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Patent AT-E400954-T1: [Translated] CHANNEL ESTIMATION WITH REDUCED COMPLEXITY IN OFDM SYSTEMS

Published by National Center for Biotechnology Information (NCBI) | U.S. Department of Health & Human Services | Metadata Last Checked: September 06, 2025 | Last Modified: 2025-09-06
A Doppler spread value of a channel in an Orthogonal Frequency Division Multiplexing (OFDM) system is estimated, wherein the channel comprises a plurality of carrier frequencies. Estimating involves selecting a set of two or more carrier frequencies from the plurality of carrier frequencies. A Doppler spread value is estimated for each of the selected carrier frequencies. An estimate of the Doppler spread value of the channel is produced by combining the estimated Doppler spread values of each of the selected carrier frequencies. For example, the Doppler spread value of the channel may be estimated by averaging the estimated Doppler spread values of each of the selected carrier frequencies.

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