QAM and OFDM Basics
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Күн бұрынQAM, Quadrature Amplitude Modulation
OFDM, Orthogonal Frequency Domain multiplexing - is a complex form of modulation that combines QAM and frequency-division multiplexing (FDM).
QAM sub-carriers are spaced closely to enable high data rate with long symbol duration.
Dror Regev explains QAM and OFDM.
Academic articles by Dror Regev on RF related topics, can be found at scholar.google.com/citations?...
@ATUS1213 4 жыл бұрын
~ @9:35 , how T can determine the freq domain graph? as per your saying - if I capture constant/same freq signal for different T, I am going to get different graphs??? Thanks
@Munies 10 ай бұрын
in 10:15 and 12:30, why some peaks of the sub-carriers are negative? Some of the sinc functions (scalated with their corresponding complex number) appear to be up side down... why is that?
@glebuchitel1577 Жыл бұрын
Why is it always displayed in frequency domain graph the carriers are the same amplitude? If we use QAM, carriers are different magnitude, right?
@perceivethepremier4816 3 жыл бұрын
Dear sir, I have a doubt regarding QAM, If I 16 QAM gives a straight line in the constellation, what does it mean?
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