Effects of Precoder Ordering on OFDM-SAGE Parametric Channel Estimation
Pinto, Enrique T. R.; Juntti, Markku (2025-06-26)
IEEE
26.06.2025
E. T. R. Pinto and M. Juntti, "Effects of Precoder Ordering on OFDM-SAGE Parametric Channel Estimation," 2025 Joint European Conference on Networks and Communications & 6G Summit (EuCNC/6G Summit), Poznan, Poland, 2025, pp. 661-666, doi: 10.1109/EuCNC/6GSummit63408.2025.11036998
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© 2025 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
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Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:oulu-202506305023
https://urn.fi/URN:NBN:fi:oulu-202506305023
Tiivistelmä
Abstract
With the increasing interest in integrated sensing and communication (ISAC), parametric channel estimation (PCE) is progressively becoming an essential technique for communication systems. When prior information on the channel is available, it is possible to design pilots that improve PCE performance, which is highly beneficial for ISAC applications in directive mmWave and upper mid-band channels. In this work, we introduce an orthogonal frequency division multiplexing (OFDM) pilot design that accounts for the effects of Doppler, an often overlooked aspect. We show theoretically and numerically that the proposed pilot design provides significant improvement over an isotropic signal. We also show that multipath Doppler estimation is highly sensitive to the time distribution of energy delivered to each path.
With the increasing interest in integrated sensing and communication (ISAC), parametric channel estimation (PCE) is progressively becoming an essential technique for communication systems. When prior information on the channel is available, it is possible to design pilots that improve PCE performance, which is highly beneficial for ISAC applications in directive mmWave and upper mid-band channels. In this work, we introduce an orthogonal frequency division multiplexing (OFDM) pilot design that accounts for the effects of Doppler, an often overlooked aspect. We show theoretically and numerically that the proposed pilot design provides significant improvement over an isotropic signal. We also show that multipath Doppler estimation is highly sensitive to the time distribution of energy delivered to each path.
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