Q4: a) which of the following analogue modulation scheme requires the minimum transmittedpower and minimum channel band -width:a-VSB b-DSB-SC c-SSB d-AMb) A 4 GHz carrier is DSB-SC modulated by a low pass message signal with maximumfrequency of 2 MHz . the resultant signal is to be ideally sampled. The minimum frequency isa- 4MH b- 8MHZ c- 8 GHz d- 8.004GHZ

a) The correct option is c (SSB).

Answered: Q4: a) which of the following analogue…

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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6. It is difficult to use the simple AGC system available on the ANACOM 1/2 board withan SSB transmission because:a the AGC circuit requires both sidebands to be present to control the receiver gain.b the AGC system requires the incoming signal to contain a carrier component.c the frequency is too high and the AGC system cannot make the receiver gain respond fastenough.d the BFO produces a constant level of output signal.
For a 4000 Hz bandwidth channel has a capacity of 40 kbps. The signal to noise ratio of the channel is ?
Select all the statements that provide a correct relationship among modulation parameters: a. The amplitude of the recovered message decreases as the message frequency is increased. b. To improve signal demodulation, we can try increasing the message amplitude. c. To improve signal demodulation, we can try increasing the carrier amplitude. d. Modulation index is preferred to be minimized. e. Modulation index is preferred to be maximized. f. Using two diodes in series will improve the rectification process. g. Using two diodes in parallel will improve the rectification process. h. In actual implementation, there are more parameters to consider in order to ensure accurate message recovery.
q16)This multiple choice question from DIGITAL COMMUNICATIONS course.just write for me the final answer. A baseband system has a signal-to-noise ratio of 23 dB and a bandwidth to bit rate ratio of 0.4 .The average bit energy to noise spectral density of this system is equal to------- a)none of the mentioned b)125 c)250 d)80
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
Explain the relative merits of high- and low-level modulation schemes. Please DO NOT copy from the book. Write the explanation by yourself.
a. An AM transmitter has the unmodulated carrier power of 20kW and can be modulated to a maximum of 70% before the system saturates/overloads. Find the value to which carrier power can be increased if 40% modulation limit is imposed.b. An analog communication system using FM has the highest modulating frequency of 5 kHz and maximum deviation of 25 kHz. Calculate the bandwidth of modulated signal using Carson’s rule. Compare this value with the one obtained using the simple formula. For practical systems which of these values should be used?
P4/ Calculate the approximate bandwidth (in Hz) for the modulated signal of an FM modulator whose message signal, m (t), is a 4 V and 20 Hz test tone. The deviation constant of Modulator frequency is 25 Hz/V.
Verification of Sampling Theorem Solution please
The channel capacity of a telephone line noiseless channel is 100 kbps with bandwidth (B-3 kHz). Find the following: --The value of M of the M-ary digital modulator -The new value of M that is needed to double the channel capacity. -The value of S/N ratio if the telephone line is considered as noisy channel.
Q24)This multiple choice question from DIGITAL COMMUNICATIONS course.just write for me the final answer. The choice of the number of bits per PCM word depends on the a. SNR b. Bandwidth c. None of the mentioned d. SNR and bandwidth
The Channel Coding Theorem

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