Kumawat M.,Malaviya National Institute of Technology, Jaipur |
Gupta N.,Malaviya National Institute of Technology, Jaipur |
2016 National Power Systems Conference, NPSC 2016 | Year: 2016
This paper presents an approach of distributed energy resources planning in today's harmonically distorted radial distribution. This scenario of the distribution system has been continuously moving towards a worst situation, which has lots of power electronics devices (non-linear load). The non-linear load demand of the system is exponential increasing during last few decades. Therefore, complexity of the distribution system increases with the presence of both of the problems. The distributed energy resources can mitigate increasing load demand with improved technical performance considering the impact of non-linear load in the planning formulation. Therefore, this paper addresses both issues. The particle swarm optimization based approach using harmonics load flow method to mitigate the power quality issues with the help of optimal planning of distributed energy resources. A typical IEEE 31-bus rural radial distribution system containing the both type of loads (linear and non-linear) is tested for five different cases to incorporate the realistic approach. © 2016 IEEE.
Joshi P.,CTAE |
Joshi S.,Nirma University |
Jain V.,CTAE |
AEU - International Journal of Electronics and Communications | Year: 2017
This paper addresses the problem of computational and hardware complexity in higher order constellation Multiple Input Multiple Output (MIMO) detectors. A novel Segregated K-Best detection (SKD) algorithm is proposed to serve as low complexity near optimal detector for MIMO receivers. The algorithm reduces detection complexity by choosing an optimal value of K depending upon the layer of traversal. This allows lesser number of nodes to be traversed leading to reduced complexity with only slight degradation in error rate performance. Hardware Descriptive Language (HDL) implementation of SKD is performed using ‘one symbol detection per cycle architecture’ and a compatible ‘sequential linear sort’ algorithm is proposed for sorting in SKD. The proposed design achieves a throughput as high as 802 Mbps with latency of 19.83 ns. © 2017 Elsevier GmbH
Patel M.,CTAE |
Advances in Intelligent Systems and Computing | Year: 2017
Extensive use of multimedia application over the internet conduces use of video transmission. This leads the performance consideration of video transmission a popular research area for the industry and academia researches. The wireless LAN is playing important role to connect the users over the internet. As the video transmission increases it poses traffic congestion which in turn degrades the network efficiency. There are various performance parameters to be known for designing the WLAN such as throughput, end to end delay, Queue utilization, jitter, PSNR and many more. We aimed in the paper to develop simulation scenario for video transmission over IEEE 802.11n WLAN standard. For this we modify the both the fedora and NS2 settings and successfully performs the video transmission simulations. © Springer Nature Singapore Pte Ltd. 2017.
Agrawal N.,CTAE |
Proceedings of the 2013 International Conference on Advances in Computing, Communications and Informatics, ICACCI 2013 | Year: 2013
In this paper, we have designed a Reconfigurable Digital Sequential System on Chip design capable of transmitting and receiving data in parallel in 8 bits to 512 bits range. This circuit provides Reconfigurable point to point communication, data rate of 1.54 Gbits/sec to 277 Gbits/sec. The design comprises of two Sub Circuits: Transmitter/Receiver & Router. Our objective after developing Reconfigurable system was reduction of the power consumption in the circuit by exploiting Dynamic Partial Reconfiguration, which we get after results is nearly 5% - 10% of the total power consumption of the circuit and finally we have concluded the calculated parameters i.e. Power Consumption (Static and Dynamic), Delay, data rate and Resources Utilized by taking all the Reconfigurable Transreciever as platform on the various FPGA families by Xilinx and finally plot them on graph, so as to exploit respective family according to application, specification as well as constraints what is the best chosen parameter and family according to the analysis made. The complete circuit is programmed in VHDL, and synthesized and simulated on Xilinx design suite 14.4 ISE. © 2013 IEEE.
Gupta T.,CTAE |
Chaudhary S.,Malaviya National Institute of Technology, Jaipur |
Journal of Cleaner Production | Year: 2015
Availability of natural sand conforming to required standards for use in concrete is diminishing day by day and is severely affecting the construction industry. On the other hand, disposal of used rubber tyres is an environmental, health and esthetic problem as its recycling is extremely difficult. In this paper, a systematic experimental investigation is carried out on concrete with rubber fibers (obtained by grinding waste rubber tyres) as partial replacement of fine aggregates, to evaluate the compressive strength, density, water permeability, static modulus of elasticity, dynamic modulus of elasticity and chloride diffusion. Rubber fibers have been used with three different water-cement ratios (0.35, 0.45 and 0.55). Six levels of rubber fibers contents (0, 5, 10, 15, 20 and 25%) as partial replacement of sand and three levels of silica fume (0, 5 and 10%) as partial replacement of cement have been considered. Microstructure analysis of rubber fiber sample by scanning electron microscope and Energy dispersive X-ray analyzer has been carried out. Compressive strength, static and dynamic modulus of elasticity of waste rubber tyre fiber concrete are found to decrease with the increase in the replacement level of fine aggregates by rubber fibers. © 2015 Elsevier Ltd.
