Engineering Universe For Scientific Research And Management Beta

ISSN (Online): 2319-3069
(International Journal)






Notice Board :




Volume XI Issue III

Paper Title
CHANNEL ESTIMATION TECHNIQUES IN MIMO-OFDM LTE SYSTEM
Author Name
Shivangi Jain, Prof. Amrita Khera
Year Of Publication
2019
Volume and Issue
Volume 11 Issue 3
Abstract
Beyond third generation (3G) and fourth generation (4G), wireless communication systems are targeting for higher data rates, spectral efficiency and mobility requirements than existing 3G networks. By using multiple antennas at the transmitter and the receiver, multiple input multiple-output (MIMO) technology allows improving the spectral efficiency (bits/s/Hz), the coverage, and link reliability of the system. Multicarrier modulation such as orthogonal frequency division multiplexing (OFDM) is a powerful technique to handle impairments specific to the wireless radio channel. The combination of multicarrier modulation together with MIMO signaling provides a feasible physical layer technology for future beyond 3G and fourth generation communication systems. High data rate, low complexity requirements of the future mobile communication systems. In this paper the channel estimation techniques for pilot-based OFDM systems are investigated. The channel estimation is studie
PaperID
2019/EUSRM/3/2019/51215

Paper Title
A REVIEW OF DISTRIBUTED POWER ELECTRONICS IN PHOTOVOLTAIC SYSTEMS
Author Name
Saloni S. Patel, Alka Thakur
Year Of Publication
2019
Volume and Issue
Volume 11 Issue 3
Abstract
Droop control has commonly been used with distributed generators for relating their terminal parameters with power generation. The generators have also been assumed to have enough capacities for supplying the required power. This is however not always true, especially with renewable sources with no or insufficient storage for cushioning climatic changes. In addition, most droop-controlled literatures have assumed a single dc-ac inverter with its input dc source fixed. Front-end dc-dc converter added to a two-stage photovoltaic (PV) system has therefore usually been ignored. To address these unresolved issues, an improved droop scheme for a two-stage PV system has been developed in the paper. The Proposed scheme uses the STATCOM control structure in both gridconnected and islanded modes, which together with properly tuned synchronizers, and mitigates the harmonics, by providing Reactive power and Load current Subsequently the proposed scheme adapts well with internal
PaperID
2019/EUSRM/3/2019/51214

Paper Title
EXPERIMENTAL INVESTIGATION ON HEAT TRANSFER AND FLUID FLOW PHENOMENA OF ARC SHAPED RIB WITH GAPS ON THE PLATE
Author Name
Rohit Sampat Jadhav, Sanjay Kalraiya, Sachin Baraskar
Year Of Publication
2019
Volume and Issue
Volume 11 Issue 3
Abstract
A simple solar air heater has a low value of heat transfer coefficient. It is because of low interaction between absorber plate and the flowing air. In the turbulent flow near the absorber plate surface, a laminar sub layer forms, that is less efficient for the heat transfer and hence act as an insulating medium. So due to this reason we create artificial roughness on the underside of the absorber plate to break the laminar sub layer. Artificial roughness disturbs the laminar sub layer and makes it turbulent, which results in increase in the heat transfer rate. Thermo-hydraulic performance of solar air heater duct can be improved through enhancing the heat transfer. Hence arc shaped artificial roughness is an effective technique to enhance the value of heat transfer of fluid flow
PaperID
2019/EUSRM/3/2019/51212

Paper Title
CFD INVESTIGATION ON RECTANGULAR DUCT WITH ARC SHAPED RIB WITH GROOVE’S ON THE ABSORBER PLATE
Author Name
Pritesh Kharate, Sanjay Kalraiya, Sachin Baraskar
Year Of Publication
2019
Volume and Issue
Volume 11 Issue 3
Abstract
Solar air heater is an important device to convert solar energy into heat energy economically. A CFD analysis is conducted through different turbulence models to study the performance of a solar air heater using absorber plate. A modern CFD code ANSYS FLUENT v.14.5 is used to simulate fluid flow and heat transfer through the solar air heater. A numerical analysis of convective heat transfer enhancement in solar air heater with artificially roughened absorber is presented in this paper. CFD numerical simulation were carried out to analyze the flow and heat transfer in the air duct of a solar air heater provided with arc shape with grooves ribs. The air flow in forced convection and the absorber is heater with uniform flux. Since the flow is cerate turbulent, we used the Reynoldsaveraged navir – stokes RANS formulation to model the flow. We solved momentum and energy, continuity equation used Finite volume method, finite element method, finite difference method also
PaperID
2019/EUSRM/3/2019/51213