QoS evaluation of VoIP end-points. - Wenyu Jiang; Kazuumi Koguchi; Henning Schulzrinne (ICC, 2003)

Elastic and green optical access based upon coherent interleaved frequency division multiple access (IFDMA). - Ken-ichi Kitayama; Yuki Yoshida; Akihiro Maruta; Kenji Ishii; Yuji Akiyama; Masaki Noda; Kazuumi Koguchi; Masamichi Nogami; Kiyoshi Onohara; Takashi Mizuochi (OFC/NFOEC, 2013)

Implementation of Power-Efficient ONU for Elastic-Bandwidth IFDMA-PON Uplink by Employing Polar-Coordinate Transformed PSK Mapping [Invited]. - Kenji Ishii; Kiyoshi Onohara; Yuji Akiyama; Masaki Noda; Masamichi Nogami; Kazuumi Koguchi; Yuki Yoshida; Akihiro Maruta; Takashi Mizuochi; Ken-ichi Kitayama (JOCN, 2013)

3×ONU no-guard-band coherent OFDMA-PON uplink over 40km SMF link using real-time IFDMA transmitter with free-running 100kHz linewidth source. - Yuki Yoshida; Akihiro Maruta; Kenji Ishii; Kiyoshi Onohara; Yuji Akiyama; Masaki Noda; Masamichi Nogami; Kazuumi Koguchi; Takashi Mizuochi; Ken-ichi Kitayama (ECOC, 2014)