Adaptive bias layered optical OFDM based on precoding for IM/DD systems

Jia Lu, Nan Jia,Jie Ma,Jianfei Liu,Yaqi Hu, Yang Wang

Optical Fiber Technology（2023）

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摘要

•We propose an ABLO-OFDM scheme based on real-valued precoding in IM/DD system.•Multilayer subcarriers are superimposed to achieve high spectral efficiency.•Add adaptive bias to improve system power efficiency and reduce PAPR.•DCT and DHT precoding are added to improve the BER performance and reduce PAPR.•PAPR is reduced by up to 2.7 dB and receiver sensitivity is improved by 6 dB.

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关键词

Orthogonal frequency division multiplexing,Intensity modulation and direct detection,Adaptive bias,Real-valued precoding

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