On Doped SC-LDPC Codes for Streaming

In streaming applications, doping improves the performance of spatially-coupled low-density parity-check (SC-LDPC) codes by creating reduced-degree check nodes in coupled chain. We formulate a scaling law to predict bit and block error rate periodically-doped semi-infinite SC-LDPC code ensembles streamed over binary erasure channel under sliding window decoding for given finite component length. The assumes that with some probability is equivalent full termination triggers two waves; otherwise, performs as if chain had not been doped at all. approximate use derived laws rates presence doping. proposed provides accurate predictions. further it show applications periodic can yield higher than same error-correcting performance.