ch3.1a_dsb_am

ch3.1a_dsb_am - EEN EEN 404 Communication Systems Ch3.1a...

Info iconThis preview shows pages 1–7. Sign up to view the full content.

View Full Document Right Arrow Icon
EN 404 EEN 404 Communication Systems Ch3.1a Double Ch3.1a Double-Sided Modulation Sided Modulation Amplitude Modulation
Background image of page 1

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

View Full DocumentRight Arrow Icon
2 asic Modulation Techniques Basic Modulation Techniques troduction to modulation Introduction to modulation Motivation ising the signal spectrum to a frequency for raising the signal spectrum to a frequency for i) efficient radiation ) antennas of reasonable size ii) antennas of reasonable size iii) government (FCC) requirement multiplexing – multiple signals are transmitted simultaneously multi-component signal: e.g., audio has only one component, but color TV has RGB components and different intensity for each
Background image of page 2
3 Model message signal m(t) transmitted signal is the carrier amplitude is the carrier frequency is the carrier phase e message signal (t) transmitted through the communication the message signal m(t) is transmitted through the communication channel by impressing (modulating) it on x c (t)
Background image of page 3

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

View Full DocumentRight Arrow Icon
4 • transmitted signal (t) impressed on ) If m(t) is impressed on x c (t) in linearly linear modulation hase modulation phase modulation frequency modulation
Background image of page 4
5 Classification: Linear modulation Digital Analog ngle modulation Phase modulation (PM) Continuous-wave modulation g Angle modulation Freq. modulation (FM) Analog pulse modulation
Background image of page 5

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

View Full DocumentRight Arrow Icon
6 Linear Modulation Definition: carrier amplitude A(t)
Background image of page 6
Image of page 7
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 28

ch3.1a_dsb_am - EEN EEN 404 Communication Systems Ch3.1a...

This preview shows document pages 1 - 7. Sign up to view the full document.

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