 <span class="keyword">if</span> (ppdu_fmt == 2)
0030     <span class="comment">% Interleaver has the same effect as the LDPC tone mapper</span>
0031     <span class="comment">% Note: LDPC tone mapper might be removed from 802.11bd</span>
0032     <span class="comment">% TODO: verify if this is still necessary</span>
0033     <span class="keyword">if</span> (n_chan == 1)
0034         n_col = 13;
0035         n_row = 4*n_bpscs;
0036     <span class="keyword">elseif</span> (n_chan == 2)
0037         n_col = 1