Instructors: Patrick Hosein, Srinivasan Balasubramanian and Wanshi Chen, Ericsson Wireless Communications Inc., USA

The wireless communication industry is currently in a state of transition from second generation (2G) to third generation (3G) systems -- a move from circuit-switched, mainly voice services to multi-media services that include voice, packet data and video. The IS-2000 family of standards1 is based upon code division multiple access (CDMA) technology and is one of the defined modes in the International Telecommunication Union (ITU) 3G wireless standard. The early revisions of the CDMA2000 standard support high-speed data transmission (up to 307.2 kbps) using dedicated data channels. The latest revision, Revision D, significantly increases the efficiency of the air interface by introducing high-speed packet data channel support in both the forward (with peak rate of 3.091 Mbps) and reverse (with peak rate of 1.8456 Mbps) link while maintaining backward compatibility with previous revisions. This revision, commonly referred to as 1xEV-DV (for 1xRTT Evolution for high-speed integrated Data and Voice), was completed in March 2004 and submitted to ITU in May 2004 for inclusion in the next revision of its 3G standard.

This tutorial covers a number of key features of 1xEV-DV as standardized in IS-2000 Revision C & D. It will discuss extensively the support for high speed packet data in both the forward (base station to mobile) and reverse (mobile station to base station) link. 1xEV-DV forward link (Rev C) includes the design of the high-speed shared data channel, its components (Hybrid-ARQ, link adaptation, modulation and coding, scheduling, sector-switching, channel supervision, control/hold etc.), MAC, and the effect of mixing data and voice services. The details of how 1xEV-DV exploits channel variation, channel quality feedback and link adaptation to significantly increase the spectral efficiency will be given. 1xEV-DV reverse link (Rev D) includes the design of enhanced reverse link high-speed packet data service, flexible MAC operations, rate control, power control and QoS support. Detail discussions into the enabling technologies and how Rev D exploits these technologies to improve the reverse link average per sector throughput by more than a factor of 2 over that of Rev C will also be presented. The enabling technologies and key features in these standards, and the challenges faced in the implementation will be discussed in detail. The preliminary system simulation performance results will also be shared.

Patrick Hosein attended the Massachusetts Institute of Technology where he obtained five degrees including the Ph.D in Electrical Engineering and Computer Science. He is presently a Senior Staff Engineer at Ericsson Wireless Communications in San Diego. Prior to this he was a Principal Technical Staff Member at AT&T Laboratories in New Jersey. Patrick's present technical interests include the modelling, analysis and simulation of radio resource management algorithms for wireless 3G networks.

Srinivasan Balasubramanian received the B.E. degree in electrical and electronic engineering and MSc in Mathematics from Birla Institute of Technology and Sciences and M.S. in computer science from Clemson University, Clemson, SC. Srinivasan joined Ericsson in 1997 and has been involved in the development of IS95 CDMA2000 systems both as a software developer and systems engineer. He is presently with Ericsson Wireless Communications Inc. in San Diego, CA, where he is a Sr. Staff System Engineer and responsible for 1xEV-DV project development. He participates in the L2 and L3 standardization and also coordinates the IP multimedia related activities of the CDMA2000 air interface protocols. He has several patents pending.

Wanshi Chen received the B.S. degree (with the highest honor) from Southwest Jiaotong University, Chengdu, China, in 1993 and the M.S. degree from the Ohio State University, Columbus, in 2000, both in electrical engineering. He is currently with Ericsson Wireless Communications Inc. in San Diego, CA, where he works on the research and development of CDMA2000 communication systems. He has published numerous journal and conference papers. He is an active reviewer for IEEE transactions. His research interests include communication theory, wireless systems, and digital signal processing.

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