Designed a high-performance LDPC decoder for a SoC for 5G NR with a software-defined approach in one month.OFDMA and 5G NR L1 phy hardware/software architecture consulting for ISC (integrated small cell) applications.

Designed the etracer, the world's most advanced curves tracer for vacuum tubes. Works include schematic capture, PCB layout , firmware/DSP code development and PC GUI software development with Python/Tkinter. This project involves implementing cutting edge technologies such as digital signal processing, feedback control system, switching mode power supplies, RTOS, etc. to solve an old problem. etracer is very well received by customers worldwide.Hired by a law company as an expert witness to provide professional opinions on a lawsuit between an US software company and a first-tier telecom company in Switzerland.

Represented Calix at the ITU-T SG15 Q4 meetings and contribute to the development of ADSL,VDSL2 and G.fast standards.Architecture design for a SELT (Single-Ended-Loop-Test) software package.

Led a team with more than 50 engineers and involved in the design and development of ADSL, ADSL2, VDSL, VDSL2, G.hn and G.fast modems.Represent Metanoia at the ITU-T SG15 Q4 and Broadband Forum meetings and contributed to the development of ADSL, VDSL2 and G.fast standards.Successfully made our products meeting various certifications (eg. Broadband Forum IR-337) and shipped to leading companies in the telecommunications industry such as Huawei and Swisscom.

DSP code development for a portable MP3 decoder based on an Analog Device 2181 DSP.ASIC design for an ARM9-based multimedia SoC.

Firmware development for USB media readers that access non-volatile memory media such Compact Flash card, SD card and flash memory. Schematic capture and PCB layout.