Results 41 to 50 of about 5,106,399 (296)

Symbol error rate analysis for M-QAM modulated physical-layer network coding with phase errors [PDF]

open access: yes, 2012
Author version, OK to pubRecent theoretical studies of physical-layer network coding (PNC) show much interest on high-level modulation, such as M-ary quadrature amplitude modulation (M-QAM), and most related works are based on the assumption of phase ...
Song, Q   +7 more
core   +1 more source

Noise Reduction in Digital Hologram Using Wavelet Transforms and Smooth Filter for Three-Dimensional Display

open access: yesIEEE Photonics Journal, 2013
A noise reduction method of Fresnel computer-generated hologram (CGH) using wavelet transform and smooth filter is presented. Noise in hologram is very difficult to remove because an interference pattern is recorded on a digital camera during the digital
Le Thanh Bang   +4 more
doaj   +1 more source

Multi-phase System Supplied by SVM VSI: A New Fast Algorithm to Compute Duty Cycles [PDF]

open access: yes, 2004
La version éditeur de cette article est disponible à l'adresse suivante : http://www.epe-association.org/epe/index.phpMany authors proposed SVM VSI applied to multi-phase ...
HAUTIER, Jean-Paul   +2 more
core   +1 more source

EVALUATION METHOD FOR PARASITIC EFFECTS OF THE ELECTRO-OPTICAL MODULATOR IN A FIBER OPTIC GYROSCOPE [PDF]

open access: yesНаучно-технический вестник информационных технологий, механики и оптики, 2016
Subject of Research.The paper proposes an original method for studying the parasitic effects in the electro-optic modulator of the fiber optic gyroscope. Proposed method is based on the usage of a special waveform phase modulation signal. Method.
S. A. Volkovskiy   +4 more
doaj   +1 more source

On-chip integratable all-optical quantizer using strong cross-phase modulation in a silicon-organic hybrid slot waveguide [PDF]

open access: yes, 2016
High performance all-optical quantizer based on silicon waveguide is believed to have significant applications in photonic integratable optical communication links, optical interconnection networks, and real-time signal processing systems. In this paper,
Yuan, Jinhui   +33 more
core   +1 more source

A Simple Carrier-Based Modulation for the SVM of the Matrix Converter [PDF]

open access: yes, 2013
Today, industry has not fully embraced the matrix converter solution. One important reason is its high control complexity. It is therefore relevant to propose a simpler but efficient modulation scheme, similar as three phase voltage source inverter ...
ARPILLIERE, Michel   +5 more
core   +1 more source

Measuring the Reflection Matrix of a Rough Surface

open access: yesApplied Sciences, 2017
Phase modulation methods for imaging around corners with reflectively scattered light required illumination of the occluded scene with a light source either in the scene or with direct line of sight to the scene. The RM (reflection matrix) allows control
Kenneth Burgi   +3 more
doaj   +1 more source

Single-Shot Compressed Imaging via Random Phase Modulation

open access: yesApplied Sciences, 2022
Compressed sensing (CS) provides an innovative framework for signal sampling, which enables accurate recovery of the sparse or compressible signal from a small set of linear measurements far fewer than the Nyquist rate in traditional signal processing ...
Cheng Zhang   +5 more
doaj   +1 more source

Near-Capacity Irregular Bit-Interleaved Coded Modulation [PDF]

open access: yes, 2008
An Irregular Bit-Interleaved Coded Modulation based Iterative Decoding (Ir-BICM-ID) aided scheme is proposed. The irregularity of the scheme pervades the three basic components of BICM-ID, namely the encoder, the unity-rate precoder and the bit-to-symbol
Tee, R. Y.   +7 more
core   +1 more source

Reflective Inverse Diffusion

open access: yesApplied Sciences, 2016
Phase front modulation was previously used to refocus light after transmission through scattering media. This process has been adapted here to work in reflection.
Kenneth Burgi   +3 more
doaj   +1 more source

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