Transmitter Noise Injection
    4.
    发明申请
    Transmitter Noise Injection 有权
    变送器噪声注入

    公开(公告)号:US20150280870A1

    公开(公告)日:2015-10-01

    申请号:US14722511

    申请日:2015-05-27

    Abstract: A transmitter including a noise signal generator and a summing element is provided. The noise signal generator is configured to receive multiple noise settings and output multiple noise signals corresponding to the multiple noise settings. The summing element is configured to receive a transmit data signal and the multiple noise signals, sum one or more of the multiple noise signals with the transmit data signal, and output to a transmit driver configured to generate one of a single-ended and a differential signal based on the sum of the one or more of the multiple noise signals with the transmit data signal.

    Abstract translation: 提供包括噪声信号发生器和求和元件的发射机。 噪声信号发生器被配置为接收多个噪声设置并输出对应于多个噪声设置的多个噪声信号。 所述求和元件被配置为接收发射数据信号和所述多个噪声信号,用所述发射数据信号求和所述多个噪声信号中的一个或多个,并将其输出到被配置为产生单端和差分 基于多个噪声信号中的一个或多个与发送数据信号的和的信号。

    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
    6.
    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。

    Controlled noise injection in transmitter for noise margin testing
    7.
    发明授权
    Controlled noise injection in transmitter for noise margin testing 有权
    发射机中控制噪声注入用于噪声容限测试

    公开(公告)号:US09172498B2

    公开(公告)日:2015-10-27

    申请号:US13852643

    申请日:2013-03-28

    Abstract: A transmitter comprising a noise signal generator, a summing element configured to generate a signal as a sum of an output of the noise signal generator and a transmit data signal, and a transmit driver configured to generate an output signal based on the sum. Also, a method of calibrating a signal-to-noise ratio (SNR) for a transmitter comprising transmitting a first signal comprising a data signal with no noise signal, capturing the first signal, transmitting a second signal comprising a noise signal, wherein both an amplitude and a phase of the noise signal have been adjusted by a gain and phase control element, capturing the second signal, and determining the SNR corresponding to the captured first signal and the captured second signal, wherein the transmitter transmits the second signal using a transmit driver.

    Abstract translation: 一种发送器,包括噪声信号发生器,被配置为产生作为噪声信号发生器的输出和发送数据信号的和的信号的求和元件,以及配置成基于该和产生输出信号的发送驱动器。 此外,校准发射机的信噪比(SNR)的方法包括:发射包括没有噪声信号的数据信号的第一信号,捕获第一信号,发送包括噪声信号的第二信号,其中, 已经通过增益和相位控制元件调整噪声信号的幅度和相位,捕获第二信号,并且确定与所捕获的第一信号和所捕获的第二信号相对应的SNR,其中发射机使用传输 司机。

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