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- W2953204857 abstract "A Quasi-Orthogonal Space-Time Block Code (QO-STBC) is attractive because it achieves higher code rate than Orthogonal STBC and lower decoding complexity than nonorthogonal STBC. In this paper, we first derive the algebraic structure of QO-STBC, then we apply it in a novel graph-based search algorithm to find high-rate QO-STBCs with code rates greater than 1. From the four-antenna codes found using this approach, it is found that the maximum code rate is limited to 5/4 with symbolwise diversity level of four, and 4 with symbolwise diversity level of two. The maximum likelihood decoding of these high-rate QO-STBCs can be performed on two separate sub-groups of symbols. The rate-5/4 codes are the first known QO-STBCs with code rate greater 1 that has full symbolwise diversity level." @default.
- W2953204857 created "2019-06-27" @default.
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- W2953204857 date "2008-06-20" @default.
- W2953204857 modified "2023-09-30" @default.
- W2953204857 title "On the Search for High-Rate Quasi-Orthogonal Space-Time Block Code" @default.
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