Pcm Modulation Block Diagram. Pulse code modulation. This low pass filter blocks all the frequency components above f m hz this means that now the signal x t is bandlimited to f m hz.
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Following is the block diagram of pcm which represents the basic elements of both the transmitter and the receiver sections. The figure below shows the block diagram representing a pcm system it is basically composed of a transmitter a transmission path and a receiver. The block diagram for the generation delta modulated signal is shown below.
In this modulation the sampling rate is higher to reduce the number of steps to decrease the bandwidth of the signal.
Here a feedback path is also provided to the circuit where the output of modulator acts as input to the comparator. Pcm transmitter in pcm transmitter the signal x t is first passed through the low pass filter of cut off frequency f m hz. This is to say that you. Differential pulse code modulation uses the predictive waveform coding technique for signal conversion.
