Clipping-Free Multilayer Optical OFDM for IM/DD-based Communication Systems

Hongxu Wang; Huixin Zhang; Zabih Ghassemlooy; Tian Zhang

doi:10.1109/tcomm.2023.3264864

Clipping-Free Multilayer Optical OFDM for IM/DD-based Communication Systems

Hongxu Wang, Huixin Zhang, Zabih Ghassemlooy, Tian Zhang^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

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Abstract

A low-complexity and high-performance clipping-free multilayer optical orthogonal frequency division multiplexing scheme is proposed for optical wireless communication (OWC). At the transmitter, the symbols of multi-layer quadrature amplitude modulation (QAM) are first arranged according to a specific rule in the frequency domain to generate a bipolar time-domain signal using a single inverse fast Fourier transform (IFFT). Then the bipolar signal is superimposed with an adaptive periodic DC bias to meet the real and positive requirements in intensity modulation / direct detection (IM/DD) systems. At the receiver, a zero-value regression (Re0) -based demodulation is proposed to optimize the bit error rate (BER). As the signal generation and demodulation are realized by single IFFT and fast Fourier transform (FFT) respectively, the proposed scheme has nearly the same system complexity as the single-layer modulations and similar spectral efficiency with those advanced multilayer modulations. In addition, the proposed periodic DC improves the power efficiency and avoids the interlayer interference. Numerical simulation results show that, compared with LACO-OFDM [34] with 3 layers, the proposed scheme can attain a PAPR gain of 2.4 dB and BER gain of 1.4 dB and 3 dB for the linear and nonlinear channel, respectively.

Original language	English
Pages (from-to)	3469-3480
Number of pages	12
Journal	IEEE Transactions on Communications
Volume	71
Issue number	6
Early online date	5 Apr 2023
DOIs	https://doi.org/10.1109/tcomm.2023.3264864
Publication status	Published - 1 Jun 2023

Keywords

Optical wireless communication
bit error rate
complexity
peak-to-average power ratio
spectral efficiency

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Clipping-Free_Multilayer_Optical_OFDM_for_IM_DD-based_Communication_SystemsAccepted author manuscript, 1.77 MB

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title = "Clipping-Free Multilayer Optical OFDM for IM/DD-based Communication Systems",

abstract = "A low-complexity and high-performance clipping-free multilayer optical orthogonal frequency division multiplexing scheme is proposed for optical wireless communication (OWC). At the transmitter, the symbols of multi-layer quadrature amplitude modulation (QAM) are first arranged according to a specific rule in the frequency domain to generate a bipolar time-domain signal using a single inverse fast Fourier transform (IFFT). Then the bipolar signal is superimposed with an adaptive periodic DC bias to meet the real and positive requirements in intensity modulation / direct detection (IM/DD) systems. At the receiver, a zero-value regression (Re0) -based demodulation is proposed to optimize the bit error rate (BER). As the signal generation and demodulation are realized by single IFFT and fast Fourier transform (FFT) respectively, the proposed scheme has nearly the same system complexity as the single-layer modulations and similar spectral efficiency with those advanced multilayer modulations. In addition, the proposed periodic DC improves the power efficiency and avoids the interlayer interference. Numerical simulation results show that, compared with LACO-OFDM [34] with 3 layers, the proposed scheme can attain a PAPR gain of 2.4 dB and BER gain of 1.4 dB and 3 dB for the linear and nonlinear channel, respectively.",

keywords = "Optical wireless communication, bit error rate, complexity, peak-to-average power ratio, spectral efficiency",

author = "Hongxu Wang and Huixin Zhang and Zabih Ghassemlooy and Tian Zhang",

note = "Funding information: This work was supported in part by the scientific research Project of Education Department of Jilin Province under Grant JJKH20231294KJ, in part by the National Natural Science Foundation of China under Grant 11905028, and in part by the Foundation for Excellent Young Talents of Jilin Province under Grant 20190103010JH.",

year = "2023",

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doi = "10.1109/tcomm.2023.3264864",

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TY - JOUR

T1 - Clipping-Free Multilayer Optical OFDM for IM/DD-based Communication Systems

AU - Wang, Hongxu

AU - Zhang, Huixin

AU - Ghassemlooy, Zabih

AU - Zhang, Tian

N1 - Funding information: This work was supported in part by the scientific research Project of Education Department of Jilin Province under Grant JJKH20231294KJ, in part by the National Natural Science Foundation of China under Grant 11905028, and in part by the Foundation for Excellent Young Talents of Jilin Province under Grant 20190103010JH.

PY - 2023/6/1

Y1 - 2023/6/1

N2 - A low-complexity and high-performance clipping-free multilayer optical orthogonal frequency division multiplexing scheme is proposed for optical wireless communication (OWC). At the transmitter, the symbols of multi-layer quadrature amplitude modulation (QAM) are first arranged according to a specific rule in the frequency domain to generate a bipolar time-domain signal using a single inverse fast Fourier transform (IFFT). Then the bipolar signal is superimposed with an adaptive periodic DC bias to meet the real and positive requirements in intensity modulation / direct detection (IM/DD) systems. At the receiver, a zero-value regression (Re0) -based demodulation is proposed to optimize the bit error rate (BER). As the signal generation and demodulation are realized by single IFFT and fast Fourier transform (FFT) respectively, the proposed scheme has nearly the same system complexity as the single-layer modulations and similar spectral efficiency with those advanced multilayer modulations. In addition, the proposed periodic DC improves the power efficiency and avoids the interlayer interference. Numerical simulation results show that, compared with LACO-OFDM [34] with 3 layers, the proposed scheme can attain a PAPR gain of 2.4 dB and BER gain of 1.4 dB and 3 dB for the linear and nonlinear channel, respectively.

AB - A low-complexity and high-performance clipping-free multilayer optical orthogonal frequency division multiplexing scheme is proposed for optical wireless communication (OWC). At the transmitter, the symbols of multi-layer quadrature amplitude modulation (QAM) are first arranged according to a specific rule in the frequency domain to generate a bipolar time-domain signal using a single inverse fast Fourier transform (IFFT). Then the bipolar signal is superimposed with an adaptive periodic DC bias to meet the real and positive requirements in intensity modulation / direct detection (IM/DD) systems. At the receiver, a zero-value regression (Re0) -based demodulation is proposed to optimize the bit error rate (BER). As the signal generation and demodulation are realized by single IFFT and fast Fourier transform (FFT) respectively, the proposed scheme has nearly the same system complexity as the single-layer modulations and similar spectral efficiency with those advanced multilayer modulations. In addition, the proposed periodic DC improves the power efficiency and avoids the interlayer interference. Numerical simulation results show that, compared with LACO-OFDM [34] with 3 layers, the proposed scheme can attain a PAPR gain of 2.4 dB and BER gain of 1.4 dB and 3 dB for the linear and nonlinear channel, respectively.

KW - Optical wireless communication

KW - bit error rate

KW - complexity

KW - peak-to-average power ratio

KW - spectral efficiency

UR - https://www.scopus.com/pages/publications/85153348209

U2 - 10.1109/tcomm.2023.3264864

DO - 10.1109/tcomm.2023.3264864

M3 - Article

SN - 0090-6778

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SP - 3469

EP - 3480

JO - IEEE Transactions on Communications

JF - IEEE Transactions on Communications

IS - 6

ER -

Clipping-Free Multilayer Optical OFDM for IM/DD-based Communication Systems

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