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FaheenTomosiline
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How to mitigate WiFi-Bluetooth interference?

Wed Mar 01, 2023 11:18 am

What are the wireless networking components that can be used to reduce or mitigate interference between WiFi and Bluetooth signals?
 
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mkx
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Re: How to mitigate WiFi-Bluetooth interference?

Wed Mar 01, 2023 3:11 pm

None. The interference happens because both protocols use same open/free radio spectrum. There's no physical property of radio transmitter/receiver that can deal with in-band interference and the possibilities to filter out interference, which is not using same technology, are limited. E.g. typical non-MT WiFi AP and station will not detect MT AP using NV2 protocol ... and won't be able to effectively deal with interference which is caused by that.

The good thing about mentioned technologies combination (BT and WiFi) is that they use very different width of frequency bands: WiFi uses 20Mhz, BT uses 1MHz. Also both have some error correction mechanisms built in which somehow help with interference mitigation. Another nice feature of BT is that it uses frequency hopping which means that BT messes with WiFi only for short periods of time (then it uses another channel, hopefully outside of currently interfered WiFi channel). At the same time strong WiFi messes with BT only during same period of time, when BT hops to different channel it hopefully won't be interfered.

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