ch3.2_angle_modulation_handout

# ch3.2_angle_modulation_handout - 1 1 EEN 404 EEN 404...

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Unformatted text preview: 1 1 EEN 404 EEN 404 Communication Systems Communication Systems Ch3.2: Angle Modulation Ch3.2: Angle Modulation 2 ♦ Classification: Linear modulation Phase modulation Digital Analog Angle modulation Analog pulse modulation (PM) Freq. modulation (FM) Continuous-wave modulation 3 3.2 Angle Modulation 3.2 Angle Modulation ♦ Definition: either the phase or the time derivation of the phase of the carrier is varied linearly with the message signal m(t) ♦ Model: ♦ Types:  Phase modulation  Phase modulation  Frequency modulation 2 4  Modulation: ♦ instantaneous phase: ♦ phase deviation: ♦ instantaneous frequency  definitions ♦ instantaneous frequency: ♦ frequency deviation: 5  Phase modulation (PM):  Frequency modulation (FM): f d : frequency derivation constant phase derivation 6  Example: ♦ instantaneous phase: ♦ phase deviation: ♦ frequency deviation: ♦ maximum phase deviation: ♦ maximum frequency deviation: ♦ instantaneous frequency: 3 7  Example 1: m(t) 1 t PM FM 8 (a) Message signal....
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## This note was uploaded on 10/28/2010 for the course EEN 404 taught by Professor X.cai during the Spring '10 term at University of Miami.

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ch3.2_angle_modulation_handout - 1 1 EEN 404 EEN 404...

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