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1. 发明授权

US07802172B2 Variable-rate low-density parity check codes with constant blocklength 有权
标题翻译：具有恒定块长度的可变速率低密度奇偶校验码
公开(公告)号：US07802172B2
公开(公告)日：2010-09-21
申请号：US11471439
申请日：2006-06-20
申请人： Andres I. Vila Casado , Wen-Yen Weng , Richard D. Wesel , Nicola Moschini , Massimiliano Siti , Stefano Valle , Engling Yeo
发明人： Andres I. Vila Casado , Wen-Yen Weng , Richard D. Wesel , Nicola Moschini , Massimiliano Siti , Stefano Valle , Engling Yeo
IPC分类号： G06F11/00 , H03M13/00
CPC分类号： H03M13/1185
摘要： Low density parity check (LDPC) codes (LDPCCs) have an identical code blocklength and different code rates. At least one of the rows of a higher-rate LDPC matrix is obtained by combining a plurality of rows of a lower-rate LDPC matrix with the identical code blocklength as the higher-rate LDPC matrix.
摘要翻译：低密度奇偶校验（LDPC）码（LDPCC）具有相同的码块长度和不同的码率。通过将具有相同代码块长度的较低速率LDPC矩阵的多行组合为较高速率LDPC矩阵来获得较高速率LDPC矩阵的行中的至少一行。

2. 发明授权

US07676006B2 Method and system for estimating the doppler spread in radio mobile telecommunication systems and computer program product therefor 有权
标题翻译：用于估计无线电移动电信系统中的多普勒扩展的方法和系统及其计算机程序产品
公开(公告)号：US07676006B2
公开(公告)日：2010-03-09
申请号：US10930733
申请日：2004-08-31
申请人： Stefano Valle
发明人： Stefano Valle
IPC分类号： H03D1/04
CPC分类号： H04B7/01 , H04B17/336
摘要： The Doppler spread associated to a transmission channel with a gain represented by a random process, is estimated by transmitting on the channel a digital signal (DPCCHI,Q), which comprises at least one pilot signal, which in turn comprises fields of known symbols, and estimating, on the basis of the pilot signal(DPCCHI,Q), the channel so as to generate a signal indicating the aforesaid gain. There is then detected the zero-crossing rate (η) of the aforesaid signal during a given time interval, and there is also estimated the signal-to-noise ratio (SNR) associated to the channel. The bandwidth ({circumflex over (f)}D) of the aforesaid random process is estimated according to a reference quantity (ID(2)), which comprises: a first term ({circumflex over (η)}2π2), representing an estimate ({circumflex over (η)}) of said zero-crossing rate (η); and a second term ( I N ( 2 ) - η ^ 2 ⁢ π 2 ⁢ I N ( 0 ) 2 ⁢ SNR ) , which includes said signal-to-noise ratio of the channel.
摘要翻译：通过在信道上发送包括至少一个导频信号的数字信号（DPCCHI，Q）来估计与具有由随机过程表示的增益的传输信道相关联的多普勒扩展，所述数字信号（DPCCHI，Q）又包括已知符号的字段，以及基于所述导频信号（DPCCHI，Q）估计所述信道，以产生指示所述增益的信号。然后在给定的时间间隔期间检测到上述信号的过零率（＆egrgr），并且还估计与信道相关联的信噪比（SNR）。根据参考数量（ID（2））来估计上述随机过程的带宽（（f）} D），其包括：第一项（{echo（（＆eegr））} 2＆pgr; 2），表示所述过零率（＆eegr;）的估计值（{circumflex over（＆eegr;）}）; 以及第二项（I N（2） - ＆eegr; ^ 2＆pgr; 2 I N（0）2 SNR），其包括信道的所述信噪比。

