WPMC2009 Keynote Speech


Mr. Charley K. Watanabe

DirectorRadio Policy Division, Radio Department, Telecommunications Bureau (TB),
Ministry of Internal Affairs and Communications (MIC)

“Outlook and Issue of Radio Use in the 2010s
-Strategy for creating new radio industry-“



With the dramatic increases in the quality and quantity of radio wave use, the appearance of new systems, services and radio wave use in such new fields as “the crashless car” and “the cordless household appliance” are anticipated.

In addition, the realization and spread of new radio wave use systems is expected to contribute to the solutions of social problems in Japan. With these advances in mind, the outlook and issues of radio wave use in the 2010s will be discussed together with a focus on international trends and the progress being made in radio use technologies.


1984 Graduate of Keio University Majored in Electronic Engineering with a Bachelor Degree
1984 Joined the Ministry of Posts and Telecommunications
2001 Director of Research & Development Office in Information & Communications Policy Bureau, MIC
2003 Executive Director for Strategic Planning, in Communications Research Laboratory
2004 Managing Director for Strategic Planning in National Institute of Information & Communications Technology
2005 Director of Telecommunication Systems Division, TB, MIC
2007 Director of Land Mobile Communications Division, TB, MIC
2008-present Director of Radio Policy Division, TB, MIC

Dr. Erik Dahlman


Senior Expert
Radio Access Technologies
Ericsson Research
Ericsson AB, Sweden

“Mobile Broadband – HSPA, LTE, and LTE-Advanced”


Mobile Broadband based on HSPA is now expanding rapidly all over the world with, as of June 2009, more than 128 million HSPA subscribers in 245 networks supporting data rates up to 21 Mbps. In parallel, initial deployment of the next major technology step, 3GPP LTE, is ramping up with commercial operation of the first LTE networks expected in late 2009 or early 2010. Work has also begun on the further evolution of LTE, sometimes referred to as “LTE-Advanced”, further boosting the LTE performance and service capabilities and ensuring full compliance of LTE radio access with the targets defined by ITU for so-called IMT-Advanced access.

This talk will focus on the status of Mobile Broadband from a technology, deployment, and market-situation point-of-view. It will high-light the current status of the HSPA and LTE radio-access technologies, with special focus on the capabilities provided by these radio-access technologies. It will also discuss the technology components currently considered by 3GPP for the evolution of LTE towards “LTE-Advanced” and the compliance of the LTE/LTE-Advanced radio access in relation to the IMT-Advanced requirements.


Erik Dahlman received the Master of Science degree and Doctor of Technology degree from the Royal Institute of Technology, Stockholm in 1987 and 1992 respectively. He is currently the Senior Expert in Radio Access Technologies within Ericsson Research.
Erik Dahlman was deeply involved in the development and standardization of 3G radio access technologies, first in Japan and later within the global 3GPP standardization body. More recently he has been involved in the standardization/development of the 3GPP Long Term Evolution (LTE) and its further evolution into LTE-Advanced. He is currently part of the Ericsson Research Management team with responsibility for long-term strategies in the area of radio-access technologies.
Erik Dahlman is the co-author of the book 3G Evolution – HSPA and LTE for Mobile Broadband. He has also participated in three other books within the area of radio communication, as well as numerous journal papers and conference contributions.
Erik Dahlman holds more than 75 patents in the area of mobile-radio communication.

Dr. Andreas F. Molisch

Head, Wireless Devices and Systems (WiDeS) Group
Department of Electrical Engineering, Viterbi School of Engineering
University of Southern California, USA

“Multi-user MIMO and Base Station Cooperation”


Multiple-input – multiple-output (MIMO) systems are the method of choice for increasing spectral efficiency for fourth-generation wireless communications systems such as 3GPP-LTE, Wimax, and high-throughput WiFi (IEEE 802.11n). It has been shown that for a single link, the capacity increases linearly with the number of antenna elements at transmitter and receiver. However, in a cellular setting, new effects come into play.

