On the Performance of Digital Resolution Enhancement and Waterfilling in Digital Subcarrier Multiplexing Systems with Low-Resolution DACs

Trung-Hien Nguyen, Youssef Nasser,Yu Zhao,Sami Mumtaz,Abel Lorences-Riesgo,Celestino S. Martins,Gabriel Charlet,Stefanos Dris

2022 OPTICAL FIBER COMMUNICATIONS CONFERENCE AND EXHIBITION (OFC)（2022）

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摘要

Digital resolution enhancement is experimentally demonstrated for 800G 107 Gbaud 8-carrier PCS-256QAM employing waterfilling. 1.4 dB SNR and 1 dB Q(2)-factor gains are obtained with a 4-bit DAC at 1.125 samples/symbol. (C) 2022 The Author(s)

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关键词

digital resolution enhancement,Gbaud 8-carrier PCS-256QAM employing waterfilling,1.4 dB SNR,1 dB Q2-factor gains,4-bit DAC,digital subcarrier multiplexing systems,low-resolution DACs,noise figure 1.4 dB

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