PHYSICAL LAYER AND TRANSMISSION MEDIA
INTRODUCTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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the frequency of the analog carrier signal is varied proportional to the digital information signal.
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ASK
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PSK
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FSK
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MSK
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Explanation:
Detailed explanation-1: -(b) Frequency Shift Keying (FSK) changes the frequency of the carrier signal to represent the digital signal. (c) Phase Shift Keying (PSK) changes the phase of the carrier signal to represent the digital signal.
Detailed explanation-2: -Frequency modulation (FM) In frequency modulation, the frequency rather than the amplitude of the carrier wave is made to vary in proportion to the varying amplitude of the modulating signal, as shown in Fig. 9.19d.
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