MIMO Wireless Systems Using Antenna Pattern Diversity
Mr. Liang Dong
Electrical and Computer Engineering
The University of Texas at Austin
Friday, April 5th, 3:00 PM, ENS 637
dong@ece.utexas.edu
Talk
Abstract
Multiple-input multiple-output (MIMO) wireless communication systems
employ multiple transmit and multiple receiver antennas to obtain
significant improvement in capacity. Unfortunately, the capacity is
limited by the correlation of sub-channels in non-ideal scattering
environments. In this talk we investigate the impact of using pattern
diversity, antennas with different radiation patterns, on the capacity of
the MIMO system. We present a ray tracing model for generating narrowband
MIMO channel realizations that takes into account the antenna patterns of
the transmitter and the receiver and naturally includes the effects of
polarization. Using a computational electromagnetic simulator, we show
that: (1) MIMO systems that exploit antenna pattern diversity allow
improvement over dual-polarized systems; (2) The capacity increase of such
MIMO systems depends on the characteristics of the scattering environment.
Biography
Liang Dong received the B.S. degree in applied physics and the B.S. degree
in computer engineering from Shanghai Jiaotong University, China,
in 1996, and the M.S. degree in electrical engineering
from the University of Texas at Austin in 1998. He is currently a Ph.D.
candidate at the University of Texas at Austin. His research focuses on
wideband wireless and MIMO wireless communications. The research efforts
include modeling and prediction of communication channels, antenna array
processing, statistical signal processing, blind equalization and applied
electromagnetics.
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://signal.ece.utexas.edu/seminars