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
Illustrations of calling the rand function, Illustrations of calling the ra...
Illustrations of calling the rand function: The function ‘rand’ can be used to produce random real numbers; calling it produces one random real number in the range from 0 to
Singal system , Q.1: Consider the transmission of a sinusoid x(t) = cos(2f...
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 fro
Programs to determine discrete fourier transform, A 12point sequence is x ...
A 12point sequence is x (n) defined as x(n) = { 1, 2, 3, 4, 5, 6, 6, 5, 4, 3, 2, 1}. Write MATLAB programs to (a) Determine the DFT X (k) of x(n) and plot (using stem function)
sparse storage , Compare results/performance with tridiagonal Gaussian eli...
Compare results/performance with tridiagonal Gaussian elimination solver for the problem arising from y''=f on (0,1) with y(0)=0=y(1). You may also need to use sparse storage an
Rules for variable names, Rules for variable names: In addition, the v...
Rules for variable names: In addition, the variable names must always be mnemonic that means they should make some sense. For illustration, if the variable is storing the radi
Functions, Need help with creating functions in matlab.
Need help with creating functions in matlab.
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
Find the total per phase inductance and per phase shunt, A 300 km, 3phase,...
A 300 km, 3phase, 50Hz transmission line has spacing as shown in Figure 2. Each phase of the line consists of a bundle of three conductors. (a) Find the total perphase induct
Modified distribution mehtod, Matlab code for MODI
Matlab code for MODI
Null basis and range basis, You will write functions • B=null basis(A,tol);...
You will write functions • B=null basis(A,tol); • B=range basis(A,tol); The function null basis takes a matrix A as input, and outputs a basis for the null space of A, obtained via
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