Embedded Systems Engineer

Summary 0
Extremely faint signal detection and signal estimation, non-linear optimization.
Data mining and machine learning, pattern recognition, data reduction/compression, compressed sensing.
Signal processing for communication and networks, cognitive radios.
Data communication protocols design (SPI, I2C, bus).
Modulation/Demodulation, ECC, R-S encoder/decoder, coding theory.
Linear algebra, matrix theory and analysis, stochastic signal processing and wireless communication.
Digital system design experience on FPGA, experience in PIC, TI DSP.
Experience in C/C•••••/••••• programming, assembly, Xilinx FPGA architecture, ModelSim, VHDL (functional and RTL codes), MATLAB and National Instrument Measurement Studio programming.
Experiences 0
Advanced Embedded System Engineer, Leggett & Platt Inc. R & D. December ••••• Present
Developed an optimizer to tune in adaptively non-linear system parameters of stochastic resonance model and noise
intensity via particle swarm optimization, the faint signal could be detected and estimated even when input SNR •••••dB.
Designed a freq scan method to estimate periodic/ quasi-periodic faint signal freq without priori knowledge of signals.
Developed periodic low frequency signal acquisition method from sensor noisy data via Hilbert Huang Transform (HHT).
Proposed highly adaptive data classification algorithms based on SVM.
Designed Hidden Markov Models and Bayesian Networks to detect weak audio signals.
Biometric monitoring for Boeing flight simulator using •••••.
Developed high performance data compression algorithms SRM (structured random matrix) for sparse audio signals
classification and recognition, implemented on FPGA.
Designed pre-amplifier, band-pass FIR filter and signal envelop detector using FPAA for audio signal processing.
Implemented in signal processing and c/c••••• for embedded anti-snore detector which performs adaptive signal detection,
along with two other members who execute test tasks and documentation compilation, shipped the product to European
Union market and verified detection rate over competitor products by •••••% with only 1/••••• price of the latter.
Developed ••••• channels high-speed real-time intrusion detection system based on cross-correlation calculations on Xilinx
Spartan•••••A DSP FPGA, utilized multiple parallel XtremeDSP Slices to achieve data processing speed up to •••••MHz.
Developed high speed DDR LVDS transmitter/receiver digital interfacing DSP and FPGA.
Post-doc Research Associate, Department of Electrical Engineering & Computer Science, the University of Tennessee at
Knoxville, March ••••• December •••••
Investigated cognitive radio spectrum sensing technology using Belief Propagation algorithm (narrow band signals).
Developed wide band primary radio spectrum sensing algorithm based on OMP (orthogonal matching pursuit) with
extremely low sample rate on FPGA.
Digital modulation/demodulation, ECC algorithm design, encoder/decoder experience.
Pursued wide band cognitive radio spectrum allocation scheme through game theory.
Interference alignment algorithm design for multi-user MIMO network communication.
Studied wireless security protocols (e.g., encryption and decryption) transmission of vehicles networks.
Executed TCP/IP, socket programming using C•••••, and V2V, V2I networks framework was constructed.
Investigated •••••, DSRC and WAVE wireless protocols.
Graduate Research Assistant (PhD), Mech & Electrical Engineering, Beijing Institute of Technology, China, September
••••• - July •••••
Developed real-time trajectory identification algorithm using Kalman filter, STFT, WVD, wavelet and spectrum estimation methods.
Trajectory calculation and optimization design using 4th order Runge-Kutta, combined with an interior-point algorithm.
Designed Trajectory Calculation Device based on DSP (TI TMS•••••VC•••••).
Designed Trajectory parameter storage and test circuit based on ARM•••••
Electrical Product Development Engineer, Yangzi River Resource Electronic Corp., Beijing, China, July ••••• July •••••
Signal auto-correlation and cross-correlation, power spectrum of Transient Evoked Oto-acoustic Emissions (TEOAE) are
developed, and the prototype board was validated on DSP + FPGA platform.
Electrical Engineer, Strong Electronic Corp., Taiyuan, China, July ••••• Sep. •••••
HDTV digital baseband signal processing, real-time embedded system design, adaptive filtering design
Graduate Research Assistant (Master), Mech & Electrical Engineering, Shanxi Agricultural University, China, September
••••• July •••••
Automation control system design of temperature and humidity (Silicon Lab MCU).
Control model design based on multiple parameters optimization via the simplex method.
DSP Algorithm Engineer, Fujing Medical Electronic Corp., Taiyuan, China, July ••••• Sep. •••••
Advanced biomedical signal processing algorithm design, statistical signal processing and modern signal processing
Patents 0
Non-contact detection of physiological data using stochastic resonance, ••••• •••••, Jason Turner, Travis Brummett,
Caleb Browning, US Patent Application No. •••••/•••••, •••••
Weak Signal Detection and Pattern Recognition Algorithm, ••••• •••••, Caleb Browning, Ryan Chacon, US Patent
Application File No. ••••• (•••••).
Education 0
Ph.D. in Mech & Electrical Engineering, July •••••, Beijing Institute of Technology, China
M.S. in Mech & Electrical Engineering, July •••••, Shanxi Agricultural University, China
B.S. in Mech & Electrical Engineering, July •••••, Shanxi Agricultural University, China