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Wyszukujesz frazę "Priya, S. S." wg kryterium: Autor


Wyświetlanie 1-6 z 6
Tytuł:
An optimized design for non-zero dispersion shifted fiber with reduced nonlinear effects for future optical networks
Autorzy:
Raja, A S
Selvendran, S
Priya, R
Mahendran, C
Powiązania:
https://bibliotekanauki.pl/articles/173400.pdf
Data publikacji:
2014
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
dense wavelength division multiplexing
non-zero dispersion shifted fiber
refractive index profile
effective area
dispersion slope
Opis:
Accommodation of many channels in dense wavelength division multiplexing networks raises the average power density of the optical networks. This results in severe nonlinear effects in the optical networks. An optimized design of non-zero dispersion shifted fiber with an enormous effective area can overcome this nonlinear effect and also offer a minimum bending loss and splice loss for a dense wavelength division multiplexing system. In this paper, the alpha-peak profile is utilized for calculating electrical field distribution and designing the refractive index profile of the non-zero dispersion shifted fiber. This fiber has a high effective area of about 120 μm2. Conjointly, the accomplished fiber has a very low bending loss of 1.40×10–14 dB/km and reduced splice loss of 4.46×10–3 dB. Due to this high effective area, the dense wavelength division multiplexing network performance is upgraded by diminishing nonlinear effects. In addition, the newly designed fiber has also a very low dispersion slope (0.057 ps/nm2km). Thus, the proposed fiber is optimized to handle high bandwidth and multiple high bit-rate wavelength channels without nonlinear impairments in the 1.55 μm window long-haul dense wavelength division multiplexing systems.
Źródło:
Optica Applicata; 2014, 44, 4; 503-519
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Performance analysis of optimized non-zero dispersion shifted fiber without amplification and without dispersion compensation for wavelength division multiplexing optical networks
Autorzy:
Priya, R.
Sivanantharaja, A.
Selvendran, S.
Powiązania:
https://bibliotekanauki.pl/articles/174883.pdf
Data publikacji:
2015
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
non-zero dispersion shifted fiber (NZDSF)
repeaterless wavelength division multiplexing (WDM) links
dispersion
nonlinear effects
four wave mixing (FWM)
refractive index profile
bit error rate (BER)
Opis:
In this paper, we have analyzed the performance of our optimized non-zero dispersion shifted fiber with three different test fibers, namely, single mode fiber, conventional non-zero dispersion shifted fiber and dispersion shifted fiber. While comparing the performances of those fibers, our optimized non-zero dispersion shifted fiber has yielded a better quality factor of 5.24 at 2.5 Gbit/s for long haul fiber length of 120 km in the absence of amplification and dispersion compensation. In order to measure the nonlinear impairments of wavelength division multiplexing channel, the quality factor values are measured at the sample channel 193.1 THz for 150 km lengthed fiber with peak input power of 6 dBm. Due to a very large effective area of optimized non-zero dispersion shifted fiber, it delivers a better quality factor of 6.12 compared to the other test fibers. We have also carried out the analysis for higher bitrates and different modulation formats at the transmission end. More phase encoded modulations of carrier-suppressed return-to-zero–differentiated phase shift keying and carrier-suppressed return-to-zero–differential quadrature phase shift keying offered optimum performances for a distance of 120 km at 10 Gbit/s bitrate. By including optical amplifiers, we could achieve a record fiber transmission length of 4000 km at the bitrate of 2.5 Gbit/s which can help the future wavelength division multiplexing optical networks to a great extent.
Źródło:
Optica Applicata; 2015, 45, 4; 473-490
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
GIS Enabled Internet of Things (IoT) Applications: An Overview
Autorzy:
Priya, R. Vishnu
Sivaranjani, S.
Sivakumari, S.
