PAPR Reduction Method for OFDM Signal by Using Dummy Sub-carriers (2008)
Pisit Boonsrimuang, Arjin Numsomran, Tawil Paungma, Hideo Kobayashi
Abstract — One of the disadvantages of using OFDM is the larger peak to averaged power ratio (PAPR) in its time domain signal. The larger PAPR signal would course the fatal degradation of bit error...
Yamada, Yuma, Akita, Hidetaka, Kamiya, Hiroyuki, Kogure, Kentaro, Yamamoto, Takenori, Shinohara, Yasuo, ...
Mitochondria are the principal producers of energy in higher cells. Mitochondrial dysfunction is implicated in a variety of human diseases, including cancer and neurodegenerative disorders. Effective...
MORI, Kazuo, NAITO, Katsuhiro, KOBAYASHI, Hideo
This paper proposes an asymmetric traffic accommodation scheme using a multihop transmission technique for CDMA/FDD cellular communication systems. The proposed scheme exploits the multihop...
MKRTCHYAN, Gagik, NAITO, Katsuhiro, MORI, Kazuo, KOBAYASHI, Hideo
Multi-carrier code division multiple access (MC-CDMA) has been considered as one of the promising techniques for the next generation of mobile communication systems because of its efficient bandwidth...
Proposal of Simple PAPR Reduction Method for OFDM Signal by Using Dummy Sub-Carriers (2008)
BOONSRIMUANG, Pisit, MORI, Kazuo, PAUNGMA, Tawil, KOBAYASHI, Hideo
One of the disadvantages of using OFDM is the larger peak to averaged power ratio (PAPR) in its time domain signal as compared with the conventional single carrier modulation method. The larger PAPR...
MORI, Kazuo, NAITO, Katsuhiro, KOBAYASHI, Hideo, AGHVAMI, Hamid
The traffic with asymmetry between uplink and downlink has recently been getting remarkable on mobile communication systems providing multimedia communication services. In the future mobile...
KHUMSI, Abubaker, MORI, Kazuo, NAITO, Katsuhiro, KOBAYASHI, Hideo, AGHVAMI, Hamid
In this letter we investigated the packet transmission control in downlink CDMA cellular systems. The downlink packet transmission control scheme based on the soft handoff status was proposed to...
BOONSRIMUANG, Pisit, NAITO, Katsuhiro, MORI, Kazuo, PAUNGMA, Tawil, KOBAYASHI, Hideo
The main disadvantage of orthogonal frequency division multiplexing (OFDM) is the high time domain PAPR. The larger PAPR signal would fatally degrade BER performance in non-linear channels. This...
Imperial Japan and Total War System (2006)
Copyright (c) Center of Excellence-Contemporary Asian Studies
Complexity Reduced Maximum Likelihood Detection for SDM-OFDM System (2006)
TENG, Yuanrun, NAITO, Katsuhiro, MORI, Kazuo, KOBAYASHI, Hideo
This paper proposes two complexity reduced Maximum Likelihood Detection (MLD) methods for Space Division Multiplexing—OFDM (SDM-OFDM) system to exploit the spatial diversity so as to achieve the...
MKRTCHYAN, Gagik, NAITO, Katsuhiro, MORI, Kazuo, KOBAYASHI, Hideo
Many applications of OFDM systems require Doppler spread estimation. This is quite difficult in multi-path fading channels with no strong direct path. This letter proposes a novel Doppler spread...
MKRTCHYAN, Gagik, NAITO, Katsuhiro, MORI, Kazuo, KOBAYASHI, Hideo
Software defined radio, which uses reconfigurable signal processing devices, requires the determination of multiple unknown parameters to realize the potential capabilities of adaptive communication....
MKRTCHYAN, Gagik, MORI, Kazuo, KOBAYASHI, Hideo
This paper analyzes the immediate cause of the ICI in OFDM systems due to the Doppler spread and carrier frequency offset. As shown, ICI occurs because of the using DFT (FFT) and IDFT (IFFT) for...
BOONSRIMUANG, Pisit, MORI, Kazuo, PAUNGMA, Tawil, KOBAYASHI, Hideo
One of the disadvantages of using OFDM is the larger peak to averaged power ratio (PAPR) of the time domain signal as compared with the conventional single carrier transmission method. The OFDM...
