Investigation of Asymmetrically Clipped Optical Wavelet Based OFDM System

Almaloo, Farhad Sadeghi; Zarie, Majid; Aghdash, Ghader Mohammadi

doi:10.12720/jcm.14.9.833-838

Cited by 3 publications

(1 citation statement)

References 15 publications

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“…3) Symlets wavelets Symlets function is an improvement of dbN function, symN wavelet has better symmetry and can reduce the phase distortion to the signal during decomposition and reconstruction [31].…”

Section: Selection Of Wavelet Basesmentioning

confidence: 99%

Wavelet transform-based characterization of printing ink penetration depth and image phase dissimilarity

Liu,

Fan,

Shi

et al. 2023

Applied Mathematics and Nonlinear Sciences

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In this paper, continuous wavelet transform and discrete wavelet transform are used to detect transient anomalies entrained in normal information and to demonstrate their components. Multi-scale analysis of wavelet transform, Haar wavelet basis and multi-scale edge detection algorithms are utilized to determine the modal extreme points and identify the edge points for faster and more accurate extraction of edge features of the image. In order to further validate the applicability and feasibility of wavelet transform for printing images and to determine the quality inspection criteria based on ink penetration depth and image phase anisotropy, MATLAB software is utilized to perform simulation tests. The results show that the wavelet transform can remove the noise generated by uneven illumination and printing background during the printing process and can detect the edges of the printing image with an error accuracy of ±0.063mm and meet the error correction accuracy of <0.4mm as required by the printing standard. The experiments verify the feasibility of the wavelet transform, which can characterize the depth of penetration of the printing ink and the image anisotropy and provides a theoretical basis for improving the quality of printing. The experiment confirms that wavelet transform can be used to measure printing ink penetration depth and image anisotropy, giving a theoretical basis for improving printing quality.

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Section: Selection Of Wavelet Basesmentioning

confidence: 99%

Wavelet transform-based characterization of printing ink penetration depth and image phase dissimilarity

Liu,

Fan,

Shi

et al. 2023

Applied Mathematics and Nonlinear Sciences

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A dual-band tunable terahertz bandpass filter using an E-shaped graphene resonator

Mohammadi,

Orouji,

Danaie

2024

Opt Quant Electron

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Investigation of Coded WOFDM System over Multimode Optical Channels

Almaloo¹,

Zarie²,

Abadi³

et al. 2020

jcm

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In this paper, the performance of Asymmetrically Clipped Optical Wavelet based Orthogonal Frequency Division Multiplexing (ACO WOFDM) system is compared to the performance of Asymmetrically Clipped Optical Orthogonal Frequency Division Multiplexing (ACO OFDM) system. Then a Coded ACO WOFDM (CACO WOFDM) communication system over a multimode optical channel is investigated. The used wavelet transform is the Wavelet Packet Transform (WPT). Quadrature Amplitude Modulation (QAM) is used as the modulation format. The simulation results show a considerable performance improvement of ACO WOFDM system in terms of BER and slight performance improvement of ACO WOFDM system in terms of OSNR Compared to the ACO OFDM system. Also, from the simulation results, we find that the CACO WOFDM considerably improves the BER and OSNR performance of the communication system.

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Investigation of Asymmetrically Clipped Optical Wavelet Based OFDM System

Cited by 3 publications

References 15 publications

Wavelet transform-based characterization of printing ink penetration depth and image phase dissimilarity

Wavelet transform-based characterization of printing ink penetration depth and image phase dissimilarity

A dual-band tunable terahertz bandpass filter using an E-shaped graphene resonator

Investigation of Coded WOFDM System over Multimode Optical Channels

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