Solve 3 problems Solve 3 problems

Problem 1. Let y=(x[n-2]+x[n])/2. (a) Derive the frequency response function in theory by doing a z transform to the time domain equation. Express the result in polar form. (b) What are h[n] and its Fourier transform? (c) Sketch the magnitude of the frequency response function. (d) Write a Matlab program to obtain the H(jw). Compare the theoretical and experimental H(jw) both in amplitude and in phase. (e) For an input function x[n]=2sin(2n/2)+3*cos(2n/8), predict its output based on theoretical H(jw). In Matlab, obtain output y[n] and compare Matlab output with your theoretical prediction.(f) What is the expected auto-correlation coefficient for y at lags -3 to 3, if x is a random sequence. Verify it in Matlab.


Problem 2. For y=x[n]-2x[n-1]+x[n-2], answer the same questions in problem 1.


Problem 3. Let x be a random sequence and have a Gaussian distribution with zero mean and unit standard deviation. Let y1=(x[n-4]+x[n-3]+x[n-2]+x[n-1]+x[n])/5 and y2=(x[n-4]+2x[n-3]+3x[n-2]+2x[n-1]+x[n])/9.a) Find the theoretical frequency transfer functions for the two systems/operations.b) Sketch the magnitudes of the above transfer functions as a function of normalized frequency and comment on the similarities and differences of the two.c) Sketch the expectations of the normalized auto-correlation functions for y1 and y2 for 10 lags (on both sides of zero lag). Please do this part by thinking about what the expectations should be. Comment on the differences and similarities of two autocorrelation functions. Give as many details as you can think of. d) Simulate the magnitudes of the two transfer functions in Matlab. Do the simulation by generating x, y1 and y2. Find their FFT’s and then transfer function. Please do multiple simulations and find the averages. e) Compare the matlab simulated results with the theoretical ones by overlaying them on top of each other. If they are not the same, explain why?f) Do part c) in Matlab. Do the Matlab simulations agree with your sketches? If they don’t, comment on your reasoning in your sketches and where your thought went wrong. Please do not “cheat” by doing the matlab part first.Bonus part (20 pts) g) In doing part c) for y1, work out the standard deviations at lag 6, 7, and 8? Verify this in Matlab.

Calculate the price of your order

550 words
We'll send you the first draft for approval by September 11, 2018 at 10:52 AM
Total price:
$26
The price is based on these factors:
Academic level
Number of pages
Urgency
Basic features
  • Free title page and bibliography
  • Unlimited revisions
  • Plagiarism-free guarantee
  • Money-back guarantee
  • 24/7 support
On-demand options
  • Writer’s samples
  • Part-by-part delivery
  • Overnight delivery
  • Copies of used sources
  • Expert Proofreading
Paper format
  • 275 words per page
  • 12 pt Arial/Times New Roman
  • Double line spacing
  • Any citation style (APA, MLA, Chicago/Turabian, Harvard)

Our guarantees

Delivering a high-quality product at a reasonable price is not enough anymore.
That’s why we have developed 5 beneficial guarantees that will make your experience with our service enjoyable, easy, and safe.

Money-back guarantee

You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.

Read more

Zero-plagiarism guarantee

Each paper is composed from scratch, according to your instructions. It is then checked by our plagiarism-detection software. There is no gap where plagiarism could squeeze in.

Read more

Free-revision policy

Thanks to our free revisions, there is no way for you to be unsatisfied. We will work on your paper until you are completely happy with the result.

Read more

Privacy policy

Your email is safe, as we store it according to international data protection rules. Your bank details are secure, as we use only reliable payment systems.

Read more

Fair-cooperation guarantee

By sending us your money, you buy the service we provide. Check out our terms and conditions if you prefer business talks to be laid out in official language.

Read more
error: Content is protected !!