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    Machine-learning-based detection and reconstruction from low-resolution samples
    12.
    发明授权
    Machine-learning-based detection and reconstruction from low-resolution samples 有权

    公开(公告)号：US11139866B2

    公开(公告)日：2021-10-05

    申请号：US17135748

    申请日：2020-12-28

    Applicant: NOKIA TECHNOLOGIES OY

    Inventor： Faycal Ait Aoudia ,  Jakob Hoydis ,  Paul Tourniaire ,  Luc Dartois

    IPC: H04B7/0413

    Abstract: According to an aspect, there is provided an apparatus comprising a combiner for combining a received analog signal with an analog dithering signal to produce a combined analog signal, a one-bit analog-to-digital converter for converting the combined analog signal to a combined digital signal, means for performing joint downsampling and feature extraction for the combined digital signal, means for implementing a trained machine-learning algorithm for calculating one or more input parameters for waveform generation at least based on one or more features extracted from the combined digital signal and a parametric waveform generator for generating the analog dithering signal based on the one or more input parameters.

    Communication system having a configurable modulation order and an associated method and apparatus
    13.
    发明授权
    Communication system having a configurable modulation order and an associated method and apparatus 有权

    公开(公告)号：US11082149B2

    公开(公告)日：2021-08-03

    申请号：US16905569

    申请日：2020-06-18

    Applicant: NOKIA TECHNOLOGIES OY

    Inventor： Jakob Hoydis ,  Faycal Ait Aoudia ,  Mathieu Goutay

    IPC: H04L1/00 ,  G06N3/02 ,  H04L5/00

    Abstract: A method, apparatus, receiver and system provide for configurability of the modulation order of a communications system, such as an autoencoder-based communication system. With respect to a system including a transmitter and a receiver, the transmitter encodes a message into a vector of channel symbols for transmission via a channel. The message is encoded pursuant to a modulation order m that is adjustable up to a maximum modulation order Mmax. The receiver receives a vector of samples generated by the channel and determines a first prediction vector for the message encoded by the transmitter. The receiver includes a slicing layer to eliminate one or more elements of the first prediction vector if the modulation order m is less than the maximum modulation order Mmax so as to generate a second prediction vector tailored to the modulation order from which a prediction of the message encoded by the transmitter is identified.

    Method and apparatus for providing timing synchronization
    14.
    发明授权
    Method and apparatus for providing timing synchronization 有权

    公开(公告)号：US10893495B2

    公开(公告)日：2021-01-12

    申请号：US16778116

    申请日：2020-01-31

    Applicant: Nokia Technologies Oy

    Inventor： Faycal Ait Aoudia ,  Jakob Hoydis

    IPC: H04W56/00 ,  G06N3/04 ,  G06N3/08 ,  H04W72/04

    Abstract: A method, apparatus, receiver and system provide timing synchronization during data transmission over a channel. In the context of a method, the method receives, for individual ones of a plurality of sequences of samples generated by a channel in response to transmission of corresponding frames that are comprised of a plurality of symbols including a preamble and one or more data symbols: (i) a probability vector and (ii) an indication of the sample of the respective sequence that corresponds to the particular symbol of the corresponding frame. The method determines one or more updated parameters of a frame detector of a receiver that receives the sequence of samples from the channel. The method determines one or more updated parameters of a preamble generator of a transmitter that provides the preamble for transmission over the channel.

    Signal demapping
    15.
    发明授权
    Signal demapping 有权

    公开(公告)号：US11949484B2

    公开(公告)日：2024-04-02

    申请号：US17628372

    申请日：2019-09-03

    Applicant: Nokia Technologies OY

    Inventor： Faycal Ait Aoudia ,  Jakob Hoydis

    IPC: H04B7/06 ,  G06N3/08

    CPC classification number: H04B7/0639 ,  G06N3/08 ,  H04B7/0663

    Abstract: In one embodiment, a trainable logic includes determination logic configured to determine a plurality of available receiver configurations and associate each receiver configuration with a context matrix; codebook logic configured to select a quantisation codebook to be used by the trainable logic for the context matrices; and learning logic configured to learn from a training dataset including a plurality of received signal samples relevant to reconstruction of a transmitted message. The learning logic is configured to generate, from the training dataset, a set of superposed parameters and context matrices corresponding to the plurality of available receiver configurations and a set of contextual parameters for each context; quantize the context matrices according to the quantisation codebook; and repeat the generation of superposed parameters, context matrices and quantization of context matrices until a stop criterion is met.

