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Coverage aspects of cooperative multi-hop line networks in correlated shadowed environment

机译:相关阴影环境下协作多跳线网络的覆盖范围

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We develop a stochastic model to characterize the effects of correlated shadow fading on a linear cooperative multi-hop wireless network. A one-dimensional network of equally-spaced nodes is considered, where a group of nodes transmits cooperatively to another group of nodes under large-scale fading effects. The transmission from one level to another is modeled as a Markov process and the transition probability matrix of the Markov chain is derived, which depends upon the underlying distribution of the received power. The received power is modeled as a log-normal random variable and its distribution is derived by using Fenton-Wilkinson's approach. The eigen-decomposition of the transition matrix provides insightful information about the network coverage and various other parameters. We quantify the values of signal-to-noise ratio margin required to get a desired coverage distance under a given quality of service and standard deviation of shadowing constraints. The accuracy of the model is validated by matching both the simulation and analytical results.
机译:我们开发了一个随机模型来表征线性协作多跳无线网络上相关阴影衰落的影响。考虑等距节点的一维网络,其中一组节点在大规模衰落效应下协同传输到另一组节点。从一个级别到另一个级别的传输被建模为马尔可夫过程,并推导了马尔可夫链的转移概率矩阵,这取决于接收功率的基础分布。将接收功率建模为对数正态随机变量,并使用Fenton-Wilkinson的方法得出其分布。转换矩阵的特征分解可提供有关网络覆盖范围和各种其他参数的深入信息。我们量化在给定的服务质量和阴影约束的标准偏差下,获得所需覆盖距离所需的信噪比容限值。通过匹配仿真结果和分析结果来验证模型的准确性。

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