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Fast initialization of equalizers for VSB-based DTV transceivers in multipath channel

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Authors
Kim, Jong-Moon; Lee, Yong-Hwan
Issue Date
2005-03
Publisher
Institute of Electrical and Electronics Engineers
Citation
IEEE Transactions on Broadcasting, vol. 51, no. 1, pp. 133-138, March 2005
Keywords
Decision feedback equalizersdigital TVmultipath channels
Abstract
This paper proposes a fast initialization technique for equalization of 8-VSB-based digital television (DTV) signal in severe
multipath channels. We consider the use of a modified decision feedback equalizer (MDFE) [1], [2] for fast initialization. The feedback filter (FBF) of the MDFE can be initialized simply by estimating the channel impulse response and only the feedforward
filter (FFF) of the MDFE need training for initialization. To overcome the shortage of the training sequence in the VSB DTV signal,
we propose a new initialization method by generating a virtual training signal to initialize the FFF of the MDFE. Simulation results showthat the proposed scheme can fast initialize the equalizer using less than 5000 symbols, while providing the receiver performance comparable to that of conventional schemes.
ISSN
0018-9316
Language
English
URI
http://hdl.handle.net/10371/6741
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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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