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A Hybrid Channel Estimation Scheme for OFDM Systems

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Authors
Jeon, Jae-Hoon; Choi, Ji-Woong; Lee, Yong-Hwan
Issue Date
2005-10
Publisher
Korea Information and Communications Society = 한국통신학회
Citation
제18회 신호처리합동학술대회논문집, 2005년 10월
Keywords
channel estimationOFDMWienermoving 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
URI
http://hdl.handle.net/10371/7030
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Electrical and Computer Engineering (전기·정보공학부)Others_전기·정보공학부
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