Sinusoidal carrier signals may be modulated with information to be communicated, by influencing:Question 2Answerthe carrier frequencythe carrier phaseboth phase and amplitude togetherthe carrier amplitude
Question
Sinusoidal carrier signals may be modulated with information to be communicated, by influencing:Question 2Answerthe carrier frequencythe carrier phaseboth phase and amplitude togetherthe carrier amplitude
Solution
The question seems to be asking about the ways in which sinusoidal carrier signals can be modulated to communicate information. Here are the possible answers:
-
The carrier frequency: This refers to frequency modulation (FM), where the frequency of the carrier signal is varied in accordance with the information signal.
-
The carrier phase: This refers to phase modulation (PM), where the phase of the carrier signal is varied in accordance with the information signal.
-
Both phase and amplitude together: This refers to quadrature amplitude modulation (QAM), where both the phase and the amplitude of the carrier signal are varied in accordance with the information signal.
-
The carrier amplitude: This refers to amplitude modulation (AM), where the amplitude of the carrier signal is varied in accordance with the information signal.
So, all the options given can be ways to modulate a sinusoidal carrier signal.
Similar Questions
In PM the information is transmitted using _______ .*2 pointsChange in frequencyChange in amplitudeChange in phase of the carrierNone of the above
In ________, the phase of the carrier is varied to represent two or more different signal elements. Both peak amplitude and frequency remain constant.Select one:PSKQAMASKFSK
Quadrature modulation allows us to increase the transmission rate on a modulated carrier by:Question 2Select one:independently modulating two carriers of the same frequency but different amplitudesreducing pulse widthincreasing SNRindependently modulating two carriers of the same frequency but orthogonal in phaseusing twice the frequency range
In Frequency Modulation
A carrier wave of frequency 100 MHz is frequency-modulated by a sinusoidal wave ofamplitude 20 V and frequency 100 kHz. The frequency sensitivity of the modulator is 25kHz/V.(a) Determine the approximate bandwidth of the FM wave, using Carson’s rule.(b) Determine the bandwidth obtained by transmitting only those side-frequencieswith amplitudes that exceed one percent of the unmodulated carrier amplitude.
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.