State integrated Look-up table assisted BCJR scheme with significant complexity optimization in bandwidth-limited optical interconnection
Year: 2025
Type: article
Abstract: A Bahl-Cocke-Jelinek-Raviv detection scheme employing a state-integrated look-up table (SiLUT-BCJR) is proposed and experimentally demonstrated in a bandwidth-efficient intensity modulation/direct detection (IM/DD) optical interconnection system. A merging approach for intermediate symbols is utilized to integrate LUT patterns, efficiently simplifying the counting paths for adjacent preceding and succeeding symbols suffering from inter-symbol interference (ISI) impairment. Consequently, the computational probabilistic load for subsequent BCJR is significantly optimized, as well as the computational complexity. The experiments validated in a 160 Git/s PAM4 interconnection system over single-mode fiber (SMF) transmission demonstrate that the proposed SiLUT-BCJR reduces computational complexity by 75% compared to traditional LUT-BCJR, with negligible optical power penalty.
Source: Optics Express
DOI: 10.1364/oe.573019
Authors: Shaonan Liu, Jun Ming, Hailian He, Yujia Mu, Junyuan Song, Rui Wang, Zhipei Li, Xiaolong Pan, Xiangjun Xin, Ze Dong
Language: English
Topic: Optical Network Technologies
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,270
Awards: G1842608977, G4186972342, G7699684898
OpenAlex ID: W4414144440