064     sym_since_est = 1;
0065     
0066     <span class="comment">% SNR estimation</span>
0067     i_rx = 1;
0068     <span class="comment">% TODO: estimate SNR also for multiple RX chains</span>
0069     <span class="comment">% TODO: estimate SNR individually for each 10 MHz subchannel</span>
0070     snr_avg = 2/(mean(abs(wf_in_ltf(1:64*n_chan_rx,i_rx) - wf_in_ltf(64*n_chan_rx+1:128*n_chan_rx,i_rx)).^2));
0071     
0072     <span class="comment">% Initial L-SIG reception</span>
0073     wf_in = rx_wf(id