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A novel statistics for the NWDP: An appropriate fading model for 5G/6G mmWave communications

衰退 镜面反射 频道(广播) 信道状态信息 莱斯衰减 衰落分布 计算机科学 发射机 统计 累积分布函数 算法 数学 电信 统计物理学 瑞利衰落 电子工程 概率密度函数 光学 物理 无线 工程类
作者
Fershteh Salimian Rizi,Abolfazl Falahati
出处
期刊:Transactions on Emerging Telecommunications Technologies 卷期号:35 (1)
标识
DOI:10.1002/ett.4881
摘要

Summary There are many aspects concerning a new generation of communication systems that most existing channel models cannot address. For instance, the positioning of the transmitter and receiver is such that a large number of specular components are observed in the receiver due to the use of small cells. The two‐wave with diffuse power (TWDP) distribution is a model for the fading channel when two specular waves with many scattering components are present. The primary issue with this distribution is that its principal statistics are approximated. In this paper, precise analytical expressions for the statistics of this distribution are proposed. The proposed expressions only contain one multivariate Fox's ‐function term instead of the earlier approximations that included several complex mathematical functions like Legendre and Laguerre. The second issue with TWDP is that this model includes no more than two specular components, which in many environments is insufficient. Therefore, its generalization, that is, N‐wave with diffuse power (NWDP), is required. This channel‐fading model contains N specular components and multiple scattering components. This paper also calculates exact expressions for this distribution's statistics. In addition, the bit error rate (BER) for coherent and noncoherent modulations is calculated with the NWDP distribution for fading channel.

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