Progressive modulation for downstream access

    公开(公告)号:US10771278B2

    公开(公告)日:2020-09-08

    申请号:US16188962

    申请日:2018-11-13

    Abstract: A method, system and computer program for transmitting at least two payloads in a downstream traffic phase of a time-division duplex (TDD) cycle with a single preamble from a headend followed by concatenated payloads without intervening preambles, whereby the payloads are ranked by increasing modulation profiles. The preamble, and concatenated and ordered set of payloads are then transmitted to two or more predetermined customer premise equipments (CPEs).

    Progressive modulation for downstream access

    公开(公告)号:US10129048B2

    公开(公告)日:2018-11-13

    申请号:US15717550

    申请日:2017-09-27

    Abstract: A method, system and computer program for transmitting at least two payloads in a downstream traffic phase of a time-division duplex (TDD) cycle with a single preamble from a headend followed by concatenated payloads without intervening preambles, whereby the payloads are ranked by increasing modulation profiles. The preamble, and concatenated and ordered set of payloads are then transmitted to two or more predetermined customer premise equipments (CPEs).

    LDPC CODE MATRICES
    16.
    发明申请
    LDPC CODE MATRICES 有权
    LDPC码代码矩阵

    公开(公告)号:US20160173129A1

    公开(公告)日:2016-06-16

    申请号:US15001718

    申请日:2016-01-20

    Abstract: An LDPC parity check matrix, includes a systematic portion having a plurality of systematic elements and a parity portion having a plurality of parity elements. The value of each systematic element determines a cyclic shift to be applied to rows of an identity submatrix corresponding to that element. The value of each parity element determines a cyclic shift to be applied to rows of an identity submatrix corresponding to that element. The weights of two or more columns of the parity portion are the same.

    Abstract translation: LDPC奇偶校验矩阵包括具有多个系统元素的系统部分和具有多个奇偶校验元素的奇偶校验部分。 每个系统元素的值确定要应用于与该元素相对应的身份子矩阵的行的循环移位。 每个奇偶校验元素的值确定要应用于与该元素相对应的身份子矩阵的行的循环移位。 奇偶校验部分的两列或多列的权重相同。

    LDPC code matrices
    19.
    发明授权

    公开(公告)号:US11411580B2

    公开(公告)日:2022-08-09

    申请号:US16695234

    申请日:2019-11-26

    Abstract: An LDPC parity check matrix, includes a systematic portion having a plurality of systematic elements having a value, the value each systematic element determining a cyclic shift to be applied to rows of an identity submatrix corresponding to that element; and a parity portion having a plurality of panty elements having a value, the value of each parity element determining a cyclic shift to be applied to rows of an identity submatrix corresponding to that element; wherein the weights of each column of a group of columns of the parity portion is the same. The LDPC parity check matrix may be used for data access, communication and storage, and may be used, for example for communications among a plurality of network nodes.

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