Pre-requisites Sampling theorem – baseband sampling How to Interpret FFT results – complex DFT, frequency bins and FFTShift Introduction Fourier Transform of a real-valued signal is complex-symmetric. It implies that…

# GaussianWaves Posts

“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…

Read More Choosing a filter – FIR or IIR – Understanding the design perspective

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Read More Foundations of Signal Processing – Martin Vetterli, Jelena Kovacevic, and Vivek K Goyal

The author, Floyd M. Gardner an influential expert in the area of PLLs, has presented a good reference book that encompasses all the theoretical and mathematical concepts for the phase…

Read More Phaselock Techniques – Floyd M. Gardner [Book review]

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…

Read More Modeling a Frequency Selective Multipath Fading channel using TDL filters

Generation of random variables with required probability distribution characteristic is of paramount importance in simulating a communication system. Here, I will demonstrate how we can generate a simple random variable, estimate &…

Read More How to use Histogram function in Matlab to plot the estimated PDF curve

This tutorial is a part of the website http://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,…

Read More OFDM and Cyclic Prefix – a handson demonstration using Matlab

Introduction In today’s digital world the most important aspect of any processor is how fast can it function and support multiple applications. Often, the chip design engineers are confronted with…

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