2.9. For a single sideband Signat with multi-tone modulation, the message signal is m(t) = 5 cost abat) + 3 sin(20.t), a

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2 9 For A Single Sideband Signat With Multi Tone Modulation The Message Signal Is M T 5 Cost Abat 3 Sin 20 T A 1 (31.31 KiB) Viewed 12 times

2 9 For A Single Sideband Signat With Multi Tone Modulation The Message Signal Is M T 5 Cost Abat 3 Sin 20 T A 2 (8.17 KiB) Viewed 12 times

2.9. For a single sideband Signat with multi-tone modulation, the message signal is m(t) = 5 cost abat) + 3 sin(20.t), and the carrier waveform is 4 cos(w.). a) Construct the SS8 modulator block diagram for the upper sideband. b) Develop the time domain expression for the Hilbert transform of message, ie m(t) 10. A signal m(t) - 2 cos(210) frequency modulates (FM) a 1 MHz carrier to produce a (peak) frequency deviation of 4 kHz. Write the time-domain expression for the resulting FM signal Spe(t) What is the value of the frequency deviation constant (FM sensitivity) key? What is the bandwidth of the FM signal? Assume that the amplitude of the FM waveform is 1 volt. Q.11. Consider the modulating waveform m(t) = 2008(6283.18r) which is frequency modulated *s shown in the following figure of magnitude spectrum of FM signal. Determine: a) The modulation index (F) and the magnitude and frequency of carrier waveform b) The time domine expression for the FM signal Sy(t) c) Frequency deviation ratio modulation sensitivity) (ky) and frequency deviation (an d) The bandwidth of modulated FM signal based on: Carson's rule. . FM magnitude spectrum at 99% power bandwidth. 2.2005 I will Die 012 90 94 96 100 102 104 1 t 106 108 110 Q.12. Given the analogue signal X(t) = sin(100xt) + cas (200st). Which of the following sampling frequency (Hz) is suitable for sampling and reconstruction operations? a) 100 b) 200 c) 300 di 400
Q.13. If a signal having frequency components 0-10 Hz is sampled at 10 Hz. Then the resultant is: a) Highly aliased signal b) 20 Hz. c) 6 Hz. d) None.