Assignment-1_MM (1)

For an FM signal, the maximum frequency of the modulating signal is 100 kHz and the frequency deviation is 10 kHz. Find out the bandwidth of the FM modulated waveform.

6) In digital frequency meter, Schmitt trigger converts input signal into a ............ wave, which has a fast rise and fall time.

In this part of the presentation can you give me a narrow explanation of these:

The integer number given by the ratio of the frequency of a harmonic to the fundamental frequency is known as order of filter. True False

‏In case of the amplitude modulation of an information signal A)the modulated signal has a single frequency which is the carrier frequency . B)the modulated signal has three components with the frequencies fc , fc + fm and fc - fm C). the modulated signal has a single frequency which is fm . D)none of the other answers is correct

Transmitter: a carrier frequency of 108 kHz and a modulating frequency of 3.4 kHz is plied to an amplitude modulator. The USB and the LSB are both transmitted to the distant eceiver, with a suppressed carrier. Receiver: the resultant USB and LSB from the transmitter are input to an amplitude demodulator. A carrier frequency of 108 kHz is reintroduced to the demodulator. Determine the following: 1. The LSB and USB at the output of the modulator. 2. The LSB and USB at the output of the demodulator.

Consider the following plots of time-domain and frequency-domain signals. Label the axes of the five plots. For example, plot B should be labeled as amplitude vs. time. Characterize each plot as either a time-domain or a frequency-domain signal. Describe the mathematical relationships among the plots. For example, how could you arrive at plot A from plots D and E?

Please concisely indicate your reasoning and show all relevant work.

For the signal flow graph of the given figure consider the following statements: 1. It has three forward paths. 2. It has three individual loops. 3.lt has two non touching loops. out of above the correct statements are * X2 X3 O 1,3 O 1, 2, 3 O 1,2 O 2, 3

What is the period and frequency of this signal? Is the frequency constant?What is the bit rate of a given signal?What is the baud rate of a given signal?

ASAP

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Solve all Q2: Fill in the blanks for the following 1- The main steps of communication system are 2- The Armstrong's method convert the 3- The main step of FM system is............ to.. ...........and Q3: a) Compare in details with aid of figures and equations between the Frequency Modulation (FM) and and Phase Modulation (PM) systems.

(i)Electrical pulses can be varied to represent characteristics of an analog voice signal.Propose ONE (1) pulse modulation scheme to represent the voice digitalization signal.Defend why your proposal is the best and support your answer by illustrating theelectrical pulses waveform to represent an analog voice signal. (ii)Phase Shift Keying (PSK) demonstrates better performance than Frequency ShiftKeying (FSK). State your argument and draw a comparison waveform to illustrate theexamples of both shift keying method.

Transmitter: a carrier frequency of 108 kHz and a modulating frequency of 0.3 kHz to 3.4 kHz is applied to an amplitude modulator. The USB and the LSB are both transmitted to the distant receiver, with a suppressed carrier. Receiver: the resultant USB and LSB from the transmitter are input to an amplitude demodulator. A carrier frequency of 108 kHz is reintroduced to the demodulator. Determine the following: 1. The LSB and USB at the output of the modulator. 2. The LSB and USB at the output of the demodulator.

A voice message of 2 kHz is sampled at DM system for a rate nine times the Nyquest rate. The maximum signal amplitude is unity to avoid slop over load. Assuming the input signal amplitude is uniformly distributed in the range .of (-1,1) determine SNR SNR=148.1 SNR=190.2 SNR=180.3 SNR=140.5 SNR=160.4 SNR=160.5 SNR=150.9

The subject is Communication Systems ( FREQUENCY MODULATION (FM) AND DEMODULATION ) Please send the answer by typing i don't want any handretten.   Q 01) What are the applications of FM? Define frequency deviation in FM? What are the advantages of FM over AM?

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3. Analog data contains frequencies from 30 MHz to 70 MHz. We wish to convert this to adigital signal using Pulse Code Modulation. What is the minimum sampling rate?

The spectrum of a signal to be sampled is shown below. What is the approximate minimum sampling frequency needed to avoid aliasing? P(t) Freq, kHz 1 3. 4 10

I need the answer as soon as possible

What is Frequency Modulation? Draw the waveforms.

2. If the signal is 5 sin 200n t i. suppose the signal is sampled at rate of fs=300HZ, what is the discrete time signal obtained after sampling. ii. Find minimum frequency sampling to avoid aliasing. iii. Sketch the discrete time signal.

9. What is the purpose of companding?a. it is used to protect the lower frequency signals from noise b. it is used to protect the higher frequency signals from noisec. it is used to protect the higher amplitude signals from noised. it is used to protect the lower amplitude signals from noise 10. What is the solution for granular noise in Delta Modulation PCM?a. increase the step-size b. decrease the step-sizec. increase the input signal d. decrease the input signal

A signal is bandlimited to 4 KHz and a PCM is used to transmit it. The signal to quantization noise is  atleast 40 dB and is normalised. What is the number of levels where the signal is encoded and what is the transmission's bandwidth?

Information: (2 Vp-p 50 Hz + 2 Vp-p 100 Hz) sine wave Carrier: 4 Vp-p 1000 Hz sine wave What properties do it show that a modulated signal is a DSBSC signal?|

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