6.01 Lecture Notes - Lecture 17: Block Diagram, Negative Number, Adequate Equivalence Relation

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rosi10agarwal

4 Apr 2023

School

MIT

Department

Electrical Engineering and Computer Science

Course

6.01

Professor

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Document Summary

177 then using a di erence equation, we can compute individual values of the output signal y: y[n] = x[n] x[n 1] y[0] = x[0] x[ 1] = 1 0 = 1 y[1] = x[1] x[0] = 0 1 = 1 y[2] = x[2] x[1] = 0 0 = 0 y[3] = x[3] x[2] = 0 0 = 0 x[n] = [n] y[n] Another way of describing a system is by drawing a block diagram, which is made up of components, connected by lines with arrows on them. The lines represent signals; all lines that are connected to one another (not going through a round, triangular, or circular component) represent the same signal. There are three primitive components corresponding to our operations on signals: delay components are drawn as rectangles, labeled delay, with two lines connected to them, one with an arrow coming in and one going out.

Related Questions

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

Which of the following system components is the brain of a computer?

(A) Circuit board

(B) CPU

(D) Network card

alizy

6.01 Lecture Notes - Lecture 17: Block Diagram, Negative Number, Adequate Equivalence Relation

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