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Ultra-wideband (UWB) should not be introduced in the 3.4GHz band until “detect and avoid” systems have been proven and implemented to avoid interference with broadband fixed wireless access (BFWA) systems, according to Ofcom.

The UK's telecoms watchdog has recommended this course of action following the publication of a technical report on...

Ultra-wideband (UWB) should not be introduced in the 3.4GHz band until “detect and avoid” systems have been proven and implemented to avoid interference with broadband fixed wireless access (BFWA) systems, according to Ofcom.

The UK's telecoms watchdog has recommended this course of action following the publication of a technical report on interference between UWB and BFWA.

The report found that without any form of mitigation, UWB could cause significant interference to BFWA systems.

For users of both technologies the interference would make BFWA unusable. This might make BFWA economically unviable, with the net cost to the UK economy estimated to be £300m.

It concluded that moving UWB devices to higher frequency bands, either by regulatory measure or in response to detection, has the potential to reduce the interference substantially. The proposed detect and avoid technology searches for nearby BFWA signals and if detected automatically switches the UWB device to another frequency.

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