Analog Decoding Method for Simplified Short-Range MIMO Transmission
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- KATAOKA Ryochi
- Faculty of Engineering, Niigata University
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- NISHIMORI Kentaro
- Faculty of Engineering, Niigata University
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- HIRAGURI Takefumi
- Department of Electrical and Electronics Engineering, Nippon Institute of Technology
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- HONMA Naoki
- Faculty of Engineering, Iwate University
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- SEKI Tomohiro
- NTT Network Innovation Laboratories, NTT Corporation
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- HIRAGA Ken
- NTT Network Innovation Laboratories, NTT Corporation
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- MAKINO Hideo
- Faculty of Engineering, Niigata University
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抄録
A novel analog decoding method using only 90-degree phase shifters is proposed to simplify the decoding method for short-range multiple-input multiple-output (MIMO) transmission. In a short-range MIMO transmission, an optimal element spacing that maximizes the channel capacity exists for a given transmit distance between the transmitter and receiver. We focus on the fact that the weight matrix by zero forcing (ZF) at the optimal element spacing can be obtained by using dividers and 90-degree phase shifters because it can be expressed by a unitary matrix. The channel capacity by the proposed method is next derived for the evaluation of the exact limitation of the channel capacity. Moreover, it is shown that an optimal weight when using directional antennas can be expressed by using only dividers, 90-degree phase shifters, and attenuators, regardless of the beam width of the directional antenna. Finally, bit error rate and channel capacity evaluations by both simulation and measurement confirm the effectiveness of the proposed method.
収録刊行物
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- IEICE Transactions on Communications
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IEICE Transactions on Communications E97.B (3), 620-630, 2014
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詳細情報 詳細情報について
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- CRID
- 1390001204374306560
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- NII論文ID
- 130003394657
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- NII書誌ID
- AA10826261
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- ISSN
- 17451345
- 09168516
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- HANDLE
- 10191/30686
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- IRDB
- Crossref
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- 使用不可