AN ADAPTIVE FREQUENCY HOPPING ALGORITHM FOR THE COEXISTENCE OF BLUETOOTH AND WLAN

摘要

Bluetooth and WLAN (IEEE802.11b) are two complementary wireless technologies. Both Bluetooth and WLAN devices operate in the unlicensed 2.4 GHz ISM band, implicating a mutual interference between the two technologies. This paper presents a novel Adaptive Frequency Hopping (AFH) algorithm for a Bluetooth device to avoid interference between a WLAN channel and a Bluetooth piconet. We developed the AFH algorithm, and then implemented it in software using MATLAB. The simulation of the AFH algorithm produced promising results. Therefore, employing the AFH scheme, a 29% loss in the Bluetooth throughput and a 65% loss in the WLAN throughput were recovered. These losses are due to the mutual interference between Bluetooth and WLAN.