Fast synchronization method for CDMA communication systems

David Burshtein, Doron Rainish, Shlomo Shamai, David Ben-Eli

Research output: Contribution to journalArticlepeer-review

Abstract

The synchronization phase of a code division multiple access communication system might pose a limitation on the performance of the system, since unlike other communication systems it is required to obtain the state (i.e., sequence phase) of a linear feedback shift register (LFSR). Usually the state is obtained by using a brute force exhaustive search over all possibilities, which might be a computationally demanding task. In this paper, we suggest a new method for LFSR sequence phase acquisition. Our method is suitable for practical systems in which an unknown frequency drift may be present. Simulation results for the IS-95/CDMA-2000 standard show a dramatic reduction in the time required to acquire synchronization when using the new algorithm compared to the standard synchronization method.

Original languageEnglish
Pages (from-to)2396-2405
Number of pages10
JournalIEEE Journal on Selected Areas in Communications
Volume19
Issue number12
DOIs
StatePublished - Dec 2001

Keywords

  • Code division multiple access (CDMA)
  • Soft decoding
  • Synchronization

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