Short-Data-Record Design and Analysis of Adaptive Receivers for Smart-Antenna-Equipped DS/CDMA Wireless Networks

Mr. Ioannis Psaromiligkos

Dept. of Electrical Engineering
University of New York at Buffalo
Buffalo, New York

Monday, April 2nd, 11:00 AM, ENS 637

ip2@eng.buffalo.edu

Abstract

The subject of this talk is the design of adaptive receivers for rapidly changing code-division-multiple-access (CDMA) wireless communications environments. We will introduce a new theoretical framework and practical wireless communications technology for adaptive receiver designs whenever high-dimensional adaptive processing with short data records is desired. The short data record point of view, which will be the dominant principle throughout this talk, is motivated by the typical (realistic) wireless communication environment that changes rapidly and limits the number of data available for adaptation and redesign.

Special emphasis will be given to the problems of synchronization and demodulation. First, we will describe the development of analytic short-data- record tools for performance evaluation of adaptive receivers. These studies reveal the causes of performance deterioration under finite data-record-sizes and provide the guidelines for the modification of existing receivers, as well as the development of new receivers with improved short-data-record performance characteristics.

Finally, we will investigate the inverse problem of identifying the data record size that is necessary to achieve a prescribed performance level.

A list of Telecommunications and Signal Processing Seminars is available at from the ECE department Web pages under "Seminars". The Web address for the Telecommunications and Signal Processing Seminars is http://anchovy.ece.utexas.edu/seminars