OFDM Channel Estimate block?

GNU Radio
1

Hi guys,

Thanks in advance. Can anyone tell me where the channel estimate block
is
in ofdm example? I want to extract the channel estimate value *H
*I am trying to locate it, but still get lost. I believe that it should
be
after FFT process, is that right?

Best,
Kay

2

On Mon, Mar 18, 2013 at 9:31 AM, Yingjie C. [email protected] wrote:

Hi guys,

Thanks in advance. Can anyone tell me where the channel estimate block is in
ofdm example? I want to extract the channel estimate value H
I am trying to locate it, but still get lost. I believe that it should be
after FFT process, is that right?

Best,
Kay

You will find it in the ofdm_frame_acquisition_impl.cc file in
gr-digital. There’s a ‘calculate_equalizer’ function in there that
produces a ‘d_hestimate’ variable, which should be what you are
looking for.

Tom