4.2-8 Two signals m| (1) and m2(t), both band-limited to 5000 Hz, are to be transmitted simultaneouslyover a channel by the multipłexing scheme shown in Fig. P4.2-8. The signal at pointb is themultiplexed signal, which now modulates a carrier of frequency 20,000 Hz. The modulatedsignal at point c is transmitted over a channel.(a) Sketch signal spectra at points a, b, and c.(b) What must be the bandwidth of the channel?(c) Design a receiver to recover signals m1(t) and m2(1) from the modulated signal atpoint c.M{(f)|m (1)-50005000 f-Σm2{t)-50002 cos 40,000t50002 cos 20,000rt

Answered: Image /qna-images/answer/fca3f948-816e-4cca-80a3-b4e28f242e4d.jpg

4.2-8 Two signals m (t) and m2(1), both band-limited to 5000 Hz, are to be transmitted simulta over a channel by the multiplexing scheme shown in Fig. P4.2-8. The signal at point b is the multiplexed signal, which now modulates a carrier of frequency 20,000 Hz. The modulated signai at point c is transmitted over a channel. (a) Sketch signal spectra at points a, b, and c. (b) What must be the bandwidth of the channel? (c) Design a receiver to recover signals m1 (t) and m2(1) from the modulated signal at point c. m(1) -5000 To 5000 f- Σ m2(t) -5000 5000 f 2 cos 40,000 2 cos 20,000rt

4.2-8 Two signals m (t) and m2(1), both band-limited to 5000 Hz, are to be transmitted simulta over a channel by the multiplexing scheme shown in Fig. P4.2-8. The signal at point b is the multiplexed signal, which now modulates a carrier of frequency 20,000 Hz. The modulated signai at point c is transmitted over a channel. (a) Sketch signal spectra at points a, b, and c. (b) What must be the bandwidth of the channel? (c) Design a receiver to recover signals m1 (t) and m2(1) from the modulated signal at point c. m(1) -5000 To 5000 f- Σ m2(t) -5000 5000 f 2 cos 40,000 2 cos 20,000rt

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

Question-5) A signal with a bandwidth of 10 MHz is first passed through a low filter with a cut-off frequency of 7 MHz. Then the signal is sampled using the minimum sampling frequency required and each sample is coded with 10 bits. Since the minimum signal-to-noise ratio is used to make the efficiency of this communication channel 3 bit /s /Hz, how many MHz should the bandwidth of the channel that this signal can transmit be at least?(Note: Enter 2 digits after the comma. The correct answer within ±5% of the correct answer will be accepted as the correct answer.)
Question-1) A signal with a bandwidth of 14 MHz is first passed through a low filter with a cut-off frequency of S MHz. Then the signal is sampled using the minimum sampling frequency required and each sample is coded with 8 bits. Since the minimum signal to noise ratio is used to make the efficiency of this communication channel 4 bit /s /Hz, how many MHz should the bandwidth of the channel that this signal can transmit be at least? NOTE: If the information in the text and the photo is different, please solve the question using the information given in the photo. Help me please... Thank you so much.
Problem 4: a. For a Communications system with capacity of 400 kbps and SNR = 35DB and a lower frequency of 0.25 kHz find the Upper frequency? b. What is the channel capacity for signal power of 250 W, noise power of 50 W, and bandwidth of 3 MHz? c. What is the channel capacity when the S'N ratio is doubled but the bandwidth is reduced by a factor of 5?
Q4: A) The upper and lower side bands that appear when the signal vm=3sin(6600t)is modulated by the carrier signal vc=Vsin(1200000rt) are
14.a. While conducting an OTDR trace, you find that the signal strength drops by 0.091 dB over an 82 m section of fiber. What's the attenuation in this fiber?A. 0.80 dB/kmB. 7.46 dB/kmC. 0.91 dB/kmD. 1.11 dB/km14.b. Which component converts an optical signal into an electrical signal in a transceiver?A. LEDB. EDFAC. Optical modemD. Photodiode
Explain the concept of bandwidth and how it relates to the capacity of a transmission medium, considering both analog and digital signals.
0.5 -6 -2 4. 6. time in seconds What, signal is plotted above? O Type here to search %23 76°F A OE O 0 deete home backspack 80 QWE R
A receiving antenna picks up 50 micro volts of signal. The transmitting antenna switches to a nearby antenna which has a 5 dB gain over the original antenna. How much of the new signal is picked up by the receiving station? Show the calculation in detail.
How could I get the thevnin voltage from this using the transfer funciton and the lookback method?
please solve all parts surely gives u 4 likes need detailed and typed ans
Coomunication system
You did 4 scans of a sample with an FTIR and averaged to 4 scans to result in a signal-to-noise ratio of 4.3. If you want to increase the S/N ratio to 40, how many scans needs to be taken and averaged? (The answer should be an integer without any decimal point.) Type your numeric answer and submit