Miscellaneous

A Beginner’s Guide to OFDM

OFDM slices the spectrum just like bread

In the recent past, high data rate wireless communications is often considered synonymous to an Orthogonal Frequency Division Multiplexing (OFDM) system. OFDM is a special case of multi-carrier communication as opposed to a conventional single-carrier system.  The concepts on which…
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Minimum Shift Keying (MSK) – A Tutorial

Minimum Shift Keying (MSK) is one of the most spectrally efficient modulation schemes available. Due to its constant envelope, it is resilient to non-linear distortion and was therefore chosen as the modulation technique for the GSM cell phone standard. MSK…
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The Master Algorithm

Definition of correlation

Recently, I was reading the book The Master Algorithm by Pedro Domingos — a Professor at the University of Washington in machine learning. According to the description of his book, The Master Algorithm in Machine Learning A spell-binding quest for…
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Sampling and the Mysterious Scaling Factor

An atom and the solar system

This post treats the signals in continuous time which is different than the approach I adopted in my book. The book deals exclusively in discrete time. Some time ago, I came across an interesting problem. In the explanation of sampling…
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A Unit Impulse in Continuous-Time

Width of a sinc signal increases and approaches a constant, just like an eagle spreading its wings

This post treats the signals in continuous time which is different than the approach I adopted in my book. The book deals exclusively in discrete time. A unit impulse is defined as     The result is an impulse with…
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