QPSK Impulse Signal Transmission for Ultra Wide Band Communication Systems in Multipath Channel Environments(<Special Section>Wide Band Systems)
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概要
- 論文の詳細を見る
In this paper, three new ultra wideband (UWB) communication systems with quadrature-phase shift keying (QPSK) impulse modulation are proposed. First, direct-sequence (DS) multiple-access scheme is applied. The second proposed system is based on time-hopping (TH) multiple-access scheme. The last proposed system applies TH multiple-access scheme with QPSK impulse modulation and pulse position modulation (PPM). The conventional UWB communications as TH scheme with PPM modulation and DS scheme with binary-phase shift keying (BPSK) are used to compare. The simulation results show that all proposed UWB communication systems can provide obviously better performances compared with the conventional TH-PPM and DS-BPSK UWB communication systems. The comparisons in aspects of transmission bit rate and the number of users are also investigated.
- 社団法人電子情報通信学会の論文
- 2005-11-01
著者
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ARAKI Kiyomichi
Graduate School of Science and Engineering, Tokyo Institute of Technology
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Araki Kiyomichi
Graduate School Of Engineering Tokyo Institute Of Technology
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Araki Kiyomichi
Tokyo Inst. Of Technol. Tokyo Jpn
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Benjapolakul Watit
Department of Electrical Engineering, Faculty of Engineering, Chulalongkorn University
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Benjapolakul Watit
Department Of Electrical Engineering Faculty Of Engineering Chulalongkorn University
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Araki Kiyomichi
Graduate School Science And Engineering Tokyo Institute Of Technology
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KHEMAPATAPAN Chaiyaporn
Department of Electrical Engineering, Faculty of Engineering, Chulalongkorn University
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Khemapatapan Chaiyaporn
Department Of Electrical Engineering Faculty Of Engineering Chulalongkorn University
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