NDLI: A Novel Blind Delay Spread Estimation using Frequency Correlation for Wireless OFDM Systems

Content Provider	IEEE Xplore Digital Library
Author	Doukas, A. Kalivas, G.
Copyright Year	2006
Description	Author affiliation: Univ. of Patras, Patras (Doukas, A.; Kalivas, G.)
Abstract	In this paper we propose a novel blind Delay Spread (DS) estimator for wireless Orthogonal Frequency Division Multiplexed (OFDM) systems. DS gives a measure of the frequency selectivity of the wireless channel, which can be used for channel estimation and to adjust the guard interval size to avoid Inter-Symbol Interference. The estimator is based on the frequency correlation between subcarriers of one OFDM symbol and an expression between frequency correlation and DS is derived assuming an exponentially decaying power delay profile (PDP). To derive the frequency correlation values we use frequency separation values different to zero, which to the best of authors' knowledge is the first time that is introduced. The estimation accuracy, examined in environments with different PDPs, including transceiver mobility and channel sparsity, using several constellation schemes is very high from low SNR values with small variance.
Starting Page	156
Ending Page	159
File Size	493412
Page Count	4
File Format	PDF
ISBN	9789957486006
DOI	10.1109/MCWC.2006.4375214
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-09-17
Publisher Place	Jordan
Access Restriction	Subscribed
Rights Holder	MOSHARAKA
Subject Keyword	Baseband OFDM Bit rate Channel estimation Delay estimation Interference Frequency estimation Frequency measurement Noise measurement Frequency division multiplexing
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
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
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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