Orthogonal Set of Huffman Sequences and Its Application to Suppressed-Interference Quasi-Synchronous CDMA System*This paper was presented at the Second International Workshop on Sequence Design and Applications in Communications (IWSDA'05), in Shimonoseki, Japan, during October 10--14, 2005.

  • Authors:
  • Yoshihiro Tanada

  • Affiliations:
  • The author is with the Graduate School of Science and Engineering, Yamaguchi University, Ube-shi, 755-8611 Japan. E-mail: tanada@yamaguchi-u.ac.jp

  • Venue:
  • IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
  • Year:
  • 2006

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Abstract

A Huffman sequence has a zero-sidelobe aperiodic autocorrelation function except at both shift ends. This paper presents orthogonal sets of the zero correlation zone (ZCZ) Huffman sequences and the application to a quasi-synchronous CDMA system with interferences suppressed. The sequences with low or large peak values are constructed on the basis of sequence spectra corresponding to multiple convolution of elementary sequences, and include the ZCZ sequences. The CDMA system is constructed from the ZCZ sequences, and suppresses intersymbol and interchannel interferences.