Please show all the steps! 10-1) similar to Lathi & Ding, Prob. P.5.2-4A message signal m(t) is normalized to a peak voltage of ±10V. The average message power is 20 mW in a circuitwith 600 2 impedance. To transmit this signal by binary PCM without compression, uniform quantization is adopted.(a) If the SQNR is required to be at least 40 dB, determine the minimum number of bits required from the quantizer.(b) Compute the actual SQNR achieved with the quantizer of part (a).

a)Using the formula for SQNR (in dB) for uniform quantization:SQNRdB=6.02n+1.76 dBSet the SQNR ≥ 40…

Answered: 10-1) similar to Lathi & Ding, Prob.…

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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An analog signal with a bandwidth of 4.2 MHz is to be converted into binary PCM and transmit- ted over a channel. The peak-signal quantizing noise ratio at the receiver output must be at least 55 dB. (a) If we assume that P=0 and that there is no ISI, what will be the word length and the number of quantizing steps needed? (b) What will be the equivalent bit rate? (c) What will be the channel null bandwidth required if rectangular pulse shapes are used?
3. Which of the following is a key characteristic of orthogonal frequency-division multiplexing?A. Amplitude modulationB. Noise performanceC. Digital modulationD. Spectral efficiency
5. What is the type of demodulation we used to demodulate SSB signal (part-A). Explain your answer.
4. This problem addresses the digitization of a television signal using pulse-code modulation. The signal bandwidth is 4.5 MHz. Specifications of the modulator include the following: Sampling: 15% in excess of the Nyquist rate Quantization: uniform with 1024 levels Encoding: binary Determine (a) the Nyquist rate, and (b) the minimum permissible bit rate.
. What are specifications of Digital modulation techniques?
Choose the correct answer low HDOP (Horizontal Dilution of Precision) number such as2 indicates a ........................... a.poor fix b.good fix c.poor signal quality d. good signal quality
Q3) Twenty voice signals are sampled uniformly and then time division multiplexed. The sampling operation uses flat samples with 2 us duration. The multiplexing operation provides for synchronization by adding an extra pulse of 2 us. the highest frequency component of each signal is 3.4 kHz. a. For sampling rate of 8 kHz, calculate spacing between successive pulses of multiplexed signal. b. For Nyquist rate, repeat part a.
Implement the function F(A, B, C) Em(0.1.3.5.6.7) using a 4-way multiplexer Select one: 1
4. Consider the timing diagram below. Assuming that the D and Clock inputs shown are applied to the circuit in Figure 5.10(a) (below at right), draw waveforms for the Qa, Qb, and Qc signals. Assume that each of Qa, Qb, and Qe is initially 1. clock D D Clock DQ Cik Q D ^ D Q 10 o 10 Qa 18 2 Qb Qo Qe
A PCM communication system has 4 codewords: 00, 01, 10, 11; the first two are for positive voltages, the second two are for negative voltages. These are arranged in the way we have become used to seeing them arranged: the larger the binary number the larger the *magnitude* of the signal. The gap between codewords is 1 volt. No codeword gap straddles the 0 volts value. A 1Hz cosine with A=1.5volts is sampled at 2Hz. What is the resulting sequence of codewords?
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Explain the functions of decoders and multiplexers. Then given at least two examples of applications for both of them.

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