Powiązania:
https://bibliotekanauki.pl/articles/1193557.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Geographic Information System
Internet of Things
Mapping
Sensor
Opis:
Internet of Things (IOT) is a recent trend in communication field that makes internet as a universal thing. It makes all the objects in the world to interconnect with one another and with other devices to attain certain objective. Each object will be equipped with sensors, micro-controllers and receivers for digital communication. Geographic Information System (GIS) is a computer system that deals with geographical data. GIS has an ability to gather, store, examine and manage spatial data and allow users to manage data in maps. IoT and GIS are coupled together to provide a better understanding of geographical data and patterns. This tie-up helps in mapping IoT in an interactive way. This article describes the overview of the integration of GIS enabled IOT applications.
Źródło:
World Scientific News; 2016, 41; 128-134
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Identity-based Encryption for device-to-device Security in IOT Environments
Autorzy:
Mohana, S.
Lakshmi Priya, T. K. S.
Powiązania:
https://bibliotekanauki.pl/articles/1193554.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Internet
Internet of Things
communication
Opis:
The Internet of Things (IOT) is presently a fast catching paradigm in which the everyday objects are manufactured with essential capabilities such sensing, networking and processing. These capabilities enable them to communicate with one another and with other devices and services over the Internet to complete some objective. One of the most important issues is security. When devices are given the freedom to talk to each other, then there are immense possibilities of misuse. In this paper, we propose a secure communication approach for device-to-device communication. It is an Identity-based encryption approach which includes revocation of keys if misuse is detected. The proposed method takes into consideration the high probability of misuse and hence malicious devices are identified and eliminated. This paper presents the design of the proposed approach along with a first level implementation using Java and MsAccess.
Źródło:
World Scientific News; 2016, 41; 105-115
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ganging of Resources via Fuzzy Manhattan Distance Similarity with Priority Tasks Scheduling in Cloud Computing
Autorzy:
Priya, S. S.
Mehata, K. M.
Banu, W. A.
Powiązania:
https://bibliotekanauki.pl/articles/308097.pdf
Data publikacji:
2018
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
clustering
pre-processing
quality of service
resource allocation
Opis:
This paper proposes a fuzzy Manhattan distance-based similarity for gang formation of resources (FMDSGR) method with priority task scheduling in cloud computing. The proposed work decides which processor is to execute the current task in order to achieve efficient resource utilization and effective task scheduling. FMDSGR groups the resources into gangs which rely upon the similarity of resource characteristics in order to use the resources effectively. Then, the tasks are scheduled based on the priority in the gang of processors using gang-based priority scheduling (GPS). This reduces mainly the cost of deciding which processor is to execute the current task. Performance has been evaluated in terms of makespan, scheduling length ratio, speedup, efficiency and load balancing. CloudSim simulator is the toolkit used for simulation and for demonstrating experimental results in cloud computing environments.
Źródło:
Journal of Telecommunications and Information Technology; 2018, 1; 32-41
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Amended Adaptive Algorithm for Corpus Based Improved Speech Enhancement
Autorzy:
Priya, P. Shanmuga
Nidhyananthan, S. Selva
Kumari, R. Shantha Selva
Powiązania:
https://bibliotekanauki.pl/articles/226976.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
least mean square
normalised least mean square
amended normalised least mean square
blind source separation
Opis:
Speech enhancement objective is to improve the noisy speech signals for human perception. The intention of speech enhancement algorithm is to improve the performance of the communication, when the signal is occluded by noise. The quality and intelligibility of speech is reduced because of the presence of background noise. There are various adaptive filtering algorithms for speech enhancement. The existing least mean square and normalised least mean square algorithms have the problem of choosing the step size that guarantees the stability of the algorithm. To overcome this problem, we focus on speech enhancement by amended adaptive filtering. The proposed algorithm follows blind source separation strategy using adaptive filtering. Comparison of existing adaptive filtering algorithms with proposed algorithm justifies the amendment incorporated in this paper. Taking the objective criteria into account the algorithms has been tested for segmental signal to noise ratio (SegSNR), segmental mean square error (SegMSE), signal to noise ratio and mean square error. The proposed algorithm can be used for hand-free cell phone, hearing aids and teleconferencing systems.
Źródło:
International Journal of Electronics and Telecommunications; 2019, 65, 3; 513-517
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-6 z 6

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