Login

Create Account
Customer Service Chat
+14156709189
info@expertsmind.com
Submit Homework/Assignment
Get quote & make Payment
Get Solution
singal system , MATLAB Programming
Q.1: Consider the transmission of a sinusoid x(t) = cos(2f0t) through a channel aected
by multipath and Doppler. Let there be two paths, and assume the sinusoid is being sent
from a moving transmitter so that a Doppler frequency shift occurs. Let the received signal
be
r(t) = 0cos(2(f0 ?? v)(t ?? L0=c)) + 1cos(2(f0 ?? v)(t ?? L1=c))
where 0 i 1 are attenuations, Li are the distances from the transmitter to the receiver
that the signal travels in the ith path i = 1,2, c = 3 108 m/sec, and the frequency shift
v is caused by the Doppler eect.
(a) Let f0 = 2 KHz, v = 50 Hz, 0 =1, 1 = 0.9 and L0 = 10,000 meters. What would
be L1 if the two sinusoids have a phase dierence of =2 ?
(b) Is the received signal r(t), with the parameters given above but L1 = 10,000, periodic?
If so, what would be its period and how much does it dier from the period of the
original sinusoid? If x(t) is the input and r(t) the output of the transmission channel,
considered a system, is it linear and time invariant? Explain.
(c) Sample the signals x(t) and r(t) using a sampling frequency Fs = 10 KHz. Plot the
sampled sent x(nTs) and received r(nTs) signals for n = 0 to 2000.
(d) Consider the situation where f0 = 2 KHz, but the parameters of the paths are random,
trying to simulate real situations where these parameters are unpredictable, although
somewhat related. Let
r(t) = 0cos(2(f0 ?? v)(t ?? L0=c)) + 1cos(2(f0 ?? v)(t ?? L1=c))
where v = 50 HZ, L0 = 1,000, L1 = 10,000, 0 = 1  , 1 = 0/10 and is a
random number between 0 and 1 with equal probability of being any of these values
1
(this can be realized by using the rand MATLAB function). Generate the received
signal for 10 dierent events, use Fs = 10,000 Hz as the sampling rate, and plot them
together to observe the eects of the multipath and Doppler.
Posted Date: 11/25/2012 5:44:27 AM  Location : USA
Ask an Expert
Related Discussions:
singal system , Assignment Help, Ask Question on singal system , Get Answer, Expert's Help, singal system Discussions
Write discussion on singal system
Your posts are moderated
Write your message here..
Related Questions
Wavelet use in imabe processing, why we use wavelet in image processing ?
why we use wavelet in image processing ?
Ifelse statement, The IFELSE Statement: The if statement selects whe...
The IFELSE Statement: The if statement selects whether an action is executed or not. Selecting between the two actions, or selecting from numerous actions, is accomplished by
Gray level, Calculate the gray level value for all the pixels, Computer Gra...
Calculate the gray level value for all the pixels, Computer Graphics An 8x8 image f[i,j] has gray levels given by the following equation: f [i , j]= ? ij ? ; i,j=0,1,2,3,4,5,6,7.
Implement the physat algorithm, Your task is to implement the PHYSAT algor...
Your task is to implement the PHYSAT algorithm in Matlab to classify the phytoplankton species in the data you have selected. An algorithm demonstrating one solution is provided b
Generate a matlab error with a descriptive error message, Write a function ...
Write a function called threshold2 (in a file called 'threshold2.m'). The function takes an arbitrary number of input variables. The first input variable, t, is required and is the
Hiding text in image steganography, i want help in coding part...
i want help in coding part...
Pre dicting and plotting., You will need to implement at least two Matlab...
You will need to implement at least two Matlab functions: HW3main.m and svmTrain.m. The implementation details are as follows: function [alpha] = svmTrain(X,T,kernel,C,sigma) %
Documentation  script, Documentation: It is very important that all t...
Documentation: It is very important that all the scripts be documented well, so that the people can understand what the script does and how it accomplishes that. One way of do
Find the spectrum of waveform, (a) Find the spectrum of this waveform: x =...
(a) Find the spectrum of this waveform: x = [ exp( [0:1:49]/10), exp([50:1:1]/10)]. Subplot only the magnitude by using the spectrum program from the class notes. (b) Using
Development modeling, i have a project in matlab : modeling of development ...
i have a project in matlab : modeling of development of an outer organ (hand,leg and head) i don''t know how to do it, my teacher said me, i have to make it easy, so, it means i s
Assignment Help
Accounting Assignment Help
Economics Assignment Help
Finance Assignment Help
Statistics Assignment Help
Physics Assignment Help
Chemistry Assignment Help
Math Assignment Help
Biology Assignment Help
English Assignment Help
Management Assignment Help
Engineering Assignment Help
Programming Assignment Help
Computer Science Assignment Help
IT Courses and Help
ExpertsMind Services
Online Tutoring
Projects Assistance
Exam Preparation
Coursework Help
Programming Courses
Engineering Courses
Why Us ?
~Experienced Tutors
~24x7 hrs Support
~Plagiarism Free
~Quality of Work
~Time on Delivery
~Privacy of Work