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It is important to characterize the noise accurately before including its structure in the formulations of algorithms. The distribution suggested in this paper is suitable for the ambient noise having kurtosis between 2.30 and 3. The ambient noise having low kurtosis is mainly dominated by shipping traffic which is having low frequency range.
This paper presents a online multi-font numeral recognition method, whose main aim is to recognize overlaid time numeral from video. The portion of the video frame containing the time text is binarized and segmented. Minimum rectangular bounding box is inserted over the isolated numeral images. Euler number of numeral images is found out to initially differentiate into three groups. Then, the numerals...
In any communication system, noise gets added with the signal at receiver end. Noise figure is one of the measures of performance of a receiver circuit with respect to noise. It is seen that receiver circuits are employed with FET devices due to low power consumption, low cost and high package density. With this paper LNA design of Optically Gated MOSFET (OGMOSFET) is carried out as LNA is the first...
Diabetic retinopathy is damage to the retina of human eye which is caused by the complication of increase in blood glucose level which can eventually leads to blindness. The longer the patient has diabetes the higher the chance of developing diabetic retinopathy. DR is the deterioration of retinal blood vessel. Microaneurysm is one of the earliest symptoms of Diabetic Retinopathy. Microaneurysms occur...
This paper shows an accurate crosstalk noise analysis for RLCG on-chip VLSI global interconnects and also presents a fast response and accurate estimation of crosstalk noise generated due to coupling effect in multiple RLCG transmission lines. Due to the coupling effect, the performance of interconnect is degraded. This degradation is seen by the electronic design automation (EDA) tools. This RLCG...
In this paper analysis of noise margin and power dissipation of a novel low power proposed 8T SRAM cell has been reported. In the proposed structure two voltage sources are connected with the Bit line and the other connected with the Bit bar line are used in order to reduce voltage swings at the output nodes of bit and bit bar line during the write operation. Static noise margin values have been calculated...
This paper presents a new method to estimate the crosstalk noise for on-chip VLSI RLC global interconnects using 2-n model. Distributed RLC on-chip global interconnects can be modelled for an above low frequency operation with sufficient accuracy and better result. To calculate this crosstalk noise we apply the unit step input to the aggressor network side which is adjacent to the victim network....
In modern communication systems, satellites are playing a vital role. They are providing many mandatory services such as weather forecast, mobile applications, TV telecast, military applications, etc., Government sectors, NGOs and educational institutions are keen in launching satellites for their self defined purposes. Such satellites being launched can be traced only if a perfect link budget is...
Image pre-processing techniques are used to improve the quality of an image before processing into an application. This uses a small neighborhood of a pixel in an input image to get a new brightness value in the output image. These preprocessing techniques are also called as filtration and resolution enhancement. The medical image quality parameters are mainly noise and resolution. The main objective...
This article illustrates application of a concurrent dual-band RF system for human respiration and heartbeat detection. The system simultaneously operates at 2.4-/5.2-GHz band. Overall performance of the system is studied in ADS (Advanced Design System) simulation platform, wherein measured S-parameters of dual-band subsystems are utilized. In the experimental setup, signals are measured with a human...
The field of character recognition has attracted more concentration of researchers for recognizing text from ancient documents. But because of some of the problems like error in recognition in text lines, overlapped characters, joined text line, ages, damage in text lines it is becoming more challenging for them to recognize the text. However, Most of devnagari handwritten ancient documents are not...
Image Segmentation is necessary factor in the medical image processing. According to the current scenario of health care society, detection of brain tumor is a must. Automated brain disorder diagnosis with MR images is one of the challenging medical image analysis methodologies. Segmentation is used to separate the abnormal tumor portion in brain. These tumors are inhomogeneous, unsharp, and faint...
Domino circuits are becoming increasingly popular due to their speed and area advantages over their static counterparts. Every new generation of mobile processors employs domino circuits in critical paths to reduce delay. Multiplexers are one such combinational circuit finding extensive use in register files and execution units where data needs to be routed to one of the several operators. Power consumption,...
New improved methods for denoising Electrocardiogram (ECG) signal are proposed based on adaptive filter with Empirical mode Decomposition (EMD) and Ensemble Empirical mode Decomposition (EEMD). EMD and EEMD methods are used to decompose the ECG signal into intrinsic mode functions (IMF). Performance of traditional EMU based denoising methods improved by adaptively processing the IMF components which...
The high frequency microwave components such as an amplifier, oscillator et cetera have a wide range of applications in today's world of Digital Communication. These are mainly used in transponders and other mobile and radar applications which are inaccessible if faults or error occur in them. So a better solution is to perform a complete analysis of the device under all possible conditions before...
A high gain and low-power down conversion mixer for short range wireless applications is designed in 0.18 μm complementary metal oxide semiconductor (CMOS) technology. During the design, we have adopted current-bleeding technique and a folded Gilbert topology. The mixer is tested at two frequencies e.g., 2.4 GHz and 5.2 GHz. Simulation results revealed that under 1.8 V power supply, the proposed mixer...
Impulse noise is a spark that affects the contents of digital images. It also occurs during image acquisition, transmission due to malfunctioning of pixel elements in the camera sensors, faulty memory locations, timing errors in analog to digital conversion and bit errors during transmission. Removal of impulse noise involves detection followed by filtering mechanism. There are two types of impulse...
It is always desired to have high transmission rates over severe time-dispersive multi-path channels without usage of a complex receiver implementation. In this case the Multicarrier Code Division Multiple Access (MC-CDMA) is used which is a combination of conventional Code Division Multiple Access (CDMA) and Orthogonal Frequency Division Multiplexing (OFDM). Better BER performances are achieved by...
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