MIMO-OFDM Precoding Technique for Minimizing BER Upper Bound of MLD
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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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- HAGIWARA Takashi
- The Institute of Electronics, Information and Communication Engineers
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Abstract
This paper proposes a new MIMO-OFDM precoding technique that aims to minimize a bit error rate (BER) upper bound of the maximum likelihood detection (MLD) in mobile radio communications. Using a steepest descent algorithm, the proposed method estimates linear precoding matrices that can minimize the upper bound of BER under power constraints. Since the upper bound is derived from all the pairwise error probabilities, this method can effectively optimize overall Euclidean distances between signals received by multiple antennas and their replicas. Computer simulations evaluate the BER performance and channel capacity of the proposed scheme for 2×2 and 4×4 MIMO-OFDM systems with BPSK, QPSK, and 16QAM. It is demonstrated that the proposed precoding technique is superior in terms of average BER to conventional precoding methods including a precoder which maximizes only the minimum Euclidean distance as the worst case.
Journal
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- IEICE Transactions on Communications
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IEICE Transactions on Communications E91-B (7), 2287-2298, 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
- 1390001204373382400
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- NII Article ID
- 10026831038
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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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- Data Source
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- JaLC
- Crossref
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed
