Extenuation of phase shift influenced nonlinear impairments in fiber optics network

Ali, Farman; Khan, Yousaf; Muhammad, Fazal; Habib, Usman; Abbas, Ziaul Haq; Khan, Maqsood Ahmad; Ali, Asar

doi:10.1002/ett.3930

Cited by 9 publications

(4 citation statements)

References 36 publications

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“…In other words, i = 2 and M = 2 define 4 QAM, i = 4 and M = 4 define 16 QAM, i = 6 and M = 8 define 64 QAM, and i = 8 and M = 16 define 256 QAM. In this research model, i = 4 and M = 4 along with i = 6 and M = 8 are analyzed [25]. The string of bits coming from the QAM are split into two cascaded arrays.…”

Section: Analytical Modelingmentioning

confidence: 99%

Mitigation of Phase Noise and Nonlinearities for High Capacity Radio-over-Fiber Links

et al. 2021

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Radio-over-fiber (RoF) links successfully provide high data rates and bandwidth capacity with a low complexity system architecture, as compared to its counterpart digital-RoF. In addition, the compound of quadrature amplitude modulation (QAM) and orthogonal frequency division multiplexed (OFDM) modulation schemes further enhance the process of these achievements. However, high data rates and bandwidth-capacity-supported RoF links face nonlinearities (NLs), linear distortions (LDs), and phase noise challenges that degrade the reliability of communication networks (CNs). Therefore, in this paper, to suppress NLs, LDs, and phase noise, next generation cloud radio access networks (CRANs) are investigated using RoF links and wavelength division multiplexing (WDM) methodology based on 16, 32, and 64 QAM-OFDM modulation schemes. The receiver of the proposed framework is designed, applying an improved digital signal processing (DSP) system that includes overlap frequency domain equalization (OFDE), a synchronization process, and time domain equalization (TDE). Theoretical and simulation models are organized for estimating the proposed RoF link with the aid of different values of transmission ranges, input power, output power, bit rate, bits per symbol, channel spacing, and the number of users. The fitness of the model matches that of existing approaches.

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Section: Analytical Modelingmentioning

confidence: 99%

Mitigation of Phase Noise and Nonlinearities for High Capacity Radio-over-Fiber Links

et al. 2021

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“…The ability to support error‐free high data rate transmission of optical network is directly related with the optical power at the receiver end. Increase in transmission capacity required addition of large number of data channels, which require high optical transmit power that leads to noise effects and system degradation due to Kerr nonlinearity, interference, and distortion of the transmitted signals for the UDWDM and long‐haul and ultrahigh speed optical transmission network (OTxN) 3 . These limitations impose an upper bound on the maximum effective optical signal‐to‐noise ratio (OSNR) of the link and reduce long‐haul and ultrahigh speed data rate transmission performance.…”

Section: Introductionmentioning

confidence: 99%

Alleviation of nonlinear channel effects in long‐haul and high‐capacity optical transmission networks

Ali

Habib

Muhammad

et al. 2021

Int J Communication

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Summary Optical transmission networks (OTxNs) provide a cost‐effective solution towards ultrahigh data intercontinental transmission. However, nonlinear effects such as four‐wave mixing (FWM) and cross‐phase modulation (XPM) are the major performance limiting factors for OTxNs. This paper proposes the use of differential quadrature phase shift keying (DQPSK) modulation format and uneven channel spacings for dispersion compensation and investigates the nonlinear mitigation performance for a 32 channels ultradense wavelength division multiplexing (UDWDM) with data rate of up to 10 Gbps per channel. In addition, this paper presents an analysis on power budget and power penalties with a cost benefit analysis (CBA) for the proposed framework. The transmission link of the proposed UDWDM model is analyzed in terms of bit error rate (BER) for various lengths of optical fiber in long‐haul transmission, launch power, nonlinear effective area, and nonlinear refractive index. The analytical model is developed for mitigation of nonlinearity for the modeled UDWDM long‐haul and ultrahigh‐capacity system, beyond 1200‐km path span. The simulation results show systems advantages of having narrower spectrum than on‐off‐keying (OOK) modulation, significant tolerance to nonlinearities and low cost, compared with current OTxNs with 2.8‐dB optical signal‐to‐noise ratio (OSNR) improvement and successful mitigation of nonlinearities for as high launch powers as +4 dBm for such long distance transmission in dispersive channel.

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“…To satisfy the requests of group of future heterogeneous ON, different multiple access user technologies have been recommended [2]. This is comprised of wavelength division multiplex (WDM) [3] dependent ONs, code division various access (CDMA) [1] in light of ONs, and time division numerous entrance (TDMA) [3] in view of ONs. The essential element of using WDM licenses an enormous expansion in limit and segregation colligated with explicit wavelength to every customer.…”

Section: Introductionmentioning

confidence: 99%

Derogation of Physical Layer Security Breaches in Maturing Heterogeneous Optical Networks

Armghan

2021

Electronics

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The evolution journey of optical network (ON) towards heterogeneous and flexible frameworks with high order of applications is continued from the last decade. Furthermore, the prominence of optical security, amount of transmitted data, bandwidth, and dependable presentation are heightened. The performance of ON is degraded in view of various natures of attacks at the physical layer, such as service disrupting and access to carrier data. In order to deal with such security breaches, new and efficient ON must be identified. So, this paper elaborates a detailed structure on physical layer security for heterogeneous ON. Possible mechanisms, such as Elliptic-curve Diffie–Hellman (ECDH), are used to treat a physical layer attack, and an efficient framework is proposed in this paper for 64 quadrature amplitude modulation-based orthogonal frequency division multiplex (64QAM-OFDM) ONs. Finally, theoretical and simulation validations are presented, and the effective results of the proposed method and viewpoint are concluded.

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Extenuation of phase shift influenced nonlinear impairments in fiber optics network

Cited by 9 publications

References 36 publications

Mitigation of Phase Noise and Nonlinearities for High Capacity Radio-over-Fiber Links

Mitigation of Phase Noise and Nonlinearities for High Capacity Radio-over-Fiber Links

Alleviation of nonlinear channel effects in long‐haul and high‐capacity optical transmission networks

Derogation of Physical Layer Security Breaches in Maturing Heterogeneous Optical Networks

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