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Optimizing Practical Adaptive Frequency Hopping and Medium Access Control in Ad Hoc Networks

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Executive Summary

Adaptive Frequency Hopping (AFH) as proposed, e.g., in IEEE 802.15.2 aims at increasing system reliability in the presence of quasi-static external interference. Practical approaches require autonomous sensing of the interference environment, with the measurements containing both external interference and network self-interference. In prior work, a simplistic model for AFH-based ad hoc networks was developed to analyze how this issue affects the Area Spectral Efficiency (ASE). It was found that the AFH mechanism severely degrades ASE when self-interference is increased.

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