Channel compensation with virtual pilot signal and time-frequency interferometry for MIMO-OFDM
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- Okamura Masaya
- Graduate School of Engineering, Chiba University
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- Ahn Chang-Jun
- Graduate School of Engineering, Chiba University
抄録
MIMO has been recognized as a promising way to provide high speed data transmission. However, since the number of pilot symbols is proportionally depending on the number of transmit antenna, the total transmission rate of MIMO would be degraded. To solve this problem, the channel estimation method using virtual pilot signal(VPS) with a few pilot signals has been proposed. However, since the conventional method identifies the channel state information(CSI) iteratively, the complexity is a seriously considerable work. Previously, we have proposed the time-frequency interferometry (TFI)-OFDM to achieve a superior BER performance with a small number of pilot symbols without any iterative channel estimation. However, the TFI method is still needed a large number of pilot signals. To mitigate the problem of the TFI method, in this paper, we propose a novel channel compensation method based on VPS and TFI for MIMO without increasing the system complexity. The proposed method has a low complexity with improving BER performance to compare with the conventional method. From the simulation results, the proposed method can achieve the improved BER performance of 1.5dB gain compared with the conventional method for 4×4 and 8×8 MIMO systems.
収録刊行物
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- Nonlinear Theory and Its Applications, IEICE
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Nonlinear Theory and Its Applications, IEICE 9 (1), 82-94, 2018
一般社団法人 電子情報通信学会
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詳細情報 詳細情報について
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- CRID
- 1390282680322112640
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- NII論文ID
- 130006301347
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- ISSN
- 21854106
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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
- Crossref
- CiNii Articles
- KAKEN
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- 抄録ライセンスフラグ
- 使用不可