Mobility

Adaptive Frequency Hopping in Ad Hoc Networks With Rayleigh Fading and Imperfect Sensing

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Executive Summary

A probabilistic model for Adaptive Frequency Hopping (AFH) based wireless ad hoc networks with Rayleigh fading, where interference is due to self - and to slow-varying external interference, is proposed. Different AFH sensing techniques are studied in terms of Area Spectral Efficiency (ASE) and it is shown that self-interference can have a negative effect on the AFH mechanism. In particular, packet error rate and received signal strength sensing suffer when self-interference is high, while carrier detection based sensing remains robust. The proposed model further offers powerful means for system optimization.

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