IEICE TRANSACTIONS ON COMMUNICATIONS Editorial Committee Editor-in-Chief Tomonori Aoyama (2003 May-2005 April) Dept. of EE., The University of Tokyo 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8656 Japan Telefax: +81(Japan)-3-5804-3552 E-mail: aoyama@mlab.t.u-tokyo.ac.jp Editors Hiroyuki Arai (2004 May-2006 April) Division of Electric and Computer Engineering Yokohama National University 79-5, Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan Telefax: +81(Japan)-45-338-1157 E-mail: arai@ynu.ac.jp Yukiyoshi Kamio (2004 May-2006 April) Information and Network Systems Department National Institute of Information and Communications Technology(NICT) 4-2-1, Nukui-Kitamchi, Koganei-shi, Tokyo 184-8795, Japan Telefax: +81(Japan)-42-327-7035 E-mail: kamio@nict.go.jp Hiroyuki Morikawa (2003 May-2005 April) Department of Frontier Informatics The University of Tokyo 5-1-5, Kashiwanoha, Kashiwa-shi, Chiba 277-8561 Japan Telefax: +81(Japan)-4-7136-3894 E-mail: mori@mlab.t.u-tokyo.ac.jp Associate Editors Tomoko Adachi Toshiba Corporation Satoru Aikawa NTT Shigehiro Ano KDDI R&D Laboratories, Inc. Yoshinori Arimoto Communications Research Laboratory Kazuhiko Fukawa Tokyo Institute of Technology Hiroshi Furukawa Kyushu University Go Hasegawa Osaka University Jiro Hirokawa Tokyo Institute of Technology Toshikazu Hori Fukui University Shinichi Ichitsubo NTT DoCoMo, Inc. Tsuyoshi Ideguchi Kyushu Tokai University Tetsushi Ikegami Meiji University Masugi Inoue NICT Yutaka Ishibashi Nagoya Institute of Technology Kenji Ishida Hiroshima City University Masafumi Iwamoto Mitsubishi Electric Corporation Shoji Kasahara Nara Institute of Science and Technology Nei Kato Tohoku University Ryoichi Kawada KDDI R&D Laboratories, Inc. Kiyoshi Kobayashi NTT Fujio Kurokawa Nagasaki University Shigeru Kuwano NTT Huan-Bang Li NICT Fumiaki Maehara Waseda University Ichiro Matsuda Tokyo University of Science Yutaka Miyake KDDI R&D Laboratories, Inc. Kazuo Mori Mie University Hikaru Morita NTT Kenichi Nagami INTEC NetCore Inc. Hiroyuki Nakayama Mitsubishi Electric Corporation Shu Namiki The Furukawa Electric Co., Ltd. Shinya Nogami NTT Eiji Okamoto Nagoya Institute of Technology Chikara Ohta Kobe University Tomoaki Ohtsuki Tokyo University of Science Masayuki Oodo NICT Toshihisa Ozawa Komazawa University Yoshiaki Shiraishi Kinki University Hiroki Shoki Toshiba Corporation Takatoshi Sugiyama NTT DoCoMo, Inc. Yasuo Suzuki Tokyo University of Agriculture and Technology Mineo Takai University of California at Los Angeles Yoshinori Tanaka Fujitsu Laboratories Ltd. Makoto Taromaru ATR Shigeru Tomisato Okayama University Hiroshi Toyoizumi The University of Aizu Hiromi Ueda Tokyo University of Technology Hideyuki Uehara Toyohashi University of Technology Shigeo Urushidani NTT Hiroyoshi Yamada Niigata University Ryo Yamaguchi NTT DoCoMo, Inc. Takashi Yamamoto NTT Chung-Huang Yang National Kaohsiung Normal University Takashi Yoshikawa NEC Corporation