Downlink DSTBC-WCDMA in a Fast Time-Dispersive Channel. - Edwin M. Umali; Yasushi Yamao (ISWCS, 2007)

Power Efficiency of OFDM Signal Amplification with Doherty and Extended Doherty Transmitters. - Yasushi Yamao; Yoshikazu Toyama; Edwin M. Umali (EW, 2008)

Power Spectral Analysis of the Envelope Pulse-Width Modulation (EPWM) Transmitter for High Efficiency Amplification of OFDM Signals. - Edwin M. Umali; Yoshikazu Toyama; Yasushi Yamao (VTC Spring, 2008)

Effects of Quantization Noise and Distortion in EPWM Transmitters for OFDM Signal Amplification. - Edwin M. Umali; Koji Kawazoe; Yoshikazu Toyama; Yasushi Yamao (VTC Spring, 2009)

Performance of Downlink DSTBC-WCDMA in Fast-Varying Time-Dispersive Channels. - Edwin M. Umali; Joel Joseph S. Marciano Jr.; Yasushi Yamao (IEICE Trans. Commun., 2009)

Quantization Noise Suppression for Envelope Pulse-Width Modulation (EPWM) Transmitters. - Edwin M. Umali; Shinsuke Yokozawa; Yasushi Yamao (VTC Fall, 2010)

Quantization Noise and Distortion Analysis of Envelope Pulse-Width Modulation (EPWM) Transmitters for OFDM Signal Amplification. - Edwin M. Umali; Koji Kawazoe; Yasushi Yamao (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2010)