31 October 2004 12:30-15:00
Signal Processing and Cognitive Radio
Dr. Bruce Fette

Abstract

Software Defined Radios have the ability to implement a wide variety of communications waveforms, and operate over a wide range of communication spectrum. They can readily emulate legacy communication equipment, and can be extended to new waveforms and applications, that have previously required extra system level equipment. The US Government has developed the Joint Tactical Radio System (JTRS) to develop standards for US government equipment that will assure a common core framework for the waveform signal processing software and the network communications functionality.  This Software Communication Architecture (SCA) is the specification of that core framework for JTRS Software Defined Radios.

A Cognitive Radio adds a level of additional capability to a Software Defined Radio. The Cognitive Radio brings a capability to simplify the activities of its user, to interact with his support systems, and to be generally more productive. The Cognitive Radio is also able to learn the machine behaviors that make it a more effective radio, by interacting with other radios, other radio networks, and other network infrastructure.

This tutorial will review SDR architectural principles, the basic signal processing issues of the SDR, and the architectural extensions to a Cognitive Radio to enable machine learning techniques. Finally we will sketch out the roadmap leading to the Cognitive Radio vision, and the time frame over which these technologies will become ready for integration into the Cognitive Radio.

Biography

Dr. Fette is Chief Scientist of the ISSPD division of General Dynamics – C4S in Scottsdale Az. He has been with General Dynamics (previously Motorola) 33 years, working in advanced signal processing for telephony and RF communications. Dr. Fette has 35 patents, and has been awarded the “Distinguished Innovator Award”. Previously with Motorola, he was a member of the Motorola Science Advisory Board, and a Motorola Dan Nobel Fellow. Dr. Fette received his BSEE 1969 University of Cincinnati, MSEE 1974 Arizona State University, PhD 1981 ASU. Dr. Fette worked with the SDR Forum from its inception, currently performing the role of Technical Chair, and is a panelist for the IEEE Conference on Acoustics Speech and Signal Processing Industrial Technology Track. Dr. Fette currently heads the General Dynamics Signal Processing Center of Excellence.