Cost-Efficient Partially-Parallel LDPC Decoder Architecture for 50G-PON Standard

In this paper, we present a cost-efficient low-density parity-check (LDPC) decoder architecture tailored to meet the high throughput demands of 50G passive optical network (PON) systems. Building upon a previous layered decoder architecture, the complex multiplexing networks are specifically optimized for the PON LDPC codes, facilitating partially-parallel processing while minimizing congestion overheads. By incorporating advanced low-cost optimization schemes, the prototype PON LDPC decoder achieves a decoding throughput of 2.94 Gb/s, surpassing state-of-the-art approaches by 2.38-fold.