IJSPR: Volume 13 Number 01
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IJSPR - Volume 13, Number 01

Published On : July 2015
SNo. Paper Title & Authors Page
Abstract: Determine of Mutual Inductance in electromagnetic energy based on the coupling mode is crucial for system design .The Analytical formula and experimental method which only aim at a coupling coil with certain type of configuration .Therefore they can’t serve as a design basis for the system optimization .This paper present a wireless power Transfer for electromagnetic energy and circuit coupling analysis to calculate mutual inductance of coupling coil. The method can obtain maximum efficiency under the condition that the spatial distribution of coupling coils are irregular and restrained in actual physical systems. The method has made a breakthrough and provided a powerful tool for design and optimization of mutual inductance based on electromagnetic energy and circuit coupling analysis of wireless power transmission system.
Keywords:Mutual Inductance, electromagnetic energy generate, circuit coupling analysis, wireless power Transfer.
Abstract: Orthogonal Frequency Division Multiplexing (OFDM) has become a popular modulation method in high speed wireless communications. By partitioning a wideband fading channel into flat narrowband channels, OFDM is able to mitigate the detrimental effects of multipath fading using a simple one-tap equalizer. There is a growing need to quickly transmit information wirelessly and accurately. OFDM is a suitable candidate for high data rate transmission over wireless channels. Coded-OFDM eliminates ISI and is robust to radio fading channels impairments. Thus OFDM offers higher data throughput with increased reliability in data transmission. Multiband OFDM based Ultra Wideband (UWB) system uses OFDM modulation technique with a multiple banding approach, which divides the spectrum into several sub-bands, whose bandwidth is approximately 490MHz. OFDM based system is very sensitive to timing and frequency offsets, the received constellation is slightly different from transmitted constellation due to processing delay and additional delay introduced from the channel. This paper provides the analysis of block coding on OFDM based UWB system and also comparing system BER and SNR performance over different modulation techniques.
Keywords:BER performance, Block codes, OFDM, Ultra wideband.
Abstract: Antenna array is a group identical elements arranged in a regular fashion. In linear array, array elements are arranged in a straight line. In the thinning some of the elements of array are turned OFF, the main idea behind this is to reduce the cost, weight and SLL.
Keywords:SLL, Thinning, FFT, CORDIC, PS.
Abstract: The shadows in high-resolution satellite images are usually caused by the constraints of imaging conditions and the existence of high-rise objects. This is particularly so in urban areas. The paired region based method explores pixel or edge information; we employ a region-based approach. In accumulation to considering individual regions singly, we predict relative illumination conditions between segmented regions from their appearances and perform pair-wise classification based on such information. Classification results are used to build a graph of segments, and graph-cut is used to solve the labelling of shadow and nonshadow regions To alleviate the shadow effects in high-resolution images for their further applications, this paper proposes a novel shadow detection algorithm based on the morphological filtering and a novel shadow reconstruction algorithm based on the example learning method. In the shadow detection stage, an initial shadow mask is generated by the thresholding method, and then, the noise and wrong shadow regions are removed by the morphological filtering method. Experimental results on Quick Bird and WorldView-2 satellite images have demonstrated that the proposed shadow detection algorithm can generate accurate and continuous shadow masks and also that the estimated nonshadow regions from the proposed shadow reconstruction algorithm are highly compatible with their surrounding nonshadow regions. Finally, we examine the effects of the reconstructed image on the application of classification by comparing the classification maps of images before and after shadow reconstruction.
Keywords:Example learning, Markov random field (MRF), morphological filtering, shadow detection, shadow reconstruction.
Abstract: Marsilea minuta Linn. is a fern belongs to the family Marsileaceae. The plant is distributed throughout India. According to Acharya Charak and Susruth it possess tridosaghan property and grahi in nature. The synonyms of the plant are Sitivara and Svastika. The chemical constituent marsilene, a macrocyclic ketone has been isolated from the plant which possesses sedative and anti-convulsant properties. The plant has been studied for their various pharmacological activities like adaptogenic-antistress, anti-depressant, anti-diabetic, anti-aggressive, anti-fertility, anti-tussive, hepatoprotective, analgesic and hypocholesterolemic activity. Ethno botanically the plant is important as it is used in the treatment of diabetes by local people in Javadhu Hills Tamil Nadu, India. Though, systemic information on various aspects of this species is unavailable. In present review, an attempt has been made to present the information regarding plant profile, pharmacological properties and ethno botany.
Keywords:Marsilea minuta Linn., tridosaghna, marsilene, antidepressant, ethnobotanically.
