Li Chen

     Li Chen  B.Sc., M.Eng., Ph.D.

    Associate Professor in Electrical and Computer Engineering

    Biography

    Dr. Li Chen is currently an Assistant Professor of Computer Engineering at the University of Saskatchewan in Saskatoon. He received B. Eng. from Tianjin University in 1991. After that, he has worked as a Design Engineer on embedded systems for six years. He received Ph.D. degree from the University of Alberta in 2004. He presently teaches undergraduate and graduate courses in digital electronics and analog electronics.

    His general research areas are in VLSI and microelectronics. His current research focuses on radiation-tolerant memories and microelectronics, fault-tolerant systems and reconfigurable computing. One major project in radiation-tolerant field is to design a digital VLSI library and a reconfigurable 32-bit Forth processor. Error-correcting codes implementation with FPGAs and ASIC are also under investigation. Recently he received a NSERC strategy grant in biomedical area, developing a near-fall and fall detecting system for older adults. UWB sensors are used to measure the medical parameters.

    He is currently looking for graduate students, please send your brief introduction to li.chen[-at-]usask.ca.

    Publications

    Selected Journal Papers

    [10] Tao Wang, Li Chen, Anh Dinh, and Bharat Bhuva, "Single-Event Transients Effects on Dynamic Comparators in a 90nm CMOS Triple-Well and Dual-Well Technology", to be appeared in IEEE Transactions on Nulcear Science (TNS), December issue, 2009.
    [9] Anh Dinh, Yang Shi, Daniel Teng, Amitoz Ralhan, Li Chen, Vanina Dal Bello-Haas, Jenny Basran, Seok-Bum Ko, and Carl McCrosky, “A Fall and Near-Fall Assessment and Evaluation System,” The Open Biomedical Engineering Journal, 2009, 3, pp.1-7.
    [8] T. Wang, A. Dinh, L. Chen, D. Teng, Y. Shi, S.-B. Ko, V. Dal Bello-Haas, J. Basran, C. McCrosky, “A Transmission Line Modeling for IR-UWB Radars in Human Body Sensing and Detection,” International Review on Modeling and Simulations (IREMOS) Journal - October 2008, Praise Worthy Prize, pp. 234-240.
    [7] Buchanan, N., Chen, L., Gingrich, et al. (2008). Radiation qualification of the front-end electronics for the readout of the ATLAS liquid argon calorimeters, Journal of Instrumentation, Volume 3, October, P10005.
    [6] Buchanan, N., Chen, L., Gingrich, D., et al. (2008). ATLAS Liquid Argon Calorimeter Front End Electronics, Journal of Instrumentation, Volumn 3, September, P09003.
    [5] The ATLAS Collaboration, G. Aad, Buchanan, N., Chen, L., Gingrich, D., Liu, S., et al. (2008). The ATLAS Experiment at the CERN Large Hadron Collider, Journal of Instrumentation, Volume 3, August, S08003.
    [4] Dinh, A.v., Chen, L., Teng, D. and Pham, B. (2008). A Dual-Function RF Filter for 5GHz WLAN and UWB with Narrowband Interference Rejection, International Review of Electrical Engineering, Vol. 3, N.1, pp. 398-403, January-February.
    [3] Buchanan, N., Chen, L., Gingrich, D., et al. (2008). Design and Implementation of the Front End Board for the Readout of the ATLAS Liquid Argon Calorimeters, Journal of Instrumentation, Volume 3, March, P03004.
    [2] Dinh, A.v., Teng, D., Ko, S., Chen, L. and Cheng, X. (2008). UWB Communications Acquisition Techniques at Symbol Rate for IEEE Standard Channel Models, International Review of Electrical Engineering, Vol. 3, N.2, pp. 401-409, March-April.
    [1] Chen, L. and Gingrich, D. M. (2005). Study of n-Channel MOSFETs with an Enclosed-Gate Layout in a 0.18 micron CMOS Technology, IEEE Transactions on Nuclear Science, Vol. 52, pp. 861-867.

