Performance-Enhanced Optical Non-Orthogonal Multiple Access Enabled by Orthogonal Chirp Division Multiplexing

Liu, Bo; Ren, Jiadong; Ullah, Rahat; Mao, Yaya; Zhu, Suiyao; Chen, Shuaidong; Wu, Xiangyu; Wang, Feng; Sun, Tingting; Wu, Yongfeng; Zhao, Lilong

doi:10.1109/jlt.2022.3176878

Cited by 17 publications

(3 citation statements)

References 36 publications

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“…It has been demonstrated that OCDM outperforms OFDM by offering a more robust channel frequency selection. In [22], the authors proposed a time-domain reflectometry method for power line detection based on the OCDM technique. The presented multiple access system was slightly outperformed by Hermitian symmetric orthogonal frequency division multiplexing (HS-OFDM) based on code-division multiple accesses.…”

Section: A Prior Workmentioning

confidence: 99%

Transceiver Design for 6G Compatible CP-less Multi-User Orthogonal Chirp Division Multiplexing System with Physical Layer Security

Faruk¹,

Hossain²,

Ullah³

et al. 2023

Preprint

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<p>The strength of the attenuated received signal and the 3D path loss in mmWave transmission are shown. To enhance spectral efficiency and transmission latency a CP-less OCDM system and to reduce both out-of-band (OOB) spectrum power and consumption of additional resources due to cyclic prefixing a proper subcarrier mapping is proposed.</p> <p>For achieving negligible BER and increased channel capacity a QR decomposition and Gram Schmidt orthogonalization (QR-GSO)-based multi-user, multiple-input, multiple-output (MU-MIMO) precoding system is also proposed in this paper.</p>

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Section: A Prior Workmentioning

confidence: 99%

Transceiver Design for 6G Compatible CP-less Multi-User Orthogonal Chirp Division Multiplexing System with Physical Layer Security

Faruk¹,

Hossain²,

Ullah³

et al. 2023

Preprint

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show abstract

“…Generally speaking, it has more 50% capacity than the QPSK signal and higher noise tolerance than the 16QAM signal. Various types of 8QAM signals have been investigated and experimented by many researchers in optical transmission systems [17]- [22]. Additionally, there have also been some reports talking about the all-optical format conversion (AOFC) and regeneration about standard shaped, star shaped and square shaped 8QAM signals, as shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

All-Optical Format Conversion for Rectangular 8QAM Signals Based on Phase-Sensitive Amplification and Nonlinear Mach-Zehnder Interferometer

Li,

Yang,

Wen

et al. 2024

IEEE Photonics J.

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An all-optical format conversion (AOFC) scheme for the input 30 Gbit/s rectangular 8-ary quadrature amplitude modulation (8QAM) signal is proposed and numerically investigated based on phase-sensitive amplification (PSA) and nonlinear Mach-Zehnder interferometer (MZI). Firstly, the input rectangular 8QAM signal is orthogonal decomposed into the inphase and quadrature components based on PSA, respectively. The in-phase component is the 4-ary amplitude and phase shift keying (4APSK) signal and the quadrature component is the binary phase shift keying (BPSK) signal. Secondly, the converted 4APSK signal is transmitted into one piece of highly nonlinear fiber (HNLF) to obtain the phase-distorted two-amplitude and two-phase (2A-2P) signal based on the self-phase modulation (SPM) effect. After adjusting the power of the 2A-2P signal, it is injected into one nonlinear MZI to eliminate the amplitude difference of the inner and the outer rings of the 2A-2P signal. The 2A-2P signal can be converted into the regular quadrature phase shift keying (QPSK) signal by the nonlinear MZI with phase preservation. Thirdly, the converted BPSK and QPSK signals are coherently superposed in one 3-dB optical coupler (OC) to get the aggregated rectangular 8QAM signal and other types of 8QAM signals. The proposed scheme can also be extended to realize the AOFC from the 16-ary quadrature amplitude modulation (16QAM) signal to two QPSK signals. The constellation diagrams, amplitude and phase histograms, error vector magnitude (EVM) and bit error rate (BER) of the relevant optical signals are measured to evaluate the system performance. The proposed scheme can be equipped with the optical gateway to enable all-optical interconnection of optical networks with different modulation formats.

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“…8QAM has better tolerance to the noise than 16QAM signals and higher information capacity than QPSK [3], [9], meaning that it has been widely implemented in 100 Gbps optical transmission systems and beyond [27]- [30]. The transmission performance of different 8QAM signals in a variety of optical transmission systems has also been investigated and compared [31]- [36]. AOFC of different 8QAM signals will be needed at optical network nodes when they are selected in different optical transmission systems.…”

Section: Introductionmentioning

confidence: 99%

Flexible All-Optical 8QAM Signal Format Conversion Using Pump Assisted Nonlinear Optical Loop Mirror

Yang

Wen

et al. 2023

J. Lightwave Technol.

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Performance-Enhanced Optical Non-Orthogonal Multiple Access Enabled by Orthogonal Chirp Division Multiplexing

Cited by 17 publications

References 36 publications

Transceiver Design for 6G Compatible CP-less Multi-User Orthogonal Chirp Division Multiplexing System with Physical Layer Security

Transceiver Design for 6G Compatible CP-less Multi-User Orthogonal Chirp Division Multiplexing System with Physical Layer Security

All-Optical Format Conversion for Rectangular 8QAM Signals Based on Phase-Sensitive Amplification and Nonlinear Mach-Zehnder Interferometer

Flexible All-Optical 8QAM Signal Format Conversion Using Pump Assisted Nonlinear Optical Loop Mirror

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