ANALOG AND DIGITAL COMMUNICATION
An analog communication system is to be designed for transmission of human voice when the available
bandwidth is 10 kHz. You are required to choose one or more analog modulation schemes that could be
used under given circumstances. Justify your choice(s) in terms of bandwidth, impact of noise,
transmitter efficiency, ease of deployment and audio quality of received signal.
Homework Answers
Request Answer!
We need at least 9 more requests to produce the answer.
1 / 10 have requested this problem solution
The more requests, the faster the answer.
Answer all parts and show all steps please. 3323 Modern Digital and Analog Communication Question A...
Answer all parts and show all steps please.
3323 Modern Digital and Analog Communication Question A compact disc (CD) records audio signals digitally by using PCM. Assume that the audio signal bandwidth equals 15 kHz (a) If signal is sampled at the Nyquist rate and the samples are uniformly digitized into L 65,536 levels and then binary-coded, determine the number of bits required to encode a sample (b) If the audio signal has average power of 0.1 W and a...
A communication system operates in the presence of white noise with a two-sided power spectral density...
A communication system operates in the presence of white noise with a two-sided power spectral density Sn(w)=10^-14 W/Hz and with a path loss of 20 dB. Calculate the minimum required bandwidth and the minimum required power of the transmitter for a 10 kHz sinusoidal input and a 40 dB output signal to noise ratio if the modulation is a) DSB-SC b) SSB-SC c) FM with Af = 10 kHz
Communication System Solve with ALL steps Please QUESTION 3 Briefly explain the following Analog Pulse Modulation...
Communication System
Solve with ALL steps Please
QUESTION 3 Briefly explain the following Analog Pulse Modulation (APM): (i) Pulse Amplitude Modulation (PAM) Pulse Width Modulation (PWM) (iii) Pulse Position Modulation (PPM) (2 marks) (2 marks) (2 marks) b) There are several digital modulations techniques used to modulate digital signal. For a binary data 10111011, sketch the output waveform if the following modulator is used: Amplitude Shift Keying (ASK) (2 marks) Frequency Shift Keying(FSK) (2 marks) (iii) Phase Shift Keying (PSK)...
a b c d b. What is the output noise power, PSy Uaj.p A certain communication...
a b c d
b. What is the output noise power, PSy Uaj.p A certain communication channel is characterized by K noise with power-spectral density of S) 10-10 w The message signal that is to be 3. 10-9 attenuation and additive white transmitted through this channel is m (t) # 50 Cos (10000?), and the carrier signal that will be used in each ofthe following modulation schemes is c(t) = 100 Cos (40000m). n(t) 20 m(t) x() Channel wit (0...
Communication system 7- What is the main function of the analog front end (why it is needed and what does it do)? 8- What are the main channel effects? 9- What is the reason for exitance of noise and...
Communication system
7- What is the main function of the analog front end (why it is needed and what does it do)? 8- What are the main channel effects? 9- What is the reason for exitance of noise and where exactly it happens physically in the system? 10- Draw a block diagram that represents the channel effect. 11- Write an the expression of the received signal, y(t), given that the transmitted signal is x(t), the channel effect is h(t) and...
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...
Question 4: a) Given the following received signal z vAS b+w where w is the white...
Question 4: a) Given the following received signal z vAS b+w where w is the white zero-mean Gaussian noise with variance of σ,a No/2 and b is the data symbol (b E {-1, + 1). Assume that No 0.5 and that the two symbols +1 are equally likely. Assuming that the maximum likelihood (ML) decision rule is used, determine Eb to achieve the bit error probability of P 0.01 (the Q-function table is given at the end of this examination...
An analog to digital converter is to be designed for a digital communication system. In this...
An analog to digital converter is to be designed for a digital communication system. In this converter, the output of the sampler varies between +3V and -3V. a. Design a uniform quantizer with minimum peak signal power to average quantization noise power ratio equal to 28 dB. Draw a complete diagram of the quantizer clearly showing quantile interval and quantization levels. Show each design step in detail. Accuracy up to 4 decimal places is required. b. Using the quantizer designed...
a. Describe TWO (2) advantages and TWO (2) disadvantages of digital transmission. (CO1: PO1 - 4...
a. Describe TWO (2) advantages and TWO (2) disadvantages of digital transmission. (CO1: PO1 - 4 marks) b. Sampling, quantization and coding are the three processes used to represent an analog signal in digital form. Considering an input signal into an 8-bit Pulse Code Modulation (PCM) system is a 20 Vp-p 50-Hz, answer the followings: i. Using appropriate diagram briefly describe TWO (2) basic methods to perform the sampling function. (CO2: PO2 - 2 marks) Determine the number of quantization...
