1. Communication and Signal Processing. Dr. Y.C. Jenq http://web.cecs.pdx.edu/~jenq/ 2. Digital Signal Processing Y. C. Jenq, "A New Implementation Algorithm for Second Order IIR Filters," IEEE Transactions on Acoustics, Speech, and Signal Processing, Vol. ASSP-28, No. 2, April 1980. Y. C. Jenq, "On FIR Digital Filter Implementation for Interpolation," IEEE Transactions on Acoustics, Speech, and Signal Processing, Vol. ASSP-29, April 1981. Y. C. Jenq, "Digital Convolution Algorithm for Pipelining Multiprocessor System," IEEE Transactions on Computers, Vol. C-30, No. 12, December 1981. 5th Y. C. Jenq, "Discrete Time Method for Signal and Noise Measurements," IEEE Transactions on Instrumentation and Measurement, Vol-45, No. 2, April 1996. Y. C. Jenq, “Digital Signal Processing with Interleaved ADC Systems”, Journal of VLSI Signal Processing, Vol. 39, No. 3, March 2005, pp 267-271. 3. A/D & D/A Converters and Non-uniform Sampling DSP Y. C. Jenq, "Digital Spectra of Non-Uniformly Sampled Signals: Theories and Applications, Part I - Fundamentals and High Speed Waveform Digitizers," IEEE Transactions on Instrumentation and Measurement, Vol. IM-37, No. 2, June, 1988. Y. C. Jenq, "Digital Spectra of Non-Uniformly Sampled Signals: Theories and Applications, Part II - Digital Table Look-Up Tunable Sinusoidal Oscillators," IEEE Transactions on Instrumentation and Measurement, Vol. IM 37, No. 3, September 1988. Y. C. Jenq and Phil Crosby, "Sinewave Parameter Estimation Algorithm With Application to Waveform Digitizer Effective Bits Measurement," IEEE Transactions on Instrumentation and Measurement, Vol. IM-38, No. 4, December 1988. Y. C. Jenq, "Digital Spectra of Non-Uniformly Sampled Signals: Theories and Applications, Part III - A Robust Sampling Time Offset Estimation Algorithm For Ultra High Speed Waveform Digitizers Using Interleaving," IEEE Transactions on Instrumentation and Measurement, Vol. 39, No. 1, February 1990. Y. C. Jenq, "Digital Spectral of Non-Uniformly Sampled Signals: Theories and Applications, Part IV - Measuring Clock/Aperture Jitter of A/D Systems," IEEE Transactions on Instrumentation and Measurement, Vol-39, No. 6, December 1990. Y. C. Jenq, "Digital-to-Analog (D/A) Converters with Non-uniformly Sampled Signals," IEEE Transactions on Instrumentation and Measurement, Vol-45, No. 1, February 1996. Y. C. Jenq, "Direct Digital Synthesizer with Jittered Clocks," IEEE Transactions on Instrumentation and Measurement, Vol. 46, No. 3, June 1997. Y. C. Jenq, "Perfect Reconstruction of Digital Spectrum From Non-uniformly Sampled Signals," IEEE Transactions on Instrumentation and Measurement, Vol. 46, No. 3, June 1997, pp.649-652. Y. C. Jenq & Lerong Cheng, “Digital Spectrum of a Non-uniformly sampled 2- Dimensional Signal and Its Reconstruction,” IEEE Transactions on Instrumentation and Measurement, Vol. 54, No. 3, June 2005. 4. Fast Packet Network Y. C. Jenq, "On Stability of Slotted ALOHA Systems," IEEE Transactions on Communications, Vol. COM-28, No. 11, November 1980. Y. C. Jenq, "Optimal Retransmission Control of Slotted ALOHA Systems," IEEE Transactions on Communications, Vol. COM-29, June 1981. Y. C. Jenq, "Performance Analysis of A Packet Switch Based on Single-Buffered Banyan Network," IEEE Transactions on Communications, Vol. COM-31, No. 12, December 1983. Professor Jenq’s research interests are in the general areas of communications and signal processing. We are particularly interested in the practical aspects of the theory and applications of advanced digital signal processing techniques. These include applications in adaptive signal processing, medical signal processing, instrumentation and measurements, audio/video applications, data compression, and A/D & D/A converters. The following are some representative research topics: --Digital sampling-rate conversion for audio applications --Signal reconstruction with jittered data --High performance low cost digital audio equalizers --Digital adaptive notch filter for mobile phone applications --SNR measurement techniques with more than 100 dB dynamic range --Spectral analysis of nonuniformly sampled signals --Spectrum resolution enhancement via nonuniform sampling techniques --Improved A/D effective-bit algorithm SELECTED PUBLICATIONS 1. Digital Communications Y. C. Jenq, B. Liu, and J. B. Thomas, "Probability of Error in PAM Systems with Intersymbol Interference and Additive Noise," IEEE Transactions on Information Theory, Vol. IT-23, No. 5, September 1977. Y. C. Jenq, J. B. Thomas and B. Liu, "A Minimum Error Probability Tapped Delay Line Equalizer," IEEE Transactions on Communications, Vol. COM-25, No. 10, October 1977. Y. C. Jenq, B. Liu, and J. B. Thomas, "Threshold Effect on Error Probability in QAM Systems," IEEE Transactions on Communications, Vol. COM-28, No. 7, July 1980. Y. C. Jenq, "Probability of Error in CPSK Systems with Intersymbol Interference and Additive Noise," Journal of The Franklin Institute, Vol. 311, No. 5, May 1981.