公开(公告)号：US07673221B2

公开(公告)日：2010-03-02

申请号：US10046639

申请日：2001-10-26

申请人： Bin Li ,  Alberto Ginesi ,  Song Zhang

发明人： Bin Li ,  Alberto Ginesi ,  Song Zhang

IPC分类号： H03M13/00

CPC分类号： H04L1/0057 ,  H03M13/03 ,  H03M13/35 ,  H04L1/0009 ,  H04L1/0015 ,  H04L1/006

摘要： Apparatus and method for generating parameters used in coding data in a data transmission system. The method determines a number of possible coding parameters to satisfy a target coding gain and selects the best set of parameters that balance the code word length and the error rate. In this manner, a minimum coding gain may be used, which minimizes cross-talk on a transmission link.

摘要翻译： 用于产生用于数据传输系统中的数据编码的参数的装置和方法。 该方法确定多个可能的编码参数以满足目标编码增益并选择平衡码字长度和错误率的最佳参数集合。 以这种方式，可以使用最小的编码增益，其最小化传输链路上的串扰。

公开(公告)号：US07173978B2

公开(公告)日：2007-02-06

申请号：US09912068

申请日：2001-07-23

申请人： Song Zhang ,  Bin Li ,  Andrew Deczky ,  Alberto Ginesi

发明人： Song Zhang ,  Bin Li ,  Andrew Deczky ,  Alberto Ginesi

IPC分类号： H04L27/36

CPC分类号： H04L1/006 ,  H04L1/0041 ,  H04L1/0057 ,  H04L1/0066 ,  H04L1/0068 ,  H04L1/0069 ,  H04L5/023 ,  H04L27/2602

摘要： In a coding system for asymmetric digital subscriber line (ADSL) communications, a method of encoding a sequence of information bits is provided comprising the steps of dividing the information bits into encoding bits and parallel bits; encoding the encoding bits to produce encoded bits; mapping the encoded bits and the parallel bits into first and second pulse amplitude modulation (PAM) signals; and generating a quadrature amplitude modulation (QAM) signal from these first and second PAM signals. This method overcomes the decoder complexity that would otherwise be required due to the large QAM constellations involved for ADSL communications.

摘要翻译： 在用于非对称数字用户线（ADSL）通信的编码系统中，提供一种编码信息比特序列的方法，包括以下步骤：将信息比特划分为编码比特和并行比特; 对编码比特进行编码以产生编码比特; 将编码比特和并行比特映射到第一和第二脉冲幅度调制（PAM）信号中; 以及从这些第一和第二PAM信号产生正交幅度调制（QAM）信号。 该方法克服了由于ADSL通信涉及的大的QAM星座而将需要的解码器复杂度。

公开(公告)号：US07463678B2

公开(公告)日：2008-12-09

申请号：US10386391

申请日：2003-03-10

申请人： Alberto Ginesi ,  Song Zhang ,  Andrew Deczky ,  Duncan Baird ,  Christian Bourget

发明人： Alberto Ginesi ,  Song Zhang ,  Andrew Deczky ,  Duncan Baird ,  Christian Bourget

IPC分类号： H03H7/30 ,  H03H7/40 ,  H03K5/159

CPC分类号： H04L27/2607 ,  H04L25/03012 ,  H04L27/2608 ,  H04L2025/03414

摘要： A circuit and method is provided for reducing the effect of having potentially different sizes for an Inverse Discrete Fourier Transform (IDFT) at a transmitter and a Discrete Fourier Transform (DFT) at a receiver in a telecommunications system without requiring a change in the DFT's size. The method includes following steps. The first step includes determining whether the IDFT size is greater than, equal to, or less than the DFT size. The second step includes selecting a target impulse response length from a predefined set of impulse response lengths in accordance with a result the previous step. The third step includes training an equalizer at the receiver to the target impulse response length. The circuit comprises hardware and software for implementing the method.

摘要翻译： 提供了一种电路和方法，用于减少在电信系统的接收机处的发射机处的离散傅立叶逆变换（DFT）和离散傅立叶变换（DFT）具有潜在不同尺寸的影响，而不需要DFT尺寸的变化 。 该方法包括以下步骤。 第一步包括确定IDFT大小是否大于，等于或小于DFT大小。 第二步骤包括根据前一步骤的结果从预定义的一组脉冲响应长度中选择目标脉冲响应长度。 第三步包括将接收机的均衡器训练到目标脉冲响应长度。 该电路包括实现该方法的硬件和软件。

公开(公告)号：US09008233B2

公开(公告)日：2015-04-14

申请号：US13503206

申请日：2010-10-19

申请人： Paolo Burzigotti ,  Alberto Ginesi

发明人： Paolo Burzigotti ,  Alberto Ginesi

IPC分类号： H04L27/00 ,  H04B7/185 ,  H04L27/20 ,  H04L27/233

CPC分类号： H04B7/18515 ,  H04L27/0014 ,  H04L27/2017 ,  H04L27/2335

摘要： An Automatic Identification System—AIS—receiver comprising at least one processing section (PS1, PS2) for synchronizing, demodulating and detecting AIS messages contained in a received signal, said processing steps being carried out separately for a plurality of frequency sub-bands (SB1, SB2, SB3) spanning an AIS channel (CH1, CH2); the receiver being characterized in that: said sub-bands overlap with each others; and said or each processing section is adapted for synchronizing, demodulating and detecting said AIS messages within each sub-band on the basis of timing error and carrier frequency estimations obtained from filtered replicas of said received signal, propagating along respective auxiliary signal paths.

