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公开(公告)号：US20240073066A1
公开(公告)日：2024-02-29
申请号：US18500442
申请日：2023-11-02
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Ronald BOEHNKE , Muhammed Yusuf SENER , Wen XU
CPC classification number: H04L25/03343 , H04L1/0057
Abstract: The present disclosure relates to a dirty paper coding (DPC) scheme for a wireless communication system. One example encoding device obtains symbol probabilities for symbols of a symbol sequence given an effective interference based on a target distribution of symbols of a transmit signal, encodes a message into the symbol sequence based on the symbol probabilities, and then obtains the transmit signal based on a mapping of the symbol sequence and the effective interference using a scalar function. One example decoding device obtains a receive signal, obtains a symbol sequence based on the receive signal and a scaling factor using a scalar function, and then decodes the symbol sequence to obtain a message.
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Patent Agency Ranking
公开(公告)号：US20210359784A1
公开(公告)日：2021-11-18
申请号：US17390027
申请日：2021-07-30
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Onurcan ISCAN , Wen XU
IPC: H04L1/00
Abstract: Example transmission methods and apparatus are described. In one example method, a transmitter is configured to communicate with a receiver via a communication channel. The transmitter is configured to precode a data word into a precoded data word using a probabilistic shaping scheme, wherein the probabilistic shaping scheme depends on one or more precoding parameters. The precoded data word is encoded into a codeword using a modulation and/or coding scheme, wherein the modulation and/or coding scheme depends on one or more modulation and coding parameters. At least one precoding parameter is determined on the basis of at least one of the one or more modulation and coding parameters and/or on the basis of at least one further precoding parameter.
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公开(公告)号：US20220263694A1
公开(公告)日：2022-08-18
申请号：US17728659
申请日：2022-04-25
Applicant: Huawei Technologies Co., Ltd.
Inventor： Onurcan ISCAN , Ronald BOEHNKE , Wen XU
Abstract: The present disclosure relates to an apparatus and method for multi-level encoding of an input message sequence into a symbol sequence, for instance, based on polar coding. The input message comprises information bits. The apparatus is configured to divide the input message into a plurality of sub-messages, encode each of the sub-messages into a codeword, wherein a set of the sub-messages is encoded on the basis of the codewords obtained by encoding the sub-messages not in the set and a predefined function of the symbol sequence, and map the encoded sub-messages into corresponding symbols.
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公开(公告)号：US20190081770A1
公开(公告)日：2019-03-14
申请号：US16188706
申请日：2018-11-13
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Zhao ZHAO , Qi WANG , Malte SCHELLMANN , Wen XU , Xitao GONG
Abstract: The disclosure relates to a radio transceiving device (210, 220), comprising: a modulation unit (211, 221), configured to modulate transmit data (215, 225) onto a time-frequency resource (219, 229) based on a transmit waveform (217, 227), in particular a transmit pulse, a transmit window or a transmit filter; a demodulation unit (212, 222), configured to demodulate receive data (216, 226) from the time-frequency resource (219, 229) based on a receive waveform (218, 228), in particular a receive pulse, a receive window or a receive filter, wherein the transmit data (215, 225) and the receive data (216, 226) are arranged on the time-frequency resource (219, 229), in particular in a time-division duplexing (TDD) manner; and a waveform adaptation unit (213, 223) configured to adapt at least one of the transmit waveform (217, 227) and the receive waveform (218, 228) based on a set of distinct transmit and receive waveforms (214, 224).
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5.发明申请公开(公告)号：US20200313696A1
公开(公告)日：2020-10-01
申请号：US16901934
申请日：2020-06-15
Inventor： Balazs MATUZ , Gianluigi LIVA , Onurcan ISCAN , Ronald BOEHNKE , Wen XU
Abstract: Protograph-based LDPC codes are obtained from z-row-orthogonal base matrices with some additional structure constraints, such as a diagonal and/or double-diagonal structure, in order to allow a high parallelization that is a multiple of z, while having an efficient encoding or decoding. A “big” base matrix is constructed from a structured square submatrix in order to have a WiMAX-like structure and a z-row-orthogonality. Also, starting from a “smaller” base matrix having a part arranged in a double-diagonal shape with tail-biting one, an expansion by a factor equal to z can be performed, followed by an addition of a single one-entry into the last column at a specific location, thereby obtaining a three-degree column, and followed by a row and/or column permutation in order to obtain a base matrix in a WiMAX-like structure.
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6.发明申请公开(公告)号：US20180234268A1
公开(公告)日：2018-08-16
申请号：US15955477
申请日：2018-04-17
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Samer BAZZI , Wen XU
Abstract: Allocation of CSI-RS or CSI pilot sequences among cells in a cooperative manner to reduce pilot inter-cell interference. Sequences in each cell occupy the same time slot, multiple subcarrier frequencies, and are orthogonal in time via properly chosen cyclic shifts. Sequences in multiple cells are chosen from a pool of non-orthogonal yet distinguishable sequences through their root indices. Exchanging root indices among cells allows a given cell to reconstruct sequences used in neighboring cells and to estimate interfering channels as the number of channel taps is usually limited, thus mitigating pilot contamination. Furthermore, a greedy selection algorithm to find combinations of sequences that further reduce the channel estimation mean-square-error is proposed.
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