A new simple model for land mobile satellite channels: First- and second-order statistics
A new simple model for land mobile satellite channels: First- and second-order statistics
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DOI：
10.1109/twc.2003.811182
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发表时间：
2003-05-01
影响因子：
10.4
通讯作者：
Kaveh, M
中科院分区：
文献类型：
--
作者：
Abdi, A;Lau, WC;Kaveh, M
在本文中，我们提出了一个新的阴影莱斯模型的陆地移动的卫星信道。在该模型中，视线的幅度由Nakagami分布表征。该模型的主要优点是，它导致封闭的形式和抽象易处理的表达式的基本信道统计，如包络概率密度函数，瞬时功率的矩生成函数，和水平交叉率。该模型对于复杂的窄带和宽带陆地移动的卫星系统的性能分析和数值预测是非常方便的，这些系统具有不同类型的未编码/编码调制，有或没有分集。所提出的模型与不同的公布的信道数据集的一阶和二阶统计的比较表明，在表征各种信道条件和传播机制的卫星链路的新模型的灵活性。有趣的是，所提出的模型提供了一个类似的适合的实验数据作为公认的Loo的模型，但具有显着更少的计算负担。
In this paper, we propose a new shadowed Rice model for land mobile satellite channels. In this model, the amplitude of the line-of-sight is characterized by the Nakagami distribution. The major advantage of the model is that it leads to closed-form and mathematically-tractable expressions for the fundamental channel statistics such as the envelope probability density function, moment generating function of the instantaneous power, and the level crossing rate. The model is very convenient for analytical and numerical performance prediction of complicated narrowband and wideband land mobile satellite systems, with different types of uncoded/coded modulations, with or without diversity. Comparison of the first- and the second-order statistics of the proposed model with different sets of published channel data demonstrates the flexibility of the new model in characterizing a variety of channel conditions and propagation mechanisms over satellite links. Interestingly, the proposed model provides a similar fit to the experimental data as the well-accepted Loo's model but with significantly less computational burden.