On the error-correcting capability of LDPC codes
Problems of Information Transmission
IEEE Transactions on Circuits and Systems Part I: Regular Papers
Distance bounds for periodically time-varying and tail-biting LDPC convolutional codes
IEEE Transactions on Information Theory
Iterative decoding threshold analysis for LDPC convolutional codes
IEEE Transactions on Information Theory
Hi-index | 754.96 |
An ensemble of (J, K) -regular low-density parity-check (LDPC) convolutional codes is introduced and existence-type lower bounds on the minimum distance dL, of code segments of finite length L and on the free distance dfree are derived. For sufficiently large constraint lengths v, the distances are shown to grow linearly with v and the ratio dL/v approaches the ratio dfee/v for large L. Moreover, the ratio of free distance to constraint length is several times larger than the ratio of minimum distance to block length for Gallager's ensemble of (J, K) -regular LDPC block codes.