review answer pt.2

What is the bandwidth required to transmit at a rate of 10 Mbps in the presence of a 28-bd S/N ratio?

• 1.075 MHz

• 10 MHz

• 5 MHz

• 10.5 MHz

The slope of the analog signal is greater than the delta modulator can maintain

• overload distortion

• granular noise

• slope overload

• peak limiting

A carrier recovery is needed with

• FSK

• BPSK

• DPSK

• QAM

Pulse – amplitude modulation signals are multiplexed by using

• Subcarrier

• Bandpass filters

• A/D converters

• FET switches

The biggest disadvantage of PCM is

• its inability to handle analog signals

• the high error rate which is quantizing noise introduces

• its incompatibility with TDM

• the large bandwidths that are required for it

Mark and space refer respectively to

• dot and dash

• message and interval

• binary 1 and binary 0

• on and off

Pulse width modulation may be generated

• by differentiating pulse position modulation

• with a monostable multivibrator

• by integrating the signal

• with a free running multivibrator

A transmission of binary data which involves the transmission of two non – zero voltage level

• Unipolar

• Polar

• Bipolar

• Non – return to zero

Part of the PCM system that prevents aliasing or foldover distortion

• Bandpass filter

• Anti – foldover distortion

• Anti – aliasing

• Any of these

It is defined as the process of transforming messages or signals in accordance with a definite set of rules.

• Quantizing

• Sampling

• Coding

• Decoding