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A novel full on-chip low dropout linear regulator is presented in this paper. This LDO is designed with a double recycling folded cascode error amplifier that offers very good stability. A refined frequency compensation scheme is used which maintains LDO stable over entire load current range i.e. 0–100mA and results a fast transient response. The overshoot/ undershoot in the output voltage under the...
Spatial modulation (SM) is a recently proposed multiple-input multiple-output (MIMO) system that can offer low complexity, and avoid inter-antenna synchronization (IAS) and inter-channel interference (ICI). However, SM considers only for single user system. In this paper, we study the bit error rate (BER) performance and complexity of SM in uplink multi-user systems by maximum-likelihood (ML) optimal...
Generally, there are many of the error evaluation methods which employed for the length measurement system. The reversal error is one of the important sources of the error. Normally, it is compensated by using the linear error compensation but some residual error is found for measurement uncertainty evaluation. This paper presents a method which is a new design of an automated line scale measuring...
Recently, Quadrotor started to become widely known Such as the use of photography from high level. Quadrotor provide the great adventage that applied to a variety of everyday activities. But the user often face many problems, Quadrotor can't controll as user need. The major problem caused by the wind, which made its work not full effective. Thus, leading to implementation of disturbance observer (DOB)...
Nowadays, a recommendation system is an important technique in the development of electronic-commerce systems and the most popular approaches that use in many recommendation systems are a collaborative filtering algorithm. However, it still has problems such as scalability and sparse data. There are several previous methods used to deal with the weakness of collaborative filtering techniques such...
This research presents the design and construction of a rotating-disc uroflowmetry machine which reduces the energy that collides with the disc, displays results on a Smartphone, and is able to record data. The machine consists of direct current motor, rotating disc, current sensor circuit, filter circuit and processor. The machine works by having a patient's urine directed onto the rotating disc...
We describe an empirical study findings on the impact of throughput performance when transmission power is adjusted among access points in close-proximity network devices. The experiment was conducted in an office environment to emulate a dense wireless LAN network. We introduce a power adjustment mechanism based on cognitive learning one of the attributes which then triggers the power selection....
Hadoop is a de facto platform for processing both semi-structured and unstructured data. To save cost, corporates usually run Hadoop instances on the public cloud. Unfortunately, security exploits today are widely spread easily enough to put the public cloud in danger. Running corporate-owned Hadoop clusters is more feasible. However, operating private data centers is costly. An alternative would...
This research proposed the improved H-LBP for edge detection, TH-LBP. It applied the Hyperbolic Tanh function instead of the H function. In this method, the continuous and thick edges can be obtained. In addition, the method parameters could be adjusted to increase the edge details in the low contrast area. This method can solve the problem in the case that the two different local areas obtain the...
The paper presents an analysis about the reset time of the primary current for a novel three-phase three-level ZVZCS DC-DC converter using phase-shift PWM strategy. The analysis shows the presence of the ZVS turn-on condition at outer switches of Branches A, B and C, ZVZCS turn-on and turn-off conditions at inner switches of the branches. For ZCS turn-off conditions at inner switches, DC blocking...
In mobile adhoc networks (MANETs), one of the fundamental issues is to perform the address autoconfiguration for the incoming nodes, as no centralized server exists in MANETs to manage this configuration process. Every node needs to be given a unique IP address so that the new node can communicate with the already existing nodes in the network. The nodes in the MANET are free to move randomly, so...
Recently, various contents sharing methods that are available on peer-to-peer networks have been actively researched; a peer-to-peer network generally consists of a number of terminals or computer systems evenly connected to each other. In most of previous studies, shared content items are supposed to be kept in the storages of the peers, and effective ways of contents sharing under the environment...
Antennas which are used to transmit and receive ultra wideband impulse radio (UWB-IR) signals should be able to accomodate its large bandwidth. Moreover, the signals should not be distorted too much when they pass through the antennas. Therefore, the transfer function of antennas should be known the performance. The indoor and the outdoor localization are usually evaluated by using the extension of...
In this paper a comparison of delay spread, coherence bandwidth, root mean square delay spread and average delay estimated in both frequency bands 0.1–30 MHz and 0.1–100 MHz for indoor power-line communication network. The channel transfer function is computed via the application of transmission line theory. In this paper, it is shown that the 90th percentile of the coherence bandwidth at 0.9 correlation...
Model transformation by example is a novel trend in model-driven software engineering. The rationale behind this is to utilize existing knowledge represented by source and target models of previously developed systems; such as requirements analysis and software design models, respectively. Such knowledge can be utilized to derive transformation rules to be applied in future system developments. To...
A significant amount of the total power in highly synchronous systems gets dissipated over clock networks. Therefore, low-power clocking schemes would be promising approaches for high performance designs. To reduce the power consumption and delay, a new flip-flop circuit technique has been designed in CMOS domino logic. These flip-flops are a class of dynamic circuit that can be interfaced with both...
This paper demonstrates a second order sliding mode control for a voltage source inverter. A super twisting control algorithm (STA) is used to control the output ac voltage of the voltage source inverter circuit. Using the algorithm tracking of the output voltage is observed with small steady state error. The controller is found to be robust against sudden changes in the load. The output voltage waveform...
White-RGB (WRGB) color filter array (CFA)-based CMOS sensor is a new and popular technique to improve the image quality directly with a higher sensitivity White (W) filter. Considering there is no color information in the pixel assigned to W, color separation from W raw data is necessary. We propose a color separation method based on a novel physicallike virtual color filters model for the WRGB CFA-based...
A polyglot synthesizer is a text-to-speech synthesis system, that converts a mixed-language text into speech with single speaker's voice. The straightforward way to develop such a system is to build multiple language-specific synthesizers or to build a single synthesizer after merging common phonemes. In these cases, either language-switching between languages or influence of one language phoneme...
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