Expansion of Modulation for Modulatable Orthogonal Sequences (Special Section on Spread Spectrum Techniques and Applications)

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概要

• 論文の詳細を見る

• Frank and Zadaff had proposed a class of polyphase orthogonal sequences. Now the sequences are called "Frank sequences." Suehiro has proposed a modulation method for Frank sequences. For example, the number of 4-phase orthogonal sequences of period 16 is 32 by Suehiro's method, on the other hand, the number of 4-phase Frank sequences of period 16 is 2. In this paper, the modulation method is expanded again and we prove that the sequences obtained by the proposed method are polyphase orthogonal sequences. Furhtermore, we prove that the number of N-phase orthogonal sequences of period N^2 obtained by the proposed method is N^<N-2>(N - 1)!. As a result of the proposed expansion, the number of 4-phase orthogonal sequences of period 16 is 96.

• 社団法人電子情報通信学会の論文
• 1999-12-25

著者

• Suehiro Naoki

  Institute Of Applied Physics University Of Tsukuba

• Suehiro Naoki

  Institute Of Engineering Mechanics And Systems University Of Tsukuba

• Torii H

  Kanagawa Inst. Technol. Atsugi-shi Jpn

• TORII Hideyuki

  Institute of Engineering Mechanics and Systems, University of Tsukuba

関連論文

• Two Types of Polyphase Sequence Sets for Approximately Synchronized CDMA Systems(Regular Section)
• Ternary ZCZ Sequence Sets for Cellular CDMA Systems
• A Quadriphase Sequence Pair Whose Aperiodic Auto/Cross-Correlation Functions Take Pure Imaginary Values (Special Section on Spread Spectrum Techniques and Applications)
• Expansion of Modulation for Modulatable Orthogonal Sequences (Special Section on Spread Spectrum Techniques and Applications)
• Symmetrical Factorization of Bent Function Type Complex Hadamard Matrices (Special Section on Spread Spectrum Techniques and Applications)

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