Enhanced reconstruction of NR-LDPC codes for high capacity PHz communication

Yidi Zhang; Ming Jiang

doi:10.1117/12.2585261

4 December 2020 Enhanced reconstruction of NR-LDPC codes for high capacity PHz communication

Yidi Zhang, Ming Jiang

Proceedings Volume 11617, International Conference on Optoelectronic and Microelectronic Technology and Application; 1161724 (2020) https://doi.org/10.1117/12.2585261
Event: International Conference on Optoelectronic and Microelectronic Technology and Application, 2020, Nanjing, China

Abstract

In this paper, we propose an enhanced reconstruction method of NR-LDPC codes for ultra-high capacity Petahertz (PHz) communications. We redesign the protograph of NR-LDPC codes by partially increasing column weights under BDD structure in the parity part and adjusting the column weights in the information part where the single diagonal in Raptor-like structure is reasonably maintained to guarantee the waterfall performance and linear complexity encoding. After that, the simplified EMPEG algorithm is used to optimize the shifting values of the non-zero positions in the new protograph, so that error floor can be further lowered with almost no performance loss at waterfall region. Simulation results show that the enhanced reconstructions of NR-LDPC codes with moderate block lengths can significantly lower the error floors from the BER of 10⁻⁷ to 10⁻¹⁰ or lower, which makes the NR-LDPC codes easily applicable for high capacity PHz communications.

Citation Download Citation

Yidi Zhang and Ming Jiang "Enhanced reconstruction of NR-LDPC codes for high capacity PHz communication", Proc. SPIE 11617, International Conference on Optoelectronic and Microelectronic Technology and Application, 1161724 (4 December 2020); https://doi.org/10.1117/12.2585261

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