Abstract

This paper presents minimal-ray a sum-of-sinusoids fading model with one direct signal and multipath signal as minimum as three in number, having phase, attenuation, and time of arrival as random variables for random scatterer area. In most of the literature, fading simulators assume independence of random phase and angle of arrival. Because of this, at the receiver side, the demodulator has to adjust the phase by trial and error method to recover the original time-variant signal which is a tedious process. If the dependency of the random phase and the angle of deviation is proved, then it is easier at the receiver side for the demodulator to adjust the phase directly. This work defines the simple relationship between the angle of deviation and random phase which can directly help at the receiver side for adjusting the deviation occurred in the transmitted signal. The statistical characteristics of the proposed model are analyzed and validity is ensured with empirical data for the Worldwide interoperability for microwave access (Wi-MAX) application. The goodness of fit is verified with the Kolmogorov–Smirnov test and the results show that it agrees best with the Ricean distribution, compared with Rayleigh distribution.

中文翻译：

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使用最小射线衰落模型测量和分析3.3 GHz Wi-MAX信道

摘要

本文提出了一种最小射线正弦衰落模型，其中一个直接信号和多径信号的数量最少为三个，具有相位，衰减和到达时间作为随机散射区的随机变量。在大多数文献中，衰落仿真器假定随机相位和到达角无关。因此，在接收机侧，解调器必须通过反复试验方法来调整相位，以恢复原始的时变信号，这是一个繁琐的过程。如果证明了随机相位和偏差角之间的相关性，那么解调器在接收机端直接调整相位就容易了。这项工作定义了偏差角与随机相位之间的简单关系，它可以直接在接收器侧帮助调整发射信号中发生的偏差。分析了所提出模型的统计特性，并通过经验数据确保了微波接入全球互操作性（Wi-MAX）应用的有效性。通过Kolmogorov–Smirnov检验验证了拟合优度，结果表明，与Rayleigh分布相比，它与Ricean分布最吻合。