download p2ktools vs
Name: download p2ktools vs
Category: Free
Published: perpticoorna1970
Language: English
Select another clipboard.
Public clipboards featuring this slide.
Looks like you’ve clipped this sl > already.
Signals & Systems PPT.
LinkedIn Corporation © 2019.
Jay Baria.
Classification of signals and systems as well as their properties are given in the PPT .Examples related to types of signals and systems are also given .
Share Clipboard.
2 Comments 37 Likes Statistics Notes.
1. Department of Electronics & Communication Engineering Presentation On > 0 Right- and left-sided signals: A right-sided signal is zero for t T where T can be positive or negative. Causal &Non-causal Signals: 8. Deterministic & Random Signals Deterministic signals : Behavior of these signals is predictable w.r.t time There is no uncertainty with respect to its value at any time. These signals can be expressed mathematically. For example x(t) = sin(3t) is deterministic signal. 9. Behavior of these signals is random i.e. not predictable w.r.t time. There is an uncertainty with respect to its value at any time. These signals can’t be expressed mathematically. For example:Thermal Noise generated is non deterministic signal. Random Signals: 10. Even &Odd Signals Even signals xe(t) and odd signals xo(t) are defined as xe (t) = xe (−t) and xo (t) = −xo (−t). Any signal is a sum of unique odd and even signals. Using x(t) = xe(t)+xo(t) and x(−t) = xe(t) − xo(t), yields xe(t) =0.5(x(t)+x(−t)) and xo(t) =0.5(x(t) − x(−t)). 11. Even: x(−t) = x(t) x[−n] = x[n] Odd: x(−t) = −x(t) x[−n] = −x[n] Any signal x(t) can be expressed as x(t) = xe(t) + xo(t) ) x(−t) = xe(t) − xo(t) where xe(t) = 1/2(x(t) + x(−t)) xo(t) = 1/2(x(t) − x(−t)) Even &Odd Signals: 12. Bounded &Unbounded Signals: Every system is bounded, but meaningful signal is always bounded 13. Power and Energy Signals Power Signal Infinite duration Normalized power is finite and non-zero Normalized energy averaged over infinite time is infinite Mathematically tractable Energy Signal Finite duration Normalized energy is finite and non-zero Normalized power averaged over infinite time is zero Physically realizable 14. Elementary signals Step function Impulse function Ramp function 15. Unit Step function: 16. Unit ramp function: Unit impulse function: 17. What is a System? Systems process input signals to produce output signals. Examples: A circuit involving a capacitor can be viewed as a system that transforms the source voltage (signal) to the voltage (signal) across the capacitor A CD player takes the signal on the CD and transforms it into a signal sent to the loud speaker A communication system is generally composed of three sub- systems, the transmitter, the channel and the receiver. The channel typically attenuates and adds noise to the transmitted signal which must be processed by the receiver 18. How is a System Represented? A system takes a signal as an input and transforms it into another signal In a very broad sense, a system can be represented as the ratio of the output signal over the input signal That way, when we “multiply” the system by the input signal, we get the output signal This concept will be firmed up in the coming weeks System Input signal x(t) Output signal y(t) 19. Types of Systems Causal & Non-causal Linear & Non Linear Time Variant &Time-invariant Stable & Unstable Static & Dynamic 20. Causal Systems Causal system : A system is sa >
Published on Apr 14, 2017.
http://speedfitzsimply1989.eklablog.com/ati-hd-4800-series-driver-d...