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Differentially Coherent Combining for Double-Dwell Code Acquisition in DS-CDMA Systems
Cited 20 time in
Web of Science
Cited 34 time in Scopus
- Authors
- Issue Date
- 2003-07
- Citation
- IEEE Trans. Commun., vol. 51, pp. 1046-1050, July 2003
- Keywords
- Acquisition ; differentially coherent combining ; double-dwell search, direct-sequence code-division multiple access(DS-CDMA) ; frequency offset
- Description
- Paper approved by L. Wei, the Editor for Wireless CDMA Systems of the IEEE Communications Society. Manuscript received January 9, 2002; revised June 15, 2002 and December 3, 2002.
This paper was presented in part at the 12th IEEE Symposium on Personal, Indoor, and Mobile Radio Communications, San Diego, CA,
September-October, 2001.
- Abstract
- The use of differentially coherent combining is proposed
to improve the performance of a double-dwell acquisition
system by increasing the reliability of a decision in the verification
stage. The detection and mean acquisition time performance of the
acquisition scheme with the proposed combining scheme is analyzed
in frequency-selective Rayleigh fading channels, and compared
with that of two previously published double-dwell acquisition
schemes based on long correlation intervals and noncoherent
combining. It is shown that the proposed acquisition scheme outperforms
the previous ones, and that the performance improvement
increases as the frequency offset increases.
- ISSN
- 0090-6778
- Language
- English
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