波动散射环境中透射随时间变化的第一性原理模型
A first-principles model of time-dependent variations in transmission through a fluctuating scattering environment
摘要：
衰落是由于干扰或时间演变的多径散射而导致的通过复杂介质的发射信号强度的时间相关变化。在本文中，我们使用随机矩阵理论（RMT）建立第一性原理模型的衰落，包括普遍和非普遍的影响。该模型提供了对最常见的统计模型（瑞利衰落和莱斯衰落）的更一般的理解，并为其参数提供了详细的物理基础。我们还报告了两个射线混沌微波腔的实验测试。结果表明，我们的RMT模型同意瑞利/赖斯模型在高损耗制度，但有很强的偏差，在低损耗系统的RMT方法描述的数据。
英文摘要：
Fading is the time-dependent variation in transmitted signal strength through a complex medium, due to interference or temporally evolving multipath scattering. In this paper we use random matrix theory (RMT) to establish a first-principles model for fading, including both universal and non-universal effects. This model provides a more general understanding of the most common statistical models (Rayleigh fading and Rice fading) and provides a detailed physical basis for their parameters. We also report experimental tests on two ray-chaotic microwave cavities. The results show that our RMT model agrees with the Rayleigh/Rice models in the high loss regime, but there are strong deviations in low-loss systems where the RMT approach describes the data well.
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