RE: Typical SNR of BT LE

Øyvind Karlsen — Fri, 12 Aug 2016 08:18:11 GMT

Hi,

In our datasheets we give this information in terms of sensitivity, ie. the weakest signal that can be received by the chip. For nRF51 this is -93 dBm and for nRF52 this is -96 dBm. This sensitivity is defined as the time the Bit Error Rate (BER) reaches 0.1%. The reason we give it this way is that the Bluetooth core spec defines it this way.

If you are particularly interested the SNR is given by the typical SNR for a Rician/Rayleigh channel with a proper K factor, the modulation is GFSK and the target BER should be 0.1%. This along with some overhead should net you the required SNR.

Best regards,

Øyvind