[1] [1] ZHANG X, BABAR Z, PETROPOULOS P, et al. The evolution of optical OFDM[J]. IEEE communications surveys & tutorials, 2021, 23(3): 1430-1457.

[2] [2] ALRAKAH H T, GUTEMA T Z, SINANOVIC S, et al. PAPR reduction in DCO-OFDM based WDM VLC[J]. Journal of lightwave technology, 2022, 40(19): 6359-6365.

[3] [3] QIU J, WANG J L, LIAN J, et al. Clipping distortion analysis for DFT-precoded visible light communication OFDM systems with dimming control[J]. IEEE internet of things journal, 2024, 11(22): 37246-37256.

[4] [4] YANG T, LI G, LIU T, et al. Study of PAPR mitigation in OFDM-VLC system by SCMA codebook design[J]. Optoelectronics letters, 2024, 20(9): 543-548.

[5] [5] JIANG T, WU Y. An overview: peak-to-average power ratio reduction techniques for OFDM signals[J]. IEEE transactions on broadcasting, 2008, 54(2): 257-268.

[6] [6] LI H, JIANG Y, ZHU X. Power allocation for ACO-OFDM systems with upper clipping and limited bandwidth[C]//ICC 2024-IEEE International Conference on Communications, June 9-13, 2024, Denver, CO, USA. New York: IEEE, 2024: 3713-3718.

[7] [7] XIA L, WANG X, SUN Z, et al. Signal clipping at transmitter and receiver of O-OFDM for VLC under optical power constraint[J]. China communications, 2022, 19(6): 154-168.

[8] [8] LIN Y P, PHOONG S M. BER minimized OFDM systems with channel independent precoders[J]. IEEE transactions on signal processing, 2003, 15(9): 2369-2380.

[9] [9] AHMED M S, BOUSSAKTA S, SHARIF B S, et al. OFDM based on low complexity transform to increase multipath resilience and reduce PAPR[J]. IEEE transactions on signal processing, 2011, 59(12): 5994-6007.

[10] [10] HASAN M M. VLM precoded SLM technique for PAPR reduction in OFDM systems[J]. Wireless personal communications, 2013, 73: 791-801.

[11] [11] FENG Z, WU Q, TANG M, et al. Dispersion-tolerant DDO-OFDM system and simplified adaptive modulation scheme using CAZAC precoding[J]. Journal of lightwave technology, 2016, 34(11): 2743-2751.

[12] [12] DEEPA T, VAPPANGI S, MANI V V. Performance analysis of novel precoding matrix techniques for optical OFDM-based visible light communication systems[J]. Optics and laser technology, 2022, 154: 108293.

[13] [13] FAN Z, ZHAO J. Chirp-like polyphase sequence based discrete circulant transform spread OFDM for bandwidth-limited IM/DD systems[J]. Journal of lightwave technology, 2022, 40(8): 2283-2295.

[14] [14] WEN H, CHEN H, CHEN Q, et al. Performance enhanced dual-mode index modulation OFDM with OCT precoding in VLC systems[J]. Optics communications, 2023, 530: 129191.

[15] [15] SHARAN N, GHORAI S K. PAPR reduction and non-linearity alleviation using hybrid of precoding and companding in a visible light communication (VLC) system[J]. Optical and quantum electronics, 2022, 53(6): 304.

[16] [16] LI Y, DENG R, HE J, et al. DFT-spread combined with clipping method to reduce the PAPR in VLC-OFDM system[J]. Optoelectronics letters, 2017, 13(3): 229-232.

[17] [17] SEMPER S, RMER F, HOTZ T, et al. Sparsity order estimation from a single compressed observation vector[J]. IEEE transactions on signal processing, 2018, 66(15): 3958-3971.

[18] [18] LING X, WANG J, LIANG X, et al. Offset and power optimization for DCO-OFDM in visible light communication systems[J]. IEEE transactions on signal processing, 2016, 64(2): 349-363.

[19] [19] PROAKIS J G. Digital communications[M]. New York: McGraw Hill, 1995: 276-280.

[20] [20] STOICA P, HE H, LI J. New algorithms for designing unimodular sequences with good correlation properties[J]. IEEE transactions on signal processing, 2009, 57(4): 1415-1425.

[21] [21] HE J, XU L, ZHOU Z. Performance enhancement of W-band RoF system using 4D trellis coded modulation OFDM with precoding[J]. Journal of lightwave technology, 2022, 40(18): 6151-6157.

[22] [22] ZHU X D, ZHU G X, JIANG T. Reducing the peak-to-average power ratio using unitary matrix transformation[J]. IET communications, 2009, 3(2): 161-171.

[23] [23] KALI A, KHUNTIA B S, SABAT S L, et al. A low-complexity design for complex multiplication using radix-4 booth encoding[C]//2024 IEEE 4th International Conference on VLSI Systems, Architecture, Technology and Applications, May 17-18, 2024, Bangalore, India. New York: IEEE, 2024: 1-5.

[24] [24] TANG Y J, ZHANG X. Low-complexity parallel Chien search architecture based on Vandermonde matrix decomposition[J]. IEEE transactions on very large scale integration (VLSI) systems, 2024, 32(9): 1744-1748.