Forum Post: RE: Signal-to-noise ratio on cc2530

Hi Darshan,

hope this help

1) noise power at the receiver output (in dBm, subject to T = 300 K) is Pn = Pnoise+NF=-174+10log10(B)+NF

where B is the signal bandwidth given in Hz (for the IEEE 802.15.4 2450 MHz PHY equals to 3.5 MHz), NF is the noise factor presented in the corresponding datasheet.

2) subject to calculations with dBms, SNR = RSSI - Pn

Regards,

Ilya