A Sign Selection Method of Orthogonal Variable Spreading Factor Code for Peak Power Reduction in Multi-Rate OFCDM Systems(Wireless Communication Technologies)
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概要
- 論文の詳細を見る
In this paper, we propose a novel peak-to-average power ratio (PAPR) reduction method for multi-rate orthogonal frequency division multiplexing (OFCDM) based on an orthogonal variable spreading factor (OVSF) code. In the method, the base station assigns two signs of code sequence to each user to maintain the orthogonality among the code sequences that have different lengths. After that, one sign of the code sequence is selected for reducing the PAPR of the OFCDM symbol. Based on theoretical analysis and computer simulation, we show that the proposed method reduces the PAPR for two data rate classes.
- 社団法人電子情報通信学会の論文
- 2006-04-01
著者
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Ohtsuki T
Faculty Of Science And Technology Keio University
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TAKYU Osamu
Faculty of Science and Technology, Keio University
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OHTSUKI Tomoaki
Faculty of Science and Technology, Keio University
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NAKAGAWA Masao
Faculty of Science and Technology, Keio University
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Takyu Osamu
Tokyo Univ. Sci. Noda‐shi Jpn
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Takyu Osamu
Faculty Of Science And Technology Keio University
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Ohtsuki Tomoaki
Faculty Of Science And Technology Keio University
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Nakagawa Masao
Faculty Of Science And Technology Keio University
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Nakagawa Masao
Faculty Of Agriculture The University Of Tokyo
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TAKYU Osamu
Faculty of Engineering, Shinshu University
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