% ch
recv = xmit;	% channel is applied to recv, don't modify transmitted data
if channel_on == 1
	disp('Simulating Channel')
	norm_factor = max(abs(recv));	% Normalize all data before applying
	recv = (1/norm_factor) * recv;	% channel for a fair comparison
	ch_clipping                     %clipp data
	ch_multipath                    %
	ch_noise                        %
	recv = norm_factor * recv;		% Restore data magnitude for proper decoding
end