Principle of Communications

Homework 3, Due 12/22

Problem 1

Amplitude modulation

FourierT.m

Page90AM.mdl

Page 90

Find two different frequencies of sinusoids, and two values of Ka that the carrier phase reverses.

 

Problem 2

DSB-SC

Page94DSB_SC.mdl

Use sine, square, and sawtooth sources and record 10 spectrum values.

 

Problem 3

DSB-SC demodulation

Page95DSB_SC_Demod.mdl

Compare the source and the demodulation result.  Are they similar?

 

Problem 4

FM

Page109FM.mdl     

Use sine, square, and sawtooth sources and record 10 spectrum values.

 

Problem 5

Problem 2.2

Page166P2_2.mdl

Change the transfer functions three times and report the results.

 

Problem 6

Problem 2.5

Page167P2_5.mdl

Change the transfer functions three times and report the results.

 

ftp your homework to

ftp://stud@140.127.208.113

in the directory communication\HW3

by the following format:

檔案名稱:hw#_學號.zip

例如:資工同學,作業2

   檔案名稱:hw3_a09355xx.zip

注意:檔名不能有中文

The password is given in class.