Answer all parts and show all steps please.
3323 Modern Digital and Analog Communication Question A compact disc (CD) records audio signals digitally by using PCM. Assume that the audio signal bandwidth equals 15 kHz (a) If signal is sampled at the Nyquist rate and the samples are uniformly digitized into L 65,536 levels and then binary-coded, determine the number of bits required to encode a sample (b) If the audio signal has average power of 0.1 W and a...
A communication system operates in the presence of white noise with a two-sided power spectral density Sn(w)=10^-14 W/Hz and with a path loss of 20 dB. Calculate the minimum required bandwidth and the minimum required power of the transmitter for a 10 kHz sinusoidal input and a 40 dB output signal to noise ratio if the modulation is a) DSB-SC b) SSB-SC c) FM with Af = 10 kHz
Communication System
Solve with ALL steps Please
QUESTION 3 Briefly explain the following Analog Pulse Modulation (APM): (i) Pulse Amplitude Modulation (PAM) Pulse Width Modulation (PWM) (iii) Pulse Position Modulation (PPM) (2 marks) (2 marks) (2 marks) b) There are several digital modulations techniques used to modulate digital signal. For a binary data 10111011, sketch the output waveform if the following modulator is used: Amplitude Shift Keying (ASK) (2 marks) Frequency Shift Keying(FSK) (2 marks) (iii) Phase Shift Keying (PSK)...
a b c d
b. What is the output noise power, PSy Uaj.p A certain communication channel is characterized by K noise with power-spectral density of S) 10-10 w The message signal that is to be 3. 10-9 attenuation and additive white transmitted through this channel is m (t) # 50 Cos (10000?), and the carrier signal that will be used in each ofthe following modulation schemes is c(t) = 100 Cos (40000m). n(t) 20 m(t) x() Channel wit (0...
Communication system
7- What is the main function of the analog front end (why it is needed and what does it do)? 8- What are the main channel effects? 9- What is the reason for exitance of noise and where exactly it happens physically in the system? 10- Draw a block diagram that represents the channel effect. 11- Write an the expression of the received signal, y(t), given that the transmitted signal is x(t), the channel effect is h(t) and...
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...
Question 4: a) Given the following received signal z vAS b+w where w is the white zero-mean Gaussian noise with variance of σ,a No/2 and b is the data symbol (b E {-1, + 1). Assume that No 0.5 and that the two symbols +1 are equally likely. Assuming that the maximum likelihood (ML) decision rule is used, determine Eb to achieve the bit error probability of P 0.01 (the Q-function table is given at the end of this examination...
a. Describe TWO (2) advantages and TWO (2) disadvantages of digital transmission. (CO1: PO1 - 4 marks) b. Sampling, quantization and coding are the three processes used to represent an analog signal in digital form. Considering an input signal into an 8-bit Pulse Code Modulation (PCM) system is a 20 Vp-p 50-Hz, answer the followings: i. Using appropriate diagram briefly describe TWO (2) basic methods to perform the sampling function. (CO2: PO2 - 2 marks) Determine the number of quantization...
Most questions answered within 3 hours.
-
Costing Models You work for XYZ trucking and your boss has asked
you to figure out...
asked 44 seconds ago -
International ethics focus on:
1) exploitation of labor
2)corruption
3) environmental impact
4) none of the...
asked 7 minutes ago -
A 24.6 g sample of brass is heated in a flask to 125°C in
boiling water...
asked 9 minutes ago -
1. When balancing the equation H2SO4 (aq) + NaOH (aq) →
Na2SO4(aq) + H2O(aq), would you...
asked 16 minutes ago -
Which drug candidates are most effective at docking with COX1
and COX2 respectively?
COX1: flurbiprofen, COX2:...
asked 22 minutes ago -
You place the left end of the rod on a fulcrum, and hang the
right end...
asked 23 minutes ago -
Push an object with half the mass of the cabinet with a force of
200 N....
asked 29 minutes ago -
Differentiate the application and functions of
electronic medical records, electronic health records and
electronic personal health...
asked 30 minutes ago -
What is the height of the tsunami in a water depth of 10 m
assuming the...
asked 41 minutes ago -
A χ2 goodness-of-fit test was used to test the hypothesis that
students at a local university...
asked 44 minutes ago -
Problem 1
You have a loan outstanding. It requires making three annual
payments at the end...
asked 46 minutes ago -
A database imposes several requirements on the structure of
tables. Which of the following is not...
asked 46 minutes ago