Patent ID: 7203897

Claim:
A method for operating a transmitter that generates parity-check bits based on an information block, the method comprising the steps of: defining a base model matrix having a set of shift sizes p(i,j) for a largest code length; determining shift sizes p(f,i,j) for all other code lengths based on the set of shift sizes p(i,j), where f is an index of code lengths, p(f,i,j)=F(p(i,j),z 0 /z f ), z 0 is an expansion factor of the largest code length, z f is an expansion factor of the f-th code length; receiving the information block s=(s 0 , . . . , s k f −1 ); using a model matrix defined by p(f,i,j) to determine the parity-check bits; and transmitting the parity-check bits along with the information block.