Communication Theory2026-07-14
From Constellation to RTL: A Verifiable Order for Building a QPSK Link
A verification-first sequence for Gray mapping, phase rotation, hard decisions and BER alignment.
View detailsTechnical Writing
Technical Blog
Writing about communications, signal processing, embedded systems, FPGA and computing fundamentals.
Digital Signal Processing2026-07-12
Five Decisions to Make Before Designing a Fixed-Point FPGA FFT
A design checklist covering width, scaling, twiddle factors, data order and streaming timing for fixed-point FFTs.
View detailsEmbedded Systems2026-07-10
FreeRTOS Priority Is About Urgency, Not Importance
Design task priorities from deadlines, blocking relationships and resource contention rather than business labels.
View detailsDatabases2026-07-08
Why MySQL Did Not Use the Index: A Structured Debugging Path
Diagnose missing index use through query shape, selectivity, type conversion, statistics and measured execution plans.
View detailsEmbedded Systems2026-07-14
Non-Blocking STM32 Temperature Monitoring: From Sampling State Machines to Alarm Tasks
A dual-channel example covering non-blocking sampling, threshold management, alarm cadence, persistence and board bring-up.
View detailsFPGA2026-07-14
FPGA DDS from Frequency Word to Measurement Display: A Verifiable Path
Layered design and verification for the phase accumulator, waveform LUT, sample-valid contract, statistics and board display.
View detailsCommunications and Algorithms2026-07-14
MATLAB Modulation Recognition: Leakage-Free Data and Interpretable Features
A reliable workflow from signal generation and SNR injection through normalization, features and confusion-matrix analysis.
View detailsAlgorithms and Python2026-07-14
RRT and RRT* Beyond Animation: Collision Checks, Rewiring and Repeatable Tests
Turn a planning animation into a testable planner through step size, edge collision, goal connection and correct RRT* rewiring.
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