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. 2017 Jan 17;7:40480. doi: 10.1038/srep40480

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(a) EVMs and related constellation plots of 16-QAM OFDM data at different bandwidths transmitted through tap-water over 1.7 m. (b) Subcarrier SNRs and corresponding constellation plots of 12-Gbps 16-QAM OFDM data after 1.7-m transmission under tap-water. (c) EVMs of 12.4-Gbps 16-QAM OFDM data after 1.7-m underwater transmission. (d) Subcarrier SNR spectra and related constellation plots of 1.7-m tap-water transmitted 12.4-Gbps 16-QAM OFDM data without and with pre-leveling.