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    FORWARD ERROR CORRECTION WITH TURBO/NON-TURBO SWITCHING
    1.
    发明申请
    FORWARD ERROR CORRECTION WITH TURBO/NON-TURBO SWITCHING 有权
    带涡轮/非涡轮开关的前向错误校正

    公开(公告)号：US20150326253A1

    公开(公告)日：2015-11-12

    申请号：US14704385

    申请日：2015-05-05

    申请人： Cisco Technology, Inc.

    发明人： Andreas Bisplinghoff ,  Stefan Langenbach ,  Norbert Beck

    IPC分类号： H03M13/37 ,  H03M13/45 ,  H03M13/25 ,  H03M13/11 ,  H03M13/00

    CPC分类号： H03M13/3746 ,  H03M13/1102 ,  H03M13/1111 ,  H03M13/258 ,  H03M13/2957 ,  H03M13/336 ,  H03M13/3715 ,  H03M13/3784 ,  H03M13/45 ,  H03M13/458 ,  H03M13/616 ,  H03M13/6325 ,  H03M13/6337 ,  H04L1/0045

    摘要： A forward error correction and differentially encoded signal obtained via a communication channel is supplied to a soft-input soft-output (SISO) differential decoder that is bi-directionally coupled to a SISO forward error correction decoder. Over a first portion of a plurality of decoding iterations of the differentially encoded signal, the SISO differential decoder and the SISO forward error correction decoder are operated in a turbo decoding mode in which decoded messages generated by the SISO differential decoder are supplied to the SISO forward error correction decoder and forward error correction messages are supplied to the differential decoder. Over a second portion of the plurality of decoding iterations of the differentially encoded signal, the SISO forward error correction decoder is operated in a non-turbo decoding mode without any messages passing to and from the SISO differential decoder. Decoder output is obtained from the SISO forward error correction decoder.

    摘要翻译： 经由通信信道获得的前向纠错和差分编码信号被提供给双向耦合到SISO前向纠错解码器的软输入软输出（SISO）差分解码器。 在差分编码信号的多个解码迭代的第一部分中，SISO差分解码器和SISO前向纠错解码器以turbo解码模式操作，其中由SISO差分解码器产生的解码信息被提供给SISO前向 纠错解码器和前向纠错消息被提供给差分解码器。 在差分编码信号的多个解码迭代的第二部分上，SISO前向纠错解码器以非turbo解码模式操作，而没有任何消息传送到SISO差分解码器。 解码器输出从SISO前向纠错解码器获得。

    RATE ADAPTIVE TURBO FORWARD ERROR CORRECTION
    2.
    发明申请
    RATE ADAPTIVE TURBO FORWARD ERROR CORRECTION 有权
    速率自适应涡轮前向纠错

    公开(公告)号：US20150326252A1

    公开(公告)日：2015-11-12

    申请号：US14704377

    申请日：2015-05-05

    申请人： Cisco Technology, Inc.

    发明人： Andreas Bisplinghoff

    IPC分类号： H03M13/35 ,  H04L27/18 ,  H04L27/04 ,  H03M13/25

    CPC分类号： H04L1/007 ,  H03M13/23 ,  H03M13/256 ,  H03M13/258 ,  H03M13/353 ,  H04L1/0003 ,  H04L1/0016 ,  H04L1/0041 ,  H04L1/0044 ,  H04L1/005 ,  H04L1/0058 ,  H04L1/006 ,  H04L27/04 ,  H04L27/18 ,  H04L27/22 ,  H04L27/2332 ,  H04L27/362

    摘要： Techniques herein support enhanced multi-rate encoding and decoding of signals in multiple formats. In one embodiment, input data is received at a first device at one of a plurality of data rates. Encoder units are activated to produce streams of encoded input data. The encoder units are configured to operate at the same data rate. Differential encoding operations are performed to produce an encoded output stream. The encoded output stream is modulated for transmission to a second device. In another embodiment, a first device receives an encoded data stream that is transmitted from a second device. The modulated data stream includes encoded data at one of a plurality of data rates. Differential decoding is performed on the encoded data by activating one or more of a plurality of decoder units, where each of the plurality of decoder units is configured to operate at the same rate.

    摘要翻译： 这里的技术支持多种格式的信号的增强的多速率编码和解码。 在一个实施例中，以多个数据速率中的一个以第一设备接收输入数据。 编码器单元被激活以产生编码输入数据流。 编码器单元配置为以相同的数据速率运行。 执行差分编码操作以产生编码的输出流。 编码的输出流被调制以传输到第二设备。 在另一实施例中，第一设备接收从第二设备发送的编码数据流。 调制数据流包括以多个数据速率之一的编码数据。 通过激活多个解码器单元中的一个或多个来对编码数据执行差分解码，其中多个解码器单元中的每一个被配置为以相同的速率操作。

    Rate adaptive turbo forward error correction
    3.
    发明授权
    Rate adaptive turbo forward error correction 有权

    公开(公告)号：US10148390B2

    公开(公告)日：2018-12-04

    申请号：US15632492

    申请日：2017-06-26

    申请人： Cisco Technology, Inc.

