Stochastic Method of Determining Substream Modulation Levels for MIMO Eigenbeam Space Division Multiplexing
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概要
- 論文の詳細を見る
Multiple-input multiple-output (MIMO) eigenbeam space division multiplexing that uses adaptive modulations for substreams is a promising technology for improving transmission capacity. A fundamental drawback of this approach is that the modulation levels determined from the carrier-to-noise ratio at each substream are sometimes overly optimistic so the use of these modulation levels results in transmission errors and diminished transmission performance. A novel method of determining substream modulation levels is proposed that alleviates this degradation. In the proposed method, the expected bit error rates for possible modulations of each substream are calculated from delay profiles. Simulation results indicate that transmission capacity is improved by 30% using the new method compared with the conventional method.
- 社団法人電子情報通信学会の論文
- 2006-01-01
著者
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HARADA Hiroshi
National Institute of Information and Communications Technology (NICT)
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Harada H
National Inst. Of Information And Communications Technol. (nict) Kanagawa Jpn
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Ahn C‐j
National Institute Of Information And Communications Technology
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AHN Chang-Jun
National Institute of Information and Communication Technology (NICT), Incorporated Administrative A
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TAKAHASHI Satoshi
National Institute of Information and Communications Technology
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Ahn Chang-jun
Atr Wave Engineering Laboratories
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Ahn Chang-jun
National Institute Of Information And Communication Technology (nict)
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Ahn Chang‐jun
Hiroshima City Univ. Hiroshima‐shi Jpn
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Changjun An
Graduate School Of Engineering Chiba University
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Harada Hiroshi
National Inst. Of Information And Communications Technol. (nict) Kanagawa Jpn
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Takahashi Satoshi
National Institute Of Information And Communications Technology:(present Address)faculty Of Informat
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Harada Hiroshi
New Generation Wireless Communications Research Center National Institute Of Information And Communi
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Ahn C‐j
National Institute Of Information And Communication Technology (nict) Incorporated Administrative Ag
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Harada Hiroshi
National Insitute Of Information And Communication Technology
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