Assignment No 1 1. Using the layer models in Figure, describe the ordering and delivery of a pizza,...

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Assignment No 1
1. Using the layer models in Figure, describe the ordering and delivery of a pizza, indicating
the interactions at each level.
Figure 1
2. The French and Chinese prime ministers need to come to an agreement by telephone,
ut neither speaks the other’s language. Further, neither has on hand a translator that
can translate to the language of the other. However, both prime ministers have English
translators on their staffs. Draw a diagram similar to Figure 1 to depict the situation, and
describe the interaction and each level.
3. From the following figures, compute the maximum amplitude, frequency, time period
and phase for each of the wave. The x-axis represents the time in sec and y-axis
epresents the amplitude.
4. Compute the amplitude, frequency, time period and phase for each of the following
equations and also draw their respective waveforms.
a. 10???(2?(100)?)
. 20???(2?(30)? + 90)
c. 5???(500?? + 180)
d. 8???(400?? + 270)
5. Suppose that a digitized TV picture is to be transmitted from a source that uses a matrix
of 480× 500 picture elements (pixels), where each pixel can take on one of 32 intensity
values. Assume that 30 pictures are sent per second. (This digital source is roughly
equivalent to
oadcast TV standards that have been adopted.).
a. Find the source rate R (bps).
. Assume that the TV picture is to be transmitted over a channel with 4.5-MHz
andwidth and a 35-dB signal-to-noise ratio. Find the capacity of the channel
(bps).
Hint: Use Shannon’s Criteria.
6. Determine the isotropic free space loss at 4 GHz for the shortest path to a synchronous
satellite from earth (35,863 km).
7. Given a signal as follows, compute the fundamental frequency, spectrum and
andwidth. Also calculate the channel capacity using Nyquest criteria using M= 2, 4, 8,
where M is the number of levels.
?(?) = 5 sin(200??) + sin(600??)
8. Explain how the data rate over a channel can be increased, without increasing the
andwidth? What is the disadvantage of this approach?
Hint: Nyquist Theorem
9. What is the main difference between Packet switching Virtual Circuit and Circuit
Switching? Also discuss the advantages of Packet switching Virtual Circuit over Circuit
Switching.
10. In a LOS communication, consider d = 40km, the requirement is to make two antennas
(transmitter and receiver) such that the height of one antenna should be twice of the
other. Considering this, find the appropriate heights of these two antennas.

wireless-assignment-vkycremn.pdf

Ankit · Accepted Answer

Student Name
Student ID
Title of the assignment
Answer 1: 
“The guest successfully puts in the order with the cook. The host transmits its order to the clerk, and then he submits the request with the cook. For the order to be delivered from host to clerk, the telephone system gives the physical methods. The cook provides the pizza to the clerk with the order form (going about as a "header" to the pizza). The clerk boxes the pizza with the delivery address, and the delivery van encloses all of the orders to be delivered. The road gives the physical path for the order delivery.”
Answer 2: 
Figure 1
As in figure1, it is clear that two PMs are speaking to each other directly. For an instance, French PM when speaks, he is directly addressing his speech to the Chinese PM.

Assignment No 1 1. Using the layer models in Figure, describe the ordering and delivery of a pizza, indicating the interactions at each level. Figure 1 2. The French and Chinese prime ministers need...

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