Problem 2: The two baseband signals m1(t) and m2(t) are to be transmitted simultaneously over a channel by multiplexing scheme shown in the next page. Sketch signal spectra at each indicated point, and what value of the carrier and filter H specification required to modulate m2(t) so that it is next to the spectrum of the signal at point R (upper or lower).

Problem 2: The two baseband signals m1(t) and m2(t) are to be transmitted simultaneously over a channel by multiplexing scheme shown in the next page. Sketch signal spectra at each indicated point, and what value of the carrier and filter H specification required to modulate m2(t) so that it is next to the spectrum of the signal at point R (upper or lower).

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...

See similar textbooks

Similar questions

i)Modulation process takes place in the modulator with two injection signals namely data orinformation and carrier. It is a vital step in generating a decent signal for electronic communication.Whenever the carrier is modulated by the information signal, new signals at different frequenciesare generated as part of the process. These new frequencies occur in the frequency spectrum withinthe range of the carrier frequency. Conclude these frequencies and mathematically explain itsgeneration with the help of diagrams. A) Upper sideband and lower broadbandB) Lower sidefloor and upperside floorC) Lower peak and upper peakD) Upper sideband and lower sidebandE) Lower bandwidth and upper gainF) All of the aboveG) None of the above
Q2: A modulating signal is used to modulate a carrier signal(AM modulation). Let Pr . Pc. PSB. PuSB. PLSB and u are the total power, carrier power, side band power, upper side band power, lower side band power and modulation index respectively. Prove the following: a. Pc = Pr () c. Pusn = Pisn =) Pr m2 b. Psn = Pr %3D 2+m2 LSB 2+m? (2+m2
The baseband signal modulates a 98 kHz carrier sine wave. Using frequency and amplitude labelling similar to that in Figure 2, sketch the spectrum of the modulated signal using a template, similar to that in Figure 3, for the following modulations: AM with the amplitude of the carrier wave being 20 V DSBSC SSB – the lower sideband SSB – the upper sideband
1. a. For a baseband signal m(t) = cos wmt = cos 2n fmt, Find the DSB-SC signal and sketch its spectrum. Identify the USB and LSB. b. For each of the baseband signal: (i) sketch the spectrum m(t). (ii) sketch the spectrum of the DSB-SC signal m(t)cos 10,000rnt, (ii) Identify the USB and LSB. (i) т() = cos 1000xt; (ii) m(t) (iii) m(t) = cos 10007I cos 30007 {, с. You are asked to design a DSB-SC modulator to generate a modulated signal km(t) cos (wei+0), where m(t) is a signal band-limited to B Hz. Figure P4.2-4 shows a DSB-SC modulator available in the stock room. The carrier generator avaitable generates not cos wet, but cos³ wct. Explain whether you would be able to generate the desired signal using only this equipment. You may use any kind of filter you like. (a) What kind of filter is required in Fig. P4.2-3? (b) Determine the signal spectra at points b and c, and indicate the frequency bands occupied by these spectra. km(1) cos at MS) Filter cos ca (a)
Q2. For the scheme shown in Figure Q2, L Draw the spectrum of the baseband signal (multiplexer output) for the multiplexer. il. Determine the bandwidth of the baseband signal (multiplexer output) for the multiplexer. Determine the minimum transmission bandwidth of the multiplexer. Explain, briefly, the modification needed for the multiplexer in the figure to achieve this bandwidth. il. cos 10,000xt Hascband signal cos 24,000t cos 2000mt con 32,000et Figure Q2
Can any help ...
B- Draw the modulation and demodulation block diagram of AM-VSB. C- If m(t)-Am cos(wmt) v, find and sketch the spectrum of AM-DSB signal.
Q2. For the scheme shown in Figure Q2, i. Draw the spectrum of the baseband signal (multiplexer output) for the multiplexer. ii. Determine the bandwidth of the baseband signal (multiplexer output) for the multiplexer. i. Determine the minimum transmission bandwidth of the multiplexer. Explain, briefly, the modification needed for the multiplexer in the figure to achieve this bandwidth. 4 kHz cos 10,000xt Basebund signal cos 24,000mt cos 2000mt cos 32,000nt Figure Q2
Q2. For the scheme shown in Figure Q2, i. Draw the spectrum of the baseband signal (multiplexer output) for the multiplexer. ii. Determine the bandwidth of the baseband signal (multiplexer output) for the multiplexer. iii. Determine the minimum transmission bandwidth of the multiplexer. Explain, briefly, the modification needed for the multiplexer in the figure to achieve this bandwidth. 3 kHz cos 10,000nt Bascband signal cos? 1000nt Σ cos 22,000rt 4 kHz cos 36,000nt Figure Q2
Question 2 (a) Briefly explain the advantage of the following Amplitude Modulation (AM) type and state ONE (1) application for each AM type: i. Double Sideband Full Carrier (DSBFC) ii. Double Sideband Suppressed Carrier (DSBSC) iii. Single Sideband (SSB). (b) The AM waveform for the modulated signal is illustrated in Figure 1. i. Calculate the percentage of modulation index, m. ii. State the type of the modulated signal. Justify the answer. iii. Write the equation for the modulated signal. iv. Calculate the percentage of power efficiency. 3V -1IV Figure 1
We have a baseband channel with a 1-MHz bandwidth. What is the data ratefor this channel if we use each of the following line coding schemes? a. NRZ-L b. Manchester c. MLT-3 d. 2B1Q
When does maximum frequency deviation occur in an FM signal? -It occurs during the transition of the modulating signal to the opposite sign. -It occurs at the maximum amplitude point of the modulating signal. -It occurs during the maximum rate of change of the modulating signal. -It occurs at the mean point of the modulating signal.