Lim Nguyen

Contact Information:

Scott Campus (Omaha)
PKI 201F
(402) 554-2752

Personal Links:

My Time and Toys

Professor, Associate Chair

Academic Degrees

  • Ph.D., Electrical Engineering, Rice University, 1996
  • M.S., Electrical Engineering, Caltech, 1991
  • B.S., Electrical Engineering, MIT, 1983
  • B.S., Mathematics, MIT, 1983

Areas of Research and Professional Interest

  • Self-Encoded Spread Spectrum and Multiple Access
  • Optical Code Division Multiplexing
  • Low-Coherence Fiber Optics for Random Noise Radar
  • Transform Techniques


  • System and Method for Performing Optical Code Division Multiple Access Communication Using Bipolar Codes (US 5,760,941).
  • Self-Encoded Spread Spectrum and Code-Division Multiple Access Communication System and Method (pending).
  • Heated Bridge Deck System and Materials and Method for Constructing the Same (pending).

Courses Taught

About Lim Nguyen

I was born in Hue and grew up in Da Nang, Viet Nam, and Tahlequah, OK.  I received the B.S. degrees in electrical engineering and mathematics from MIT (1983), the M.S. and Ph.D. degrees from Caltech (1991) and Rice University (1996), respectively, all in electrical engineering.

From 1983 to 1985, I was an EMC engineer with Xerox Corporation in El Segundo, CA where I performed electromagnetic compatibility (EMC) design and testing of printer and copier products.  I was an RF/microwave engineer with the Hughes Aircraft Company in 1985, working on the vehicular JTIDS radio program, and then with the Jet Propulsion Laboratory from 1985 to 1991 in Pasadena, CA.  There I worked on the receiver and exciter subsystems of the Deep Space Networks of NASA.  This included developing low noise, high frequency stability S- and X-band test signal generators for the Radio Science experiments during the Neptune encounter of the Voyager II spacecraft. From 1991 to 1996, I was an electronics engineer/program manager with the Space Vehicle Directorate at the USAF Phillips Laboratory in Albuquerque, NM.

Since 1996, I have been an assistant professor in the Department of Computer and Electronics Engineering at University of Nebraska-Lincoln. My current research interests are in RF and optical communications, application of spread spectrum to wireless and fiber optic communications, signal processing and transform techniques.

Selected Publications

  1. L. Nguyen, T. Dennis, B. Aazhang, and J. F. Young, ``Experimental demonstration of bipolar codes for optical spectral amplitude CDMA communication,'' IEEE Journal of Lightwave Technology, Sep 1997.
  2. L. Nguyen, J. F. Young, and B. Aazhang, ``Photoelectric current distribution and bit-error rate in optical communication systems using a superfluorescent fiber source,'' IEEE Journal of Lightwave Technology, Jun 1996
  3. L. Nguyen, B. Aazhang and J. F. Young, ``All-optical CDMA with Bipolar Codes,'' Electronics Letters, Mar 1995.
Conferences & Reports:
  1. W. M. Jang, and L. Nguyen, ``Capacity analysis of two-user self-encoded multiple access systems in AWGN channels, 34th Annual Conference on Information Sciences and Systems, Princeton University, Princeton, NJ, Mar 2000.
  2. L. Nguyen, ``Self-encoded spread spectrum communications,'' 1999 Military Communications Conference,� Atlantic City, NJ, Oct 1999.
  3. K. Wolfe, and L. Nguyen, ``Erbium-doped fiber amplifier technology for random noise radar,'' SPIE's 44th Annual Meeting, Subsurface Sensors & Applications Conference, Denver, CO, Jul 1999.
  4. L. Nguyen, and F. B. Fisk, ``LPD spread spectrum techniques for enhanced communication security,'' 1998 Military Communications Conference, Boston, MA, Oct 1998.
  5. L. Nguyen, ``A generalization of the Fourier and Hartley transforms,'' 31st Annual Conference on Information Sciences and Systems, John Hopkins University, Baltimore, MD, Mar 1997.
  6. T. Dennis, L. Nguyen, J.F. Young, and B. Aazhang, ``Experimental demonstration of bipolar codes for direct detection multi-user optical communications,'' Summer Topical Meetings on Broadband Optical Networks, Boulder, CO, Aug 1996.
  7. L. Nguyen, J.F. Young, and B. Aazhang, ``Photocurrent distribution of a superfluorescent fiber source,'' IEEE LEOS�95 Annual Meeting, San Francisco, CA, Nov 1995.
  8. L. Nguyen, B. Aazhang, and J.F. Young, ``BER of optical communication system with fiber source,'' 1995 IEEE International Symposium on Information Theory, Whistler, BC, Canada, Sep 1995.
  9. L. Nguyen, B. Aazhang, and J. F. Young,� ``Optical CDMA with spectral encoding and bipolar codes'', 29th Conference on Information Sciences and Systems, John Hopkins University, Baltimore, MD, Mar 1995.
  10. L. Nguyen, ``Wide-band phase-locked modulator,'' The Telecommunication and Data Acquisition Progress Report 42-89, Jet Propulsion Laboratory, Pasadena, CA, Apr-Jun 1989.