CSCC-2 Study Guide - Midterm Guide: Photon, Wind Wave, Transverse Wave

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amatongtrisia05

27 Mar 2023

School

University of Science and Technology of Southern Philippines

Department

Engineering

Course

CSCC-2

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Document Summary

We realize that wave is related to the switch of power. There are many sorts of waves studied in. Some waves want a cloth medium to propagate, and a few do now no longer want a medium for propagation. In this session, allow us to research in element approximately waves and the kinds of waves. A wave transmits records or power from one factor to any other withinside the shape of signals, however no fabric item makes this journey. The frequency of a wave is received with the aid of using consisting of a thing of time withinside the mix. We are absolutely depending on waves for all of our wi-fi communications. The telecellsmartphone converts your voice into an electrical sign which then propagates both via copper wires or thru antennae in wi-fi conversation. A wave is a glide or switch of power withinside the shape of oscillation thru a medium area or mass.

Related Questions

Q3.
1. State the 3 Major Types of signal distortions. And state the frequency domain conditions for
each.
2. State the time domain condition for distotionless transmission.
3. A transmitter send a signal x(t)=A sin(2πfot + ϴ).The channel is the distortion less.
Propagation delay is г to reach to the receiver. Sketch the transmit and receive signals.
Verify the condition for distotionless transmission.
4. A 3000 km repeater system consists of m identical fibber-optic cable sections with
Attenuation 0.5 dB/km and m identical amplifiers. Find the required number of sections
and the gain per amplifier so that Pout = Pin = 5 mW and the input power to each amplifier
is at least 67 pW.

liyanage.chamindu

Q1. Consider a VLC (Visual Light Communication) system. In which LED is used as a Transmitter to send
the information and PD (Photo Detector) is used as a Receiver to decode the signal. Suppose you insert
a slowly varying information signal V(t) that is a voltage signal to the LED, which produces a time
varying light signal P(t). If the light signal is propagated through an ideal channel with no noise, it
produce a voltage signal at the PD VPD(t)= 3.5sin(20t + π/2).
1. Draw the important block diagram of the communication system.
2. Sketch or Label the IP/OP signals in the diagram.
3. Draw VPD(t)
4. Suppose that channel has an ambient light (Noise) which generated by another light source.
That noise is generated 1V DC voltage at the PD.It is a Noise and additive to the desired
signal.
Draw the block diagram of the new communication systems and Sketch or Label the IP/OP
signals in the diagram.
5. Draw VPD(t) with the additive noise.
6. Propose a method to eliminate this ambient light noise.

liyanage.chamindu

Consider a VLC (Visual Light Communication) system. In which LED is used as a Transmitter to send
the information and PD (Photo Detector) is used as a Receiver to decode the signal. Suppose you insert
a slowly varying information signal V(t) that is a voltage signal to the LED, which produces a time
varying light signal P(t). If the light signal is propagated through an ideal channel with no noise, it
produce a voltage signal at the PD VPD(t)= 3.5sin(20t + π/2).
1. Draw the important block diagram of the communication system.
2. Sketch or Label the IP/OP signals in the diagram.
3. Draw VPD(t)
4. Suppose that channel has an ambient light (Noise) which generated by another light source.
That noise is generated 1V DC voltage at the PD.It is a Noise and additive to the desired
signal.
Draw the block diagram of the new communication systems and Sketch or Label the IP/OP
signals in the diagram.
5. Draw VPD(t) with the additive noise.
6. Propose a method to eliminate this ambient light noise.

liyanage.chamindu

CSCC-2 Study Guide - Midterm Guide: Photon, Wind Wave, Transverse Wave

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