Ingeniería informatica Redes Tema 5
1 ASK, PSK, FSK, and QAM are examples of ________ conversion.
2 AM, FM, and PM are examples of ________ conversion.
3 In QAM, both ________ of a carrier frequency are varied.
4 In ________, the amplitude of the carrier signal is varied to create signal elements. Both frequency and phase remain constant.
5 In _________, the frequency of the carrier signal is varied to represent data. Both peak amplitude and phase remain constant.
6 In ________, the phase of the carrier is varied to represent two or more different signal elements. Both peak amplitude and frequency remain constant.
7 Quadrature amplitude modulation (QAM) is a combination of ___________.
8 ________ uses two carriers, one in-phase and the other quadrature.
9 How many carrier frequencies are used in BASK?
10 How many carrier frequencies are used in BFSK?
11 How many carrier frequencies are used in BPSK?
12 Which of the following is not an analog-to-analog conversion?
13 In _____ transmission, the carrier signal is modulated so that its amplitude varies with the changing amplitudes of the modulating signal.
14 In the analog transmission of the digital signal, the baud rate is ___________ the bit rate.
15 In ASK, the bandwidth is ________.
16 With the same signal rate, the bandwidth of FSK is normally ___________ the bandwidth for ASK.
17 The bandwidth of an AM signal is ______________ the bandwidth of the original analog signal.
18 In AM radio, the allocated bandwidth for each station is ___________ kHz.
19 In FM radio, the allocated bandwidth for each station is ___________ kHz.
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