Fast synchronization method for CDMA communication systems

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

doi:10.1109/49.974605

Fast synchronization method for CDMA communication systems

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

^*Corresponding author for this work

School of Electrical Engineering

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

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 language	English
Pages (from-to)	2396-2405
Number of pages	10
Journal	IEEE Journal on Selected Areas in Communications
Volume	19
Issue number	12
DOIs	https://doi.org/10.1109/49.974605
State	Published - Dec 2001

Keywords

Code division multiple access (CDMA)
Soft decoding
Synchronization

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10.1109/49.974605

Cite this

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title = "Fast synchronization method for CDMA communication systems",

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.",

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AU - Shamai, Shlomo

AU - Ben-Eli, David

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N2 - 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.

AB - 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.

KW - Code division multiple access (CDMA)

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Fast synchronization method for CDMA communication systems

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Keywords

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