The conversion of analogue signals to digital signals therefore eliminates the problems caused by attenuation. Pulse Code Modulation (PCM) is the simplest form of waveform coding. Waveform coding is ...

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Abstract: Pulse code modulation (PCM) is being explored as a possible technique for greatly increasing the information handling capacity of conventional telephone cables. For example, there is a ...

The "pulse code" in PCM comes from the telephone company's method of sending a pulse or no pulse down the line. Mu-Law signals typically ride on a single 64 Kbps DS0 channel in a T1 line.