Gupta T.,CTAE |
Chaudhary S.,Malaviya National Institute of Technology, Jaipur |
Construction and Building Materials | Year: 2014
Now a day's natural sand is becoming scarcer and costlier due to its non-availability. Waste rubber tire as fine aggregates can be an economical and sustainable alternative to river sand. In this study attempt has been made to utilize waste rubber tire as partial replacement of fine aggregate in the form of rubber ash and rubber ash with rubber fibers (combined form) with three w/c ratios. Workability, compressive strength, flexural strength, density, water absorption, abrasion resistance, carbonation depth, static modulus of elasticity, dynamic modulus of elasticity and chloride ion penetration of rubber ash concrete and modified concrete (10% rubber ash and varied percentage of rubber fibers) have been obtained. Micro-structural study using XRD, EDAX and SEM has also been carried out in this work. It has been shown that flexural strength of rubber ash concrete decreases with the increase of percentage of rubber ash whereas flexural strength of modified concrete is increased with the increase of the percentage of rubber fibers content. The abrasion resistance, carbonation depth, modulus of elasticity and chloride ion penetration of rubber ash concrete and modified concrete were also affected by addition of rubber ash and rubber fibers in concrete. © 2014 Elsevier Ltd. All rights reserved.
Vyas A.K.,CTAE |
Optik | Year: 2016
In this paper, we are comparative study of performance analysis of polynomial based predistorter technique with three different architectures viz. memory polynomial, envelope memory polynomial and hybrid envelope memory polynomial models for high order of nonlinearity (K = 7) and large memory length (Q = 3). The nonlinear distortion is a critical issue for radio over fiber link. The predistorter is one of the most important approaches to overcome the nonlinear distortion. In this paper the performance analysis of the two most prevailing predistorters (memory polynomial and envelope memory polynomial) have been compared with the performance of the model (hybrid envelop memory polynomial) developed by the author. The performance of different predistorter model are analyzed for input laser power ranging from −4dBm to 4dBm, input frequency for ∼0.55 GHz to ∼3.00 GHz and for different type of input signal like m-QAM, orthogonal frequency division multiplex, WiMax and LTE (long term evolution). The performance metrics are adjacent power ratio, error vector magnitude and normalized mean square error. The model have been tested for fiber length up to ∼50 km. Whole of the simulation work to compare the performance analysis has been carried out on OptiSystem v13.0 and MATLAB R20013a. © 2016 Elsevier GmbH
Vyas A.K.,CTAE |
Optik | Year: 2016
Radio over Fiber (RoF), an empowering innovation for dissemination of wireless broadband service signals through simple optical connections experiences non-linear distortion. We have designed and implemented a novel predistorter model to reduce nonlinear distortion using hybrid envelop memory polynomial (HEMPM) for the RoF system. The link gives satisfactory performance in the range of GHz signal. The designed algorithm is superior to popular approaches like memory polynomial model (MPM) and envelop memory polynomial model (EMPM) in terms of order of the memory and degree of nonlinearity. As per author's the best knowledge, this is exclusively first time result obtained for HEMPM technique for RoF link and also, for MPM, EMPM based predistorter for RoF link using MATLAB-OptiSystem co-simulation. The results shows that adjacent channel power (ACP) is suppressed by ∼0.45 dB m, ∼28.4 dB m and ∼7.65 dB m of MPM & EMPM and HEMPM model for K = 5 & Q = 2 whereas for K = 7 & Q = 3 the value of suppressed power is ∼36.3 dB m, ∼47.7 dB and ∼05.8 dB m, respectively as compared to input signal. NMSEs for (K = 7) and memory length (Q = 3) reduced by ∼-5.003 dB m for HEMPM model and increased by ∼-4.13 dB m for MPM model. The EVM is increased from ∼1.56% to ∼1.96% for HEMPM model and increased from ∼4.38% to ∼14.73% for MPM model for K = 7 & Q = 3. © 2016 Elsevier GmbH. All rights reserved.
Puntambekar S.,PAHER |
International Journal of Applied Engineering Research | Year: 2016
The research presents recurrent wavelet based adaptive control (RWNC) scheme for uncertain nonlinearity based delayed systems with hysteresis. For the estimation of uncertainties present in the system and hysteresis nonlinearity effect used Self recurrent wavelet neural network (SRWNN). Deployment of hysteresis phenomenon in proposed work used Prandtl-Ishlinskii (PI) model. Proposed Controller consists of wavelet based feedback system and a robust control mechanism. The simulation study carried out for stability analysis of the proposed controller using Lyapunov-Krasovskii function and verifies the effectiveness of theoretical development. © Research India Publications.
Khatri N.,CTAE |
2013 4th International Conference on Computing, Communications and Networking Technologies, ICCCNT 2013 | Year: 2013
A novel method of double image encryption is proposed, by utilizing random phase encoding in the LCT domain to encrypt two images into one encrypted image with stationary white distribution. By proper application of keys i.e. order of transform and random phase mask. The images can be recovered without any loss of information. The phase based image is more sensitive to keys and disturbances than amplitude based image. The image pixel scrambling operation enhances the quality of the decrypted image when noise occurs and linear canonical transform improves authentication. Numerical simulations have been done to prove the security and validity of the proposed method. © 2013 IEEE.