NDLI: Robust DFT-based channel estimation for burst OFDM systems

Content Provider	IEEE Xplore Digital Library
Author	Shi Feng Hu Dengpeng Zhang Eryang Wang Chen
Copyright Year	2010
Description	Author affiliation: Engineering Institute, Airforce Engineering University, Xi'an, China (Wang Chen) \|\| School of Electronic Science and Engineering, National University of Defense Technology, Changsha, China (Shi Feng; Hu Dengpeng; Zhang Eryang)
Abstract	A robust discrete Fourier transform (DFT)-based channel estimation for burst orthogonal frequency division multiplexing (OFDM) systems is proposed in this paper. The conventional DFT-based channel estimation methods improve the performance by neglecting nonsignificant channel taps. However, the error floor occurs at high signal-to-noise when useful channel information is discarded, especially in non-sample-spaced channel. To solve this problem, we propose a modified DFT-based channel estimation method. Based on the noise power estimated in the frequency domain, which does not suffer from the energy leakage of channel path, we design the threshold for detecting the significant channel taps. Moreover, a wider region with fixed width is designed to decrease the energy loss of channel. Simulation results show that the proposed method is robust to the distribution of channel paths, and the error floor is eliminated.
Starting Page	1
Ending Page	4
File Size	456600
Page Count	4
File Format	PDF
ISBN	9781424475568
e-ISBN	9781424475551
e-ISBN	9781424475544
DOI	10.1109/WCSP.2010.5633515
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-10-21
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	DFT OFDM Non-sample-spaced channel Noise Channel estimation Estimation Robustness Frequency domain analysis Delay
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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