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Use of Multiple Antennas for DS/CDMA Code Acquisition

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Authors
Shin, Oh-Soon; Lee, Kwang Bok
Issue Date
2003-05
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Citation
IEEE Trans. Wireless Commun., vol. 2, pp. 424-430, May 2003
Keywords
Acquisitionantenna arraydirect sequence codedivision multiple-access (DS/CDMA)multiple antennasspatial correlation
Description
Manuscript received August 13, 2001; revised February 19, 2002; accepted
March 6, 2002. The editor coordinating the review of this paper and approving
it for publication is R. A. Valenzuela.
Abstract
A generalized acquisition scheme is proposed for direct
sequence code-division multiple-access systems with multiple
antennas. The proposed scheme employs grouping of multiple antennas
as a means of a tradeoff between two important factors determining
the mean acquisition time, combining gain and search
time. The performance of the proposed acquisition scheme is analyzed
in frequency-selective Rayleigh-fading channels with consideration
of spatial correlations. Numerical results show that the use
of the largest number of antenna groups is preferable to reducing
the mean acquisition time at low signal-to-interference ratio (SIR)
values. At high SIR values, on the contrary, the mean acquisition
time is found to increase in proportion to the number of antenna
groups. In a typical environment, the presence of spatial correlation
is shown to increase or decrease the mean acquisition time
within 50% compared with the uncorrelated fading case.
ISSN
1536-1276
Language
English
URI
http://hdl.handle.net/10371/7509
DOI
https://doi.org/10.1109/TWC.2003.811187
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Electrical and Computer Engineering (전기·정보공학부)Journal Papers (저널논문_전기·정보공학부)
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