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    Adaptive Error Correcting Code for Data Communications Over a Plastic Optical Fibre
    1.
    发明申请
    Adaptive Error Correcting Code for Data Communications Over a Plastic Optical Fibre 有权
    塑料光纤数据通信的自适应纠错码

    公开(公告)号：US20120250785A1

    公开(公告)日：2012-10-04

    申请号：US13410614

    申请日：2012-03-02

    Applicant: Carlos Pardo Vidal ,  Rúben Pérez de Aranda Alonso

    Inventor： Carlos Pardo Vidal ,  Rúben Pérez de Aranda Alonso

    IPC: H04L27/00

    CPC classification number: H04L1/004 ,  H03M13/152 ,  H03M13/251 ,  H03M13/35

    Abstract: An efficient coding and modulation system for transmission of digital data over plastic optical fibres is disclosed. The digital signal is coded by a three-level coset coding. The spectral efficiency of the system is configurable by selecting the number of bits to be processed in each of the levels. The first level applies to the digital data a binary BCH coding and performs coset partitioning by constellation mapping and lattice transformations. Similarly, second level applies another binary BCH coding, which may be performed selectably in accordance with the desired configuration by two BCH codes with substantially the same coding rate, operating on codewords of different sizes. The third level is uncoded. The second and third levels undergo mapping and lattice transformation. After an addition of the levels, a second-stage lattice transformation is performed to obtain a zero-mean constellation. The symbols output from such three-level coset coder are then further modulated.

    Abstract translation: 公开了一种用于通过塑料光纤传输数字数据的有效的编码和调制系统。 数字信号由三级陪集编码编码。 通过选择在每个级别中要处理的位数来配置系统的频谱效率。 第一级适用于数字数据二进制BCH编码，并通过星座映射和网格变换进行陪集分割。 类似地，第二级应用另一个二进制BCH编码，其可以根据具有基本上相同编码率的两个BCH码根据期望的配置进行可选择的操作，在不同大小的码字上操作。 第三级未编码。 第二级和第三级进行映射和格子转换。 在增加电平之后，执行第二阶段晶格变换以获得零平均星座。 然后进一步调制从这种三级陪集编码器输出的符号。

    SIGNALLING METHOD AND APPARATUS USING FREQUENCY PILOTS BASED ON COMPLEMENTARY SEQUENCES
    6.
    发明申请
    SIGNALLING METHOD AND APPARATUS USING FREQUENCY PILOTS BASED ON COMPLEMENTARY SEQUENCES 审中-公开
    使用基于补码序列的频率飞行员的信号化方法和装置

    公开(公告)号：US20110044406A1

    公开(公告)日：2011-02-24

    申请号：US12747528

    申请日：2007-12-13

    Applicant: Jose Maria Insenser Farre ,  Daniel Hernanz Chiloeches ,  Miguel Virseda Morena ,  Carlos Pardo Vidal ,  Ignacio Lacadena Garcia-Gallo

    Inventor： Jose Maria Insenser Farre ,  Daniel Hernanz Chiloeches ,  Miguel Virseda Morena ,  Carlos Pardo Vidal ,  Ignacio Lacadena Garcia-Gallo

    IPC: H04L27/20 ,  H04L27/00

    CPC classification number: H04L27/2613 ,  H04L5/0053

    Abstract: The invention relates to a signalling method using orthogonal frequency division multiplexing (OFDM), based on a preamble comprising N dedicated carriers (frequency pilots), the position and modulation of which is defined by one or more concatenated complementary sequences of length N. Complementary sequences are those for which the sum of the autocorrelations thereof is zero except for zero shift, i.e. a Krönecker delta. The main purpose of said preamble is to signal the basic properties of the transmitted signal and to provide a first estimation at the moment of time and frequency synchronisation. The preamble is multiplexed or sequenced temporally with the transmitted data using OFDM prior to the application of the inverse Fourier transform by the inverse fast Fourier transform (IFFT) block.

