energy detector in cognitive radio network.
分析了认知无线电网络中使用能量检测器进行频谱检测的性能。
Spectrum sensing is one of the key technologies in cognitive radio and energy detection is a typical method of it.
频谱感知是认知无线电研究的关键技术之一，能量检测法是典型的频谱感知方法。
The second is the measurement of arrival direction for radio signals, which is to monitor the spatial distribution of radio energy, which is often called spatial spectrum estimation.
第二是对无线电信号来波方向的测量，即是要对无线电信号能量在空间的分布进行监测，这就是所谓的空间谱估计技术。
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