公开(公告)号：US20050160342A1

公开(公告)日：2005-07-21

申请号：US11007785

申请日：2004-12-08

Applicant: Armin Wellig ,  Julien Zory

Inventor： Armin Wellig ,  Julien Zory

IPC: H03M13/27 ,  G06F11/00 ,  H03M13/00

CPC classification number: H03M13/2778 ,  H03M13/2707 ,  H03M13/276 ,  H04L1/0071

Abstract: Successive sequences of interleaved data samples extracted from a virtual memory having L0 columns and C0 rows are de-interleaved. The de-interleaving includes receiving each sequence of the interleaved data samples, and writing row by row the received sequences of interleaved data samples in a de-interleaving memory array having L rows and C columns, with L being greater or equal to L0 and C being greater or equal to C0. The data samples stored in the de-interleaving memory array are de-interleaved sub-array by sub-array. Each sub-array is a square cluster array having a number SQ of rows and columns. A cluster array is a row of the square cluster array comprising SQ data samples, with the number L of rows and the number C of columns of the de-interleaving memory array being multiples of the number SQ of rows and columns.

Abstract translation: 从具有L0列和C0行的虚拟存储器提取的交错数据样本的连续序列被解交织。 解交织包括接收交织的数据样本的每个序列，并且将所接收的交错数据样本序列逐行地写入具有L行和C列的解交织存储器阵列中，其中L大于或等于L0和C 大于或等于C0。 存储在解交织存储器阵列中的数据样本是通过子阵列去交织的子阵列。 每个子阵列是具有数字SQ行和列的方阵集阵列。 集群阵列是包括SQ数据样本的平方簇阵列，其行数为L，解交织存储器阵列的列的数目C为行和列的数量SQ的倍数。

公开(公告)号：US06901492B2

公开(公告)日：2005-05-31

申请号：US10325617

申请日：2002-12-20

Applicant: Friedbert Berens ,  Michael J. Thul ,  Franck Gilbert ,  Norbert Wehn

Inventor： Friedbert Berens ,  Michael J. Thul ,  Franck Gilbert ,  Norbert Wehn

IPC: H03M13/27 ,  H03M13/29 ,  H04L1/00 ,  G06F12/00

CPC classification number: H03M13/6566 ,  H03M13/2771

Abstract: An electronic device may include a source memory device partitioned into N elementary source memories for storing a sequence of input data sets, and a processor clocked by a clock signal and having N outputs for producing, per cycle of the clock signal, N output data sets respectively associated with the N input data sets stored in the N elementary source memories at respective source addresses. The electronic device may also include N single port target memories, N interleaving tables including, for each relative source address, the number of a target memory and the respective target address thereof, N cells connected in a ring structure. Further, each cell may also be connected between an output of the processor, an interleaving table, and a target memory.

Abstract translation: 电子设备可以包括分为N个基本源存储器的源存储器件，用于存储一系列输入数据组，以及由时钟信号计时并具有N个输出的处理器，用于每个周期的时钟信号产生N个输出数据组 分别与存储在各个源地址中的N个基本源存储器中的N个输入数据集相关联。 电子设备还可以包括N个单端口目标存储器，N个交织表包括用于每个相对源地址的目标存储器的数量及其各自的目标地址，以环形结构连接的N个单元。 此外，每个单元还可以连接在处理器的输出，交织表和目标存储器之间。

公开(公告)号：US20050111538A1

公开(公告)日：2005-05-26

申请号：US10985330

申请日：2004-11-10

Applicant: Yves Wernaers

Inventor： Yves Wernaers

IPC: H04L25/02 ,  H04L25/03 ,  H03K5/159

CPC classification number: H04L25/0216 ,  H04L25/022 ,  H04L25/0224 ,  H04L25/024 ,  H04L25/03292 ,  H04L2025/03414 ,  H04L2025/03585

Abstract: An aspect of the present invention is the use of two criteria in channel estimation, e.g. a value related to the length of an estimated Channel Impulse Response (CIR) and a value related to a noise content of the received signal, e.g. a Signal-to-Noise Ratio (SNR). These parameters can be used for the post-processing algorithm. An advantage of the present invention is that it is much more robust against long channels and/or high noise contents in received signals. Additionally it has moderate implementation complexity.

