Hi all,
I have looked at the code of ofdm_frame_equalizer_vcvc_impl.cc and
I have a question about it.Thank you in advance.
To the payload route:
The frame_len for example is 9.I think we should shift all the 9
symbols respectively.To the below source gnuradio code,it have shifted all
the frame_len*d_fft_len in one time.
I think maybe it should like this:
for(int i=1;i<=9;i++)
{
shift_symbol(i)
}
....
// Copy the frame and the channel state vector such that the
symbols are shifted to the correct position
if (carrier_offset < 0) {
memset((void *) out, 0x00, sizeof(gr_complex) * (-carrier_offset));
memcpy(
(void *) &out[-carrier_offset], (void *) in,
sizeof(gr_complex) * (d_fft_len * frame_len + carrier_offset)
);
} else {
memset((void *) (out + d_fft_len * frame_len - carrier_offset), 0x00,
sizeof(gr_complex) * carrier_offset);
memcpy(
(void *) out, (void *) (in+carrier_offset),
sizeof(gr_complex) * (d_fft_len * frame_len - carrier_offset)
);
}
Thank you so much.
Best regards,
xd
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