Adaptive Sendersymbolanordnung zur Otfs-Kanalschätzung in der Verzögerungs-Dopplerdomäne

Details

Veröffentlichungs-Nr.

EP3761583

Aktenzeichen

EP19184349

Anmeldetag

4. Juli 2019

Veröffentlichung

7. September 2022

Erteilung

7. September 2022

Rechtsraum

EP

IPC

H04L27/26

Abstract

The invention relates to a method for adaptive transmitter symbol (20) arrangement in delay-Doppler domain grids (30) sequentially transmitted using an Orthogonal Time Frequency Space (OTFS) Modulation with channel estimation, said method comprising the steps of:a) retrieve one or several current communication relevant parameters;b) derive from the one or several current communication relevant parameters at least- a maximum expected Doppler frequency shift for a transmitted signal and wherein a first guard space parameter is equal to twice the absolute value of the maximum expected Doppler frequency shift; and- a maximum expected time delay for a transmitted signal as a second guard space parameter;c) place at least one pilot symbol in a delay-Doppler domain grid (30);d) place a minimum number of guard symbols (25) around the at least one pilot symbol in the delay-Doppler domain grid (30) such that the guard symbols (25) occupy a guard space around the at least one pilot such that any grid position outside the guard space around the at least one pilot has a distance along the first grid direction exceeding the derived first guard space parameter und also has a distance along the second grid direction that exceeds the second guard space parameter;e) place data symbols (27) in the delay-Doppler domain grid (30) outside the guard space for data transmission;wherein the steps a) to e) are iteratively carried out to adapt the minimum required number of guard symbols (25) around the at least one pilot symbol. The invention also provides a modulation module configured carried out the inventive method.

Anmelder

Firmen

Volkswagen Aktiengesellschaft
Volkswagen AG

Land

🇩🇪 Deutschland

Fachgebiete