engineering recuitment GATE ECE 2023-24 Test Series Communication Systems Introduction To Digital Modulation Baseband Modulation
Which one of the following statements about differential pulse code modulation (DPCM) is true?
1
The sum of message signal sample with its prediction is quantized
2
The message signal sample is directly quantized and its prediction is not used
3
The difference of message signal sample and a random signal is quantized
4
The difference of message signal sample with its prediction is quantized