What is the bandwidth? (10 points) Twenty-four voice signals are to be multiplexed and transmitted over twisted pair. What is the bandwidth required (in bps) if synchronous time division multiplexing is used, if we use the standard analog to digital sampling rate, and if each sample is converted into an 8-bit value? (Suppose, each voice channel has a bandwidth of 4000 Hz).
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What is the bandwidth? (10 points) Twenty-four voice signals are to be multiplexed and transmitted over...
3.8 Twenty-four voice signals are sampled uniformly and then time-division multiplexed n sampling operation uses flat-top samples with 1 us duration. The multiplexing oper includes provision for synchronization by adding an extra pulse of sufficient ampli and also 1 us duration. The highest frequency component of each voice signal is 3.4 (a) Assuming a sampling rate of 8 kHz, calculate the spacing between successive pule of the multiplexed signal. (b) Repeat your calculation assuming the use of Nyquist rate sampling....
(b). Twenty-four voice signals are sampled uniformly and then time-division multiplexed. The sampling operation uses flat-top samples with lus duration. The multiplexing operation includes provision for synchronization by adding an extra pulse of sufficient amplitude and also 1 us duration. The highest frequency component of each voice signal is 3.4 kHz. (b.1) Assuming a sampling rate of 8 kHz, determine the spacing between successive pulses of the multiplexed signal. (b.2) Repeat your calculation assuming the use of Nyquist rate sampling.
Two signals m1(t) and m2(t), both band-limited to 5000 Hz, are to be transmitted simultaneously over a channel by the multiplexing scheme shown in the following figure.The signal at point b is the multiplexed signal, which now modulates a carrier of frequency 20,000 Hz. The modulated signal at point c is transmitted over a channel. 4. [20 points] Two signals m(t) and m-(t), both band-limited to 5000 Hz, are to be transmitted simultaneously over a channel by the multiplexing scheme...
Data communication Qs A signal has a bandwidth frequency of 150 Hz and the highest frequency is 170 Hz. What is the lowest frequency of the signal? (just put the whole number. No decimal values. No units next to the number) A periodic signal completes one cycle in 0.04 second. What is the frequency? A sine wave completes 7200 cycles in one hour. What are its frequency and period? I: 50 Hz, II: 10 Hz, 0.1 seconds I: 25 Hz,...
Twelve different message signals, each with a bandwidth of 10 kHz, will be multiplexed and transmitted. Determine the minimum bandwidth required for each of the following methods: a-) FDM b) SSB C) TDM D) PAM
Q1 Marks: 40 A digital communication system has 96 analog telephone signals, each band limited to 4 kHz. The telephone signals are converted to digital binary data using Pulse Code Modulator (PCM) system, which use a uniform quantiser followed by an 8-bit encoder. The system uses two bits for synchronization. The digital binary data are then time-division multiplexed and transmitted over a single communication channel. Analyse the communication system by considering the following principles: (i) Determine the number of quantization...
7. [20 points] Two signals mi(t) and m2(t) shown in the figure below have to be transmitted simul taneously over a channel by multiplexing. The signal at point b is the multiplexed signal, which modulates a carrier of frequency 20 kHz. The modulated signal at point c is then transmitted over the channel. (a) Sketch the spectra of the signals at points a, b and e An Mar) 42 2 cos(20, 000mt) (b) What must be the bandwidth of the...
What is the relationship between a signal’s spectrum and its bandwidth? What is attenuation? Compare and contrast DTE with DeE. What are the components of the DTE and DCE? What are the different categories of modulation to change digital signals to analog signals? Define channel capacity and what key factors affect channel capacity. What distinguishes Frequency Division Multiplexing (FDM)? Time Division Multiplexing (TDM)? Statistical Time Division Multiplexing (STDM)? Wavelength Division Multiplexing (WDM)? Why is multiplexing so cost-effective?
The information in an analog signal voltage waveform is to be transmitted over a PCM system with an accuracy of 0.1 % full scale accuracy . The analog voltage waveform has a bandwidth of 100 Hz and an amplitude range of-10 to10 Volts. (a) Determine the minimum sampling rate required (b) Determine the number of bits in each PCM word. (c) Determine the minimum bit rate required in the PCM system. (d) Determine the minimum absolute channel bandwidth required for...
Exit Exam: Data Communications and Computer Networks (CSCI 3150) The layer of the OSI model makes sure the data received at the very end of a transmission is exactly the same as the data originally transmitted. a. application c. transport d. network access b. session between some 62. are represented as continuous waveforms that can be at an infinite number of points given minimum and maximum. a. Analog signals c. Digital data d. Digital pulses b. Digital signals 63. The...