A Study on Combination of Code and Frequency Division Multiple Access for SS

  • Wu Jianming
    Division of Elec.and Comp.Engineering,Faculty of Engineering, Yokohama National University
  • Kohno Ryuji
    Division of Elec.and Comp.Engineering,Faculty of Engineering, Yokohama National University

Bibliographic Information

Other Title
  • DS/CDMAとFDMAの併用による多元接続方式の最適化に関する一検討

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Description

Many methods combining CDMA and FDMA have been proposed￡1!.This paper,proposes and investigates overlapped CFDMA(Code Frequency Division Multiple Access) in which total frequency band is divided in to subbands and multiusers communicate wiht CDMA in every subband.By this way,we discuss optimization of the overlapped CFDMA.We direct theoretically that there exists the optimal combination between the number of subbands and the overlapped bandwidth.The optimal designs are derived for channels with only AWGN and with narrow band intrference as well.It is confirmed that the optimal overlapped CFDMA can improve frequency efficiency about two times greater than CDMA in either known or unknown narrow band interference.

Journal

  • Technical report of IEICE. SST

    Technical report of IEICE. SST 93 (538), 13-18, 1994-03-24

    The Institute of Electronics, Information and Communication Engineers

Keywords

Details 詳細情報について

  • CRID
    1574231877152198656
  • NII Article ID
    110003289339
  • NII Book ID
    AN10345990
  • ISSN
    09135685
  • Text Lang
    ja
  • Data Source
    • CiNii Articles

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