Doppler Spread Estimation by Subspace Tracking for OFDM Systems
Xiaochuan Zhao (1), Tao Peng (1), Ming Yang (1), Wenbo Wang (1), ((1) Beijing University of Posts, Telecommunications, Beijing, China)
TL;DR
This paper introduces a new algorithm for estimating Doppler spread in OFDM systems by tracking the delay subspace, significantly enhancing the accuracy of maximum Doppler spread measurement.
Contribution
It presents a novel subspace tracking method that improves Doppler spread estimation accuracy in OFDM systems with comb-type pilots.
Findings
Enhanced estimation accuracy of Doppler spread.
Effective tracking of the delay subspace.
Improved performance over existing methods.
Abstract
This paper proposes a novel maximum Doppler spread estimation algorithm for OFDM systems with the comb-type pilot pattern. By tracking the drifting delay subspace of the multipath channel, the time correlation function is measured at a high accuracy, which accordingly improves the estimation accuracy of the maximum Doppler spread considerably.
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Taxonomy
TopicsAdvanced Wireless Communication Techniques · Wireless Communication Networks Research · Power Line Communications and Noise