Directed Percolation in Wireless Networks with Interference and Noise

Details Directed Percolation in Wireless Networks with Interference and Noise Directed Percolation in Wireless Networks with Interference and Noise

2007-12-14

arxiv.org/abs/0712.2469v1

Computer Science

Information Theory

Scientific paper

Previous studies of connectivity in wireless networks have focused on undirected geometric graphs. More sophisticated models such as Signal-to-Interference-and-Noise-Ratio (SINR) model, however, usually leads to directed graphs. In this paper, we study percolation processes in wireless networks modelled by directed SINR graphs. We first investigate interference-free networks, where we define four types of phase transitions and show that they take place at the same time. By coupling the directed SINR graph with two other undirected SINR graphs, we further obtain analytical upper and lower bounds on the critical density. Then, we show that with interference, percolation in directed SINR graphs depends not only on the density but also on the inverse system processing gain. We also provide bounds on the critical value of the inverse system processing gain.

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