This paper deals with the problem of devising an efficient framework for constructing rate-compatible low-density parity-check (RC-LDPC) codes. We present a deterministic framework for constructing a family of linear-time encodable RC-LDPC codes from a mother code using puncturing and extending. Application of the proposed construction to a type-II hybrid ARQ scheme with information block length k=1024 and code rates 8/19 to 8/10, using an optimized irregular mother code of rate 8/13, results in a throughput which is only about 0.7dB away from Shannon limit. This outperforms existing similar schemes based on turbo codes and LDPC codes by up to 0.5dB.

Additional Metadata
Keywords Extending, Hybrid ARO schemes, Iterative coding schemes, LDPC codes, Puncturing, Rate-compatible codes, Rate-compatible low-density parity-check (RC-LDPC) codes
Conference 2004 IEEE International Conference on Communications
Citation
Yazdani, M. (Mohammadreza), & Banihashemi, A. (2004). On construction of rate-compatible low-density parity-check codes. In IEEE International Conference on Communications (pp. 430–434).