Journal
IEEE TRANSACTIONS ON INFORMATION THEORY
Volume 50, Issue 11, Pages 2824-2836Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TIT.2004.836667
Keywords
capacity-approaching code; low-density parity-check (LDPC) code; puncturing
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In this correspondence, we consider puncturing of low-density parity-check (LDPC) codes for additive white Gaussian noise (AWGN) channels. We show that good puncturing patterns exist and that the puncturing can be performed in a rate-compatible fashion. Furthermore, rate-compatible puncturing results in a small loss of performance with respect to threshold, namely, the punctured code is good (in terms of threshold) across a range of rates when compared with the optimal codes for each rate. This allows one to implement a single mother encoder and decoder that is good across a wide range of rates.
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