Trellis shaping on LDPC-coded modulation DMT systems

    公开(公告)号:US10181973B2

    公开(公告)日:2019-01-15

    申请号:US15176375

    申请日:2016-06-08

    Abstract: A transmitter in a Digital Subscriber Line (DSL) system includes a rate encoder configured to generate a first set of encoded bits using a set of least significant bits, a trellis shaper configured to generate a second set of encoded bits using a most significant bit and the first set of encoded bits, a first constellation mapper configured to generate a first point described by integer coordinates in a complex plane based on the first set of encoded bits obtained from the rate encoder, a second constellation mapper configured to generate a second point described by integer coordinates in the complex plane after interleaving two bits from the second set of encoded bits obtained from the trellis shaper, and a merger module configured to merge the first point with the second point to generate a symbol. The symbol represents a third point described by integer coordinates in the complex plane.

    Trellis Shaping on LDPC-Coded Modulation DMT Systems
    3.
    发明申请
    Trellis Shaping on LDPC-Coded Modulation DMT Systems 审中-公开
    网格形成LDPC编码调制DMT系统

    公开(公告)号:US20160366005A1

    公开(公告)日:2016-12-15

    申请号:US15176375

    申请日:2016-06-08

    Abstract: A transmitter in a Digital Subscriber Line (DSL) system includes a rate encoder configured to generate a first set of encoded bits using a set of least significant bits, a trellis shaper configured to generate a second set of encoded bits using a most significant bit and the first set of encoded bits, a first constellation mapper configured to generate a first point described by integer coordinates in a complex plane based on the first set of encoded bits obtained from the rate encoder, a second constellation mapper configured to generate a second point described by integer coordinates in the complex plane after interleaving two bits from the second set of encoded bits obtained from the trellis shaper, and a merger module configured to merge the first point with the second point to generate a symbol. The symbol represents a third point described by integer coordinates in the complex plane.

    Abstract translation: 数字用户线(DSL)系统中的发射机包括速率编码器,其被配置为使用一组最低有效位来生成第一组编码比特,网格整形器被配置为使用最高有效位生成第二组编码比特, 所述第一组编码比特,第一星座图映射器,被配置为基于从所述速率编码器获得的所述第一组编码比特,在复平面中生成由整数坐标描述的第一点;第二星座图映射器,被配置为生成描述的第二点 通过在从格架整形器获得的第二组编码比特中交织两个比特之后的复平面中的整数坐标,以及被配置为将第一点与第二点合并以生成符号的合并模块。 符号表示由复平面中的整数坐标描述的第三点。

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