摘要翻译： 一种自动识别系统-RSA接收机，包括用于同步，解调和检测包含在接收信号中的AIS消息的至少一个处理部分（PS1，PS2），所述处理步骤分别针对多个频率子带（SB1 ，SB2，SB3）跨越AIS信道（CH1，CH2）; 所述接收机的特征在于：所述子带彼此重叠; 并且所述或每个处理部分适于基于从所述接收信号的滤波副本获得的定时误差和沿相应的辅助信号路径传播的载波频率估计来同步，解调和检测每个子带内的所述AIS消息。

公开(公告)号：US06693957B1

公开(公告)日：2004-02-17

申请号：US09223818

申请日：1998-12-31

申请人： Michael John Wingrove ,  Alberto Ginesi ,  Gwendolyn Kate Harris ,  Robert Scott McClennon

发明人： Michael John Wingrove ,  Alberto Ginesi ,  Gwendolyn Kate Harris ,  Robert Scott McClennon

IPC分类号： H04L506

CPC分类号： H04L27/0002 ,  H04L1/20 ,  H04L1/24 ,  H04L5/023

摘要： An adaptive DMT modem determines, as part of a startup sequence, subscriber loop conditions. One or more loop condition adaptation operations are then performed to reduce the complexity of the filters employed in the modem, to reduce the power dissipated in the modem, to optimize performance of the modem or to reduce the likelihood of EMI being radiated into the premises of a subscriber.

摘要翻译： 自适应DMT调制解调器确定作为启动序列的一部分，用户环路条件。 然后执行一个或多个循环条件适应操作以降低在调制解调器中使用的滤波器的复杂度，以减少在调制解调器中消耗的功率，以优化调制解调器的性能或者降低EMI被辐射到 订阅者

公开(公告)号：US07536197B2

公开(公告)日：2009-05-19

申请号：US09919574

申请日：2001-07-30

申请人： Alberto Ginesi ,  Francois Tremblay ,  Scott McClennon

发明人： Alberto Ginesi ,  Francois Tremblay ,  Scott McClennon

IPC分类号： H04B7/00 ,  H04Q7/20

CPC分类号： H04B3/32 ,  H04L1/0001 ,  H04L5/023

摘要： Methods for reducing power required for transmitting a signal from a first transceiver to a second transceiver are described. The methods comprise the steps of estimating an excess amount of power used by the first transceiver for transmitting the signal, reducing the first transceiver's power use by the excess amount of power to a reduced power level, and transmitting the signal from the first transceiver using the reduced power level. The reduced power level achieves a transmission rate of the signal within a predefined tolerance of its preferable rate.

公开(公告)号：US07409024B2

公开(公告)日：2008-08-05

申请号：US10930864

申请日：2004-09-01

申请人： Alberto Ginesi ,  Domenico Fittipaldi ,  Alan Bigi ,  Riccardo De Gaudenzi

发明人： Alberto Ginesi ,  Domenico Fittipaldi ,  Alan Bigi ,  Riccardo De Gaudenzi

IPC分类号： H04L7/04

CPC分类号： H04L27/0014 ,  H04L2027/0032 ,  H04L2027/0046 ,  H04L2027/0057 ,  H04L2027/0067

摘要： A process for providing a phase synchronization of a pilot aided carrier of an input digital signal z(k), the signal z(k) having signal fields of Ls symbol signals, namely a block of LP pilot symbol signals ZP(k) and a data field of (Ls−LP) data symbol signals Zd(k), and characterized for each signal field (l) by: extracting the pilot symbol signals ZP(k) and calculating an unwrapped phase estimate {circumflex over (θ)}(lLs) over the pilot block of said signal field (1) and: interpolating said unwrapped phase estimates of successive signal fields (l, +1 . . . ) with a Wiener interpolator having M taps to obtain interpolated phase estimates having a Minimum Mean Square Error; providing linear interpolation between said interpolated phase estimates to obtain phase correction estimates ({circumflex over (θ)}(ks)) over the data field of said signal fields; calculating from said phase correction estimates ({circumflex over (θ)}(ks)) a phase correction (e−j{circumflex over (θ)}(ks)) to be applied to said signal Z(k).

摘要翻译： 一种用于提供输入数字信号z（k）的导频辅助载波的相位同步的过程，具有L s个符号信号的信号字段的信号z（k），即L < （>）L> P 导频符号信号Z ^{（k）和数据字段 （k），数据符号信号Z（d），（k），并通过以下方式对每个信号字段（1）进行表征：提取导频符号信号Z < 并且在所述信号字段（1）的导频块上计算展开的相位估计（在（θ）}上的旋转（θL），并且： 用具有M个抽头的维纳内插器内插所述连续信号场（l，+1 ...）的所述展开相位估计，以获得具有最小均方误差的内插相位估计; 在所述内插相位估计之间提供线性内插，以获得在所述信号场的数据场上的相位校正估计（{回旋（θ）}（k S））; 根据所述相位校正估计（{circumflex over（θ）}（k> s））计算相位校正（e S） SUP> s ））应用于所述信号Z（k）。}