Digital signal processor [edit] Typical characteristics Digital signal processing algorithms typically require a large number of mathematical operations to be performed quickly and repetitively on a set of data. Signals (perhaps from audio or video sensors) are constantly converted from analog to digital‚ manipulated digitally‚ and then converted again to analog form‚ as diagrammed below. Many DSP applications have constraints on latency; that is‚ for the system to work‚ the DSP operation must
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(b) except shifted backwards in time and multiplied by -1. ⎛ ⎞ A ⎜ cos(π fT ) cos(π fT ) ⎟ − ⋅ exp( jπ fT ) G( f ) = ⎜ 1 ⎟ 2π ⎜ f − 1 ⎟ f+ 2T 2T ⎠ ⎝ ⎡ ⎤ A ⎢ exp( j 2π fT ) exp( j 2π fT ) ⎥ = − ⎢ ⎥ 1 4π ⎢ f − 1 ⎥ f+ 2T 2T ⎦ ⎣ (e) Because the Fourier transform is a linear operation‚ this is simply the summation of the results from (b) and (d) ⎡ ⎤ A ⎢ exp( j 2π fT ) + exp(− j 2π fT ) exp( j 2π fT ) + (− j 2π fT ) ⎥ − G(
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sampling theorem – Discrete – time signals‚ systems – Analysis of discrete time LTI systems – Z transform – Convolution (linear and circular) – Correlation. UNIT II FREQUENCY TRANSFORMATIONS Introduction to DFT – Properties of DFT – Filtering methods based on DFT – FFT Algorithms Decimation – in – time Algorithms‚ Decimation – in – frequency Algorithms – Use of FFT in Linear Filtering – DCT. UNIT III IIR FILTER DESIGN Structures of IIR – Analog filter design – Discrete time IIR filter from
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FTIR ANALYSIS Ed Hare‚ Ph.D. FTIR (Fourier Transform Infrared) analysis provides spectral information that is essentially a molecular fingerprint for organic‚ polymeric‚ and in some case inorganic materials. This technique is extremely useful for identifying base polymer compositions and organic contaminants. The FTIR spectrum of the unknown material can be compared for “best matches” with libraries of spectra that have been cataloged for known materials. An example of an FTIR spectrum for
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Case study A blue paint layer sample was collected from the wall decorations of the mortuary temple of Ramesses III (Medinet Habu. This temple is one of the largest memorial temples in Egypt. It measures 320 m in length (east to west) and about 200 m in width (north to south)‚ built with order of the Pharaoh Ramesses III (c.1184–1151 BC the 20th Dynasty). The micro-XRF spectrometer (SPECTRO‚ COPRA model) used to analyze the sample includes a side-window X-ray tube with Mo anode (Oxford Instruments
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The winged bean (Psophocarpus tetragonolobus) is a twining‚ perennial herbaceous legume which can climb to 3-4 meters (Kantha and Erdman‚ 1985). As a leguminous plant‚ winged bean can be used in almost all parts of the plant. Fruit‚ leaves‚ flowers‚ bulbs and seed are edible and contain high protein and oil (Kotaru et al.‚ 1987; Dwiani et al.‚ 2014). The mature‚ dry seed is the most nutritious part of the winged bean. Their outstanding nutritive quality is based‚ above all‚ on their high protein
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Abstract The Greek-Roman Isis temple is located on the west bank of Luxor; Upper Egypt was made of sandstone and decorated with different kinds of wall paintings. It suffers from many causes of deterioration and degradation mainly ground water‚ salt weathering‚ and different types of dirt accumulations on the relives and paint surface such as soot‚ grease‚ wax‚ biodeteriorated colored patches‚ bat patches‚ waste of birds and even house fly specks. All these lead to the gradual disappearance of paintings
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Short Questions: Differentiate between guided media and unguided media. Differentiate between an analog and a digital electromagnetic signal. What are three important characteristics of a periodic signal. What is the relationship between the wavelength and frequency of a sine wave. Define fundamental frequency. What is the relationship between a signal’s spectrum and its bandwidth. What is attenuation? Define channel capacity. What key factors affect channel capacity? Problems:
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modulation power efficiency. c. Sketch the modulated signal of part (a) in the time domain. d. If b = 0.5‚ repeat part (b). 3. The output signal from a DSB-SC AM modulator is u(t) = 20 cos(300πt) + 6 cos(280πt) + 6 cos(320πt) a. Determine the Fourier transform U (f) of u (t). b. Determine the normalized message signal mn(t) (which satisfies max{lmn(t)l} = 1) and the carrier signal c (t). c. Determine the average power of u (t). d. Determine the modulation index. e. Determine the modulation efficiency
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rac “CHANNEL TRACKING IN WIRELESS OFDM SYSTEMS” A Project report submitted in partial fulfillment of requirements for the award of degree of BACHELOR OF TECHNOLOGY in ELECTRONICS AND COMMUNICATION ENGINEERING Submitted by B.M.SAI SATHEESH (097Y1A0404) Under the esteemed guidance of Mr. P.Anil Kumar DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING A1 GLOBAL INSTITUTE OF ENGINEERING AND TECHNOLOGY Approved by A.I.C.T.E Affiliated to J.N.T.U Kakinada Markapur-523316
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