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A Hybrid Channel Estimation Scheme for OFDM Systems
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- Authors
- Issue Date
- 2005-10
- Citation
- 제18회 신호처리합동학술대회논문집, 2005년 10월
- Keywords
- channel estimation ; OFDM ; Wiener ; moving average
- Abstract
- Accurate channel information is indispensable
for coherent reception of OFDM signal. Although a Wienertype
channel estimation filter (CEF) is known optimum, it is
not easily employable due to large implementation
complexity. In practice, a moving average (MA)-type CEF
is often employed, but it may not provide robust
performance to the variation of channel condition. In this
paper, we propose a hybrid CEF that takes advantages of
both the Wiener and MA CEF, by alternatively employing
the CEF according to the channel condition. Simulation
results show that the proposed hybrid CEF scheme provides
near optimum performance, while significantly reducing
the implementation complexity compared to the long tap
Wiener CEF.
- Language
- English
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