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MIMO-OFDM Precoding Technique for Minimizing BER Upper Bound of MLD under Imperfect CSI
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- PITAKDUMRONGKIJA Boonsarn
- Tokyo Institute of Technology
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- FUKAWA Kazuhiko
- Tokyo Institute of Technology The Institute of Electronics, Information and Communication Engineers
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- SUZUKI Hiroshi
- Tokyo Institute of Technology The Institute of Electronics, Information and Communication Engineers
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Description
This paper proposes a new minimum BER (MBER) criterion precoding method that is robust to imperfect channel state information (CSI) for MIMO-OFDM mobile communications. The proposed MBER precoding aims to minimize BER of the maximum likelihood detection (MLD), on the condition that the transmitter can obtain only imperfect CSI owing to channel estimation and quantization errors of the feedback CSI. The proposed scheme controls its precoding parameters under a transmit power constraint by minimizing an upper bound of BER which is derived from the pairwise error probability and averaged with respect to the CSI error. In contrast with a conventional power allocation MBER precoding method that is also robust to the CSI error, the proposed scheme does not make any assumption on the precoding parameters so as to reduce complexity. Thus, it is expected to outperform the conventional scheme at the cost of higher complexity. Computer simulations demonstrate that the proposed precoding method outperforms a conventional nonrobust MBER precoder and the conventional robust power allocation MBER precoding method when the amount of the CSI error is not considerable.
Journal
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- IEICE Transactions on Communications
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IEICE Transactions on Communications E91-B (5), 1490-1501, 2008
The Institute of Electronics, Information and Communication Engineers
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Details 詳細情報について
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- CRID
- 1390282679352315648
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- NII Article ID
- 10026829276
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- NII Book ID
- AA10826261
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- ISSN
- 17451345
- 09168516
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- Text Lang
- en
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- Article Type
- journal article
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
- KAKEN
- OpenAIRE
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- Abstract License Flag
- Disallowed