Module 4: Quadrature Amplitude Modulation

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  1. Professor David S. Ricketts
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Комментарии
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This lecture made me to know the difference between PSK and QAM. Thank you

chudi
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The 1.6 comes from the fact that the radius on the right has to be bigger for the same distance red than the square on the right. The a actual number just comes from the geometry of a circle and a square.

davidricketts
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Exactly that I was want to see! Thanks from Kazakhstan! I was wondering about sine wave modulated but at least square is good too

kapoon
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Thanks David, this was a good explanation :)

hermandragland
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Thanks a lot!
I have a question. So if the data in QAM relies on the amplitude, and waves change amplitude with the distance. How do make sure we don't lose the data?

muhannadak
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Sir, QAM modulator transmitter capable of transmitting PAM signals ?

Veritasygm
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yes, it is very good explanation, I have question How the value 1.6dB came? Can please give answer

nagarajuparicherla