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Analog vs. Digital Modulation In a paragraph (or less), describe why phase modulation can be used to perform analog encoding, but phase shift keying (PSK) cannot, even though both methods change the phase of the carrier.

Analog vs. Digital Modulation In a paragraph (or less), describe why phase modulation can be used to perform analog encoding, but phase shift keying (PSK) cannot, even though both methods change the phase of the carrier.

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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Analog vs. Digital Modulation In a paragraph (or less), describe why phase modulation can be used to perform analog encoding, but phase shift keying (PSK) cannot, even though both methods change the phase of the carrier. Phase Shift Keyed Constellations Draw constellation diagrams for the following modulation schemes and answer the associated questions for each. 1. Offset 8PSK a. How many bits can be represented by each point? b. How many channels are present? 2. Offset 8APSK a. Does the amplitude help or harm the distribution of points? b. How many channels are present?
Transcribed Image Text:Analog vs. Digital Modulation In a paragraph (or less), describe why phase modulation can be used to perform analog encoding, but phase shift keying (PSK) cannot, even though both methods change the phase of the carrier. Phase Shift Keyed Constellations Draw constellation diagrams for the following modulation schemes and answer the associated questions for each. 1. Offset 8PSK a. How many bits can be represented by each point? b. How many channels are present? 2. Offset 8APSK a. Does the amplitude help or harm the distribution of points? b. How many channels are present?
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