The QAM is sent in an analog carrier wave which is where your MOdualteDEModulate comes in. Yes my ISP is sending me an analog signal which my Modem will modulate to digital that can be read by my network. Yours might be different if you don't use a DOCSIS based system.
QAM (quadrature amplitude modulation) signals are comprised of sine waves with varying amplitude and phase shifts, which means even though we call them digital signals, they are actual analog signals carrying digital data.
QAM (quadrature amplitude modulation) signals are comprised of sine waves with varying amplitude and phase shifts, which means even though we call them digital signals, they are actual analog signals carrying digital data.