• Title/Summary/Keyword: Hadamard matrices

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Cooperative Diversity MIMO System for m with 8 Transmit Antennas (8개 송신 안테나 UWB를 위한 협동 다이버시티 MIMO 시스템)

  • Lee Kwang-Jae;Hou Jia;Lee Moon-Ho;Cho Sam-Goo
    • The Journal of Korean Institute of Electromagnetic Engineering and Science
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    • v.16 no.7 s.98
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    • pp.709-719
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    • 2005
  • The forward link of the 3 G CDMA system may become limited under the increasing of the number of users. The conventional channelization code, Walsh code, has not enough sizes for much possible non, therefore, the quasi orthogonal function(QOF), which process optimal cross-correlation with Walsh code, is considered. In this paper, we investigate quasi orthogonal function on Jacket matrices, which can lead lower correlations values and better performance in 3 G CDMA system. Moreover, to simple the detector and improve the BER performance, a novel detection for QOF CDMA system is proposed. Finally, the simple recursive generation of the bent sequences for QOF mask function is discussed.