Discrete-time signals

By : Vandana Tanwar

Updated : Jan 29, 2021, 7:23

Discrete-time signals refers to the part of the sequence of quantities of the time series. It also means the sequence of numbers: x D fxŒnНg; 1 <n< 1: Where, n is an integer, and xŒnН is the nth sample in the sequence. A discrete-time signal arises from the sample of continuous time series. Discrete-time series questions are asked in various competitive exams like GATE, ISRO, and JEE. 

Discrete-time signals GATE questions are simple to solve and easy to understand. The best way to prepare for this topic is by solving the Discrete-time signals quiz regularly as it will help you get acclimatized with the paper pattern and help develop time-management skills. Now let us do an in-depth study of Discrete-time signals for GATE ECE.

Important Discrete-time signals Topics for GATE ECE

While conceiving the Discrete-time signals, it's pervasive to focus on the cardinal topics to clear GATE exams in one go. Here is the rundown of some vital Discrete-time signals topics for GATE ECE.

Topic

Explanation

Discrete-Time Fourier Transform (DTFT)

It refers to Fourier analysis to the sequence of values to build a frequency that involves the periodic summation of Fourier.  

Z Transform

Here, the candidate gets expected to compute the z-transform of the discrete-time signal and analyse the signal in the frequency domain. 

Interpolation of Discrete-time signals

It is the tool used in the application of digital signal processing with discrete-time samples of signal amplitude.

Tips to Solve Discrete-time signals Questions

  • The foremost step is to comprehend the Discrete-time signals GATE syllabus as few topics change every year. After that, prepare a well-structured study pan.
  •  Purchase the most recommended books. Use one book to prepare notes and other books to resolve doubts and for references.
  •  Analyse and evaluate each topic in detail. Once you complete, test your understanding by solving Discrete-time signals MCQ questions.  
  • Make Discrete-time signals MCQ pdf so you can refer to those questions again before the exam.  If possible, design some flashcards for quick revision and retrieval. 

Importance of Discrete-time signals in GATE Exams

  • It holds a significant weightage in GATE Exams. Every year 5-6 mark questions get asked from this section. It helps to amplify the overall percentage. 
  •  This section tests your knowledge and measures your understanding of the subject matter.
  • It examines your way of approaching and solving problems in real-life situations.
  • It checks your critical thinking skills and evaluates your proactiveness to think independently and make decisions.

Most Recommended Books for Discrete-time signals

Each Discrete-time signals book is recommended by topper based on their popularity and usage. These books will boost your preparation and contains detailed Discrete-time signals study material for GATE ECE.

Book

Author/Publication

Signals and Systems

Alan V. Oppenhiem, S. Hamid Nawab

Signals and Systems

A. Anand Kumar

Signals and Systems

Simon Haykin and Barry Van Veen

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Frequently Asked Questions (FAQs)

Q. How do you convert a continuous-time signal to a discrete-time signal?

You can convert a continuous-time signal to a discrete-time signal using these 3 steps:

  • Sampler
  • Quantizer
  • Coder

Q. Can I download Discrete-time signals notes for ECE?

Yes, you can get Discrete-time signals notes for GATE pdf online.  BYJU'S Exam Prep also proffers high-quality and verified Discrete-time signals GATE notes designed by eminent experts and toppers.

Q. From where I can check the latest Discrete-time signals GATE syllabus?

You check the Discrete-time signals syllabus for GATE on the official website. You can refer to BYJU'S Exam Prep to get the latest GATE syllabus and Discrete-time signals GATE questions and answers pdf for free.

Q. Is age continuous or discrete?

Age gets measured in units or numbers. Like 5 years old or 22.3 years old that is infinitely accurate. Hence, age is continuous, not discrete

Q. How to differentiate between continuous-time and discrete-time signals?

If the signal gets defined over a continuum of the independent variable, it gets termed continuous-time signals. Whereas, if any variable has discrete values, it gets called discrete-time signals.