    End-to-end learning in communication systems
    17.
    发明授权
    End-to-end learning in communication systems 有权

    公开(公告)号：US11804860B2

    公开(公告)日：2023-10-31

    申请号：US17291477

    申请日：2018-11-23

    Applicant: NOKIA TECHNOLOGIES OY

    Inventor： Jakob Hoydis ,  Faycal Ait Aoudia

    IPC: H04B1/00 ,  G06N3/08 ,  H04B1/40 ,  G06N3/045

    CPC classification number: H04B1/0003 ,  G06N3/045 ,  G06N3/08 ,  H04B1/40

    Abstract: An apparatus, method and computer program performs initializing parameters of a transmission system. The transmission system comprises a transmitter, a first channel, a relay, a second channel and a receiver. The transmitter includes a transmitter algorithm having trainable weights, the relay includes a relay algorithm having trainable weights and the receiver includes a receiver algorithm having trainable weights. A first training sequence of messages is received, and the first training sequence of messages is sent from the transmitter to the relay using the first channel and is sent from the relay to the receiver using the second channel. A loss function is obtained or generated, and trainable parameters of the transmission system are updated based on the loss function. The trainable parameters include some of the trainable weights of the transmitter, some of the trainable weights of the relay, and some of the trainable weights of the receiver.

    Rate adaptation
    18.
    发明授权
    Rate adaptation 有权

    公开(公告)号：US11722240B2

    公开(公告)日：2023-08-08

    申请号：US17482610

    申请日：2021-09-23

    Applicant: NOKIA TECHNOLOGIES OY

    Inventor： Faycal Ait Aoudia ,  Jakob Hoydis

    IPC: H04L1/00 ,  H04L1/20 ,  H04W72/542

    CPC classification number: H04L1/0003 ,  H04L1/206 ,  H04W72/542

    Abstract: This specification describes an apparatus relating to rate adaptation. The apparatus may comprise a processor and a memory including instructions, the instructions, when executed by the processor, cause the apparatus to provide first data representing an estimate of a communications link based on a signal received over said communications link from a transmitter. The apparatus may determine an estimated achievable data rate over said communications link for each of a plurality of link configurations which have respective combinations of modulation scheme and pilot symbol pattern which correspond to one or more transmitter link configurations, the estimated achievable data rate for a particular link configuration being determined based on the first data, and the modulation scheme and the pilot pattern of the particular reference link configuration. The apparatus may select a transmitter link configuration based on the estimated achievable data rates.

    Training in Communication Systems
    19.
    发明公开
    Training in Communication Systems 审中-公开

    公开(公告)号：US20230246887A1

    公开(公告)日：2023-08-03

    申请号：US18013586

    申请日：2020-06-29

    Applicant: Nokia Technologies Oy

    Inventor： Faycal Ait Aoudia ,  Jakob HOYDIS

    IPC: H04L25/03 ,  H04B7/06

    CPC classification number: H04L25/03165 ,  H04L25/03343 ,  H04B7/0615

    Abstract: An apparatus, method and computer program is described including: receiving, at a receiver of a transmissions system, transmitted signals from each of a plurality of transmitters, wherein each transmitter communicates with the receiver over one of a plurality of channels of the transmission system, wherein each transmitter includes a transmitter algorithm having at least some trainable weights, wherein each transmitter algorithm has the same trainable weights and wherein each of the transmitted signals is based on a perturbed channel symbol generated at the respective transmitter, wherein the channel symbols and perturbations are known to the receiver; updating the weights of the transmitter algorithm, at the receiver, based on a loss function; providing the updated weights to each transmitter of the transmission system; and repeating the receiving and updating until a first condition is reached.

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