3. 发明授权

US07450663B2 Interpolation for use in channel estimation 有权
标题翻译：插值用于信道估计
公开(公告)号：US07450663B2
公开(公告)日：2008-11-11
申请号：US10508928
申请日：2003-03-17
申请人： Donato Ettorre , Maurizio Graziano , Bruno Melis , Andrea Finotello , Alfredo Ruscitto , Stefano Valle , Lorena Simoni
发明人： Donato Ettorre , Maurizio Graziano , Bruno Melis , Andrea Finotello , Alfredo Ruscitto , Stefano Valle , Lorena Simoni
IPC分类号： H04B1/06 , H04L5/02
CPC分类号： H04L25/0232
摘要： A method for the estimation of the transfer function of a transmission channel in a receiving system of UMTS type envisages the computation of a plurality of channel coefficients, included among known channel coefficients corresponding to pilot symbols, through the reiteration of an interpolation algorithm, capable of calculating an intermediate point (Z, f(Z)) between a first extreme and a second extreme of a determined interval, the first extreme being formed by at least two known points and the second extreme being formed by at least one known point, the intermediate point to be calculated having as abscissa (Z) the abscissa value of the mean point between the points defining the interval rounded off to the integer closest to the first extreme, and having as ordinate (F(Z)) the arithmetic average between the ordinate of the known point of the second extreme and the ordinate of a point, chosen between the two known points of the first extreme, having a distance from the intermediate point equal to the distance between the intermediate point and the known point of the second extreme.
摘要翻译：用于估计UMTS类型的接收系统中的传输信道的传递函数的方法设想通过重复插值算法来计算包括在与导频符号相对应的已知信道系数之中的多个信道系数，能够计算确定间隔的第一极限和第二极限之间的中间点（Z，f（Z）），所述第一极值由至少两个已知点形成，所述第二极值由至少一个已知点形成，要计算的中间点具有横坐标（Z），将定义间隔的间隔的平均点的横坐标值舍入到最接近第一极限的整数，并且具有纵坐标（F（Z））之间的算术平均值在第二极端的已知点的纵坐标和在第一极端的两个已知点之间选择的点的纵坐标具有与中间物的距离点等于中间点与第二极限的已知点之间的距离。

4. 发明申请

US20070011569A1 Variable-rate low-density parity check codes with constant blocklength 有权
标题翻译：具有恒定块长度的可变速率低密度奇偶校验码
公开(公告)号：US20070011569A1
公开(公告)日：2007-01-11
申请号：US11471439
申请日：2006-06-20
申请人： Andres Vila Casado , Wen-Yen Weng , Richard Wesel , Nicola Moschini , Massimiliano Siti , Stefano Valle , Engling Yeo
发明人： Andres Vila Casado , Wen-Yen Weng , Richard Wesel , Nicola Moschini , Massimiliano Siti , Stefano Valle , Engling Yeo
IPC分类号： H03M13/00
CPC分类号： H03M13/1185
摘要： Low density parity check (LDPC) codes (LDPCCs) have an identical code blocklength and different code rates. At least one of the rows of a higher-rate LDPC matrix is obtained by combining a plurality of rows of a lower-rate LDPC matrix with the identical code blocklength as the higher-rate LDPC matrix.
摘要翻译：低密度奇偶校验（LDPC）码（LDPCC）具有相同的码块长度和不同的码率。通过将具有相同代码块长度的较低速率LDPC矩阵的多行组合为较高速率LDPC矩阵来获得较高速率LDPC矩阵的行中的至少一行。

5. 发明申请

US20050153701A1 Interpolation for use in channel estimation 有权
标题翻译：插值用于信道估计
公开(公告)号：US20050153701A1
公开(公告)日：2005-07-14
申请号：US10508928
申请日：2003-03-17
申请人： Donato Ettore , Maurizio Graziano , Bruno Melis , Andrea Finotello , Alfredo Ruscitto , Stefano Valle , Lorena Simoni
发明人： Donato Ettore , Maurizio Graziano , Bruno Melis , Andrea Finotello , Alfredo Ruscitto , Stefano Valle , Lorena Simoni
IPC分类号： H04L25/02 , H04Q7/20
CPC分类号： H04L25/0232
摘要： A method for the estimation of the transfer function of a transmission channel in a receiving system of UMTS type envisages the computation of a plurality of channel coefficients, included among known channel coefficients corresponding to pilot symbols, through the reiteration of an interpolation algorithm, capable of calculating an intermediate point (Z, f(Z)) between a first extreme and a second extreme of a determined interval, the first extreme being formed by at least two known points and the second extreme being formed by at least one known point, the intermediate point to be calculated having as abscissa (Z) the abscissa value of the mean point between the points defining the interval rounded off to the integer closest to the first extreme, and having as ordinate (F(Z)) the arithmetic average between the ordinate of the known point of the second extreme and the ordinate of a point, chosen between the two known points of the first extreme, having a distance from the intermediate point equal to the distance between the intermediate point and the known point of the second extreme.
摘要翻译：用于估计UMTS类型的接收系统中的传输信道的传递函数的方法设想通过重复插值算法来计算包括在与导频符号相对应的已知信道系数之中的多个信道系数，能够计算确定间隔的第一极限和第二极限之间的中间点（Z，f（Z）），所述第一极值由至少两个已知点形成，所述第二极值由至少一个已知点形成，要计算的中间点具有横坐标（Z），将定义间隔的间隔的平均点的横坐标值舍入到最接近第一极限的整数，并且具有纵坐标（F（Z））之间的算术平均值在第二极端的已知点的纵坐标和在第一极端的两个已知点之间选择的点的纵坐标具有与中间物的距离点等于中间点与第二极限的已知点之间的距离。

