b) Given a binary Phase Shift Keying (PSK) system in which the allocated bandwidth is 25×C kHz. Assume the transmitted signals s(t) has a sinusoidal carrier of amplitude a = 5 mV. The signal, through transmission, is subjected to an Additive White Gaussian Noise (AWGN) channel of power spectral density No/2 = 10-1 W/Hz. For such a system, it is required to calculate the attainable bit error rate, Pe, to have a reliable system. c=5

b) Given a binary Phase Shift Keying (PSK) system in which the allocated bandwidth is 25×C kHz. Assume the transmitted signals s(t) has a sinusoidal carrier of amplitude a = 5 mV. The signal, through transmission, is subjected to an Additive White Gaussian Noise (AWGN) channel of power spectral density No/2 = 10-1 W/Hz. For such a system, it is required to calculate the attainable bit error rate, Pe, to have a reliable system. c=5

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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Consider a mobile system at 900 MHz carrier frequency, and with 25-kHz bandwidth, that is affected by thermal noise (noise temp Te = 300k). Antenna gains of Tx and Rx sides are 8dB and -2dB respectively. Cable loss at Tx is 2dB. The noise figure at Rx is 7dB. The required operating SNR is 18dB and desired range of coverage is 2km. The break point is at 10dB up to which the path loss is given by [ ] , beyond that point the path loss exponent is 3.8, and the fading margin is 10dB. What is the minimum Tx power required?
c) i) Consider a noisy continuous communication channel of bandwidth B = 1 MHz, which is perturbed by additive white Gaussian noise whose total spectral power is N0B = 1 W. Continuous signals are transmitted across such a channel, with average transmitted power S = 1,023 W. Give a numerical estimate for the channel capacity, in bits per second, of this noisy channel.
Consider a communication link with a geostationary satellite such that transmitter receiver separation is 30,000 km. Assume the same transmitter and receiver. If a 100-mili-watt transmitter at 4 GHz is used with transmitting and receiving antennas of 0.5-m2 effective area, what is the received power level in dBm? What implications does this power level have on the receiver design? With a land-mobile satellite terminal, the typical antenna gain is 10 dB or less. What does this imply about the data rates that may be supported by such a link?
A cellular service provider decides to use a digital TDMA scheme which can tolerate a signal- to-interference ratio of 15 dB in the worst case. Find the optimal value of N for(a) omnidirectional antennas, (b) 120° sectoring, and (c) 60° sectoring. Should sectoring beused? If so, which case (60° or 120°) should be used? (Assume a path loss exponent of n=4and consider trunking efficiency.)
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In a certain cell of a cellular mobile communication system, the serving base station is located 4 Km from the mobile station. The base station and the mobile station antennas have gains of Gt=30 and Gr=20, respectively. The transmitted power from the base station is 100W with carrier frequency of 910 MHz. Assume free space propagation model, the received signal power in dB at the mobile station is approximately -56 dB -62 dB -36 dB -76 dB
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