function output=cnv_encd(g,k0,input)%  		cnv_encd(g,k0,input)%  		determines the output sequence of a binary convolutional encoder%  		g is the generator matrix of the convolutional code%        	with n0 rows and l*k0 columns. Its rows are g1,g2,...,gn.%  		k0 is the number of bits entering the encoder at each clock cycle.%  		input The binary input seq.%  check to see if extra zero padding is necessaryif rem(length(input),k0) > 0  input=[input,zeros(size(1:k0-rem(length(input),k0)))];endn=length(input)/k0;%  check the size of matrix gif rem(size(g,2),k0) > 0  error('Error, g is not of the right size.')end%  determine l and n0l=size(g,2)/k0;n0=size(g,1);%  add extra zerosu=[zeros(size(1:(l-1)*k0)),input,zeros(size(1:(l-1)*k0))];%  generate uu, a matrix whose columns are the contents of %  conv. encoder at various clock cycles.u1=u(l*k0:-1:1);for i=1:n+l-2  u1=[u1,u((i+l)*k0:-1:i*k0+1)];enduu=reshape(u1,l*k0,n+l-1);%  determine the outputoutput=reshape(rem(g*uu,2),1,n0*(l+n-1));