Nagakami衰落信道下无线Adhoc网络节点隔离概率
Node Isolation Probability of Wireless Adhoc Networks in Nagakami Fading Channel
摘要：
本文研究了无线自组织网络中存在信道损伤时的连通性问题。我们推导出的节点隔离概率在adhoc网络中的Nakagami-m衰落叠加对数正态阴影的存在下的解析表达式。节点隔离概率是随机选择的节点不能与网络中的任何其他节点通信的概率。研究了路径损耗指数、对数正态阴影、Nakagami衰落严重性指数、节点密度和分集阶数对节点隔离概率的影响。所得结果对自组网的实际设计具有一定的参考价值。
英文摘要：
This paper investigates the issue of connectivity of a wireless adhoc network in the presence of channel impairments. We derive analytical expressions for the node isolation probability in an adhoc network in the presence of Nakagami-m fading with superimposed lognormal shadowing. The node isolation probability is the probability that a randomly chosen node is not able to communicate with none of the other nodes in the network. An extensive investigation into the impact of path loss exponent, lognormal shadowing, Nakagami fading severity index, node density, and diversity order on the node isolation probability is conducted. The presented results are beneficial for the practical design of ad hoc networks.
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