ExampleTen VoiceSignals each bandlimited to 3KHZ are tobe FDMed with IkHz quardbands betweenchannels. TheSubarrier modulation is Bwith fI=0.aCalaılate the required baseband bandwidih.and theSubcorrier frequencies.b-Sketch theGrier modulation is AM wilth fc=40KHZ, Whatis theionisspectrum oE the Hansmited Signal if the finaltransmission bandwiidth?

We will find out bandwidth for SSB and we will draw spectrum for AM.

Example Ten Voice Signals.cach bondlimited_to3KHz are to be FDMed with IKH2 Subanrier modulation is ŠSBwith fa=. aCalaılate the required baseband bandwidih ond the Sabcorrier frequencies. b-Sketch thespectrum.of the Hansmitted Signal if the final Grier modulation is AM wilth fc=40KH2,whatis the transmission bandwidth? guardbands.between channels Tthe

Example Ten Voice Signals.cach bondlimited_to3KHz are to be FDMed with IKH2 Subanrier modulation is ŠSBwith fa=. aCalaılate the required baseband bandwidih ond the Sabcorrier frequencies. b-Sketch thespectrum.of the Hansmitted Signal if the final Grier modulation is AM wilth fc=40KH2,whatis the transmission bandwidth? guardbands.between channels Tthe

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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Problem 2: Based on the figure below, which represents the spectrum of a DSB-LC signal, find the following. 2n -1200 -1100 -1000 -900 -800 800 900 1000 1100 1200 (d) Calculate the average power for both the carrier (P) and side bands (P,). (e) Find the modulation efficiency (µ)
A carrier is modulated simultaneously by two baseband signals . For one signal, the modulation index is 0.3 and the overall modulation index is 0.5. What will be the modulation index for the other baseband signal?
C. Phase reversal D. Modulator's sensitivity factor 39. In linear modulation, the intelligent signal is conveyed in A. The amplitude of the transmitted signal BA The sideband components of the transmitted wave C. The phase deviation modulated signal D. None of the above | 40. What communication technique or modulation scheme make use of channel noise as an added advantage? A. Asynchronous shift key modulation B. Vestigial sideband modulation C. Spread-spectrum D.4 Wideband Frequency modulation |41. Narrowband FM and AM share a lot of similarities except that , A+ The lower side frequencies are 180° out of phase. B. The upper side frequencies are 180° out of phase. C. The sideband frequencies are 180° out of phase. D. None of the above | 42. Modulation is done in , A. Transmitter B. Radio receiver C. Between transmitter and radio receiver D. None of the above |43. At 100 % modulation, the power in each sidebands is, A 50 % В. 40 % С. 60 % D 25 % | 44. In a TV transmission, picture is…
a.Find carrier peak amplitude (vc), carrier frequency (fc), message peak amplitude (vm), messagefrequency (fm) and modulation index (m). b.Write the equation of the VAM (t) in time domain. c.Sketch spectrum of the modulated transmitted AM signal and find the Bandwidth of theTransmitted AM signal d.
In a pulse code modulated system, a quantizer is used with 128 uniform levels. If 120 kHz is the maximum frequenxy of the baseband signal, then what will be the minimum transmission bandwidth?
24/ b
23
Part B only
For single sideband (SSB) modulation d) Explain with drawing the demodulation process of SSB signal.e) How many single sideband (SSB) stations can be accommodated in a 180 KHz bandwidth if the highest modulating signal frequency fmax is 9 KHz?f) What are the main advantages and disadvantages of single sideband (SSB) modulation compared with ordinary amplitude modulation (AM).
B-Twenty speech signal each bandlimited to 4 kHz are FDM/SSB multiplexed, then RF modulated by a main carrier using AM modulator. Draw the block diagram and find the minimum bandwidth of multiplexing and final transmission bandwidth.