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111 2001, cisco Systems, Inc. All rights 2001, cisco Systems, Inc. All rights NumberPresentation_IDQPSK and 16-QAM Digital ModulationRon Hranac333 2001, cisco Systems, Inc. All rights Information such as sound (audio), images (video), and digital data can be transmitted from one point to another using radio waves This is done by modulating an RF signal a carrier with the information to be transmitted Modulationis the variation one or more properties of an RF signal to represent the information being transmitted444 2001, cisco Systems, Inc. All rights One or more of the following properties of an RF signal may be varied to convey information:Amplitude Amplitude of a carrier is varied. This is called amplitude modulation (AM).Frequency Frequency of a carrier is varied.
© 2001, Cisco Systems, Inc. All rights reserved. 2 Session Number Presentation_ID QPSK and 16-QAM Digital Modulation Ron Hranac
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