Hideshi Murai
Mitsubishi
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Publication
Featured researches published by Hideshi Murai.
personal indoor and mobile radio communications | 1998
Hideshi Murai; Nicolas Voyer; Tadashi Fujino
This paper studies a modulation method for a wideband code division multiple access (W-CDMA) system in order to enhance its performance. The modulation method studied here introduce bi-orthogonal modulation instead of multicode transmission in order to suppress the envelope variation which comes from code division multiplexing in multicode transmission. Bi-orthogonal modulation studied here selects a single code in both in-phase and quadrature components, and leads to relaxation of the requirement of HPA linearity. This relaxation enhances the implementation of the mobile station (MS) with smaller size or lower power consumption. Computer simulation results show that the power level of spurious emission in the adjacent channel is reduced by approximately 8 dB with use of bi-orthogonal modulation, while keeping the required E/sub b//I/sub o/ almost the same as multicode transmission.
Archive | 1998
Hideshi Murai; Hisao Tachika
Archive | 2007
Yasuhiro Yano; Hideshi Murai
Archive | 1991
Hideshi Murai
Archive | 2007
Nicolas Voyer; Yasuhiro Yano; Hideshi Murai
Archive | 1997
Hideshi Murai; Hisao Tachika
Archive | 1994
Hideshi Murai
Archive | 2000
Kazushi Yamamoto; Hideshi Murai; Yasuhiro Yano
Archive | 1995
Hideshi Murai
Archive | 2001
Hideshi Murai; Yasuhiro Yano; 英志 村井; 安宏 矢野
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