cp0201_depuncture.m

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function depunctured_bits = cp0201_depuncture(re_inter_bits)

 punc_patt=[1 3 4 7 9 12 13 15];
   punc_patt_size = 15;
numbits=1024;
[bits]=cp0201_bits(numbits);
message=bits;
[encoded_sequence]=cp0201_convlenc(message);
in_bits=encoded_sequence
punctured_bits = cp0201_puncture(in_bits);
inter_bits=cp0201_Interleaver(punctured_bits);
[S,Sc,Ss] = cp0203_qpsk_mod(inter_bits);
re_inter_bits=cp0201_deinter(S);
   
   
   
% Remainder bits are the bits in the and of the packet that are not integer mulitple of the puncture window size
num_rem_bits = rem(length(re_inter_bits), length(punc_patt));

depuncture_table = zeros(punc_patt_size, fix(length(re_inter_bits)/length(punc_patt)));

depunc_bits = reshape(re_inter_bits(1:length(re_inter_bits)-num_rem_bits), length(punc_patt), ...
   fix(length(re_inter_bits)/length(punc_patt)));

depuncture_table(punc_patt,:) = depuncture_table(punc_patt,:) + depunc_bits;

%puncture the remainder bits
rem_bits = re_inter_bits(length(re_inter_bits)-num_rem_bits+1:length(re_inter_bits));
rem_depunc_bits = zeros(1,punc_patt_size);

rem_depunc_bits(punc_patt(1:num_rem_bits)) = rem_depunc_bits(punc_patt(1:num_rem_bits)) + rem_bits;

depunctured_bits = [depuncture_table(:)' rem_depunc_bits];