Digital Communication : UNIT-2

The process of approximating the continuous set of values with a finite set of values is called _________ .

• Modulation

• Quantization

• Sampling

• Approximation

Select the correct order of blocks in PCM transmitter.

• Encoder, Quantizer, Sampler, Low pass filter.

• Low pass filter, Sampler, Quantizer, Encoder.

• Low pass filter, Quantizer, Sampler, Encoder.

• Low pass filter, Encoder, Sampler, Quantizer.

PCM Transmitter doesn't consist this block.

• Low pass filter

• Sampler

• Amplifier

• Encoder

The difference between the actual analog value and approximated discrete value due to the rounding is called __________

• quantization error

• normal error

• reading error

• sampling error

Quantization noise ____________ the SNR of a signal.

• reduces

• increases

Each quantized sample is assigned the binary code that represents the discrete amplitude value closest to the pulse's actual value. This is known as ________

• Quantization

• Sampling

• Encoding

• Decoding

The task of a Regenerative repeater is .....

• Equalization

• Timing

• Decision making

• All of these.

The process of compensating for the effects of amplitude and phase distortion produced by the channel is _______.

• Timing

• Equalization

• Decision making

• None of these

The process of assigning time instants when the probability of making of a wrong decision is minimum is called _______ .

• error

• Equalization

• Timing

• sampling

The process which regenerates the PCM wave is ____

• Decision making

• Timing

• Decoding

• Equalization