CS-CDMA/CP with ZCZ Codes from an M-Sequence and Its Performance for Downlink Transmission over a Multipath Fading Channel(Spread Spectrum Technologies and Applications)
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概要
- 論文の詳細を見る
Convolutional spreading CDMA with cyclic prefix (CS-CDMA/CP) is a multiuser interference-free (MUI-free) CDMA scheme proposed for multipath channels based on the convolution between user data and zero correlation zone (ZCZ) code, and its characteristics depend on the employed ZCZ codes. Although ternary ZCZ codes have more sequences than binary ZCZ codes in general, transmitted signal with ternary ZCZ codes give a slightly higher peak-to-average power ratio (PAPR). In this paper we propose the use of periodic ZCZ codes generated from an M-sequence which not only provides the same user capacity as ternary ZCZ codes but allows more design flexibility. Simulation results show that the new ZCZ code shows stronger robustness against an imperfect transmitter with clipping and enjoys better BER performances when used in CS-CDMA/CP compared to the conventional DS-CDMA with MRC-RAKE.
- 社団法人電子情報通信学会の論文
- 2007-06-01
著者
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HASHIMOTO Takeshi
Department of Operative Dentistry, Okayama University Dental School
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HAN Chenggao
Department of Electronic Engineering, Faculty of Electro-Communications, University of Electro-Commu
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Han Chenggao
Dept. Of Electronics Eng. University Of Electro-communications
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Han Chenggao
Department Of Electronic Engineering Faculty Of Electro-communications University Of Electro-communi
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Hashimoto Takeshi
Dept. Of Electronics Eng. University Of Electro-communications
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WEERASINGHE Nalin
Department of Electronics Engineering, The University of Electro-Communications
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Weerasinghe Nalin
Dept. Of Electronics Eng. University Of Electro-communications
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Hashimoto Takeshi
Department Of Bioinformatics Graduate School Of Allied Health Sciences Faculty Of Medicine Osaka University
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Han Chenggao
Department of Communication Engineering and Informatics, University of Electro-Communications
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