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Adaptive channel estimation in DS-CDMA systems

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Authors
Choi, Ji-Woong; Lee, Yong-Hwan
Issue Date
2004-02-01
Publisher
Electrical Engineering/Electronics, Computer, Communications and Information Technology Association (ECTI)
Citation
ECTI TRANSACTIONS on Electrical Eng., Electronics, and Communications, vol. 2, no. 1, pp. 1-10, February 2004
Keywords
channel estimation filter
Abstract
The accuracy of channel estimation (CE) significantly
affects the performance of the coherent rake receiver
in DS-CDMA systems. It is desirable to employ
a CE scheme that can provide good estimation performance
and fast tracking the channel fading with
reduced complexity. Such a CE scheme needs to employ
a so-called channel estimation filter (CEF) that
can effectively reduce the noise effect according to the
channel condition. In this paper, we consider the use
of adaptive channel estimators that employ a moving
average (MA) FIR filter as the CEF. Numerical
results show that the use of adaptive MA FIR CEF
for pilot based and hybrid CE schemes can provide a
performance similar to the use of Wiener CEF, while
significantly reducing the implementation complexity.
ISSN
1685-9545
Language
English
URI
http://hdl.handle.net/10371/6765
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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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