    发明人： Andreas Bisplinghoff

    IPC分类号： H03M13/00 ,  H04L1/00 ,  H03M13/35 ,  H03M13/25 ,  H04L27/18 ,  H04L27/04 ,  H04L27/233 ,  H04L27/36 ,  H03M13/23 ,  H04L27/22

    摘要： Techniques herein support enhanced multi-rate encoding and decoding of signals in multiple formats. In one embodiment, input data is received at a first device at one of a plurality of data rates. Encoder units are activated to produce streams of encoded input data. The encoder units are configured to operate at the same data rate. Differential encoding operations are performed to produce an encoded output stream. The encoded output stream is modulated for transmission to a second device. In another embodiment, a first device receives an encoded data stream that is transmitted from a second device. The modulated data stream includes encoded data at one of a plurality of data rates. Differential decoding is performed on the encoded data by activating one or more of a plurality of decoder units, where each of the plurality of decoder units is configured to operate at the same rate.

    Rate adaptive turbo forward error correction
    6.
    发明授权
    Rate adaptive turbo forward error correction 有权
    速率自适应turbo前向纠错

    公开(公告)号：US09537513B2

    公开(公告)日：2017-01-03

    申请号：US14704377

    申请日：2015-05-05

    申请人： Cisco Technology, Inc.

    发明人： Andreas Bisplinghoff

    IPC分类号： H03M13/00 ,  H03M13/35 ,  H03M13/25 ,  H04L27/18 ,  H04L27/04 ,  H04L27/233 ,  H04L27/36 ,  H04L1/00

    CPC分类号： H04L1/007 ,  H03M13/23 ,  H03M13/256 ,  H03M13/258 ,  H03M13/353 ,  H04L1/0003 ,  H04L1/0016 ,  H04L1/0041 ,  H04L1/0044 ,  H04L1/005 ,  H04L1/0058 ,  H04L1/006 ,  H04L27/04 ,  H04L27/18 ,  H04L27/22 ,  H04L27/2332 ,  H04L27/362

    摘要： Techniques herein support enhanced multi-rate encoding and decoding of signals in multiple formats. In one embodiment, input data is received at a first device at one of a plurality of data rates. Encoder units are activated to produce streams of encoded input data. The encoder units are configured to operate at the same data rate. Differential encoding operations are performed to produce an encoded output stream. The encoded output stream is modulated for transmission to a second device. In another embodiment, a first device receives an encoded data stream that is transmitted from a second device. The modulated data stream includes encoded data at one of a plurality of data rates. Differential decoding is performed on the encoded data by activating one or more of a plurality of decoder units, where each of the plurality of decoder units is configured to operate at the same rate.

    摘要翻译： 这里的技术支持多种格式的信号的增强的多速率编码和解码。 在一个实施例中，以多个数据速率中的一个以第一设备接收输入数据。 编码器单元被激活以产生编码输入数据流。 编码器单元配置为以相同的数据速率运行。 执行差分编码操作以产生编码的输出流。 编码的输出流被调制以传输到第二设备。 在另一实施例中，第一设备接收从第二设备发送的编码数据流。 调制数据流包括以多个数据速率之一的编码数据。 通过激活多个解码器单元中的一个或多个来对编码数据执行差分解码，其中多个解码器单元中的每一个被配置为以相同的速率操作。

    Random noise generation
    7.
    发明授权
    Random noise generation 有权

    公开(公告)号：US11550547B2

    公开(公告)日：2023-01-10

    申请号：US16732603

    申请日：2020-01-02

    申请人： Cisco Technology, Inc.

    发明人： Mohammad Ali Sedaghat ,  Christopher R. Fludger ,  Andreas Bisplinghoff ,  Gregory Bryant

    IPC分类号： G06F7/58 ,  G01R31/3177 ,  H03K3/84

    摘要： A random noise generator for generating a plurality of random noise samples per clock cycle, the noise samples having a distribution. The random noise generator comprises at least a first comparator unit and a second comparator unit, the first comparator unit configured to generate a first plurality of samples representing a high-probability part of the distribution and the second comparator unit configured to generate a second plurality of samples representing a low-probability part of the distribution; and a random selection unit connected to at least the first comparator unit and the second comparator unit. The random selection unit is configured to receive the first plurality of samples generated by the first comparator unit and the second plurality of samples generated by the second comparator unit, to output a random selection of samples from the first plurality of samples and the second plurality of samples.

    Accurate and Fast In-Service Estimation of Input Bit Error Ratio of Low Density Parity Check Decoders
    10.
    发明申请
    Accurate and Fast In-Service Estimation of Input Bit Error Ratio of Low Density Parity Check Decoders 审中-公开
    低密度奇偶校验解码器的输入误码率的准确和快速的在线估计

    公开(公告)号：US20150363247A1

    公开(公告)日：2015-12-17

    申请号：US14304147

    申请日：2014-06-13

    申请人： Cisco Technology, Inc.

    发明人： Andreas Bisplinghoff ,  Stefan Langenbach

    IPC分类号： G06F11/07 ,  H03M13/11

    CPC分类号： G06F11/076 ,  H03M13/1105 ,  H03M13/612

    摘要： A device receives signals over a communication medium and uses a low density parity check decoder to decode data in the signals. A number of unsatisfied parity checks are counted prior to a first decoding iteration of the low density parity check decoder on a basis of log likelihood ratios computed from the signals. An operational characteristic of the low density parity check decoder is computed based on an accumulated number of unsatisfied parity checks.

    摘要翻译： 设备通过通信介质接收信号，并使用低密度奇偶校验解码器对信号中的数据进行解码。 基于从信号计算的对数似然比，在低密度奇偶校验解码器的第一解码迭代之前计数多个不满足的奇偶校验。 低密度奇偶校验解码器的操作特性基于不满足奇偶校验的累计数量来计算。