Fourier transform

its Fourier transform is called short-time Fourier transform (Satish 1998). The principle of STFT is to divide the initial waveform signal into small segments with short-time window, apply Fourier transform to each segment. However, due to the signal segmentation, this method has limitation in time–frequency resolution. It can only be applied to analyze the segmented stationary signal or the approximate stationary signal, but for the non-stationary signal, when

Magnetic resonance imaging (MRI) is a technique that uses a magnetic field and radio waves to create detailed images of the organs and tissues within your body. MRIs are largely used in the medical field today because of their ability to create detailed images of the human body which can be used for diagnostic purposes. In 1971 a paper in the journal Science Raymond Damadian, an American physician and professor at the Downstate Medical Center State University of New York reported that tumors and

2007-2008 JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY, HYDERABAD B.TECH. ELECTRONICS AND COMMUNICATION ENGINEERING I YEAR COURSE STRUCTURE Code Subject English Mathematics - I Mathematical Methods Applied Physics C Programming and Data Structures Network Analysis Electronic Devices and Circuits Engineering Drawing Computer Programming Lab. IT Workshop Electronic Devices and Circuits Lab English Language Communication Skills Lab. Total T 2+1 3+1 3+1 2+1 3+1 2+1 3+1 25 P/D 3 3 3 3 3 15 C 4 6 6 4

Treated glycerol and commercial glycerol were analyzed using the Fourier Transform Infrared Spectrometry (FTIR) to determine the functional group. The functional group is a group of atoms that replace the hydrogen in the organic compound. The structure of organic family compounds and their properties are defined by organic compounds. Table 4.3 shows the comparison data for the glycerol residue, recovered glycerol and commercial glycerol. Table 4.3: Comparing the functional group for treated glycerol

Large power modern transformers are vital components and very expensive in electric power systems. Forthwith, it is very important to reduce the duration and frequency of unwanted outages that results in a high demand imposed on power transformer protection relays, this includes the requirements of dependability related with no mal-operations, operating speed related with short fault clearing time to avoid extensive damage or to preserve power quality and power system stability and security related

dissolution parameters such as dissolution efficiency (DE), mean dissolution time (MDT), initial dissolution rate (IDR), and mean dissolution rate (MDR) were calculated to assess the dissolution profiles [29,30]. Solid state characterization Fourier transform infrared spectroscopy (FTIR) FTIR spectrum of the samples was recorded by KBr disc method using Perkin Elmer FT-IR Spectrometer (Paragon 1000, PerkinElmer, Waltham, Massachusetts, USA) to illustrate the promising interactions among components

OFDM is a great technique to handle impairments of wireless communication channels such as multipath propagation. Hence, OFDM is a practical candidate for future 4G wireless communications techniques [1]-[4]. On the other hand, one of the major drawbacks of the OFDM communication system is the drift in reference carrier. The offset present in received carrier will lose orthogonality among the carriers. Hence, the CFO causes a reduction of desired signal amplitude in the output decision variable and

Abstract Biometric systems are used for recognising a user on the basis of biometric traits he have. During authentication some of the frequently asked questions are “Is he who he claims to be?”, “Is he a valid user for gaining access to the system?”. Biometric system answers all these questions by authenticating the users. Every second information is shared and transferred between people and it is important to make sure that what is sent by sender is what received by the receiver thus raising the

SOVA-based decoding is generally inferior to the MAP-based decoding in terms of BER performance. The authors show that the original SOVA introduces two types of distortions in its output. They show that the performance of the SOVA can be improved by normalizing its output and eliminating the correlation between intrinsic and the extrinsic information derived in each decoding iteration. A modified updating rule can also be applied to improve performance. It was discovered that the original SOVA proposed

Dynamic range defined as the range of the lightest and darkest areas of an image which camera can successfully capture without losing detail. Our real-world environment dynamic range is high that exceeds the capabilities of modern display devices with limited dynamic range. A problem appears when displaying high dynamic range image in low dynamic range display devices, so the tone mapping technique has been used to solve this problem. In this paper, new adjustment tone mapping technique is presented