High-Definition IPTV Broadcasting Architecture Over Gigabit-Capable Passive Optical Network. - Hiroki Ikeda; Jun Sugawa; Yoshihiro Ashi; Kenichi Sakamoto (GLOBECOM, 2007)

Architecture and Design of IP Broadcasting System Using Passive Optical Network. - Hiroki Ikeda; Jun Sugawa; Yoshihiro Ashi; Kenichi Sakamoto (IEICE Trans. Commun., 2008)

Design and Evaluation of 10 Gbps Optical Access System Using Optical Switches. - Koji Wakayama; Michitaka Okuno; Jun Sugawa; Daisuke Mashimo; Hiroki Ikeda; Kenichi Sakamoto (IEICE Trans. Commun., 2010)

Service-Transport Separated Network Architecture Using MPLS-TP Technologies. - Kenichi Sakamoto; Yoshihiro Ashi; Akihiko Takase (IEICE Trans. Commun., 2012)