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The Enhanced Adaptive Frequency Hopping (EAFH) mechanism improves the performance of frequency hopping-based wireless personal area networks (WPANs) under frequency-static and frequency-dynamic interference. The proposed mechanism monitors the overall packet error rate (PER) of the system to determine the right number of channels to be excluded from the hopset. Then based on the PER of individual channel, it decides whether to exclude a certain channel or not. EAFH could provide much higher throughput while still maintaining reasonably good channel occupancy.