December 2019
Beginner
510 pages
12h 7m
English
Content preview from Networking Fundamentals
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Modulation
The modulation of radio waves can be a very technical topic and goes well beyond the objectives of the exam. With that in mind, I would like to summarize its purpose here, and briefly mention it as we go through the various standards, as I feel it is relevant in the real world. Modulation can be simplified to mean a method of modifying the transmission of radio waves to increase efficiency. This modification can be applied to either the power (amplitude), frequency, or phase.
By modulating the power, you are increasing or decreasing the height of the sine wave; modulating the frequency involves changing the frequency in such a way that the peaks of the sine waves are nearer or further away from each other. The higher the frequency ...
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