The Third Advanced International Conference on Telecommunications AICT 2007 May 13-19, 2007 - Mauritius

Tutorials

OFDMA towards Next Generation of Wireless Systems

Instructors:

• Uma S. Jha, Ph.D., Director, Qualcomm Inc.
• Prof. fred harris, Professor, San Diego State University

Abstract

Orthogonal Frequency Division Multiplexing (OFDM) has become the modulation method of choice for many fielded and developing wireless communication systems. These systems include including Digital Audio Broadcasting (DAB), Digital Video Broadcasting (DVB), various Local Area Networks (LAN) based communication systems such as 802.11a, 802.11g, 802.11n, the ultra-wide band 802.15, 802.16d, and 802,16e (WiMAX & WiBro) and wire-line systems such as Asynchronous Digital Subscriber Line (ADSL), as well as various Multiple-Input, Multiple-Output (MIMO) systems. OFDM has been selected as the modulation process for these diverse applications because of its high tolerance for induced distortion and for its very efficient use of bandwidth. We will review the structure and performance parameters of standard OFDM signaling schemes including modulation and demodulation, carrier, timing, and sampling clock synchronization, peak to average ratio (PAR) system considerations and control techniques. We will also examine several alternate developing OFDM based structures.

Table of Contents

This tutorial presents state-of-the-art in broadband wireless access technology, this unique resource methodically presents the fundamentals of the OFDM(A) technology - the corner stone of the next generation of the broadband wireless access offerings. In addition the tutorial succinctly depicts the future landscape of mobile broadband wireless access and the standards in particular developed by IEEE 802.16 standards organization.

The tutorial gives practitioners a solid understanding of:

• Basic requirements of Fixed and Mobile Broadband Access Technologies
• Fundamentals of Orthogonal Frequency Division Multiplexing (OFDM) and Orthogonal Frequency Division Multiple Access (OFDMA) schemes
• Essential features of IEEE 802.16d (Fixed) & 802.16e (Mobile) and role of the WiMAX Forum in defining the interoperability and certification criteria
• Important requirements, tradeoffs, and other critical design considerations;
• The key issues and best solutions for various projects in the field.

Target Audience

Practicing Engineers/Scientists; Under Graduate/Under Graduate Students, Marketing, Field/Application Engineers, Wireless Product Developers/Managers and others who want to get an understanding of the subject