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- W2128592253 abstract "The propose differential space time block codes (STBC) using quadrature amplitude modulation (QAM), which can not be utilized in the conventional differential STBC. Since QAM constellations have a larger minimum distance compared with phase shift keying (PSK), the proposed method has the advantage of SNR gain compared with conventional differential STBC. The QAM signals are encoded in a manner similar to that of conventional differential STBCs. To decode QAM signals, the signals received are normalized by the channel power estimated forgoing training symbols, and then decoded with a conventional QAM decoder. When the transmission rate is more than 3 bits/channel use in time varying channels, the simulation results demonstrate that the proposed method with the channel power estimation outperforms the conventional differential STBC." @default.
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- W2128592253 date "2004-07-08" @default.
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- W2128592253 title "Differential space time block codes using QAM constellations" @default.
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- W2128592253 doi "https://doi.org/10.1109/pimrc.2003.1260403" @default.
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