Results 101 to 110 of about 217,546 (313)
Advanced Photonics Research, EarlyView.Ultrafast pulsed laser technology enables precise material processing. This study examines molybdenum oxide formation under varying laser parameters. A dataset of 187 samples is generated, and eight deep neural networks (DNNs) with different architectures are trained. Models are validated using three learning rates and evaluated with mean squared error,
Jose R. Paredes‐Miguel +6 more
wiley +1 more source
Convolutional codes: techniques of construction [PDF]
Computational and Applied Mathematics, 2014 In this paper we show how to construct new convolutional codes from old ones by applying the well-known techniques: puncturing, extending, expanding, direct sum, the (u|u + v) construction and the product code construction. By applying these methods, several new families of convolutional codes can be constructed.
openaire +3 more sources
Advanced Photonics Research, EarlyView.A novel free‐space optical communication protocol that combines the benefits of partially coherent light sources with the decoding capabilities of convolutional neural networks is proposed. This approach establishes a robust communication link that can withstand atmospheric turbulence.
Linxuan Yao +6 more
wiley +1 more source
Packets flow watermarking method based on the inter-packet delay with smooth crossed grouping
Tongxin xuebao, 2017 To improve the self-correction ability and resist the entropy-based detection,a flow watermarking approach based on the inter-packets delays with smooth crossed grouping was proposed.Such an approach extended the watermarking methods using both the ...
Hua JIN, Hui ZHU, Chang-da WANG
doaj
Feedback equivalence of convolutional codes over finite rings
Open Mathematics, 2017 The approach to convolutional codes from the linear systems point of view provides us with effective tools in order to construct convolutional codes with adequate properties that let us use them in many applications.
DeCastro-García Noemí
doaj +1 more source
Concatenated Convolution-Polar codes over Rayleigh Channels degraded as Erasure Channels [PDF]
arXiv, 2020 Polar codes have been shown to approach capacity of symmetric binary erasure channels and also have low encoding and decoding complexity. Wireless channels are bursty in nature and a method to apply polar codes over wireless channels is proposed. This paper investigates the performance of polar codes over typical urban fading wireless channels.
arxiv
Advanced Photonics Research, EarlyView.Multiple incoherent nonlinear deconvolutions (MIND) has extended dimension for optimization that provides a better solution than Wiener deconvolution and nonlinear reconstruction. MIND minimizes deconvolution noise by averaging over multiple deconvolutions each with different system aperture that effectively enhances the resolution.
Jawahar Prabhakar Desai +2 more
wiley +1 more source
Complete j-MDP convolutional codes [PDF]
arXiv, 2019 Maximum distance profile (MDP) convolutional codes have been proven to be very suitable for transmission over an erasure channel. In addition, the subclass of complete MDP convolutional codes has the ability to restart decoding after a burst of erasures. However, there is a lack of constructions of these codes over fields of small size.
arxiv
IEEE Transactions on Information TheoryThis paper investigates the concept of self-dual convolutional code. We derive the basic properties of this interesting class of codes and we show how some of the techniques to construct self-dual linear block codes generalize to self-dual convolutional codes.
Heri, Sebastian +2 more
openaire +3 more sources
Advanced Theory and Simulations, EarlyView.This study presents a wave propagation‐based optimization strategy for asymmetric double‐layer Au gratings to improve infrared polarization selectivity. A logic‐based method efficiently determines single‐wavelength structures through analytical modeling, while a learning‐based approach utilizing an explainable neural network enables broadband ...
Ryuna Kang +4 more
wiley +1 more source