Twelve different message signals, each with a bandwidth of 10 kHz, will be multiplexed and transmitted....
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
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Twelve different message signals, each with a bandwidth of 10
kHz, will be multiplexed and transmitted....
3.8 Twenty-four voice signals are sampled uniformly and then time-division multiplexed n sampling operation uses flat-top...
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....
What is the bandwidth? (10 points) Twenty-four voice signals are to be multiplexed and transmitted over...
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).
b) A signals, m(t), is band-limited to 5 KHz, and , is band-limited to 5 KHz,...
b) A signals, m(t), is band-limited to 5 KHz, and , is band-limited to 5 KHz, and three other signals, m(t), m(t) and mu(t), have a bandwidth of 2.2 KHz. These signals are to be transmitted by means of multiplexing (TDM). nals are to be transmitted by means of time-division Set up a TDM scheme for accomplishing this multiplexing requirement, with each signal sampled at or above its Nyquist rate. If the commutator output is quantized with L=512 levels and...
4) Five audio channels each with a bandwidth of 20 kHz, are sampled at a 10% higher than the Nyqu...
4) Five audio channels each with a bandwidth of 20 kHz, are sampled at a 10% higher than the Nyquist rate and quantized using a 16 bit quantizer. These five channels are then time multiplexed. a. Find the overall bit rate of the output of multiplexer (4 Marks) and b. Find the minimum bandwidth required to transmit the output of the multiplexer when using 16-QAM with a raised cosine filter with a rolloff factor of 0.25 (2 Marks)
4) Five...
3) 10 pts: Four telemetry signals m(t), mz(t), mz(t), m4(t) having bandwidth of 1400, 700, 350,...
3) 10 pts: Four telemetry signals m(t), mz(t), mz(t), m4(t) having bandwidth of 1400, 700, 350, and 350 Hz, respectively, are to be sampled, PAM multiplexed and quantized at L=1024 levels and sent over a single channel as PCM. Show how you will design the PAM multiplexer before the quantizer so that minimum channel bandwidth is used to send the four channels while avoiding aliasing to any signal, and find the value of the minimum channel bandwidth.
7. [20 points] Two signals mi(t) and m2(t) shown in the figure below have to be transmitted simul...
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...
Two signals m1(t) and m2(t), both band-limited to 5000 Hz, are to be transmitted simultaneously over...
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...
10 pts Question 3 A signal has a single-sided bandwidth of W - 90 kHz. If...
10 pts Question 3 A signal has a single-sided bandwidth of W - 90 kHz. If this signal is sampled at the Nyquist rate ( fs - 2W samples/sec) and PAM encoded what is the minimum required bandwidth needed for a channel to transmit this signal?
Determine the transmitted bandwidth for each value of modulation index of three signals using a carrier...
Determine the transmitted bandwidth for each value of modulation index of three signals using a carrier signal of 17khz and a signal of sin(300*2pi)+sin(800*2pi)+sin(2000*2pi)+sin(4000*2pi)
Q1 Marks: 40 A digital communication system has 96 analog telephone signals, each band limited to...
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...
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) A signals, m(t), is band-limited to 5 KHz, and , is band-limited to 5 KHz, and three other signals, m(t), m(t) and mu(t), have a bandwidth of 2.2 KHz. These signals are to be transmitted by means of multiplexing (TDM). nals are to be transmitted by means of time-division Set up a TDM scheme for accomplishing this multiplexing requirement, with each signal sampled at or above its Nyquist rate. If the commutator output is quantized with L=512 levels and...
4) Five audio channels each with a bandwidth of 20 kHz, are sampled at a 10% higher than the Nyquist rate and quantized using a 16 bit quantizer. These five channels are then time multiplexed. a. Find the overall bit rate of the output of multiplexer (4 Marks) and b. Find the minimum bandwidth required to transmit the output of the multiplexer when using 16-QAM with a raised cosine filter with a rolloff factor of 0.25 (2 Marks)
4) Five...
3) 10 pts: Four telemetry signals m(t), mz(t), mz(t), m4(t) having bandwidth of 1400, 700, 350, and 350 Hz, respectively, are to be sampled, PAM multiplexed and quantized at L=1024 levels and sent over a single channel as PCM. Show how you will design the PAM multiplexer before the quantizer so that minimum channel bandwidth is used to send the four channels while avoiding aliasing to any signal, and find the value of the minimum channel bandwidth.
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...
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...
10 pts Question 3 A signal has a single-sided bandwidth of W - 90 kHz. If this signal is sampled at the Nyquist rate ( fs - 2W samples/sec) and PAM encoded what is the minimum required bandwidth needed for a channel to transmit this signal?
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...
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