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Novel THP Scheme with Minimum Noise Enhancement for Multi-User MIMO Systems Shogo FUJITA Leonardo LANANTE Jr. Yuhei NAGAO Masayuki KUROSAKI Hiroshi OCHI Publication IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Vol.E96-A No.6 pp.1340-1347 Publication Date: 2013/06/01 Online ISSN: 1745-1337 DOI: 10.1587/transfun.E96.A.1340 Print ISSN: 0916-8508 Type of Manuscript: Special Section PAPER (Special Section on Circuit, System, and Computer Technologies) Category: Keyword: multi-user MIMO, non-linear precoding, Tomlinson Harashima precoding, vector perturbation, Full Text: PDF(1.4MB)>>
Summary: 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. | ||||||||||
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