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公开(公告)号：US20230419145A1
公开(公告)日：2023-12-28
申请号：US18462189
申请日：2023-09-06
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Abstract: The present disclosure relates to the field of quantum computing, and in particular to simulating quantum circuits with a quantum simulator. The disclosure presents a processor for a quantum simulator. The processor is configured to perform a local search algorithm to determine a plurality of contraction expressions suitable to contract a respective tensor network into a determined contracted tensor network. The processor is further configured to determine, for each contraction expression, a contraction cost for contracting the respective tensor network based on a cost function, and to select the contraction expression with the lowest contraction cost to contract each tensor network into the determined contracted tensor network. The cost function is based on three parameters, which respectively indicate a required memory amount, a computational complexity, and a number of read-write operations required for contracting the respective tensor network into the determined contracted tensor network.
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Patent Agency Ranking
公开(公告)号：US20180226992A1
公开(公告)日：2018-08-09
申请号：US15887148
申请日：2018-02-02
Applicant: Huawei Technologies Co., Ltd.
Inventor： Pavel Anatolyevich Panteleev , Wen Tong , Jiang Li , Gleb Vyacheslavovich Kalachev , Ivan Leonidovich Mazurenko , Elyar Eldarovich Gasanov , Aleksey Alexandrovich Letunovskiy
Abstract: A method and system for offset lifting is provided. In an embodiment, a method for encoding data includes receiving a K-bit source word input. The method also includes encoding the K-bit source word input according to a LDPC code, a lifting function, and a circulant size offset to generate an N-bit code word output. The circulant size and lifting function are determined according to an information length, a code rate, and a decoder. The method also includes storing the N-bit code word output in input/output memory.
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公开(公告)号：US10567002B2
公开(公告)日：2020-02-18
申请号：US16400877
申请日：2019-05-01
Applicant: Huawei Technologies Co., Ltd.
Inventor： Yurii Sergeevich Shutkin , Pavel Anatolyevich Panteleev , Aleksey Alexandrovich Letunovskiy , Elyar Eldarovich Gasanov , Gleb Vyacheslavovich Kalachev , Ivan Leonidovich Mazurenko
Abstract: Certain aspects of the present disclosure provide an efficiently decodable QC-LDPC code which is based on a base matrix, the base matrix being formed by columns and rows, the columns being dividable into one or more columns corresponding to punctured variable nodes and columns corresponding to non-punctured variable nodes. Apparatus at a transmitting side includes a encoder configured to encode a sequence of information bits based on the base matrix. Apparatus at a receiving side configured to receive a codeword in accordance with a radio technology across a wireless channel. The apparatus at the receiving side includes a decoder configured to decode the codeword based on the base matrix.
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公开(公告)号：US11095317B2
公开(公告)日：2021-08-17
申请号：US16506696
申请日：2019-07-09
Applicant: Huawei Technologies Co., Ltd.
Inventor： Pavel Anatolyevich Panteleev , Gleb Vyacheslavovich Kalachev , Ivan Leonidovich Mazurenko , Elyar Eldarovich Gasanov , Yurii Sergeevich Shutkin
Abstract: A base matrix of a rate-adaptive irregular QC-LDPC code is provided, the base matrix being formed by columns and rows having entries representing circulant submatrices. The columns of the base matrix are divided into at least one or more higher weight first columns and lower weight second columns and the rows of the base matrix are divided into first high weight rows corresponding to the high rate mother code and second low weight rows corresponding to the extension part related to the lower rate codes. A first submatrix formed by an intersection of entries of the second columns and entries of the first and the second rows is divided into first quadratic submatrices, wherein at most one entry in each column of each first submatrix and/or at most one entry in each row of each first submatrix is labelled.
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公开(公告)号：US11265014B2
公开(公告)日：2022-03-01
申请号：US16749453
申请日：2020-01-22
Applicant: Huawei Technologies Co., Ltd.
Inventor： Yurii Sergeevich Shutkin , Pavel Anatolyevich Panteleev , Aleksey Alexandrovich Letunovskiy , Elyar Eldarovich Gasanov , Gleb Vyacheslavovich Kalachev , Ivan Leonidovich Mazurenko
Abstract: Certain aspects of the present disclosure provide an efficiently decodable QC-LDPC code which is based on a base matrix, the base matrix being formed by columns and rows, the columns being dividable into one or more columns corresponding to punctured variable nodes and columns corresponding to non-punctured variable nodes. Apparatus at a transmitting side includes a encoder configured to encode a sequence of information bits based on the base matrix. Apparatus at a receiving side configured to receive a codeword in accordance with a radio technology across a wireless channel. The apparatus at the receiving side includes a decoder configured to decode the codeword based on the base matrix.
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公开(公告)号：US10594339B2
公开(公告)日：2020-03-17
申请号：US15887148
申请日：2018-02-02
Applicant: Huawei Technologies Co., Ltd.
Inventor： Pavel Anatolyevich Panteleev , Wen Tong , Jiang Li , Gleb Vyacheslavovich Kalachev , Ivan Leonidovich Mazurenko , Elyar Eldarovich Gasanov , Aleksey Alexandrovich Letunovskiy
Abstract: A method and system for offset lifting is provided. In an embodiment, a method for encoding data includes receiving a K-bit source word input. The method also includes encoding the K-bit source word input according to a LDPC code, a lifting function, and a circulant size offset to generate an N-bit code word output. The circulant size and lifting function are determined according to an information length, a code rate, and a decoder. The method also includes storing the N-bit code word output in input/output memory.
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