1 / 2

Analog Signaling

. inputs are functions of time. linear. A linear time-invariant system is characterized by the eigenfunctions. Analog Signaling. gain. phase. transfer function. A ( w ) = amplitude response – limits bandwidth Θ ( w ) = phase shift – distorts pulse shape. limits signaling

oria
Download Presentation

Analog Signaling

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. inputs are functions of time linear A linear time-invariant system is characterized by the eigenfunctions Analog Signaling gain phase transfer function A(w) = amplitude response – limits bandwidth Θ(w) = phase shift – distorts pulse shape limits signaling capacity Sampling Theorem: A band-limited signal of duration T and of bandwidth W can be reconstructed perfectly by 2WT samples, at evenly spaced intervals. The sample vector (x1, …, x2WT) can be viewed as a point in 2WT-dimensional space. A.9

  2. These samples can tell us the signal’s energy and their radius (distance from origin) And the signal power (energy per unit time) is The noise added to the channel has power N, and a corresponding radius The total power (signal + noise) has radius How many spheres of noise can fit in? # of messages The amount of information sent is And the rate of info is E.g. (telephone) Appendix (end.)

More Related