6. 发明授权

US08675756B2 Method for identifying received symbols corrupted by burst noise and related device 有权
标题翻译：用于识别由突发噪声和相关设备损坏的接收符号的方法
公开(公告)号：US08675756B2
公开(公告)日：2014-03-18
申请号：US13189769
申请日：2011-07-25
申请人： Angelo Poloni , Stefano Valle , Stefano Vincenti
发明人： Angelo Poloni , Stefano Valle , Stefano Vincenti
IPC分类号： H04L5/12 , H04L23/02
CPC分类号： H04L1/0045 , H03M13/255
摘要： A method for identifying a corrupted received signal that includes symbols is described. Each symbol may have a value of a Galois field associated therewith. The receiver may be configured to store a logarithm of normalized probability mass functions and corresponding Galois field values for each of the symbols. The normalized probability mass functions may be normalized with respect to a greatest probability mass function of a given symbol. The method may include comparing, for each symbol, a logarithm of normalized probability of an n-th best probability value with a respective threshold, counting a number of the logarithms that exceed the respective threshold and generating, for each symbol, a score corresponding to the number. The method may also include calculating a moving average of the scores, and comparing the moving average with an output threshold and flagging a just received symbol as corrupted based upon the comparison.
摘要翻译：描述了用于识别包括符号的损坏的接收信号的方法。每个符号可以具有与其相关联的伽罗瓦域的值。接收机可以被配置为存储用于每个符号的归一化概率质量函数和对应的伽罗瓦域值的对数。归一化概率质量函数可以相对于给定符号的最大概率质量函数进行归一化。该方法可以包括对于每个符号比较具有相应阈值的第n个最佳概率值的归一化概率的对数，对超过相应阈值的对数进行计数，并且对于每个符号，生成对应于号码。该方法还可以包括计算分数的移动平均值，以及将移动平均值与输出阈值进行比较，并且基于比较标记刚被接收的符号被破坏。

7. 发明申请

US20120020400A1 METHOD FOR IDENTIFYING RECEIVED SYMBOLS CORRUPTED BY BURST NOISE AND RELATED DEVICE 有权
标题翻译：识别由BURST噪声和相关设备破坏的接收符号的方法
公开(公告)号：US20120020400A1
公开(公告)日：2012-01-26
申请号：US13189769
申请日：2011-07-25
申请人： Angelo POLONI , Stefano Valle , Stefano Vincenti
发明人： Angelo POLONI , Stefano Valle , Stefano Vincenti
IPC分类号： H04B3/46
CPC分类号： H04L1/0045 , H03M13/255
摘要： A method for identifying a corrupted received signal at a receiver is described. A received signal may include symbols. Each symbol may have a value of a Galois field associated therewith. The receiver may be configured to store a logarithm of normalized probability mass functions and corresponding Galois field values for each of the plurality of symbols. The normalized probability mass functions may be normalized with respect to a greatest probability mass function of a given symbol of the plurality of symbols. The method may include comparing, for each of the plurality of symbols, a logarithm of normalized probability of an n-th best probability value with a respective threshold, counting a number of the logarithms that exceed the respective threshold and generating, for each of the plurality of symbols, a score corresponding to the number. The method may also include calculating a moving average of the scores, and comparing the calculated moving average with an output threshold and flagging a just received one of the plurality of symbols as corrupted based upon the comparison.
摘要翻译：描述了在接收机处识别受损的接收信号的方法。接收到的信号可以包括符号。每个符号可以具有与其相关联的伽罗瓦域的值。接收机可以被配置为存储用于多个符号中的每一个的归一化概率质量函数的对数和对应的伽罗瓦域值。归一化概率质量函数可以相对于多个符号的给定符号的最大概率质量函数被归一化。该方法可以包括对于多个符号中的每一个，比较具有相应阈值的第n个最佳概率值的归一化概率的对数，对超过相应阈值的对数进行计数，并且对于每个多个符号，一个分数对应的数字。该方法还可以包括计算分数的移动平均值，以及将计算出的移动平均值与输出阈值进行比较，并且基于比较将多个符号中刚刚接收到的符号标记为已损坏。