KOBAYASHI, Yukinari, MORI, Kazuo, KOBAYASHI, Hideo
The shared time division multiplexing (shared-TDD) scheme has been proposed to accommodate asymmetric communications between uplink and downlink. The accommodation of connection-less services in...
Ohya, Shinobu, Kobayashi, Hideo, Tanaka, Masaaki
We have studied magnetic properties of heavily Mn-doped [(In0.44Ga0.56)0.79Mn0.21]As thin films grown by low-temperature molecular-beam epitaxy (LT-MBE) on InP substrates. The (InGaMn)As with high Mn...
Tsuchiya, Satoshi, Ohe, Yuichiro, Sugiura, Takahiko, Fuwa, Nobukazu, Kitamoto, Yoshizumi, Mori, Kiyoshi, ...
Background: We attempted dose escalation of standard-fractionated and accelerated-hyperfractionated radiotherapy combined with concurrent cisplatin and vindesine to improve local control and survival...
Strength Evaluation of Ceramic-Metal Joints. (1998)
Kobayashi, Hideo, Arai, Yoshio, Nakamura, Haruo, Sato, Takuya
Four-point bending tests were conducted for si3n4-s45c and si3n4s45c-si3n4 joint smooth and precracked specimens. analytical studies on joining residual stresses were also performed by the finite...
Micromechanism and Delamination Resistance of CF/PEEK. (1996)
Todoroki, Akira, Kobayashi, Hideo, Lee, Jong G.
CF/PEEK composite plates have high delamination resistance because of the high fracture toughness of PEEK. Several studies have been conducted to obtain the delamination resistance. Few delamination...
Effects of antihypertensive drugs on heart and resistance vessels (1990)
Kobayashi, Hideo, Sano, Toshio, Tarazi, Robert C, Fouad-Tarazi, Fetnat M
Study objective – The aim of the study was to examine the effects of antihypertensive drugs on heart and resistance vessels to see whether regression of peripheral vascular hypertrophy accompanies...
KOBAYASHI, HIDEO, SMITH, CHARLES E, FOUAD-TARAZI, FETNAT M, WICKER, PIERRE, ESTAFANOUS, GEORGE F
This study evaluated the haemodynamic response to different degrees of acute normovolaemic haemodilution with hetastarch at rest and during preload and afterload stress in 123 anaesthetised...
Shinkai, Masaharu, Tamaoki, Jun, Kobayashi, Hideo, Kanoh, Soichiro, Motoyoshi, Kazuo, Kute, Tim, ...
The nonsteroidal anti-inflammatory drugs have been shown to support cytoprotection of cells by shifting cells toward a quiescent state (G0/G1). Extracellular signal-regulated kinase (ERK) is required...
Shinkai, Masaharu, Tamaoki, Jun, Kobayashi, Hideo, Kanoh, Soichiro, Motoyoshi, Kazuo, Kute, Tim, ...
The nonsteroidal anti-inflammatory drugs have been shown to support cytoprotection of cells by shifting cells toward a quiescent state (G0/G1). Extracellular signal-regulated kinase (ERK) is required...
特発性低髄液圧症候群の1例 : ミエログラム, CTM, MRIの特徴的所見
銅冶, 英雄, 三枝, 修, 斎藤, 正仁, 喜多, 恒次, 小泉, 渉, 小林, 照久, ...
特発性低髄液圧症候群の1例を経験したので報告する。症例は28歳女性, 誘因なく頭痛, 頚背部痛が出現し入院となった。髄液検査では髄液圧の低下,...
特発性低髄液圧症候群の1例 : ミエログラム, CTM, MRIの特徴的所見
銅冶, 英雄, 三枝, 修, 斎藤, 正仁, 喜多, 恒次, 小泉, 渉, 小林, 照久, ...
特発性低髄液圧症候群の1例を経験したので報告する。症例は28歳女性, 誘因なく頭痛, 頚背部痛が出現し入院となった。髄液検査では髄液圧の低下,...
Molecular Identification of Bacteria from Aseptically Loose Implants
Kobayashi, Naomi, Procop, Gary W., Krebs, Viktor, Kobayashi, Hideo, Bauer, Thomas W.
Polymerase chain reaction (PCR) assays have been used to detect bacteria adherent to failed orthopaedic implants, but some PCR assays have had problems with probable false-positive results. We used a...