Edwin M. UMALI


Quantization Noise and Distortion Analysis of Envelope Pulse-Width Modulation (EPWM) Transmitters for OFDM Signal Amplification
Edwin M. UMALI Koji KAWAZOE Yasushi YAMAO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2010/10/01
Vol. E93-A  No. 10  pp. 1724-1734
Type of Manuscript:  Special Section PAPER (Special Section on Multi-dimensional Mobile Information Networks)
Category: Transmitter Design
Keyword: 
linear transmitterpower efficiencyEPWMOFDMdelta-sigma modulator
 Summary | Full Text:PDF(1.7MB)

Performance of Downlink DSTBC-WCDMA in Fast-Varying Time-Dispersive Channels
Edwin M. UMALI Joel Joseph S. MARCIANO, Jr. Yasushi YAMAO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2009/12/01
Vol. E92-B  No. 12  pp. 3815-3826
Type of Manuscript:  PAPER
Category: Wireless Communication Technologies
Keyword: 
WCDMAMIMODSTBCperformance analysis
 Summary | Full Text:PDF(555.4KB)