Experimental research of adaptive OFDM and OCT precoding with a high SE for VLLC system

Liu, Shuang-ao; He, Jing; Chen, Qinghui; Deng, Rui; Zhou, Zhi‐Hua; Chen, Shenghai; Chen, Lin

doi:10.1016/j.yofte.2017.06.008

Cited by 8 publications

(1 citation statement)

References 13 publications

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“…Recently, the proposal of OCT-precoding scheme has improved the error code performance and equalized the signal-to-noise ratio of each data subcarrier in the signal [7][8][9]. en, the scheme based on the combination of OCTprecoding and adaptive modulation OFDM was studied in the fiber fusion laser visible light system [10]. OFDM signals based on rise code (RS) combined with the OCT-precoding scheme have been investigated in the fiber fusion laser visible light system.…”

Section: Introductionmentioning

confidence: 99%

OCT-Precoding Combined with LDPC-Coding Scheme for 128 QAM MB-OFDM UWBoF System

Xiang

Yang

Zhu

et al. 2020

Advances in Condensed Matter Physics

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In this paper, we proposed a coding scheme based on orthogonal cyclic transpose (OCT) precoding combined with low-density parity check (LDPC) code to improve the transmission performance of 128-quadrature amplitude modulation multiband orthogonal-frequency-division-multiplexing ultrawide band over fiber (128 QAM MB-OFDM UWBoF) system. The proposed scheme could not only improve the performance of the system but also average the signal-to-noise ratio (SNR) of subcarriers and reduce the difference among subchannels in practical application. The simulation results showed that compared with the traditional scheme, the receiver performance of this scheme was improved by 2.7 dB when the LDPC-coding rate was 87.5% through 70 km standard single mode fiber (SSMF) transmission and the bit error rate (BER) was 3.8 × 10−3. Besides, the constellation distribution was more convergent and uniform.

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