Path detection method and device, and sphere decoding detection device

    公开(公告)号:US10084526B2

    公开(公告)日:2018-09-25

    申请号:US15328883

    申请日:2014-12-01

    Inventor: Gang Wu

    Abstract: The disclosure discloses a path detection method including after obtaining an equalizing signal of a received signal, Maximum Likelihood (ML) path detection and ML complementary set path detection are performed on the equalizing signal according to the pre-set maximum number of reserved nodes and maximum number of expanded branches of each layer; in the process of the detections, an accumulated path measurement value is calculated after finishing the search of each layer and each path, and the accumulated path measurement value is compared with a pre-set search measurement threshold; when the accumulated path measurement value is less than the search measurement threshold, the search of this path is continued; otherwise the search of this path is finished and the search of the next path is started until all the paths are searched. The disclosure also discloses a path detection device, Sphere Decoding (SD) detection device and computer storage medium.

    Interference rejection combining method, device and storage medium

    公开(公告)号:US09954596B2

    公开(公告)日:2018-04-24

    申请号:US15551075

    申请日:2015-12-29

    Inventor: Gang Wu

    Abstract: Disclosed in an embodiment of the disclosure is an interference rejection combining (IRC) method supporting transmit diversity, in which an N*N interference and noise covariance matrix corresponding to one subcarrier is generated from signals, in a transmit diversity mode, received at cell reference signal (CRS) resource positions via N receiving antennas, where N is greater than or equal to 3; Cholescy decomposition and upper triangular matrix inversion is performed on the N*N interference and noise covariance matrix to obtain an N*N block matrix; the N*N block matrix is expanded to a 2N*2N noise whitening matrix; and the received signals and channel estimation values are whitened according to the noise whitening matrix, and the whitened received signals and channel estimation values used to obtain a minimum mean square error-IRC (MMSE-IRC) processing result. Also disclosed are an IRC device supporting the transmit diversity, and a computer storage medium.

    Sampling clock phase mismatch error estimation method and apparatus, and storage medium

    公开(公告)号:US12057852B2

    公开(公告)日:2024-08-06

    申请号:US17772970

    申请日:2020-10-29

    Inventor: Gang Wu

    CPC classification number: H03M1/0607

    Abstract: Provided are a sampling clock phase mismatch error estimation method and apparatus, and a storage medium. This sampling clock phase mismatch error estimation method includes: a proportional relation between an estimation operator of a modular square subtraction method corresponding to each frequency interval of multiple frequency intervals and a sampling clock phase mismatch error of a time-interleaved analog to digital converter (TIADC) is acquired; a slope and an offset value of a fitting proportion line segment are counted; and a slope of a proportion line segment corresponding to a real-time estimation frequency is converted, and an offset value corresponding to the real-time estimation frequency is estimated through an interpolation according to a counted slope and a counted offset value, and the actual value of the sampling clock phase mismatch error is estimated according to a converted slope and an offset value estimated through the interpolation.

    PATH DETECTION METHOD AND DEVICE, AND SPHERE DECODING DETECTION DEVICE

    公开(公告)号:US20170214450A1

    公开(公告)日:2017-07-27

    申请号:US15328883

    申请日:2014-12-01

    Inventor: Gang Wu

    Abstract: The disclosure discloses a path detection method including after obtaining an equalizing signal of a received signal, Maximum Likelihood (ML) path detection and ML complementary set path detection are performed on the equalizing signal according to the pre-set maximum number of reserved nodes and maximum number of expanded branches of each layer; in the process of the detections, an accumulated path measurement value is calculated after finishing the search of each layer and each path, and the accumulated path measurement value is compared with a pre-set search measurement threshold; when the accumulated path measurement value is less than the search measurement threshold, the search of this path is continued; otherwise the search of this path is finished and the search of the next path is started until all the paths are searched. The disclosure also discloses a path detection device, Sphere Decoding (SD) detection device and computer storage medium.

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