4 Assume that the SIR required for satisfactory voice performance on the forward channel of a cellular system is 18 dB, andthe path loss exponent y = 4. Suppose that a total of 32 MHz of bandwidth is allocated to the system and each duplexchannel has a bandwidth of 50kHZ. What is the system capacity (the maximum number of channels per cell) when 120°sectored antennas are used?Select one:а. 150O b. 91О с. 71O d. None of the above is correct.

we need to determine the maximum number of channels per cell.

Answered: Assume that the SIR required for…

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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A satellite at an altitude of 37654 km transmits a signal of 17 GHz to a ground station directly below it. The following data is given. • Total atmospheric losses = 40dB • Transmit antenna gain = 55dBi • Receiver antenna gain = 60dBi • Signal to noise ratio of received signal = 6dB • Receiver signal noise power = 25pW • Receiver sensitivity = -90dBW I. Calculate the power transmitted. II. Find the Fade Margin for the link and comment on your result.
Which of the following should be selected for the minimum carrier frequency in order to transmit an information signal with frequency components of 3 KHz, 5 KHz and 7 KHz with amplitude modulation?a) 14MHzb) 6KHzc) 10KHzd) 14KHze) 10MHz
If the message signal has a bandwidth of 15 kHz, and the carrier frequency is 1 MHz, the bandwidth of VSB-AM is between 5 and 15 kHz. :Select one True False
Q. No 2. The A.M transmission is used for long distance and video communication instead of F.M. why? Also analyze the effect of noise and environmental conditions (i.e. moister, temperature and geographical terrain) on both modulation schemes and elaborate which modulation scheme will be more affected by noise and environmental conditions? (Your answer should be technical and to the point).
Using the Hilbert Method, 1) Find (by equations) expressions for Single Side Band - Suppressed Carrier (SSB-SC) modulation of a single-tone information signal m(t) = 5 cos(wmt). Assume that the carrier signal is c(t) = sin(wet). 2) Sketch the frequency representation of the LSB modulated signal, showing the phase angle of each tone. 3) Draw a block diagram of a suitable demodulator for the SSB-SC signal. For any used block, specify the operating frequencies and the amplification gain.
0.2 0.19 0.18 0.17 0.16 0.15 0.14 0.13 0.12 400 500 600 700 800 900 Frequency (MHz) A 700 MHZ tv signal is propagating in a coaxial cable which has the attnuation charactrestics shown above. The transmitted signal has 3 Watt power and the length of the cable is 3 km. calculate SNR at the reciever if the noise voltage is 3 micro volt? Attenuati on (dB/m)
A typical satellite communication system consists of an earth station transmitter, a satellite transponder and an earth station receiver. Use appropriate parameters and equations to describe the complete uplink and downlink design for a satellite communication link. Provide an example of the link calculation for Ku- band (use any frequency in the Ku-band). Use appropriate diagrams to illustrate the link. Quote all your references.
The A.M transmission is used for long distance and video communication instead of F.M. Why? Also analyze the effect of noise and environmental conditions (i.e.moister, temperature and geographical terrain) on both modulation schemes and elaborate which modulation schemes will be more effect by noise and environmental conditions? (your answer should be technical and to the point). Subject is Communication system
The A.M transmission is used for long distance and video communication instead of F.M. why? Also analyze the effect of noise and environmental conditions (i.e. moister, temperature and geographical terrain) on both modulation schemes and elaborate which modulation scheme will be more affected by noise and environmental conditions? (Your answer should be technical and to the point).
This question is about Frequency Modulation (FM) and the Phase-Locked Loop (PLL). suppose a FM signal, 20sin(2à × 9 × 107t + 5sin1.2à × 10ªt) is applied to a 50-Q antenna. Determine: i) The carrier frequency. ii) The transmitted power. iii) Modulation index mf. iv) Intelligence frequency fi. v) BW (using Carsons rule)
Problem 6. Text Problem 2.3 (revised). Suppose for a certain FM system the demodulated SNR is 34 dB with a receiver threshold of 16 dB. The baseband signal has a 5 kHz bandwidth. The noise density level is No -110 dBW/Hz. =- a. Determine the FM index, 3. b. What RF bandwidth is needed for transmission for this system. c. Find the required received carrier power level.
Limiter circuits are used for clipping the amplitude of the carrier signals in FM transmissions. True False

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