公开(公告)号：US20240094336A1

公开(公告)日：2024-03-21

申请号：US18516515

申请日：2023-11-21

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Nassar KSAIRI ,  Merouane DEBBAH

IPC: G01S7/288 ,  G01S7/292

CPC classification number: G01S7/2883 ,  G01S7/292

Abstract: A signal may be generated by modulating a plurality of chirp signals with a set of input symbols. Chirp signals may be characterized by a second order bivariate polynomial and the coefficients of the quadratic terms of the polynomial may be selected to achieve desired frequency diversity. Furthermore, at least one of the coefficients may be adjusted based on channel state information to mitigate effective Doppler spread in a discrete affine Fourier transform domain virtual channel.

公开(公告)号：US20180337758A1

公开(公告)日：2018-11-22

申请号：US16051958

申请日：2018-08-01

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Nassar KSAIRI ,  Stefano TOMASIN ,  Beatrice TOMASI

IPC: H04L5/00 ,  H04L27/26 ,  H04B17/309 ,  H04L25/02

CPC classification number: H04L5/0048 ,  H04L5/0023 ,  H04L5/006 ,  H04L5/0069

Abstract: A first apparatus used in a wireless network for scheduling of resources to user terminals, comprises a receiver adapted to receive wirelessly a plurality of transmission signals from a plurality of user terminals over a plurality of channels, and a processing unit adapted to assigning at least one of the plurality of user terminals to a resource block from a plurality of resource blocks according to at least one statistical channel feature of the respective channel from the plurality of channels which is used by respective the user terminal.

公开(公告)号：US20210119679A1

公开(公告)日：2021-04-22

申请号：US17138305

申请日：2020-12-30

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Nassar KSAIRI ,  Marios KOUNTOURIS ,  Jesus ARNAU YANEZ

IPC: H04B7/06 ,  H04B7/0452 ,  H04B7/0456

Abstract: The application relates to a user equipment for wireless communications with a multiple-input multiple-output (MIMO) base station over a wireless communications channel. The user equipment comprises a communications interface configured to receive a current pilot signal over the wireless communications channel from the base station, and at least one processor configured to determine a current channel state information (CSI) based on the current pilot signal and to determine a CSI reliability measure value based on the current CSI and one or several previous CSI, where the at least one processor is configured to determine the previous CSI based on previous pilot signals, i.e. previously received pilot signals.

公开(公告)号：US20240097956A1

公开(公告)日：2024-03-21

申请号：US18517880

申请日：2023-11-22

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Nassar KSAIRI ,  Merouane DEBBAH

IPC: H04L27/26

CPC classification number: H04L27/26035 ,  H04L27/2628

Abstract: A device may obtain a sequence of input samples. The device may further obtain a first set of sequences, which may be based on discrete prolate spheroidal sequences associated with eigenvalues having a value larger than a first threshold. The device may determine a first projected sample sequence comprising a projection of the sequence of input samples to the first set of sequences and generate a signal based on the first projected sample sequence. Another device may determine a window of received samples of the signal and project the window of received samples to the first set of sequences or filter the window of received samples to obtain a first sample sequence. The detection of the received signal may then be performed based on the first sample sequence.

公开(公告)号：US20230403189A1

公开(公告)日：2023-12-14

申请号：US18455428

申请日：2023-08-24

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Nassar KSAIRI ,  Merouane DEBBAH

IPC: H04L27/26 ,  H04B7/0452

CPC classification number: H04L27/2639 ,  H04B7/0452 ,  H04L27/2607

Abstract: The present disclosure relates to a transmitter device and a receiver device for a wireless communication system supporting low-overhead multiple access for a layered Fast Fourier Transform-based wireless communication. The transmitter device obtains a plurality of first data symbol matrices in a delay-Doppler domain for a plurality of users, a plurality of second data symbol matrices in an intermediate-frequency domain for the plurality of users, and an aggregated matrix in the intermediate-frequency domain for the plurality of users. The receiver device obtains an aggregated matrix in the intermediate-frequency domain for a plurality of users based on a signal received in a time domain from the transmitter device, a plurality of first data symbol matrices in the intermediate-frequency domain for the plurality of users, and a plurality of second data symbol matrices in the delay-Doppler domain for the plurality of users.