Any help is appreciated 1. Signals can exist in the time domain or the frequency

Question

Any help is appreciated

1. Signals can exist in the time domain or the frequency domain, but not both. Modulation is a linear process.

2. Modulation is a linear process. T/F

3. All modulated signals in a wireless system are transmitted via T/F

digital transmission carrier

analog transmission carrier

phase coherent bypass carrier

carrier pigeon

none of the above

4. Carson's rule is an approximation for ______________ signal bandwidth

amplitude modulation (AM)

phase modulation (PM)

frequency modulation (FM)

quadrature amplitude modulation (QAM)

none of the above

QUESTION 6

Information capacity represents the number of independent symbols that can be carried through a system in a given unit of time T/F

QUESTION 7

What is the Nyquist equation that identifies the maximum allowable data rate with multilevel digital signaling?

QUESTION 8

rate refers to the rate of change of a digital signal?

QUESTION 9

rate refers to the rate of change of a signal on the transmission medium after encoding and modulation?

QUESTION 10

Quadrature Amplitude Modulation (QAM) is a form of digital modulation where the information is contained in both the amplitude and the phase of the transmitted carrier. T/F  

QUESTION 11

What is carrier recovery?

QUESTION 12

Which carrier recovery method has the fastest acquisition time of the three methods?

Squaring Loop

Costas Loop

Remodulator

All are the same

QUESTION 13 T/F

P(e) and BER are often used interchangeably because they both have the exact same meaning.

QUESTION 14 T/F

Error rates on a wireless link can be high, resulting in a large number of retransmissions.

QUESTION 15

Error rate is ____ proportional to Eb/No?

digital transmission carrier

analog transmission carrier

phase coherent bypass carrier

carrier pigeon

none of the above

Explanation / Answer

1

2.Modulation is a linear process.Ans:False

Explanation:Modulation is a non-linear processthat generates additional frequencies. This is a non-linear process, where the amplitude of the signal is modulatedby another signal.

3.C) Analog Transmission carrier.

4.C)Frequency Modulation

6.True

7.The Nyquist Theorem, also known as the sampling theorem, is a principle that engineers follow in the digitization of analog signals. For analog-to-digital conversion (ADC) to result in a faithful reproduction of the signal, slices, called samples, of the analog waveform must be taken frequently. The number of samples per second is called the sampling rate or sampling frequency.

8

9.

10.True

11.what is a carrier recovery?

  A carrier recovery system is a circuit used to estimate and compensate for frequency and phase differences between a received signal's carrierwave and the receiver's local oscillator for the purpose of coherent demodulation.

12.Squaring Loop

13.True

14.T rue

15.Inversely Proportional

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.