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Adaptive channel estimation in DS-CDMA systems
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- Authors
- Issue Date
- 2004-02-01
- 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
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