Analytic signal & Hilbert transform (FFT) — Matlab/Python envelope
Build the analytic signal with Hilbert or FFT, extract envelope and instantaneous phase/frequency — Matlab, Python, and an interactive Hilbert demo.
FIR vs IIR filters — how to choose for your design
FIR vs IIR tradeoffs: linear phase, stability, order, and when each wins — with links to digital filter design articles.
Foundations of Signal Processing – Martin Vetterli, Jelena Kovacevic, and Vivek K Goyal
Download here -> Key focus: Free ebook on Signal processing Read it here: https://www.gaussianwaves.com/gaussianwaves/wp-content/uploads/2017/02/FSP_v1.1_2014.pdf Licensed under Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License
Phaselock Techniques – Floyd M. Gardner [Book review]
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 locked loop (PLL) design. The collection of topics in this book provides an excellent source of information to researchers and engineers for understanding and application … Read more
Model a Frequency Selective Multipath Fading channel
Multipath & PDP (same on every page in this path) 1. Power delay profile → 2. Scattering function → 3. TDL modeling (you are here) Tools: PDP demo · 3GPP TDL A brief intro to modeling a frequency selective fading channel using tapped delay line (TDL) filters. Rayleigh & Rician frequency-selective fading channel models explained. … Read more
Histogram to PDF in Matlab — normalize bins and overlay the theoretical curve
Turn a Matlab histogram into an estimated PDF: normalize by sample count and bin width, then overlay normpdf / theoretical densities for Gaussian, Rayleigh, and exponential checks.
OFDM cyclic prefix length — how long must the CP be? (Matlab demo)
How long should the OFDM cyclic prefix be? CP must cover the channel delay spread so the FFT sees circular convolution — Matlab hands-on plus overhead calculator.
Logical effort formula for CMOS gate delay — sizing examples (NAND, inverter chain)
Logical effort delay model: how to size CMOS gates and inverter chains from topology and fan-out, with worked NAND and formula examples — without a full SPICE run.
FFT magnitude and phase spectrum — how to interpret (and fix noisy phase)
How to get amplitude and phase from an FFT: |X[k]|, atan2, why phase looks noisy, the magnitude threshold fix, Matlab + Python, and links to bins/fftshift and the FFT calculator.
Interpret FFT results — complex DFT, frequency bins, and fftshift
How DFT bins map to Hz, what negative frequencies mean, when to use fftshift/ifftshift, and how this pairs with magnitude/phase plots.