A Chaos MIMO Transmission Scheme Using Turbo Principle for Secure Channel-Coded Transmission
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- OKAMOTO Eiji
- Department of Computer Science and Engineering, Graduate School of Engineering, Nagoya Institute of Technology
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- INABA Yuma
- Department of Computer Science and Engineering, Graduate School of Engineering, Nagoya Institute of Technology
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抄録
Physical layer security is effective in wireless communications because it makes a transmission secure from the beginning of protocols. We have proposed a chaos multiple-input multiple-output (C-MIMO) transmission scheme that achieves both physical layer security and channel coding gain using chaos signals. C-MIMO is a type of encryption modulation and it obtains the coding gain in conjunction with encryption without a decrease in the transmission efficiency. Thus, the error rate performance is improved in C-MIMO. However, decoding complexity increases exponentially with code length because of the use of maximum likelihood sequence estimation (MLSE), which restricts the code length of C-MIMO and thus the channel coding gain. Therefore, in this paper, we consider outer channel code concatenation instead of code length expansion for C-MIMO, and propose an iterative turbo decoding scheme for performance improvement by introducing a log-likelihood ratio (LLR) into C-MIMO and by utilizing turbo principle. The improved performances of the proposed scheme, compared to the conventional scheme when the outer channel codes are convolutional code and low-density parity check (LDPC) code, are shown by computer simulations.
収録刊行物
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- IEICE Transactions on Communications
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IEICE Transactions on Communications E98.B (8), 1482-1491, 2015
一般社団法人 電子情報通信学会
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詳細情報
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- CRID
- 1390282679351045760
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- NII論文ID
- 130005090348
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- NII書誌ID
- AA11510208
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- ISSN
- 17451345
- 09168516
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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
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