8. 发明授权

US07770092B2 Method for iterative decoding in a digital system and apparatus implementing the method 有权
标题翻译：数字系统中的迭代解码方法和实现该方法的装置
公开(公告)号：US07770092B2
公开(公告)日：2010-08-03
申请号：US11323909
申请日：2005-12-29
申请人： Andrea Concil , Andrea Giorgi , Stefano Valle
发明人： Andrea Concil , Andrea Giorgi , Stefano Valle
IPC分类号： H03M13/03
CPC分类号： H03M13/2957 , H03M13/3911 , H03M13/3922 , H03M13/3927 , H03M13/6511
摘要： In a digital system using a turbo code, a method for performing iterative decoding in accordance with a Log-MAP Algorithm comprises the steps of:—generating a look-up table comprising a plurality of values representative of a correcting factor;—performing a first calculation to obtain a forward metric;—performing a second calculation to obtain a backward metric;—performing a third calculation to obtain a log-likelihood ratio for every information bit to be decoded. In accordance with the method, at least one and no more than two of such calculations are performed by the use of said look-up table for implementing the Log-MAP decoding algorithm and the remaining calculations are performed implementing a Max-Log-MAP decoding algorithm.
摘要翻译：在使用turbo码的数字系统中，根据Log-MAP算法执行迭代解码的方法包括以下步骤： - 生成包括表示校正因子的多个值的查找表; - 执行第一计算以获得前向度量; - 执行第二计算以获得反向度量; - 执行第三计算以获得要解码的每个信息比特的对数似然比。根据该方法，通过使用用于实现Log-MAP解码算法的查找表来执行至少一个且不超过两个这样的计算，并且执行剩余的计算，以实现Max-Log-MAP解码算法。

9. 发明申请

US20090221246A1 METHOD AND SYSTEM FOR CALIBRATING QUADRATURE MODULATORS 有权
标题翻译：校准调制器的方法和系统
公开(公告)号：US20090221246A1
公开(公告)日：2009-09-03
申请号：US12040690
申请日：2008-02-29
申请人： Angelo POLONI , Stefano VALLE
发明人： Angelo POLONI , Stefano VALLE
IPC分类号： H04B17/00
CPC分类号： H04L27/2032
摘要： A calibration method and system for reducing modulation errors in a telecommunication transmitter apparatus includes providing a pair of test signals, which are substantially in quadrature to each other, and to repeat an estimation loop. The estimation loop starts with generating a modulated signal by modulating the test signals (the modulation introducing a modulation error) and continues by obtaining a squared signal corresponding to the square of the modulated signal. A transformed signal corresponding to the squared signal in the frequency domain is then calculated. The estimation loop further includes calculating an error indicator, indicative of the modulation error, according to the modulus of the transformed signal. A compensation, to be applied to the test signals for counterbalancing the modulation error, is calculated according to the error indicator and is then applied to the test signals. The estimation loop is repeated until the error indicator reaches a threshold and an indication of the compensation resulting from a last iteration of the estimation loop is stored (for the application of the compensation to each pair of operative signals managed by the telecommunication transmitter apparatus during operation thereof).
摘要翻译：一种用于减少电信发射机装置中的调制误差的校准方法和系统包括提供一对基本上彼此正交的测试信号，并重复一个估计环路。估计循环开始于通过调制测试信号（引入调制误差的调制）产生调制信号，并通过获得与调制信号的平方相对应的平方信号来继续。然后计算对应于频域中的平方信号的变换信号。估计环路还包括根据变换信号的模数来计算指示调制误差的误差指示符。根据误差指示器计算应用于测量信号以补偿调制误差的补偿，然后将其应用于测试信号。重复估计循环，直到误差指示器达到阈值，并且存储由估计环路的最后一次迭代产生的补偿的指示（用于在操作期间对由电信发射机设备管理的每对操作信号应用补偿）。

10. 发明授权

US06785861B2 Versatile serial concatenated convolutional codes 有权
标题翻译：通用串行级联卷积码
公开(公告)号：US06785861B2
公开(公告)日：2004-08-31
申请号：US09781130
申请日：2001-02-09
申请人： Fabio Scalise , Fabio Osnato , Stefano Valle , Massimiliano Siti , Sergio Benedetto
发明人： Fabio Scalise , Fabio Osnato , Stefano Valle , Massimiliano Siti , Sergio Benedetto
IPC分类号： H03M1300
CPC分类号： H03M13/2972 , H03M13/256 , H03M13/2789 , H03M13/6362
摘要： An input digital signal is encoded by subjecting it to a first convolutional coding step followed by an interleaving step and a second convolutional coding step. The serial concatenated convolutional coded signal thus obtained is then subjected to modulation by means of a two-dimensional modulation scheme such as M-PSK or M-QAM. The corresponding decoding process involves an iterative decoding algorithm based on cascaded logarithmic soft-input soft-output processing steps.
摘要翻译：通过对输入数字信号进行经过交织步骤和第二卷积编码步骤的第一卷积编码步骤进行编码。然后通过诸如M-PSK或M-QAM的二维调制方案对如此获得的串行级联卷积编码信号进行调制。相应的解码过程涉及基于级联对数软输入软输出处理步骤的迭代解码算法。

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