FPGA · DIGITAL COMMUNICATIONCOMPLETED
QPSK Baseband Link and Visualization
PRBS, Gray mapping, phase channel, hard decisions, BER, UART telemetry and Python constellations in one verified flow.
Read project record →Continuously learning and building
Hello, I am JiaYu.I finish the engineering—and document the process.
This is my portfolio, technical blog, project archive, learning knowledge base and toolbox. I keep long-term records of communications, DSP, embedded systems, FPGA and computing practice.
Featured Projects
FPGA · AD/DACOMPLETED
Multi-Function DDS Generator and Measurement System
Four waveforms, AD/DA acquisition, live statistics and a seven-segment display in one FPGA design.
Read project record →STM32 · REAL-TIME CONTROLSOFTWARE VERIFIED
FreeRTOS Multi-Mode Smart Car
Dual-wheel PID, encoder odometry, line following, avoidance, task scheduling, Flash parameters and safety protection.
Read project record →Latest records
Recently updated
Latest source-backed additions across projects, writing, notes and lab logs.
Latest update:
- Advanced Mathematics - Collection of FormulasPostgraduate Entrance Exam Mathematics Study Notes: Advanced Mathematics - Formula Collection. Original formulas, diagrams, and example problems are retained.
- From Pixel Coordinates to a Safe Grasp: Five Boundaries in a Vision-Guided ArmUses the STM32 vision-arm project to explain why color detection, four-point calibration, inverse kinematics, robust serial transport and hardware safety need separate verification.
- Vision-Guided Arm Calibration, Communications and Hardware Acceptance ChecklistA staged checklist covering power, vision, calibration, kinematics, serial transport, FreeRTOS and physical safety from simulation to commissioning.
- FPGA DDS from Frequency Word to Measurement Display: A Verifiable PathLayered design and verification for the phase accumulator, waveform LUT, sample-valid contract, statistics and board display.
- From Constellation to RTL: A Verifiable Order for Building a QPSK LinkA verification-first sequence for Gray mapping, phase rotation, hard decisions and BER alignment.
- MATLAB Modulation Recognition: Leakage-Free Data and Interpretable FeaturesA reliable workflow from signal generation and SNR injection through normalization, features and confusion-matrix analysis.