part2 - Part 2: Classification of Signals and Systems...

Info iconThis preview shows pages 1–5. Sign up to view the full content.

View Full Document Right Arrow Icon
Part 2: Classification of Signals and Systems Signal z Signal: a function of time that represents a physical variable of interest associated with a system microwave signal
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Classification of Signals z Deterministic Random z Continuous Discrete z Analog Digital z Periodic Non-periodic z Non-singular Singular z Energy Power Deterministic or Random z Deterministic: Signal can be modeled as a specific function of time e.g. traffic light, x(t)=sin(10t) z Random: Signal has some uncertainty, can only be described by their statistical properties e.g. noise, wave
Background image of page 2
Continuous or Discrete z Continuous-time signal: the signal must be defined at all instants in time. z Discrete-time signal: the signal is defined only at particular instants of time. time time Analog or Digital z Analog signal: the signal can have a continuous range of amplitudes z Digital signal: the signal is quantized and has finite set of amplitudes. time time
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Periodic or Non-periodic z Periodic signal: the signal satisfy the following condition: x(t) = x(t+T) for all t (1) where T is known as the period of the signal if it is the minimum positive value satisfying (1). z Non-periodic (aperiodic) signal: the signal does not satisfy (1). time time Energy or Power z Total energy of an arbitrary signal x(t) z Average power of the signal x(t) z x(t) is an energy signal 0<E< , P=0 z x(t) is a power signal 0<P< , E= z Neither energy or power signals if neither properties are satisfied.
Background image of page 4
Image of page 5
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 13

part2 - Part 2: Classification of Signals and Systems...

This preview shows document pages 1 - 5. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online