ch3.2_angle_modulation

ch3.2_angle_modulation - 1 EEN 404 EEN 404 ommunication...

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Unformatted text preview: 1 EEN 404 EEN 404 ommunication Systems ommunication Systems Communication Systems Communication Systems Ch3.2: Angle Modulation Ch3.2: Angle Modulation 2 ♦ Classification: Digital Linear modulation Phase modulation Analog Angle modulation (PM) req modulation Continuous-wave modulation Analog pulse modulation Freq. modulation (FM) 3 2 Angle Modulation 2 Angle Modulation 3.2 Angle Modulation 3.2 Angle Modulation efinition: ther the phase or the time derivation of the phase of the carrier is ♦ 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: hase modulation  Phase modulation  Frequency modulation 4  Modulation: ♦ instantaneous phase:  definitions ♦ phase deviation: stantaneous frequency: ♦ instantaneous frequency: ♦ frequency deviation: 5  Phase modulation (PM):  Frequency modulation (FM): f d : frequency derivation constant hase derivation phase derivation 6  Example: ♦ instantaneous phase: ♦ instantaneous frequency: ♦ phase deviation: ♦ frequency deviation: ♦ maximum phase deviation: ♦ maximum frequency deviation: 7  Example 1: m(t) 1 t M 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 - 1 EEN 404 EEN 404 ommunication...

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