Huawei Technologies Co., Limited

Nassar Ksairi

Merouane Debbah

Marios Kountouris

Jesus Arnau Yanez

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.

Transmitter device and receiver device for a wireless communication system

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.

Projected signals using discrete prolate spheroidal sequences

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.

Devices and methods for adaptively adjusting a MIMO transmission scheme

A network entity comprises a plurality of antenna elements arranged in one or more two dimensional (2D) arrays having one or more columns and rows. The network entity configured to determine at least one set of one or more precoding vectors related to the plurality of antenna elements, wherein each set of precoding vectors is associated with a different Kronecker product tradeoff parameter L&#x2265;1; and transmit, at least one set of a plurality of Cell Specific Reference Signals (CRS) to be used to estimate channel state information (CSI) based on the at least one set of precoding vectors and/or at least one Kronecker product tradeoff parameter L.

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Boulogne Billancourt, France

Nassar Ksairi