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Proceedings Paper

Novel time-domain windowing channel estimation for OFDM in mobile system
Author(s): Hongzhi Lin; Guangxi Zhu; Desheng Wang
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Paper Abstract

A modified time-frequency transform algorithm is developed in this paper, the continuous pilot signal in time domain is transformed into time domain, through peak-detection processing, the possible peaks relative to multipath components are found and a proper window function is adopted to localize the peaks and minimize the noisy impact of non-peak area, the filtered pilot signal is then interpolated and transformed back to frequency domain. This simple but effective algorithm kicks out the additive noise and approaches the real channel response without additive noise more closely, improving the SNR of received signal after the deconvolution based on the channel estimation. The simulation results adopting this algorithm show the expected improvement of SNR of received signal.

Paper Details

Date Published: 28 April 2004
PDF: 8 pages
Proc. SPIE 5284, Wireless Communications and Networks, (28 April 2004); doi: 10.1117/12.520447
Show Author Affiliations
Hongzhi Lin, Huazhong Univ. of Science and Technology (China)
Guangxi Zhu, Huazhong Univ. of Science and Technology (China)
Desheng Wang, Huazhong Univ. of Science and Technology (China)

Published in SPIE Proceedings Vol. 5284:
Wireless Communications and Networks
Chih-Lin I; Jiann-An Tsai; Hequan Wu, Editor(s)

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