[TuP4-B] Poster Session 1

[TuP4-B14] A Simplified LLR of SD-LDPC for Probabilistically Shaped QAM Constellation

Wenjing Zhang¹, Shaohua Hu¹, 〇Jing Zhang¹, Xingwen Yi², Kun Qiu¹ (¹Univ. of Electronic Science and Technology of China, China, ²Sun Yat-Sen Univ., China)

Keywords:Coding and forward error correction for optical communications , Digital signal processing techniques for optical communications

We present a simplified log likelihood ratio (LLR) for LDPC decoding and compare the post-FEC BER performances of PS-16QAM in coherent optical communications systems. The improvement of post-FEC BER is 1.17dB for PS-16QAM.