B_SIG_CFG.mcs ~= 0)    <span class="comment">% L-SIG MCS must be 0 in NGV transmissions</span>
0113             err = 2;
0114             <span class="keyword">return</span>
0115         <span class="keyword">end</span>
0116         
0117         <span class="comment">% NGV-SIG samples</span>
0118         wf_in = rx_wf(idx0:idx0 + 80*n_chan_rx-1,:);
0119         prev_cfo_corr = r_cfo * sym_since_est;
0120         new_cfo_weight = 0.5;
0121         [x_p2, x_d2_cfo, snr2, r_phase_diff2] = <a href="sig_pre_rx.