[2] CHEN C, FU S, JIAN X, et al. NOMA for energy-efficient LiFi-enabled bidirectional IoT communication[J]. IEEE Trans, 2021, 69: 1693-1706.
[4] CHEN C, NIE Y G, LIN M, et al. Digital pre-equalization for OFDM-based VLC systems: centralized or distributed[J]. IEEE Photonics Technology Letters, 2021, 33: 1081-1084.
[5] HAIGH P A, ZVANOVEC G, CHVOJKA P, et al. Multi-band carrier-less amplitude and phase modulation for bandlimited visible light communications systems[J]. IEEE Wireless Communications, 2015, 22: 46-53.
[6] HE J, HE J, SHI J. An enhanced adaptive scheme with pairwise coding for OFDM-VLC system[J]. IEEE Photonics Technology Letters, 2018, 30: 1254-1257.
[7] SHI J, HE J, HONG Y, et al. Performance-enhanced NOMA-VLC using subcarrier pairwise coding[J]. Optics Communications, 2019, 450: 141-146.
[8] OLANREWAJU. HAMMED G, THOMPSON J, et al. Pairwise coding for MIMO-OFDM visible light communication[J]. IEEE Transactions on Wireless Communications, 2020, 19: 1210-1220.