PROJECTS LISTED IN REVERSE CHRONOLOGICAL ORDER

Russell, S. F., Rockwell International, 08/01/98-09/30/99, "RF Signals and Advanced Sigma Delta Converters." Software design, development, and testing for advanced Sigma-Delta data converter technology. Goals are to improve performance of existing converters.

Russell, S. F. & Dickerson, J. A., Rockwell International, 08/01/97-07/31/98, "Wireless Channel Security." Research initiative into Wireless Channel Security (WCS) that will provide new solutions to the problems of interference, denial of access, and spoofing that will be needed as the wireless telecommunications infrastructure expands. Specifically, the identification of weaknesses in wireless networking technology and the development of appropriate countermeasures.

Russell, S. F., Rockwell International, 05//97-03/98, "High Efficiency Power Amplifier Research." This project involves the investigation of methods to minimize envelope distortion caused by amplitude and phase nonlinearities in high-power amplifiers.

Russell, S. F., Rockwell International, 05//97-03/98, " High-Order Sigma Delta Converter Stability." Sigma-Delta data converter technology is used in a wide variety of communications and data processing applications. This project explores ways to determine the stability of a converter design and ways to optimize design parameters.

Russell, S. F., Rockwell International, 05/02/95-09/31/96, "High Efficiency Power Amplifier Excitation." This project involves the investigation of methods to minimize envelope distortion caused by amplitude and phase nonlinearities in high-power amplifiers.

Doherty, J. F., & Russell, S. F., Iowa State University/Center for Advanced Technology Development, 07/01/93-06/30/94, "A New Echo Canceler for Acoustic Environments." This project involves prototype development of a system that uses spread-spectrum ultrasound to cancel round-trip acoustic echoes in televideo conferencing and hands-free mobile voice communication. (Administered by Institute for Physical Research and Technology)

Russell, S. F., Rockwell International, 05/02/95-09/31/96, "High Efficiency Power Amplifier Excitation." This project involves the investigation of methods to minimize envelope distortion caused by amplitude and phase nonlinearities in high-power amplifiers.

Russell, S. F., Rockwell International, 10/15/93-10/14/94, "Interference Rejection." This project involves the investigation of phase-locked loop methods of interference rejection in radio communication systems.

Russell, S. F., Wormley, S. J., & Papadakis, E. P., Iowa State University/Center for Advanced Technology Development, 07/01/93-06/30/94, "Spread-Spectrum Ultrasonic Flaw Detection Instrument. "This project involves prototype development of two systems that implement a new global ultrasonic inspection technique that uses spread-spectrum signals to dramatically improve the signal-to-noise ratio over conventional pulse-echo methods. (Administered by Institute for Physical Research and Technology)

S. Russell (PI), Rockwell International, Cedar Rapids, Iowa, "Digital IIR Filter Design Program," 9/92-9/93. A design program used for filter design in wireless communication receivers.

S. Russell (PI), " Rockwell International, Cedar Rapids, Iowa, "Digital FIR Filter Design Program," 9/91-9/92. Feasability study for doing non-complex-conjugate digital filter design.

S. Russell (PI), Texas Instruments Corporation, Plano, Texas, "Digital Radio Techniques Study - Phase II," 1/90-12/90. Implementation recommendations for digital radio receivers.

S. Russell (PI), Texas Instruments Corporation, Plano, Texas, Digital Radio Techniques Study - Phase I," 5/89-12/89. Theory of digital signal processing for wireless communication receivers.

S. Russell (PI), Rockwell International, Collins Defense Communications, Cedar Rapids, Iowa, "Spectral Sorting Project," 10/87-10/88. Detection and intercept of secure communication transmissions.

S. Russell (PI), RCA Corporation, Communications and Information Systems, Camden, NJ, "Phase-I, HF Radio System Networking "Preliminary Concepts and Recommendations," 1986. Networking implementations for high-frequency wireless communication systems.