Re: [Discuss-gnuradio] SNR of ADC

[Fernando Peral]

I think that since  in the scenario you are describing there is all virtual there is no ADC but the round aproximation from the cos(t) function to a fixed number of bits used to represent the number with a float the computer is using, so the noise you can see in the FFT is the is indeed a quantization error altough not related to any ADC. 
If you hace more blocks like an adder, a multiply, etc. The noise will be the result of all the mathematical operations involved in the process using finite bits.

regards



El 28/02/17 a las 14:53, Sagnik Basu escribió:

Hi.

I just have a thought - when we use a signal source block to generate a sine wave and use the FFT block to visualize the power spectrum, then the noise floor we see at the FFT window - is it the quantization error of the ADC within the PC running GNURadio?

Regards,

Sagnik Basu

B. Tech | 2013-2017
Dept. of Electronics and Communication
NIT Rourkela
M: 8337942928

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