= Figure 6 is the differential PCM (DPCM) transmitter. Consider a message signal as input to the DPCM system: m(t) = 3co

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Figure 6 Is The Differential Pcm Dpcm Transmitter Consider A Message Signal As Input To The Dpcm System M T 3co 1 (134.59 KiB) Viewed 32 times

= Figure 6 is the differential PCM (DPCM) transmitter. Consider a message signal as input to the DPCM system: m(t) = 3cos(100nt + 0.057) The message signal is sampled at a rate of 2000 per second. The sampled data m[k]=m(kTs), while Ts is the sample interval. Consider using the simple first-order estimator so that î,[k]= m[k – 1] with the prediction error is d[k]. a) Write down the expression of m[k]. b) Determine the peak value of d[k]. c) Evaluate the amount of SNR improvement in dB that can be achieved by this DPCM over a standard PCM. m[k] d[k] 4,[k] To channel Quantizer ng[k] Predictor m (1) (a) Figure 6 DPCM transmitter