Large Code Set for Double User Capacity and Low PAPR Level in Multicarrier Systems
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概要
- 論文の詳細を見る
In this paper, a new large spreading code set with a uniform low cross-correlation is proposed. The proposed code set is capable of (1) increasing the number of assigned user (capacity) in a multicarrier code division multiple access (MC-CDMA) system and (2) reducing the peak-to-average power ratio (PAPR) of an orthogonal frequency division multiplexing (OFDM) system. In this paper, we derive a new code set and present an example to demonstrate performance improvements of OFDM and MC-CDMA systems. Our proposed code set with code length of N has K=2N+1 number of codes for supporting up to (2N+1) users and exhibits lower cross correlation properties compared to the existing spreading code sets. Our results with subcarrier N=16 confirm that the proposed code set outperforms the current pseudo-orthogonal carrier interferometry (POCI) code set with gain of 5 dB at bit-error-rate (BER) level of 10-4 in the additive white Gaussian noise (AWGN) channel and gain of more than 3.6 dB in a multipath fading channel.
- 電子情報通信学会の論文
- 2008-08-01
著者
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Makido S
The School Of Engineering Nagoya University:(present Address)toyota Central R&d Labs. Inc.
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SAITO Masato
Graduate School of Media and Governance, Keio University
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Anwar Khoirul
Graduate School Of Information Science Nara Institute Of Science And Technology (naist)
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Saito Masato
Nara Inst. Of Sci. And Technol. Ikoma‐shi Jpn
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OKADA Minoru
Graduate school of Information Science, Nara Institute of Science and Technology
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Anwar Khoirul
Graduate School Of Information Science Nara Institute Of Science And Technology
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HARA Takao
Nara Institute of Science and Technology
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Hara Takao
Graduate School of Information Science, Nara Institute of Science and Technology
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Okada Minoru
Graduate School Of Information Science Nara Institute Of Science And Technology
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Saito Masato
Graduate School Of Information Science Nara Institute Of Science And Technology
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Hara T
Graduate School Of Information Science Nara Institute Of Science And Technology
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Sawada Manabu
Research Laboratories Denso Corporation:department Of Electrical Engineering And Computer Science Gr
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Okada Minoru
Nara Inst. Of Sci. And Technol. Nara Jpn
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Hara Takao
Graduate School Of Information Science Nara Institute Of Science And Technology
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Okada Minoru
Graduate School Of Information Production And Systems Waseda University
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Hara Takao
Graduate School Of Information Sci. Nara Inst. Of Sci. And Technol.
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