Beam-Space Time Coding Exploiting the Overlap among Beampatterns(Communication Systems)(<Special Section>Information Theory and Its Applications)
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概要
- 論文の詳細を見る
Beam-space time coding methods are being extensively investigated, since they provide levels of performance appropriate for the next and future generations of wireless communication systems. In this paper, we focus on beam-domain space-time coding, especially considering the case when transmit beams have inter-beam interference (IBI). A new beam-space time coding scheme that takes into account the overlap amount among beams is proposed. We observe that the overlap of beams introduces an amount of correlation to the channels in a similar way to the well-known Partial Response (PR) channel in magnetic recording. Based on that observation, the proposed system can make use of IBI to encode and decode the signals. We evaluate the proposed system both via theoretical upper bound and via computer simulations. The Bit Error Rate (BER) performance of the proposed system using IBI is better than that of the system with no-IBI because the proposed system delivers more coding gain. However, the overlap of beams decreases the diversity gain. The tradeoff relationship between diversity gain and coding gain is investigated.
- 社団法人電子情報通信学会の論文
- 2003-10-01
著者
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KOHNO Ryuji
The Division of Electrical & Computer Engineering, Yokohama National University
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Abreu Giuseppe
The Division Of Physics Electrical And Computer Engineering Graduate School Of Engineering Yokohama
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Ishii Kouji
The Division Of Physics Electrical And Computer Engineering Graduate School Of Engineering Yokohama
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Kohno Ryuji
The Department Of Electrical And Computer Engineering Yokohama National University
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Kohno Ryuji
The Division Of Physics Electrical And Computer Engineering Graduate School Of Engineering Yokohama
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