Charoensak Charayaphan

I have been through many generations of electronics, starting from tubes, to transistors, to digital electronics, to microprocessors, to computers, etc. Of course, there are other interesting areas such as programming, Internet, etc.

Academic Qualification

• Bachelor of Engineering: Hons, second place in the class, Chulalongkorn University, Bangkok, Thailand
• Master of Applied Science: Electrical Engineering, Technical University of Nova Scotia, Nova Scotia, Canada
• PhD: Electrical Engineering, Technical University of Nova Scotia, Nova Scotia, Canada
• Other degrees: Post Graduate Diploma of Teaching in Higher Education (PGDipTHE), National Institute of Education, Singapore

Subjects that I am teaching

• VHDL Programming
• FPGA Technologies
• FPGA Designs and Applications
• Xilinx System Generator (and Matlab Simulink) for System Level Design of FPGA

Subjects that I taught:

• VLSI for Digital Signal Processors
• Microprocessor-based system design
• Compiler Design (developing a compiler)
• Digital Circuit Design
• CAD/CAM/CAE Laboratories
• Analog Circuit Design
• Logic Circuit Design
• PCB Layout Design
• C and C++ programming

Some of my research interests

• Applications of FPGAs (Field Programmable Gate Arrays) in digital signal, and image processing Real-time digital video processing
• Television video processing and picture quality enhancement algorithms
• VLSI architecture for digital signal processing
• Sigma-Delta signal processing for communication
• Pattern recognition, face detection and recognition
• Hardware for real-time adaptive signals processing using FPGA
• Real-time speech/audio signals processing and blind source separation
• Watermarking
• Wavelet
• Adaptive beamforming

Journal Papers:

• "Efficient Realization of Sigma-Delta Kalman Low-pass Filter in Hardware using FPGA", EURASIP Journal on Applied Signal Processing, vol. , pp. 1-11, 2005.
• "Performance Evaluation of 3rd Order LADF Sigma-Delta Modulator via FPGA Implementation", IEEE Journal on Signal Processing, vol. , no. pp., 2005.
• "Design of Low-Cost FPGA Hardware for Real-Time ICA-Based Blind Source Separation Algorithm", Special issue on "DSP in Hearing Aids and Cochlear Implants”, EURASIP Journal on Applied Signal Processing, vol. 18, pp. 3076-3086, 2005.
• “Design of optimal and narrow-band Laguerre filters for sigma-delta demodulators,” IEEE Trans. Circuits Syst. II, vol. 50, no. 7, pp. 368–375, July 2003.
• “Optimisation of a computer vision system for the interpretation of American Sign Language.” Medical and Biological Engineering and Computing, vol. 31, no. 5, pp. 509-515, 1993.
• "Correlation algorithm and sampling techniques for estimating signal-to-noise ratio of the electrocardiogram," Journal of Biomedical Engineering, vol. 14, pp. 516-520, Nov. 1993.
• "Image processing system for interpreting motion in American Sign Language," Journal of Biomedical Engineering, vol. 14, no. 5, pp. 419-425, Sept. 1992.
• "Estimation of signal-to-noise ratio of a quasiperiodic cardiovascular signals using coherency and correlation techniques," Medical and Biological Engineering and Computing, pp. 572-579. Nov. 1989.