Results 21 to 30 of about 38,212 (190)

A new Transmission and Reception Algorithms for Improving the Performance of SISO/MIMO- OFDM Wireless Communication System

open access: yesTikrit Journal of Engineering Sciences, 2021
The future wireless communication requires a reliable transmission at high data rates, so the transmission over frequency-selective fading Multiple-Input–Multiple-Output MIMO channels become interesting since the capacity of "MIMO" channels expressions ...
Maha Monther Shahab   +2 more
doaj   +1 more source

Simplicial cohomology of band semigroup algebras [PDF]

open access: yes, 2011
We establish simplicial triviality of the convolution algebra $\ell^1(S)$, where $S$ is a band semigroup. This generalizes results of the first author [Glasgow Math. J. 2005, Houston J. Math. 2010].
Choi, Yemon   +2 more
core   +2 more sources

Photovoltaic power prediction based on sliced bidirectional long short term memory and attention mechanism

open access: yesFrontiers in Energy Research, 2023
Solar photovoltaic power generation has the characteristics of intermittence and randomness, which makes it a challenge to accurately predict solar power generation power, and it is difficult to achieve the desired effect. Therefore, by fully considering
Wengang Chen   +5 more
doaj   +1 more source

Cyclic-Coded Integer-Forcing Equalization [PDF]

open access: yes, 2011
A discrete-time intersymbol interference channel with additive Gaussian noise is considered, where only the receiver has knowledge of the channel impulse response.
Erez, Uri, Ordentlich, Or
core   +1 more source

Quasi-cyclic unit memory convolutional codes [PDF]

open access: yesIEEE Transactions on Information Theory, 1990
Unit memory convolutional codes with generator matrices, which are composed of circulant submatrices, are introduced. This structure facilitates the analysis of efficient search for good codes. Equivalences among such codes and some of the basic structural properties are discussed.
Justesen, Jørn   +2 more
openaire   +2 more sources

DEVELOPMENT OF A METHOD TO REDUCE COMPUTATIONAL COSTS IN COMMUNICATION SYSTEMS WITH UFMC THROUGH THE USE OF NUMBER-THEORETIC TRANSFORMATIONS

open access: yesСовременная наука и инновации, 2022
The search for new ways to improve the parameters of mobile radio communication systems OFDM led to the intensification of the development of mathematical models with the properties of finite algebraic structures. Proposed in this paper the transition to
M. I. Kalmykov   +4 more
doaj  

Electrodeposition and Characterization of Polyaniline on Stainless Steel Surface via Cyclic, Convolutive Voltammetry and SEM in Aqueous Acidic Solutions

open access: yesInternational Journal of Electrochemical Science, 2014
The electrodeposition of polyaniline on stainless steel electrode was carried out in aqueous media at two different concentrations of sulphuric acid under potentiodynamic conditions.
A.Y. Obaid   +5 more
doaj   +1 more source

A Deep Learning Approach to Organic Pollutants Classification Using Voltammetry

open access: yesSensors, 2022
This paper proposes a deep leaning technique for accurate detection and reliable classification of organic pollutants in water. The pollutants are detected by means of cyclic voltammetry characterizations made by using low-cost disposable screen-printed ...
Mario Molinara   +7 more
doaj   +1 more source

A parallel Viterbi decoder for block cyclic and convolution codes [PDF]

open access: yes, 2005
We present a parallel version of Viterbi's decoding procedure, for which we are able to demonstrate that the resultant task graph has restricted complexity in that the number of communications to or from any processor cannot exceed 4 for BCH codes.
Amarasinghe, Kosala, Reeve, Jeffrey
core   +2 more sources

On estimations of solutions of one convolution type equation

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2013
We consider a convolution type equation in a semi-strip for the functions belonging to the Hardy-Smirnov space. Estimations of solutions are obtained in terms of analytic continuation.
B.V. Vynnytskyi, V.M. Dilnyi
doaj   +3 more sources

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