    Conference Publications

    [22] Accepted: X. Wang, A. Dinh, D. Teng, L. Chen, S. B. Ko, Y. Shi, V. Dal Bello-Hass, and J. Basran, “Impulse Based Range-Gated UWB Wireless Transceiver IC in 90nm CMOS for Medical Sensing Applications and Communications,” to appear in The 2009 IEEE International Conference on Ultra-Wideband (ICUWB 2009), Vancouver, BC, Canada, September 9-11, 2009, 4 pages.
    [21] Accepted: Qiao Zhang, Yang Shi, Seok-Bum Ko, Daniel Teng, Anh Dinh, Li Chen, Jenny Basran, Vanina Dal Bello-Haas, “Pulse Transit Time-based Blood Pressure Estimation Using Hilbert-Huang Transform,” to appear in The 31st Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC'09), Minneapolis, Minnesota, USA, September 2-6, 2009, 4 pages.
    [20] Tao Wang, Li Chen, Anh Dinh, and Bharat Bhuva, "Single-Event Transients Effects on Dynamic Comparators in a 90nm CMOS Triple-Well and Dual-Well Technology", IEEE Nulcear and Space Radiation Effect Conference (NSREC), Quebec City, Quebec, July 20-24th, 2009.
    [19] Anh Dinh, Daniel Teng, Li Chen, Seok-Bum Ko, Yang Shi, Carl McCrosky, Jenny Basran, Vanina Del Bello-Hass, “A Wearable Device for Physical Activity Monitoring With Built-in Heart Rate Variability,” IEEE 3rd International Conference on Bioinformatics and Biomedical Engineering, Beijing, China, June 11-13, 2009, 4 pages.
    [18] Kuande Wang, Li Chen, and Jianshen Yang. 2009. "An ultra low power fault tolerant SRAM design in 90nm CMOS", Canadian Conference Electrical and Computer Engineering", CCECE 2009, 3-6 May 2009 Page(s):1076 - 1079.
    [17] Anh Dinh, Daniel Teng, Li Chen, Yang Shi, Carl McCrosky, Jenny Basran, Vanina Del Bello-Hass, “Implementation of a Physical Activity Monitoring System for The Elderly People With Built-in Vital Sign and Fall Detection,” ITNG 2009, IEEE 6th International Conference on Information Technology: New Generations, Las Vegas, April 27-29, 2009, 4 pages.
    [16] Wang, T., Chen, L., Dinh, A.v., Teng, D. (2008). Single-Event-Transients Tolerant Comparators with Auto-Zeroing Techniques, IEEE 1st Microsystems and Nanoelectronics Research Conference, MNRC 2008, October 15, 2008, Ottawa, ON, Canada, pp13-16.
    [15] Dinh, A.; Teng, D.; Chen, L.; Shi, Y.; McCrosky, C.; Basran, J.; Del Bello-Hass, V.; Ko, S.B.; Ralhan, A.; Williams, D.; Windels, N.; Choudhury, A., 2008, “A fall detection and near-fall data collection system,” IEEE 1st Microsystems and Nanoelectronics Research Conference, MNRC 2008, October 15, 2008, Ottawa, Ontario, Canada, pp 117-120.
    [14] X. Wang, A. Dinh, D. Teng, L. Chen, S. B. Ko, Y. Shi, V. Dal Bello-Haas, J. Basran, “An Impulse Based Sensor for Medical Sensing Applications,” IEEE EMBC’08, August 20-24, 2008, Vancouver, BC, Canada, pp. 5737-5740.
    [13] A. Dinh, D. Teng, L. Chen, S. B. Ko, Y. Shi, J. Basran, V. Dal Bello-Haas, “Data Acquisition System Using Six Degree-Of-Freedom Inertia Sensor and ZigBee Wireless Link for Fall Detection and Prevention,” IEEE EMBC’08, August 20-24, Vancouver, BC, Canada, 2008, pp. 2353-2356.
    [12] D. Chen, Y. Choi, L. Chen, D. Teng, K. Wahid, and Seok-Bum Ko, “A Novel Decimal-to-Decimal Logarithmic Converter,” IEEE Int’l Symp. on Circuit and Systems, pp. 688-691, May 2008.
    [11] D. Chen, Y. Zhang, L. Chen, D. Teng, K. Wahid and S.B. Ko, “A Decimal-to-Decimal Antilogarithmic Converter”, IEEE Canadian Conference on Electrical and Computer Engineering, Niagara Falls, Ontario, Canada, May 2008.
    [10] J.S. Yang & L. Chen, 2007 "A New Approach for 4-T Loadless SRAM Cell," IEEE Canadian Conference on Electrical and Computer Engineering, May 2007.
    [9] E. Hjortland & L. Chen, 2007. “Development of Radiation-Hard 32-bit Forth Microprocessor with 0.18 um CMOS Technology,” IEEE Canadian Conference on Electrical and Computer Engineering, May 2007.
    [8] E. Hjortland & L. Chen, 2006. “Fault-Tolerant FPGAs by Online ECC Verification and restoration,” IEEE Region 5 Annual Technical Conference, pp. 234-238,
    [7] L. Chen & D. M. Gingrich, 2005. “Configurable SRAM Macro Design to Resist Total Dose Effects,” IEEE Canadian Conference on Electrical and Computer Engineering, pp. 690-693,
    [6] E. Hjortland, K. Nyberg, L. Chen & A. Hasan, 2005. “Navigation of Mobile Outdoor Robot using Fuzzy Logic Controller,” IEEE Canadian Conference on Electrical and Computer Engineering, pp.1037-1040,
    [5] D. M. Gingrich & L. Chen, 2004. “Radiation Tolerant Microelectronics by Design,” Canadian Association of Physicist Conference, Manitoba, CDROM, August,
    [4] D.M. Gingrich, S. Böttcher, N.J. Buchanan, L. Chen, J.A. Parsons & W. Sippach, 2002. “Radiation Tolerant Controller for a Switched Capacitor Array,” Thirteenth Biennial Single Event Effects Symposium, CDROM, April
    [3] D. M. Gingrich, N.J. Buchanan, L. Chen & S. Liu, 2002. “Ionizing Radiation Effects in EPF10K50E and XC2S150 Programmable Logic Devices,” IEEE Nuclear and Space Radiation Effects Conference, pp. 41-44, July
    [2] L. Chen & M. Margala, 2001. “Power Efficiency Driven Device Sizing of Pass-Transistor Digital Circuits in Low-Power CMOS,” International Workshop - Power And Timing Modeling, Optimization and Simulation,
    [1] D. Gingrich, L. Chen, N. Buchanan & C. Cojocaru, 2001. “Tests of the DMILL Implementation of the SCA Controller,” ATLAS project review, LAr Electronics Meeting, October

