Pre-requisites Sampling theorem – baseband sampling How to Interpret FFT results – complex DFT, frequency bins and FFTShift Analytic signal, Hilbert Transform and FFT Extracting instantaneous amplitude,phase,frequency – application of…

# Category: Signal Processing

This post is a part of the book : Digital Modulations using Matlab : Build Simulation Models from Scratch – by Mathuranathan Viswanathan Pre-requisites Sampling theorem – baseband sampling How…

Pre-requisites Sampling theorem – baseband sampling How to Interpret FFT results – complex DFT, frequency bins and FFTShift Related topic: Analytic signal, Hilbert Transform and FFT Extracting instantaneous amplitude,phase,frequency –…

“What is the best filter that I should use?” is often the question asked by many. There exists two different types of Linear Time Invariant (LTI) filters from transfer function standpoint…

Tapped-delay line filters (basically FIR filters) are best to simulate multiple echoes originating from same source. Hence they can be used to model multipath scenarios. Choose frequency-flat or frequency selective: If the…

This tutorial is a part of the website https://www.gaussianwaves.com and created under Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License. You must credit the author in your work if you remix, tweak,…

In the previous post, Interpretation of frequency bins, frequency axis arrangement (fftshift/ifftshift) for complex DFT were discussed. In this post, I intend to show you how to obtain magnitude and…

Four types of Fourier Transforms: Often, one is confronted with the problem of converting a time domain signal to frequency domain and vice-versa. Fourier Transform is an excellent tool to…

Root Mean Square (RMS) value is the most important parameter that signifies the \(size \; of \; a \;signal\). Defining the term “size”: In signal processing, a signal is viewed…

We live in the age of smart phones that can be loaded with numerous applications to communicate with each other. What’s next ? Where do we go from here ?…

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