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Hybrid Adaptive Channel Estimation in WCDMA Downlink Systems

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dc.contributor.authorChoi, Inho-
dc.contributor.authorLee, Yong-Hwan-
dc.date.accessioned2009-08-25T03:20:14Z-
dc.date.available2009-08-25T03:20:14Z-
dc.date.issued2003-06-
dc.identifier.citationProc. IST Mobile and Wireless Communications Summit, 2003en
dc.identifier.urihttp://www.itrc.ac.ir/ist2003/-
dc.identifier.urihttp://hdl.handle.net/10371/7684-
dc.description.abstractThe receiver performance of DS-CDMA
systems is significantly affected by the accuracy of
channel estimate. In WCDMA downlink systems, the
channel information can be estimated using a common
pilot channel (CPICH). Since this pilot signal is
transmitted to all users in the cell with constant power,
we consider the improvement of channel estimate by
additionally using power-controlled data signal in the
dedicated physical channel (DPCH). Since decision
errors are unavoidable in the DPCH decoding process,
we combine the channel estimate from the CPICH and
DPCH, considering the DPCH data decision error. For
further improvement of channel estimate, we also
employ an adaptive channel estimation filter (CEF).
Numerical results show that the proposed channel
estimator outperforms the conventional pilot channel
aided estimator, particularly when the channel
condition becomes worse
en
dc.language.isoen-
dc.subjectchannel estimationen
dc.subjectWCDMAen
dc.titleHybrid Adaptive Channel Estimation in WCDMA Downlink Systemsen
dc.typeConference Paperen
dc.contributor.AlternativeAuthor최인호-
dc.contributor.AlternativeAuthor이용환-
Appears in Collections:
College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Electrical and Computer Engineering (전기·정보공학부)Others_전기·정보공학부
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