Digital Communications

3. (a) Describe and explain with the aid of graphs how a square wave pulse train with frequency f and amplitude A can be generated using Fourier series. As part of your answer you should include consideration of the effect of increasing the number of Fourier series terms used. (5 marks)

(b) Describe and explain Nyquist’s sampling theorem and its relevance in communications systems. Using graphs of sine waves with different frequencies, explain the importance of sampling rate and quantisation. (6 marks)

Don't use plagiarized sources. Get Your Custom Essay on
Digital Communications
Just from $13/Page
Order Essay

(c) With the aid of graphs, explain what signal conditioning would be desirable prior to transmission of a rectangular pulse train signal down a communications channel. (5 marks

(d) Explain the use of channel coding in Digital Communications and explain how the Hamming distance can be determined for Block Codes.

e) Navigate to Kingston University’s public website at, using a web browser of your choice. The following questions require you to inspect the site’s certificate: What type of certificate is it, when was it created, and when will it expire? What is the name of Kingston’s Certificate Authority (CA)? In your opinion, why might the university have chosen this particular CA? (5 marks)

Essay Assign
Calculate your paper price
Pages (550 words)
Approximate price: -

Our Advantages

Plagiarism Free Papers

All our papers are original and written from scratch. We will email you a plagiarism report alongside your completed paper once done.

Free Revisions

All papers are submitted ahead of time. We do this to allow you time to point out any area you would need revision on, and help you for free.


A title page preceeds all your paper content. Here, you put all your personal information and this we give out for free.


Without a reference/bibliography page, any academic paper is incomplete and doesnt qualify for grading. We also offer this for free.

Originality & Security

At Essay Assign, we take confidentiality seriously and all your personal information is stored safely and do not share it with third parties for any reasons whatsoever. Our work is original and we send plagiarism reports alongside every paper.

24/7 Customer Support

Our agents are online 24/7. Feel free to contact us through email or talk to our live agents.

Try it now!

Calculate the price of your order

We'll send you the first draft for approval by at
Total price:

How it works?

Follow these simple steps to get your paper done

Place your order

Fill in the order form and provide all details of your assignment.

Proceed with the payment

Choose the payment system that suits you most.

Receive the final file

Once your paper is ready, we will email it to you.

Our Services

We work around the clock to see best customer experience.


Flexible Pricing

Our prices are pocket friendly and you can do partial payments. When that is not enough, we have a free enquiry service.


Admission help & Client-Writer Contact

When you need to elaborate something further to your writer, we provide that button.


Paper Submission

We take deadlines seriously and our papers are submitted ahead of time. We are happy to assist you in case of any adjustments needed.


Customer Feedback

Your feedback, good or bad is of great concern to us and we take it very seriously. We are, therefore, constantly adjusting our policies to ensure best customer/writer experience.