First, multiple users are present within one cell, which enables a tradeoff between increasing the data rate for a single user vs. communicating with multiple users at the same time. The talk will discuss methods to optimize overall throughput, as well as considerations for fairness between the users, and methods for reducing feedback overhead.

Secondly, interference from neighboring cells tends to limit the capacity. The talk will thus discuss base station cooperation, where multi-antenna base stations cooperate for communications with users in multiple cells, has the potential to eliminate this bottleneck and recover the full potential of MIMO communications also in a cellular setting. A discussion of propagation channel aspects relevant for multi-user MIMO and BS cooperation will round off the talk.


Andreas F. Molisch is Professor of Electrical Engineering and Head of the Wireless Devices and Systems (WiDeS) Group at the University of Southern California, Los Angeles, CA, USA. Previously, he was with AT&T (Bell) Laboratories Research (USA), Mitsubishi Electric Research Labs, (USA), TU Vienna (Austria), and Lund University (Sweden).

His current research interests are measurement and modeling of mobile radio channels, UWB, cooperative communications, and MIMO systems. He has authored, co-authored or edited four books (among them the textbook “Wireless Communications”), eleven book chapters, more than 120 journal papers, and numerous conference contributions, as well as more than 70 patents and 60 standards contributions. He has been an editor of a number of journals and special issues, General Chair, TPC Chair, or Symposium Chair of multiple international conferences, and chairman of various international standardization groups. He is a Fellow of the IEEE, a Fellow of the IET, and recipient of several awards.

Mr. Seizo Onoe

Senior Vice President and Managing Director of R&D Strategy Department

“Network Deployment Scenario and Promising Services for LTE and IMT-Advanced”


At the end of June 2009, the number of subscribers for mobile cellular communications exceeded 108 million in Japan. Moreover, 94% of them are 3G subscribers (70% of the 3G subscribers are W-CDMA (Wideband-Code Division Multiple Access) subscribers including HSPA (High-Speed Packet Access)). According to the prevailingness of 3G deployment, mobile user equipment (UE) is evolving beyond mere communication tools and the amount of packet data traffic is increasing remarkably. Hence, as a promising radio access system to provide rich broadband services, the radio interface specification of the 3G Long-Term Evolution (LTE), which is called 3.9G, was developed. LTE can provide high-speed broadband services. In July 2007, NTT DOCOMO initiated extensive field experiments to verify a feasible radio interface of the LTE. These experiments exhibited superior system performance including high data rates and low transmission delays, aiming at the launch of commercial service in 2010 as one of the first groups in the world. In parallel with the LTE, the standardization of IMT (International Mobile Telecommunications)-Advanced, which is considered as a 4G system, has been initiated in the ITU-R aiming at completion of the radio interface specifications by 2011.

In my presentation, after a brief introduction of the trends in the current mobile communications market in Japan, I will present the concept of the 3G evolution and migration scenarios from the existing 3G systems to LTE. I will also explain our views on promising services offered through the LTE. Finally, I will describe the views on future migration scenarios to the 4G system, i.e., IMT-Advanced, from an operator’s viewpoint.


Seizo Onoe received his B.E. and M.E. degrees in electronic engineering from Kyoto University, Japan, in 1980 and 1982, respectively. He joined NTT Laboratories in 1982. In 1992, he transferred to NTT DOCOMO, INC. He has been engaged in the research and development of analog cellular systems, the digital cellular system in Japan called the PDC (Personal Digital Cellular) system, 3G systems including W-CDMA (Wideband-Code Division Multiple Access), HSPA (High-Speed Packet Access), LTE (Long-Term Evolution), and the 4G system, i.e., IMT-Advanced. He was appointed Managing Director of the Radio Network Development Department in 2002. He is now Senior Vice President and Managing Director of the R&D Strategy Department and is working on the management of the research and development of radio access networks, core networks, consumer devices, and mobile communication services. He has assumed the role of chairman of the IMT-Advanced Subcommittee in ARIB (The Association of Radio Industries and Businesses) since April 2006. He has also been serving as Vice President of the Communication Society in the IEICE since May 2009.


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