Interleaved Cyclic Group Decomposition Length Adaptive MET QC-LDPC Codes

Abstract

We introduce quasi-cyclic extension method for performance improving of the length adaptive Multi-Edge Type (MET) Quasi-cyclic LDPC (QC-LDPC) codes below the Block Error Rate (BLER) 10−5. Proposed method allows to construct MET QC-LDPC Codes for variable code length with the modular lifting of 5G eMBB Base Graph 2. Simulation results under 50 iterations of sum-product decoding over an AWGN channel with QPSK modulation are provided. It shows near same performance for information length k < 600 and from 0.1 – 0.3 dB gain on k > 600 compared with 5G eMBB codes.