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认知无线电能量检测

于 2022-01-26 发布 文件大小:1.97 kB
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能量检测是有吸引力的频谱感知认知无线电的方法。能量检测的设计依赖于两个关键假设: 1) 噪声功率是完美和已知 {这是一个事先} ;和 2) 能量检测的统计可以准确地模拟作为独立和完全相同的测试分布随机变量序列 (矩) 高斯。在实践中,噪声功率从时间到时间而异。这使得难以估计噪声功率并会招致建模试验统计数据不准确。本文研究如何实现能量检测在真实的环境中使用软件定义无线电。在实际环境中噪声功率的变化进行了研究。一种基于直方图方法被提出确定能量检测的阈值。

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