On Physics of Productivity

Isaac Newton

James Clear, an expert on habits formation, wrote an excellent essay titled The Physics of Productivity: Newton’s Laws of Getting Stuff Done. In that article, he explained Newton’s three laws of motion from his book The Principia: Mathematical Principles of…
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Why Building an SDR Requires DSP Expertise

Bandwidth, power and DSP correspond to the traditional trio of raw materials, energy and knowledge

In an introduction to signals, we discussed the idea that the any activities around us, starting from subatomic particles to massive societal networks, are generating signals all the time. Since mathematics is the language of the universe and digital signals…
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Costas Loop for Carrier Phase Synchronization

Output from the Costas Loop block after phase convergence

Costas loop is a carrier phase synchronization solution devised by John Costas at General Electric Company in 1956 [1]. It had an enormous impact on modem signal processing in general and carrier synchronization in particular. At that time, it was…
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The Big Picture of Localization

Two way transmission

Digital Signal Processing (DSP) enables us to find the range of a device transmitting a wireless signal with a particular structure under some conditions. To understand how this process works, we need to look at the big picture of a…
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There are 26 letters in English language and countless rules. The language of signal processing is simpler.

- It has only 1 letter: a sample at time 0. From there, we can build any discrete-time signal on which our 1s and 0s can be mapped.

- It has one major rule which is repeatedly employed for demapping the received signal to bits.


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