跳频Ad Hoc网络容量分析

The analysis on transmission capacity of frequency hopping Ad Hoc networks

网络信息理论研究表明,Ad Hoc网络的信息传输能力受限于节点之间无序的传输干扰,而增加使用带宽可以缓解这种传输干扰。跳频Ad Hoc网络作为一种增加使用带宽的网络构建方式,可有效减轻网络中节点无序传输所引起干扰,与直扩网络相比具有更好的容量改善效果。本文以随机点过程分析为基础,对跳频Ad Hoc网络的信息传输能力进行分析,推导了其容量的上界和下界,讨论了可用频率数对网络容量的影响。

The research on network information theory demonstrates that the information transmission capacity of Ad Hoc network is constrained by the out-of-order transmission interference among nodes, which can be mitigated by increasing available bands. Frequency hopping Ad Hoc network, as a mean of constructing network for increasing available bands, can effective mitigate the interference caused by the out-of-order transmission among nodes, and it improves network capacity better than direct sequence spread spectrum Ad Hoc network. Based on analysis of stochastic Poisson point process, we analyze the information transmission capacity of frequency hopping Ad Hoc network, derive upper and lower bounds on the network capacity, and discuss the effect of spreading factor on the network capacity.