Abstract: This paper deals with the detailed modelling of a permanent magnet synchronous motor drive system in Simulink. Decoding of hall signals is used for sensing the position of drive. The simulation includes all realistic components of the system. This enables the calculation of currents and voltages in different parts of the inverter and motor under transient and steady conditions.This paper reports the vector control of PMSM with neuro-fuzzy speed controller.
Keywords:PMSM, neuro-fuzzy.
Abstract: The bit error ratio (also BER) is the number of bit errors divided by the total number of transferred bits during a time duration. The proposed BER tester (BERT) integrates fundamental baseband signal processing modules of a typical wireless communication system along with a realistic fading channel simulator and an accurate Gaussian noise generator onto a single FPGA to provide an accelerated and repeatable test environment. The error rate performance of single- and multiple-antenna systems over a wide range of parameters can be rapidly evaluated by using a developed graphical user interface. The FPGA-based Bit Error Rate should reduce the need for time-consuming software based simulations, hence increases the productivity. The BERT modules were developed using device-independent HDL, and no specific features of the FPGAs, such as processors, were utilized. Therefore, the system is portable and can easily be synthesized onto larger and faster new FPGAs for the rapid prototyping of increasingly complex emerging wireless communication systems. FPGA offer significant cost reduction compared to commercially available solutions.
Keywords:Bit-error rate tester (BERT), field-programmable gate array (FPGA), fading channel simulation, Gaussian noise.
Abstract: Energy is used in fields and sectors of life, from the provision of resources such as water, oil and gas, to electric consumption in homes and the power required by industry and commerce. Much of that energy is consumed usefully, but large amount is wasted every day due to carelessness. It is the waste or inefficient use of energy that needs to be reduced. The importance of energy conservation is not only a technique for preventing inefficient use of energy but also a mandatory responsibility of citizens of country to protect the environment from Pollution and to avoid the fast depletion of natural resources. This study presents an approach to reduce the energy consumption using DMAIC to reduce power losses & increase the efficiency of equipments. As to minimize the energy consumption trends, the Specific energy consumption was considered. The main objective of this study is to reduce the specific energy consumption by 15% by using DMAIC approach.
Keywords:Power Usage, Energy Consumption, HCCBPL.
Abstract: Water resources and environment management is important for all living beings on the earth’s surface. Capacity of the water resources are reducing due to soil erosion or sedimentation and quality also decreasing due to overflow of the reservoir. The analysis of sedimentation data of Indian reservoirs show that the annual siltation rate has been generally 1.5 to 3 times more than the designed rate and the reservoirs are generally losing capacity at the rate of 0.30 to 0.92 per cent annually (NRSA). Remote sensing is a useful tool for in-situ monitoring of suspended sediments in surface water for a variety of reasons such as the multi spectral nature, large area coverage, and temporal data sets. Considering the necessity of the assessment of the sediment as well as advantage of the remote sensing technique, the present study is taken to develop the spectral signature library for different sediment concentration. These results integrating with satellite data yield significant. A controlled experiment was conducted in outdoors condition with a 40 liter water tank (white painted) having natural sunlight condition. A different soil series viz. Gulvanch, Targaon, Rahuri, and Pather etc. were added and suspended in the tank filled with water. A total 10 levels of Suspended Sediment Concentration (SSC) (from 1000 ppm to 10000 ppm) were added for each type of treatment. Reflectance was recorded using an HR 1024 Spectroradiometer, and reflectance factor was computed and analyzed. The linearity in the SSC-reflectance relationship increased with wavelength between 400 and 900 nm. For relationship between suspended sediment concentration and reflectance data four different functions, viz. exponential, linear, logarithmic and power were tried. The best fit model was found to be power by regression analysis.
Keywords:Spectral signature, radiometer, sediment.
Abstract: Silver nanoparticles have been the subject of research due to their unique electronic, optical, mechanical, magnetic, chemical as well as antibacterial property. In the present study, silver nanoparticles were synthesized using chemical and biological approach. In the chemical approach citrate of sodium and hydrazine hydrate were used as a reducing agent and in the biological approach Murraya koeniggi and Azadirachta indicca leaf extract were used as a reducing agent. In comparison to the chemical and biological method, biological method is easy to use, economical, non-toxic and eco-friendly method. The particles were characterized by using UV-Vis spectroscopy. The peaks revealed the formation of silver nanoparticle and band gap was calculated using Tauc plot method. Antibacterial activity was measured using Kirby bauer disc diffusion techniques.
Keywords:Silver nanoparticle, UV-Vis absorption spectrum, Kirby Bauer method, Biological and chemical approach.