Calculate SNR from packet error rate on micro-controller unit

1. How is SNR calculated?
2. What is the relation between bit error rate and SNR?
3. How to calculate SNR in Matlab?
4. Which SNR is relevant for bit error rate?

How is SNR calculated?

Furthermore, for power, SNR = 20 log (S ÷ N) and for voltage, SNR = 10 log (S ÷ N). Also, the resulting calculation is the SNR in decibels. For example, your measured noise value (N) is 2 microvolts, and your signal (S) is 300 millivolts.

What is the relation between bit error rate and SNR?

– Bit error rate is related to SNR. Higher SNR means lower BER. – Bit error rate is also related to #bits/symbol. More #bits/symbol increases bit rate, but also increases BER.

How to calculate SNR in Matlab?

r = snr( xi , y ) returns the signal-to-noise ratio (SNR) in decibels of a signal, xi , by computing the ratio of its summed squared magnitude to that of the noise y : r = mag2db ( rssq ( xi (:))/ rssq ( y (:))) .

Which SNR is relevant for bit error rate?

The Bit Error Rate (BER) is the number of acceptable errors you are prepared to tolerate. This is typically a number between 0.1 (every 10th bit is bad!) and 0.000001 (Only one in a million is bad). This ratio is closely linked to the Signal-to-Noise-Ratio (SNR) which is measured in decibels (dB).