Enhanced adaptive frequency hopping for wireless personal area networks in a coexistence environment

David S L Wei, Chia-Chun Hsu, C. -C. Jay Kuo, Norio Shiratori, Chung-Ju Chang

Research output: Contribution to conferencePaperpeer-review

25 Scopus citations


In this paper, we present an enhanced adaptive frequency hopping (EAFH) mechanism for improving 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. Finally, proper packet length is associated with those channels remaining in the hopset. These decisions, which pertain to hopset size and packet length, are made so as to optimize the performance of the hopping system in a coexistence environment. We developed an analytical model to justify the behavior and performance of the proposed mechanism. Simulations are conducted under an environment of some collocated Bluetooth (BT) piconets and a Wi-Fi network to validate the developed model and show the superiority of EAFH. Simulation results show that, compared with those existing mechanisms including orthogonal hopset-based mechanisms, EAFH could provide much higher throughput while still maintaining reasonably good channel occupancy.
Original languageEnglish
StatePublished - Nov 2007
EventIEEE Global Telecommunications Conference (GLOBECOM 07) - Washington, DC, United States
Duration: 26 Nov 200730 Nov 2007


ConferenceIEEE Global Telecommunications Conference (GLOBECOM 07)
CountryUnited States
CityWashington, DC

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