scholarly journals Characterization of Narrowband Noise and Channel Capacity for Powerline Communication in France

2020 ◽  
Author(s):  
Imène Elfeki ◽  
Sébastien Jacques ◽  
Ismail Aouichak ◽  
Thierry Doligez ◽  
Yves Raingeaud ◽  
...  
Keyword(s):  
Channel Capacity ◽  
Powerline Communication ◽  
Narrowband Noise

scholarly journals An adaptive q-Lognormal model towards the computation of Average Channel Capacity in slow fading channels

2021 ◽  
Author(s):  
Tanmay Mukherjee ◽  
Dilip Senapati
Keyword(s):  
Fading Channels ◽  
Channel Capacity ◽  
Performance Measures ◽  
Lognormal Model ◽  
Average Channel Capacity ◽  
Slow Fading ◽  
Slow Fading Channels ◽  
Log Normal ◽  
Log Normal Distribution

Abstract The characterization of multipath fading and shadowing in wireless communication systems is essential towards the evaluation of various performance measures. It is well known that the statistical characterization of shadowing phenomena is captured by distributions viz., log-normal distribution, gamma distribution and other mixture distributions. However, it is observed that the log-normal distribution fails to characterize the outliers in the fading signal. The extreme fluctuations in the fading signal needs to be characterized efficiently for error free computation of the various performance metrics. In this context, this paper portrays an adaptive generalized Tsallis’ non-extensive q-Lognormal model towards the characterization of various fading channels. This model operates well with the synthesized fading signals and captures the wide range of tail fluctuations to adapt different fading scenarios. The significance and applicability of the proposed novel q- Lognormal model in capturing the slow fading channels is validated using different statistical tests viz., chi-square test and symmetric JS measure. Furthermore, essential performance measures viz., the average channel capacity, closed form expression of cumulative distribution function (CDF) in terms of Gauss-Hypergeometric function 2 F 1 [a ; b ; c; z], higher order moments corresponding to q-Lognormal channel capacity and coefficient of variation is evaluated corresponding to the proposed q-Lognormal model performing extensive Monte-Carlo simulation techniques up to O (10^7).

scholarly journals Characterization of Narrowband Noise and Channel Capacity for Powerline Communication in France

Energies ◽  
2018 ◽  
Vol 11 (11) ◽  
pp. 3022 ◽  
Author(s):  
Imène Elfeki ◽  
Sébastien Jacques ◽  
Ismail Aouichak ◽  
Thierry Doligez ◽  
Yves Raingeaud ◽  
...  
Keyword(s):  
Channel Capacity ◽  
Smart Grids ◽  
Low Voltage ◽  
Powerline Communication ◽  
Medium Voltage ◽  
Time Frequency ◽  
Frequency Representation ◽  
Major Interest ◽  
Capacity Calculation ◽  
Advanced Metering

Narrowband powerline communication (NB-PLC) systems represent a key step for the real development of smart grids’ applications in the medium voltage (MV) and low voltage (LV) networks. This article sums up the results of a complete experimental measurement campaign aimed at investigating the low voltage NB-PLC channel in the frequency range from 9 to 500 kHz in various sites (i.e., rural, urban etc.) located in France. The noise features in time-frequency representation are studied at five different sites between the transformer substation and the smart electricity meter. The main contribution of this study consists in estimating the theoretical channel capacity which constitutes a major interest for the users and actors of the electrical system. The channel capacity calculation shows reliable results in the US Federal Communications Commission (FCC) band (a few Mbits/s). The quality of the communication in the FCC band enables to integrate new smart grids’ applications and services based on the existing NB-PLC communication for advanced metering infrastructure (AMI).

scholarly journals CHARACTERIZATION OF RECONFIGURABLE MIMO ANTENNAS FOR CHANNEL CAPACITY IN AN INDOOR ENVIRONMENT

2016 ◽  
Vol 65 ◽  
pp. 67-77
Author(s):  
Rifaqat Hussain ◽  
Muhammad Umar Khan ◽  
Wajih Abu-Al-Saud ◽  
Ali Hussein Muqaibel ◽  
Mohammad S. Sharawi
Keyword(s):  
Channel Capacity ◽  
Indoor Environment ◽  
Mimo Antennas

Morphological Characterization of Mycobacteriophage R1

1974 ◽  
Vol 32 ◽  
pp. 254-255
Author(s):  
B. L. Soloff ◽  
T. A. Rado
Keyword(s):  
Carbon Source ◽  
Stationary Phase ◽  
Growth Phase ◽  
Minimal Medium ◽  
Morphological Characterization ◽  
Logarithmic Growth Phase ◽  
Complete Lysis ◽  
Lysogenic Culture ◽  
Logarithmic Growth

Mycobacteriophage R1 was originally isolated from a lysogenic culture of M. butyricum. The virus was propagated on a leucine-requiring derivative of M. smegmatis, 607 leu−, isolated by nitrosoguanidine mutagenesis of typestrain ATCC 607. Growth was accomplished in a minimal medium containing glycerol and glucose as carbon source and enriched by the addition of 80 μg/ ml L-leucine. Bacteria in early logarithmic growth phase were infected with virus at a multiplicity of 5, and incubated with aeration for 8 hours. The partially lysed suspension was diluted 1:10 in growth medium and incubated for a further 8 hours. This permitted stationary phase cells to re-enter logarithmic growth and resulted in complete lysis of the culture.

AEM analysis of crystallization in Ti-based amorphous alloys

1983 ◽  
Vol 41 ◽  
pp. 270-271
Author(s):  
A.R. Pelton ◽  
A.F. Marshall ◽  
Y.S. Lee
Keyword(s):  
Magnetic Properties ◽  
Amorphous Alloys ◽  
Amorphous Materials ◽  
Isothermal Annealing ◽  
Amorphous Matrix ◽  
Nucleation And Growth ◽  
Current Interest ◽  
Amorphous Films ◽  
Electrical And Magnetic Properties

Amorphous materials are of current interest due to their desirable mechanical, electrical and magnetic properties. Furthermore, crystallizing amorphous alloys provides an avenue for discerning sequential and competitive phases thus allowing access to otherwise inaccessible crystalline structures. Previous studies have shown the benefits of using AEM to determine crystal structures and compositions of partially crystallized alloys. The present paper will discuss the AEM characterization of crystallized Cu-Ti and Ni-Ti amorphous films.Cu60Ti40: The amorphous alloy Cu60Ti40, when continuously heated, forms a simple intermediate, macrocrystalline phase which then transforms to the ordered, equilibrium Cu3Ti2 phase. However, contrary to what one would expect from kinetic considerations, isothermal annealing below the isochronal crystallization temperature results in direct nucleation and growth of Cu3Ti2 from the amorphous matrix.

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