    Abstract translation: 本发明涉及一种使用正交频分复用（OFDM）的信令方法，其基于包括N个专用载波（频率导频）的前同步码，其位置和调制由长度为N的一个或多个级联的互补序列定义。互补序列 是除零偏移之外，其自相关性之和为零，即Kröneckerdelta。 所述前导码的主要目的是发信号通知发射信号的基本属性，并在时间和频率同步的时刻提供第一估计。 在通过快速傅立叶逆变换（IFFT）块应用逆傅立叶变换之前，前导码与使用OFDM的发射数据在时间上进行复用或排序。

    Self-calibrated sensor module for inkjet printing devices
    7.
    发明授权
    Self-calibrated sensor module for inkjet printing devices 有权
    用于喷墨打印设备的自校准传感器模块

    公开(公告)号：US06361139B1

    公开(公告)日：2002-03-26

    申请号：US09495037

    申请日：2000-01-31

    Applicant: Jordi M. Gómez ,  Carlos Pardo

    Inventor： Jordi M. Gómez ,  Carlos Pardo

    IPC: B41J29393

    CPC classification number: B41J29/393

    Abstract: A selfcalibrated sensor module for inkjet printing devices includes a new circuitry and a new calibration method to provide the best output signal independently of optical component functionality variations and external light source influences. The circuitry for processing the photodetector output signal is designed to process that signal by a bank of amplifiers or by an amplifier of variable gain and includes an input for adding an offset to the signal. The calibration system, implemented in a processing unit, calibrates the sensor module, firstly finding the level of light that should be applied to the LEDs to maximize it so as to grant the best signal possible, in terms of the signal to noise ratio (SNR), Secondly, it determines which amplification factor will be used in order to ensure that the resulting sampled signal is not saturated. Thirdly, it determines the necessary offset to be added to the signal to center it in the dynamic margin of the ADCs.

    Abstract translation: 用于喷墨打印设备的自校准传感器模块包括新的电路和新的校准方法，以独立于光学组件功能变化和外部光源影响提供最佳输出信号。用于处理光电检测器输出信号的电路被设计为通过 一组放大器或可变增益放大器，并且包括用于向该信号添加偏移的输入。在处理单元中实现的校准系统校准传感器模块，首先找到应该应用于该信号的光的水平 LED使其最大化，以便在信噪比（SNR）方面授予可能的最佳信号。其次，它确定将使用哪个放大因子，以确保所得到的采样信号不饱和。 第三，它确定要添加到信号中的必要偏移量，使其在ADC的动态余量中居中。

    Adaptive error correcting code for data communications over a plastic optical fibre
    8.
    发明授权
    Adaptive error correcting code for data communications over a plastic optical fibre 有权
    通过塑料光纤进行数据通信的自适应纠错码

    公开(公告)号：US08634450B2

    公开(公告)日：2014-01-21

    申请号：US13410614

    申请日：2012-03-02

    Applicant: Carlos Pardo Vidal ,  Rúben Pérez de Aranda Alonso

    Inventor： Carlos Pardo Vidal ,  Rúben Pérez de Aranda Alonso

    IPC: H04B1/38

    CPC classification number: H04L1/004 ,  H03M13/152 ,  H03M13/251 ,  H03M13/35

    Abstract: An efficient coding and modulation system for transmission of digital data over plastic optical fibers is disclosed. The digital signal is coded by a three-level coset coding. The spectral efficiency of the system is configurable by selecting the number of bits to be processed in each of the levels. The first level applies to the digital data a binary BCH coding and performs coset partitioning by constellation mapping and lattice transformations. Similarly, second level applies another binary BCH coding, which may be performed selectably in accordance with the desired configuration by two BCH codes with substantially the same coding rate, operating on codewords of different sizes. The third level is uncoded. The second and third levels undergo mapping and lattice transformation. After an addition of the levels, a second-stage lattice transformation is performed to obtain a zero-mean constellation. The symbols output from such three-level coset coder are then further modulated.

    Abstract translation: 公开了一种用于通过塑料光纤传输数字数据的有效的编码和调制系统。 数字信号由三级陪集编码编码。 通过选择在每个级别中要处理的位数来配置系统的频谱效率。 第一级适用于数字数据二进制BCH编码，并通过星座映射和网格变换进行陪集分割。 类似地，第二级应用另一个二进制BCH编码，其可以根据具有基本上相同编码率的两个BCH码根据期望的配置进行可选择的操作，在不同大小的码字上操作。 第三级未编码。 第二级和第三级进行映射和格子转换。 在增加电平之后，执行第二阶段晶格变换以获得零平均星座。 然后进一步调制从这种三级陪集编码器输出的符号。

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