How to Detect and Compensate Doppler Shift
In this article, we learn how to estimate doppler shift in a signal and also how to compensate it.
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View allWhat is Doppler Shift?
Doppler shift is the change in frequency of a signal caused by the relative motion between a transmitter and a receiver. This article explains what it is, derives the equation, and shows how it appears in the time domain and the frequency domain.
What is a Cyclostationary Signal?
This article discusses what a cyclostationary signal is, how it differs from stationary and non-stationary signals, with real examples and Python code to visualize the difference.
Cyclic Autocorrelation Function (CAF): How BPSK and QPSK Differ in Cyclostationary Analysis
The Cyclic Autocorrelation Function (CAF) reveals hidden periodic structure in modulated signals. This article explains what the CAF is, how to compute it, and why BPSK and QPSK produce fundamentally different CAF signatures — a difference that cannot be seen in a standard power spectrum.
About the Author
Hi, I'm Nithya!
I am a DSP researcher currently based in Germany. For the past 8 years, I have worked on various signal processing projects with industry leaders like Airbus Defence and Space GmbH and renowned research institutes like Fraunhofer IIS. I've always believed that you learn best through teaching. I love breaking complex systems down into simple signal processing concepts, and that is the inspiration for this blog - to share my work and knowledge with everyone who is as passionate about signal processing as I am.
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Intuition First
I believe the best explanations start with intuition, not equations. Math is a tool, not a barrier.
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