Transmitter Impairment Mitigation by 8×2 Widely Linear MIMO Equalizer with Improved Frequency Offset Tolerance

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Xuemeng Hu, Zepeng Gong, PengPeng Wei, Fan Shi, Xiao Xiao, Tianye Huang, Xiang Li

Published: 01 Jan 2024, Last Modified: 12 Apr 2025OFC 2024EveryoneRevisionsBibTeXCC BY-SA 4.0
Abstract: Transmitter impairment mitigation for 45GBaud DP-64QAM with 8×2 WL MIMO equalizer embedding CW-DA-WL phase estimator is demonstrated. Q penalty less than 0.5-dB with 8-ps IQ skew and 2.5-dB power imbalance are achieved with improved tolerance to frequency offset.