IEICE Transactions on Communications
Online ISSN : 1745-1345
Print ISSN : 0916-8516
Special Section on Radio Access Techniques for 3G Evolution
Adaptive Modulation and Code Channel Elimination for Vector Coding System
Daisuke TAKEDAMasao NAKAGAWA
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2009 Volume E92.B Issue 5 Pages 1538-1545

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Abstract

Vector coding (VC) is a kind of eigen mode transmission scheme which is typically considered in MIMO systems. In VC systems, several code channels corresponding to the eigenvalues of the channel matrix are created. However, any code channels with low eigenvalues will cause a degradation in performance. In this paper, adaptive modulation and coding (AMC) for a VC system is proposed. In addition to AMC, the number of code channels is adaptively changed by code channel elimination. We show that the BER performance of VC is better than that of MMSE. Secondly, we also show the throughput performance of the proposed scheme is improved compared with the maximum throughput of each individual MCS.

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© 2009 The Institute of Electronics, Information and Communication Engineers
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