Event Details
Some Issues in Orthogonal Frequency Division Multiplexing (OFDM) Systems and Adaptive Automatic Repeat Request (ARQ) Schemes
Presenter: Hlaing Minn
Supervisor:
Date: Tue, November 6, 2001
Time: 10:30:00 - 11:30:00
Place: EOW 230
ABSTRACT
Abstract:
Through the developments of first generation (1G) in 1980's and second generation (2G) in 1990's, the wireless communication has recently entered into its third generation (3G). Research focuses are now on further improvement on 3G systems and issues for the beyond-3G systems.
One of the major challenges for those 3G and beyond-3G systems is to establish a reliable wireless communication link with a sufficiently high data rate in a hostile wireless radio channel environment.
There are two main issues namely high data rate transmission and reliability. Regarding high data rate transmission, orthogonal frequency division multiplexing (OFDM) has emerged as a favored technique and has been adopted in ADSL, DAB, DVB, IEEE 802.11a, HiperLAN/2, MMAC, IEEE 802.16a/b. Regarding reliability issue, automatic repeat request techniques (ARQ) have to be incorporated in the system design. Recently, adaptive ARQ schemes have achieved much attention due to the large potential performance gain in time-varying channel environments. We will discuss several research issues in OFDM and adaptive ARQ schemes and present some solutions to them.
For further information, please contact:
Hlaing Minn
Ph.D. Candidate
Department of Electrical and Computer Engineering
University of Victoria
PO Box 3055 STN CSC
Victoria, BC
V8W 3P6
Tel: (250) 721-6043
E-mail: hminn@ece.uvic.ca