Convolution

GNU Radio
1

Hi. I’m new to GNU Radio but have experience with basic DSP (using
MATLAB for instance). Which blocks can I use to do these simple
tasks:

  1. Convolution with an arbitrary (constant) wave in the time domain?
    Example: I provide the wave as a fixed series of constants, I’d like
    to convolute with it.

  2. The same thing in the frequency domain?

2

On Sun, Nov 17, 2013 at 8:32 AM, Robert J. [email protected]
wrote:

Hi. I’m new to GNU Radio but have experience with basic DSP (using
MATLAB for instance). Which blocks can I use to do these simple
tasks:

  1. Convolution with an arbitrary (constant) wave in the time domain?
    Example: I provide the wave as a fixed series of constants, I’d like
    to convolute with it.

  2. The same thing in the frequency domain?

The fir_filter_XXX does time-domain convolution. You’d pass it a
decimation of 1 and the taps would be the signal you want to convolve
against.

The fft_filter_XXX does fast convolution in the frequency domain.

http://gnuradio.org/doc/doxygen/page_filter.html

Tom