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A Study on Combination of Code and Frequency Division Multiple Access for SS
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- Wu Jianming
- Division of Elec.and Comp.Engineering,Faculty of Engineering, Yokohama National University
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- Kohno Ryuji
- Division of Elec.and Comp.Engineering,Faculty of Engineering, Yokohama National University
Bibliographic Information
- Other Title
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- 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
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- Technical report of IEICE. SST
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Technical report of IEICE. SST 93 (538), 13-18, 1994-03-24
The Institute of Electronics, Information and Communication Engineers
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Keywords
Details 詳細情報について
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- CRID
- 1574231877152198656
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- NII Article ID
- 110003289339
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- NII Book ID
- AN10345990
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- ISSN
- 09135685
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- Text Lang
- ja
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- Data Source
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- CiNii Articles