Explains Quadrature Amplitude Modulation (QAM) from a signals perspective, showing how signals are sent in the passband. Also explains how xDSL sends QAM signals over the baseband channel without a carrier.
Related videos: (see http://www.iaincollings.com)
• How do complex numbers relate to real signals?: https://youtu.be/TLWE388JWGs
• What is a Constellation Diagram? https://youtu.be/kfJeL4LQ43s
• OFDM and the DFT https://youtu.be/Z4LIgNgNAlI
• Fourier Transform of cos function: https://youtu.be/McITNfo3LKc
• Convolution with a Delta function: https://youtu.be/TIcfY19dk0c
• How does OFDM Overcome ISI? https://youtu.be/xcQ6rtIXv6M
• What is a Cyclic Prefix in OFDM? https://youtu.be/AJg57AEBtNw
• How does the Discrete Fourier Transform DFT relate to Real Frequencies? https://youtu.be/pIFz84oj9cA
For a full list of Videos and Summary Sheets, goto: http://www.iaincollings.com
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