How to measure ber and snr

GNU Radio
1

hi ,
how to measure ber and snr in gnuradio ?is there any blocks about this?
thanks,
bzs

2

Hi BZS,

haven’t seen you in a long time! Welcome back :slight_smile:

If you use the search tool in gnuradio-companion, you will find the BER
block, which has two inputs and will output an BER measurement.

SNR is highly dependent on what you consider to be signal and what you
consider to be noise, so for most cases you will have to make your own
Signal Power measurement and divide that by a noise power estimate.

Greetings,
Marcus

3

On 07/11/2014 09:31 AM, Marcus M. wrote:

Hi BZS,

haven’t seen you in a long time! Welcome back :slight_smile:

If you use the search tool in gnuradio-companion, you will find the BER
block, which has two inputs and will output an BER measurement.

SNR is highly dependent on what you consider to be signal and what you
consider to be noise, so for most cases you will have to make your own
Signal Power measurement and divide that by a noise power estimate.

That said, we have SNR estimators for certain modulations. Check the
manual, and make sure you have a basic grasp of the underlying theory
before you use them.

M