fom [Q1] An analog signal with a bandwidth of 4.2kHz is to be converted into binary PCM and transmitted over a channel. The peak signal to quantization ratio at the receiver output must be at least 45DR will h

fom [Q1] An analog signal with a bandwidth of 4.2kHz is to be converted into binary PCM and transmitted over a channel. The peak signal to quantization ratio at the receiver output must be at least 45DR will h

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

ChapterS: Safety, Basic Electricity And Ohm's Law

Section: Chapter Questions

Problem 8RQ: What is an MSDS?

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Concept explainers

Amplitude modulation

A radio signal can carry information in the form of sound or image for broadcasting or communication. For it to be sent to a greater distance, the signal must be changed or modulated in some way. One of the easiest way is to change the amplitude of the signal with variations of the video or the audio signal. This is called Amplitude Modulaton. In this modulation information of message is carried in amplitude of carrier signal.

Question

fom
[Q1] An analog signal with a bandwidth of 4.2kHz is to be converted into binary PCM and transmitted
over a channel. The peak signal to quantization ratio at the receiver output must be at least 45dB. What
7.
will be the output bit rate?

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The information in an analog signal voltage waveform is to be transmitted over a PCM system with an accuracy of : 0.1 % of the peak-to-peak analog signal. The analog voltage waveform has a bandwidth of 43 Hz and an amplitude range of - 10 to 10 Vots. Determine the minimum bit rate fin bps) required in the PCM system? O a 688 O 774 O c 387 O d 86 Oe 258
Q2/ The information in an analog signal voltage waveform is to be transmitted over a PCM system with an accuracy of ±0.1% (full scale). The analog voltage waveform has a bandwidth of 100 Hz and an amplitude range of -10 to +10 volts. Find the minimum sampling rate required. i) ii) Find minimum bit rate required in the PCM signal. Find the number of bits in each PCM word. iii) iv) Find the minimum absolute channel bandwidth required for the transmission of the PCM signal.
H.w do H.W: Compute the binary code word values for the amplitudes 0.4 V and 0.78 V, then compute the quantization error for each. Suppose you have a 2bit ADC (PCM) modulator with 0 to 1 volt amplitude signal as shown below: 1 V OUANTI7ATION LEVELS.
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3. Some GPS receivers use 1 bit ADCS (Analog-to-digital Converters) to sample and quantize the signal i.e. the output of the ADC is simply 2 quantization levels: -1 or +1. This is typically done to save on power. (a) What is the quantization SNR? How does it compare to typical thermal noise SNR of a GPS signal before correlating with the CDMA code? (b) Justify, how come it is possible to sample the signal using a single bit and still get good performance.
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