Q2): consider a 3 kHz band limited voice signal sampled at 8000 sample/sec to betransmitted over a channel. The input variés from -3.8v to +3.8v and has averagepower of 30 mW. The required signal to quantization ratio is 20 dB.a. Determine the PCM data rate if a 32 synchronization bits are inserted every224 data bits.b. Determine the minimum required transmission bandwidth if 20 PCM codersare time multiplexcd.c. Determine the RMS value of quantization noise.

Answered: Image /qna-images/answer/0cc932e4-11f1-4f8f-aff9-bdf5bed3f5da.jpg

Answered: Q2): consider a 3 kHz band limited…

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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12-21. For a 16-QAM modulator with input bit rate fb = 10 Mbps and carrier frequency fc = 60 MHz, calculate the minimum bilateral Nyquist rate and baud rate. Tracea schematic of the output spectrum
12-19. For an 8-PSK modulator with input bit rate fb 10 Mbps and carrier frequency fc 80 MHz, calculate the minimum Nyquist bandwidth and baud rate. trace aoutput spectrum schematic
A CDMA system delivers message to N = 40 users with equal power. The message is transmitted at a rate of 10 kbps, using a DS spread spectrum signal operating at a chip rate of 2MHz. a. What is a bit period?b. What is a chip period?c. What is the processing gain of the system?
3/ A Digital Analog Converter of 12 Bits of Precision is available A/ Determine the signal to the system's peak noise ratio B/ If the signal is sampled at 44 kHz. What is the bits rate generated by the system? C/ Determine the required bandwidth if I wanted to transmit this data with a modulator 16-QAM.
Q4. a) Consider a bandlimited message signal of 6kHz bandwidth. It is sampled at the rate of 55% higher than the Nyquist rate. The maximum quantization error of the sample amplitude is 0.5% of the peak amplitude? . Assume binary encoding. Calculate the minimum bandwidth ? of the channel to transmit the encoded binary signal.
Output data ratio of a 8-bit PCM-TDM system sampling 24 voice channels, comparing these using μ -law at the rate of 8 kHz and with a I frame alignment word, is ?
Assume the channel bandwidth is 3100 Hz and the maximum data rate is 35 kb/s. To improve the maximum data rate by 60%, how many times should the signal-to-noise-rate (SNR) increase? Based on the improved maximum data rate and SNR, if the SNR further increases by 10 times, can the maximum data rate further increase by 20%?
Assume that a voice channel occupies a bandwidth of 4 kHz. We need to combine three voice channels into a link with a bandwidth of 12 kHz, from 20 to 32 kHz. Show the configuration, using the frequency domain. Assume there are no guard bands in computer communication and network?
Consider a speech signal with spectral components limited to the frequency band 200 to 3500 Hz. Assume that the sampling rate of 12000 samples/s will be used to generate a PCM signal. The ratio of peak signal power to average quantization noise power (?) ?? needs to be minimum of 40 dB. i) What is the minimum number of uniform quantization levels needed? ii) What is the minimum number of bits required per sample? at the output iii) Calculate the bandwidth of this system required for the detection of such PCM signal.
For a CD audio system, the analog signal is digitized such that the signal to quantization ratio is maintained at least 96dB. The sampling is performed at 44100Hz. a) What is the minimum number of quantization levels required to attain the given signal to quantization noise ratio?b) How many bits per sample are required when levels are identified in part a)?c) Identify the data rate in bits/s for the system.
Fora standard SSBSC carrier AM, the peak unmodulated carrier peak voltage is 10 V for a load resistance of 10 ohms and modulation index of 1. What will be the total transmitted power?
A data of 240 kbps is to be transmitted over a channel of 5 kHz bandwidth. The transmission should be free from the ISI problem. What should be the minimum value of the SNR (in dB unit) if the channel is noisy?

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