Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN: 9780133923605
Author: Robert L. Boylestad
Publisher: PEARSON
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Chapter 25, Problem 19P
Sketch the waveform for ic for Problem 18,
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4. A differential BPSK transmitter consumes 10 W and provides a BER of 1*10^-7. If the system moves
to 16-QAM, what is new minimum transmit power?
5. The noise power (in watts) measured in a 40MHz Wifi channel is 230*10^-6 Watts. The access point
(AP) output power is 600 mW and only uses 256QAM and has a data rate of 400Mbps. The channel
losses can be modeled as 0.4dB/meter. An application on your phone requires a BER of < than 1*10^-4.
A) What is the maximum distance between the AP and your phone?
b) if the AP and my phone could switch to 64QAM and support the same data rate, what is the new
maximum distance between the AP and my phone?
3. You are to design a 9-volt battery operated communication system that has a center frequency of 2.4
GHz. It must last 10 years without replacing batteries. The application requires a BER of <10^-5 and a
data rate of 500bps. The channel can be modeled as AWGN with a noise power spectral density of 10^-
8 W/Hz. (a) What modulation scheme would you use? B) what is the required capacity of the batteries?
and (c) Is the battery commercially available?
Chapter 25 Solutions
Introductory Circuit Analysis (13th Edition)
Ch. 25 - Determine the following for the pulse waveforms of...Ch. 25 - Prob. 2PCh. 25 - Prob. 3PCh. 25 - Prob. 4PCh. 25 - Sketch a pulse waveform that has a base-line...Ch. 25 - Prob. 6PCh. 25 - Prob. 7PCh. 25 - Prob. 8PCh. 25 - Prob. 9PCh. 25 - Prob. 10P
Ch. 25 - Prob. 11PCh. 25 - Prob. 12PCh. 25 - Prob. 13PCh. 25 - Prob. 14PCh. 25 - Prob. 15PCh. 25 - The capacitor in Fig. 25.57 is initially charged...Ch. 25 - For the input voltag Uc appearing in Fig. 25.58,...Ch. 25 - The switch in Fig. 25.59 is in position 1 until...Ch. 25 - Sketch the waveform for ic for Problem 18,Ch. 25 - Sketch the voltage Uc for the network in Fig....Ch. 25 - Sketch the current ic for each frequency in...Ch. 25 - Prob. 22PCh. 25 - Prob. 23PCh. 25 - Prob. 24PCh. 25 - Prob. 25PCh. 25 - Prob. 26PCh. 25 - Prob. 27PCh. 25 - Prob. 28PCh. 25 - Prob. 29PCh. 25 - Place a capacitor in parallel with Rp in Fig....
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