Novel THP Scheme with Minimum Noise Enhancement for Multi-User MIMO Systems
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概要
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In this paper, we propose a modified Tomlinson Harashima precoding (THP) method with less increase of computational complexity for the multi-user MIMO downlink system. The proposed THP scheme minimizes the influence of noise enhancement at the receivers by placing the diagonal weighted filters at both transmitter side and receiver side with square root. Compared to previously proposed non-linear precoding methods including vector perturbation (VP), the proposed THP achieves high BER performance. Furthermore, we show that the proposed THP method is implemented with lower computational complexity than that of existing modified THP and VP in literature.
著者
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Nagao Yuhei
Department Of Computer Science And Electronics Kyushu Institute Of Technology
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Ochi Hiroshi
Department Of Clinical Bio-regulatory Science Division Of Molecular Medicine For Adult And Geriatric
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Fujita Shogo
Department Of Nephrology Tokyo Medical University Ibaraki Medical Center
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Kurosaki Masayuki
Department Of Computer Science And Electronics Engineering Kyushu Institute Of Technology
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LANANTE Jr.
Department of Computer Science and Electronics, Kyushu Institute of Technology
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OCHI Hiroshi
Department of Computer Science and Electronics, Kyushu Institute of Technology
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FUJITA Shogo
Department of Computer Science and Electronics, Kyushu Institute of Technology
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