Download PDF by Yuriy Shmaliy: Continuous-time signals

By Yuriy Shmaliy

ISBN-10: 1402048173

ISBN-13: 9781402048173

ISBN-10: 1402048181

ISBN-13: 9781402048180

Continuous-Time signs is a longer description of continuous-time signs regarding the process signs and platforms. As a time-varying strategy of any actual kingdom of any item, which serves for illustration, detection, and transmission of messages, a latest electric sign possesses, in functions, many particular homes. To make attainable for readers to accommodate signs unfastened, the ebook systematically covers significant precept foundations of the indications idea. The illustration of indications within the frequency area (by Fourier remodel) is taken into account with powerful emphasis on how the spectral density of a unmarried waveform turns into that of its burst after which the spectrum of its teach. other forms of amplitude and angular modulations are analyzed noticing a consistency among the spectra of modulating and modulated signs. The strength and gear presentation of signs is given in addition to their correlation homes. eventually, featuring the bandlimited and analytic signs, the e-book elucidates the equipment in their description, transformation (by Hilbert transform), and sampling.

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Continuous-time signals by Yuriy Shmaliy PDF

Continuous-Time signs is a longer description of continuous-time signs with regards to the process signs and platforms. As a time-varying means of any actual country of any item, which serves for illustration, detection, and transmission of messages, a latest electric sign possesses, in purposes, many particular homes.

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Explain how a distance to a target is measured with an impulse radar? What should be a pulse waveform to obtain a minimum measurement error? Why not to use a periodic harmonic signal? 2. In communications, two modulated (by voice) signals are sent in the same direction at the same time. Can you impose some restrictions for these signals to avoid their interaction in time and space? 3. Why precise signals are needed for accurate positioning systems? Explain the necessity of using the coded signals in Fig.

Why? Which signal is energy signal and which is power signal? Why? 5 (Signals orthogonality). Given the following signals. Find the orthogonal pairs among these signals. 1. x(t) = A0 cos(ω0 t + ϕ0 ) 2. x(t) = A(t) cos[ω0 t + ϕ(t)] 3. x(t) = A0 cos(ω0 t + ϕ0 − π/2) 4. 6 (Signals presentation by elementary functions). 20 shows several nonperiodic impulse signals. 9). 7. Give a graphical presentation for the following signals: 1. x(t) = 2[u(t) − u(t − 2)] 2. x(t) = u(t) + u(t − 1) − 4u(t − 2) + u(t − 3) + u(t − 4) 3.

22. Given a complex harmonic signal x(t) = ejω0 t . 36), ∞ e−j(ω−ω0 )t dt = 2πδ(ω − ω0 ) , X(jω) = −∞ representing a spectral line (Dirac delta function) at a carrier frequency ω0 . 73) −∞ and it is stated by the Parseval16 theorem that x 16 2 = X 2 . 74) Marc-Antoine de Parseval des Chsnes, French mathematician, 27 April 1755–16 August 1836. 72) is assumed to be known in time from −∞ to ∞, then the Fourier transform becomes low efficient when the frequency content of interest is of a signal localized in time.

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Continuous-time signals by Yuriy Shmaliy

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