Interference analysis of 3G/ad hoc integrated network

A C3G-A network integrating the 3G network and the ad hoc network is proposed. In such C3G-A network, 3G and ad hoc networks adopt the same frequency bands, which result in additional interference for each other. In this study, an interference model of the C3G-A network is presented. Based on this model, the effects of the interference on network capacity are analysed. Meanwhile, the corresponding formulae of network capacity are deduced. It is observed from extensive simulation and numerical analysis that network capacity is seriously affected by the additional interference. In order to suppress the effects of the additional interference, an algorithm based on distance (ABD) is proposed so as to decrease the additional interference and maximise network capacity. The simulation results show that the ABD algorithm can effectively overcome the effects of the additional interference and approximate network capacity in the 3G network and the ad hoc network with different frequency bands.

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