衰落信道下无线多跳网络的连通性研究

Connectivity of Wireless Multi-hop Networks under Fading Channel

基于齐次泊松点过程的节点分布模型,在不同的衰落信道模型下推导了网络无孤立点概率的闭型表达式,用作网络连通概率的上界。特别分析了对数正态阴影衰落和瑞利衰落信道的相关物理参数对连通性的影响。此外,还讨论了协作通信对于网络连通性能的提高作用。最后,在仿真构造的无线网络中测试得到的连通性能的仿真值与理论分析结果吻合。

By assuming the deployment of nodes a homogeneous Poisson point process,closed-formed expressions of network non-isolation probability were derived under different fading channel models,as the upper bound of 1-connectivity probability,with particular emphasis on the effects of lognormal shadowing and Rayleigh fading.The impact of cooperative communication was also addressed,showing how it can be used to enhance the network connectivity.Finally,numerical simulations in synthetic wireless network scenarios show a satisfying consistence between the theoretical findings and simulation results.