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Mitigation of Co-Channel Interference in Bluetooth Piconets

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3 Author(s)
Seung-Hwan Lee ; Institute of New Media and Communications, Seoul National University, San 56-1 Shillim-dong Kwanak-Ku Seoul 151-742 Korea ; Hyung-Sin Kim ; Yong-Hwan Lee

In this letter, we consider the mitigation of co-channel interference in Bluetooth piconets. Prior to sending packets, the proposed scheme checks whether the next channel for the frequency hopping (FH) is in use by other signals or not. Then, it periodically detects busy channels subject to WLAN interference based on the packet error rate and interference signal detection rate in a group-wise manner and changes the set of hopping frequency. For further provision of channels for the FH, it maximized the number of channels for the FH by detecting additional channels which belong to groups classifies as being interrupted by WLAN, but not being used. The analytic design and simulation results show that the proposed scheme is quite robust to the presence of multiple WLAN and other Bluetooth signals, compared to the conventional mitigation schemes.

Published in:

IEEE Transactions on Wireless Communications  (Volume:11 ,  Issue: 4 )