Granted Patent B2

US 12,609,856 · App. 18/724,314 · Granted Apr 21, 2026

Inventors: Armed Tusha (Beykoz, TR); Hüseyin Arslan (Beykoz, TR)

H04L27/2639H04L27/263

Abstract

Claims (10)

1 . A method for a multicarrier connection design in a system with a single orthogonal time frequency space (OTFS) with active users that are served by one base station in a downlink transmission and in which a scheduling of user equipments is organized on a slot-by-slot basis, a queue of packets being stored at the base station for each user equipment of the user equipments, the method comprising:

employing an algorithm having an objective function of max(Pu), u∈[1, 2, 3, . . . , Nu], wherein Nu is a number of the user equipments and Pu is a number of channel taps of a given user equipment, the algorithm assigning priority for transmission to the user equipment with a maximum number of channel taps;

applying an inverse symplectic Fast Fourier Transform (ISFFT) to data symbols selected by the algorithm, wherein the ISFFT converts the selected data symbols into a time-frequency domain by applying an N-point inverse Fast Fourier Transform (IFFT) to rows of the selected data symbols and applying an M-point FFT to columns of the selected data symbols;

performing a Heisenberg transform to the converted data symbols by using an M-point inverse Fast Fourier Transform over the time-frequency data symbols;

adding a cyclic prefix of a length L to the Heisenberg transformed converted data symbols, where L is a number of channel paths to a transmission of an OTFS signal;

removing the cyclic prefix after receiving the transmitted OTFS signal;

preforming a Wigner transform to the cyclic prefix removed transmitted OTFS signal to recover a time-frequency representation of the received cyclic prefix removed transmitted OTFS signal;

performing a symplectic Fast Fourier Transform to the received cyclic prefix removed transmitted OTFS signals so as to move the received signals into a delay-Doppler domain; and

mapping the delay-Doppler domain received signals into received data symbols after performing channel equalization.

2 . The method of claim 1 , wherein the method is used in a wireless system.

Priority Claims (1)

Continuity (1)

References Cited (57)