Two baseband signals m₁ (t) and m₂ (t) are to be transmitted simultaneously over a channel by multiplexing scheme shown below. (a) Sketch signal spectra at points Q, R, S, T, U, V and Y. (b) Design a system to recover signals m, (t) and m₂ (t) back from the modulated signal. M₁(f) m -B 0 B M₂(f) M -B 0 B m(t) B 846 m₂(t) 0 3B S HPF fx=B Hz LPF f=3B Hz R 2B- T U V 10B HPF f-10 B TY

Two baseband signals m₁ (t) and m₂ (t) are to be transmitted simultaneously over a channel by multiplexing scheme shown below. (a) Sketch signal spectra at points Q, R, S, T, U, V and Y. (b) Design a system to recover signals m, (t) and m₂ (t) back from the modulated signal. M₁(f) m -B 0 B M₂(f) M -B 0 B m(t) B 846 m₂(t) 0 3B S HPF fx=B Hz LPF f=3B Hz R 2B- T U V 10B HPF f-10 B TY

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

Write the equations for ØAM(1), ØFM(t) and ØPM(1), if the modulating signal is; f(1) = 2cos300ti + 4cos600ni
The figure shows multiple modulation schemes for the signal that is given by the dashed line sinusoidal function, the X-axis is the time axis is seconds and the Y-axis is the amplitude. Answer the following: What is the quantization noise in a modulator that uses a 4-bits register for the analog to digital conversion of the given sinusoidal signal? Please give deatiled solution for good understanding
1. The evaluation of 8(t - 1)8(t - 2)dt is 2. A sinusoidal modulated signal has its Atmax =50 and the minimum is half of it, so the efficiency of modulation will be.. .........
this is about signal convolution (LTI ). i need to know how to solve the problen step by step please..
The message signal m(t) into a FM modulator with the parameter kf=25 is shown in the following figure.a) Express the FM signal in time domain.b) Calculate and plot the frequency deviation in Hz.c) Calculate and plot the phase deviation in radians.
then second questrion po eh eto 2. Determine the over-all transmittance of the signal flow graph shown below.
(pulses, impulses, sines 1. Any signal can be expressed as the sum of possibly infinite, series of and cosines, square waves). 2. The pilot carrier is an extra signal added to a modulated AM signal, to achieve (asynchronous, synchronous, an efficient, reliable). 3. The signal is said to be non-periodic, deterministic, energy). - modulation. if it could be expressed mathematically as a function of time. (periodic, 4. The convolution of a function with an impulse function delayed to an instant 3 in time results in (an advance in the function by 3 units in time, the function itself, a delay in the function by 3 units in time, cannot be determined). 5. What is the upper sideband frequency if the carrier frequency and the modulating signal frequency is 30 kHz and 80 Hz respectively? (3000 Hz, 30.08 kHz, 3080 kHz, 30.8 Hz). 6. Which of the following is an advantage of SSB over DSB? (No change in spectrum space, Reduce in spectrum space, Carrier is suppressed, Power is not wasted on the…
zain IQ AM Modulatio... -> AM Modulation 1. What is the main feature in AM modulation, that is used to judge if the modulation is good or not? Explain with examples. 2. Can AM modulated signal change phase and/or frequency? Explain the reason. 3. What is modulation index? Its formula? 4. Plot an AM modulated signal, that has an information signal m(t) = 10 sin(10nt) and a carrier signal c(t) = 15 cos(1000t). Calculate the modulation index (u). Is it a good modulation? If no, suggest a change in one of the signals above and calculate u again, so that it approaches ideal case. 5. Draw the modulation block diagram of AM. ...
Discuss how the circuit produces a Frequency Modulated Signal
Depanment of Electronics Engineering IX. A carrier signal is amplitude modulated by a sinewave. The resulting AM waveform Is shown below. zed 6V 2.5V a) What is the percentage of modulation? b) What is the amplitude of the carrier signal? c) To achieve 75 percent modulation, what amplitude of the modulating signal is needed? d) Calculate the effective voltage of the AM signal SSA AILE Q + Page 4 I 5 X. The frequency spectrum of an AM signal is shown betow: (9 pts)
• Discussion: 1. Define modulation. 2. Explain why modulation is necessary or desirable. 3. Define: a) The circuit that causes one signal to modulate another, and give the names of the two signals applied to this circuit. b) What is the name given to the new signals generated by the modulation process. 4. Are these statements true or false. Explain your answer a) The carrier frequency is usually lower than the modulating frequency. b) The carrier frequency remains constant during AM. c) The carrier of an AM signal contains information. 5. Explain why the modulation is linear in amplitude modulation system. 6. Explain the reason for making the modulation index (m) less than unity in DSB_LC modulation. 7. What percentage of the total power in an AM signal is in the carrier, one sideband, and both sidebands. 8. Write the trigonometric expression for a sine wave carrier signal.
According to the figure below determine the following 1. What is the name of this type of modulation - 2. Determine the modulation index 3. Determine the amplitude of carrier and the amplitude of information signals 4. Write down the mathematical form of the signal assume the carrier frequency 10 MHz and information frequency 1 KHz. 5. If we want change the modulation index to be 1, how would your answer to parts three & four change? Amplitude 1.5 0.5 -0.5