    Research Grants

    Teaching

    EE221
    Analog Devices

    Introduction to solid state electronics. Emphasis is on circuit design concepts with extensive discussion on diodes and diode circuits and on bipolar junction transistors (BJT) and field effect transistors (FET) as amplifiers and as switches.
    EE292
    A laboratory course focusing on basic skills in assembling and trouble-shooting electrical circuits, and using basic laboratory equipment. The exercises supplement and complement courses in the electrical engineering program. Experiments cover passive circuits and elements, frequency response of circuits, transformers and their equivalent circuits, diode and transistor properties, diode and transistor circuits, and combinatorial and sequential circuits.

    http://www.engr.usask.ca/classes/EE/292/
    EE392
    Electrical Engineering Laboratory III

    A laboratory course that supplements and complements the requisite courses and the EE program material in general. Experiments investigate bipolar transistor characteristics, three-phase transformers, DSPs, sampling, modulation, microcontrollers, Labview, and
    DC machines.

    http://www.engr.usask.ca/classes/EE/392/
    EE831
    Hardware Description Language

    Discusses hardware descriptive language (HDL) and techniques to design application specific integrated circuits (ASICs) for specific applications such as digital filters and embedded controllers. HDL is a C like language allowing parallel processing description and timing control. The detailed syntax of HDL will be presented along with techniques for problem analysis and circuit synthesis using field programmable gate arrays (FPGA) and more advanced Embedded Arrays that includes a built-in CPU.

    http://www.engr.usask.ca/classes/EE/431

    Research Projects

    Low-power, fault-tolerant memories and systems

    Ultra low-power digital and analog systems

    A reconfigurable fault-tolerant 32-bit Forth Engine

    Near-fall and fall detecting system

    Impulse UWB radar sensors for medical applications