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Conferences > OFC > 2024 > Th3J > Th3J.2

Non-uniform Quantization and RUM for Optimizing Implementation of Real-Time FIR Equalization in Short-Reach Optical Links

Bohan Sang, Kaihui Wang, Luhan Jiang, Chen Wang, Yikai Wang, Jiaxuan Liu, Long Zhang, Jingtao Ge, Wen Zhou, and Jianjun Yu

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Abstract

We propose a low-complexity equalization scheme with non-uniform quantization and rotational update mechanism (RUM). The scheme is verified in implementation of DDLMS equalization for 92-Gbaud 10-km offline and 14.7456-Gbaud 25-km FPGA-based real time PA M4 IM/DD experimental transmission, results show up to 99.5% multiplications (DSP resource usage) are reduced comparing to normal DDLMS equalizer . A large number of equivalent taps can be achieved based on several active taps.

© 2024 The Author(s)

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