Abstract translation: 本发明的一个方面是在信道估计中使用两个标准，例如， 与估计的信道脉冲响应（CIR）的长度相关的值和与接收信号的噪声含量相关的值，例如， 信噪比（SNR）。 这些参数可用于后处理算法。 本发明的一个优点是对于接收到的信号中的长信道和/或高噪声内容是更强大的。 另外它具有中等的实现复杂性。

公开(公告)号：US06865232B1

公开(公告)日：2005-03-08

申请号：US09147750

申请日：1997-07-15

Applicant: Mikael Isaksson ,  Magnus Johansson ,  Harry Tonvall ,  Lennart Olsson ,  Tomas Stefansson ,  Hans Ohman ,  Gunnar Bahlenberg ,  Anders Isaksson ,  Goran Okvist ,  Lis-Marie Ljunggren ,  Tomas Nordstrom ,  Lars-Ake Isaksson ,  Daniel Bengtsson ,  Siwert Hakansson ,  Ye Wen

Inventor： Mikael Isaksson ,  Magnus Johansson ,  Harry Tonvall ,  Lennart Olsson ,  Tomas Stefansson ,  Hans Ohman ,  Gunnar Bahlenberg ,  Anders Isaksson ,  Goran Okvist ,  Lis-Marie Ljunggren ,  Tomas Nordstrom ,  Lars-Ake Isaksson ,  Daniel Bengtsson ,  Siwert Hakansson ,  Ye Wen

IPC: H04L1/00 ,  H04L25/03 ,  H04L27/26 ,  H04L27/34 ,  H04K1/10 ,  H04L27/28

CPC classification number: H04L1/0025 ,  H04L1/0059 ,  H04L1/0071 ,  H04L5/0007 ,  H04L5/0046 ,  H04L5/006 ,  H04L25/03159 ,  H04L27/2656 ,  H04L27/2657 ,  H04L27/2662 ,  H04L27/3461 ,  H04L2025/03414 ,  H04L2025/03522

Abstract: A multi-carrier transmission system has a plurality of transceivers, each having a receiver and a transmitter. Data is transmitted between the transceivers by modulating the data onto a multiplicity of carrier waves in the form of multi-bit symbols, wherein each carrier wave constitutes a channel, and wherein the number of bits per symbol (the bit loading), varies between channels and, within a channel, with time, so that each channel has associated therewith a bit loading parameter. In operation, the multi-carrier system is adapted to synchronously update, at the transceivers, the bit loading parameters associated with each channel by transmission of data over a control channel, in that the control channel is established, at system start-up, on a predetermined one of the multiplicity of carrier waves whose identity is known to the transceivers, and in that the control channel is, after start-up, changed from the predetermined channel to a further channel, selected by the first transceiver on the basis of channel characteristics.

Abstract translation: 多载波传输系统具有多个收发机，每个收发机具有接收机和发射机。 通过以多位符号的形式将数据调制到多个载波上，在收发器之间传输数据，其中每个载波构成一个信道，并且其中每个符号的比特数（比特加载）在信道之间变化 并且在频道内，随着时间，使得每个频道与其相关联地加载参数。 在操作中，多载波系统适于在收发机处通过控制信道上的数据传输来同步更新与每个信道相关联的比特加载参数，因为在系统启动时建立控制信道 多个载波的预定的一个载波，其身份对于收发机是已知的，并且控制信道在启动之后从预定信道改变到由第一收发信机基于信道选择的另一个信道 特点

公开(公告)号：US20040254969A1

公开(公告)日：2004-12-16

申请号：US10745948

申请日：2003-12-24

Applicant: STMicroelectronics N.V.

Inventor： Fabio Pisoni

IPC: G06F015/00

CPC classification number: H04L27/2662 ,  H04L27/2657

Abstract: A clock offset compensation arrangement may include a fractional interpolator for applying a trigonometric interpolation to a sampled input signal according to a clock offset signal. It uses transform-based processing in the frequency domain. Compared to a polynomial type interpolation it may be easier to implement, and may achieve a closer approximation to an ideal interpolation. It may reduce the effects of non-linear type errors introduced by truncation of higher powers. The arrangement may be applied to receivers or transmitters of multi-carrier modems, as well as other applications which use rate adaptation or synchronization.

Abstract translation: 时钟偏移补偿装置可以包括用于根据时钟偏移信号对采样的输入信号应用三角插值的分数内插器。 它在频域中使用基于变换的处理。 与多项式类型插值相比，它可能更容易实现，并且可以实现更接近于理想插值的近似。 它可以减少由截断较高功率引入的非线性类型误差的影响。 该布置可以应用于多载波调制解调器的接收机或发射机，以及使用速率适配或同步的其他应用。

公开(公告)号：US20040213325A1

公开(公告)日：2004-10-28

申请号：US10794768

申请日：2004-03-05

Applicant: STMicroelectronics N.V.

Inventor： Lydi Smaini ,  Didier Helal

IPC: H04B001/69

CPC classification number: H04B1/7174 ,  H04L25/4902

Abstract: Successive groups of N bits are delivered at a delivery frequency Fe greater than a predetermined frequency PRF. At least one of the successive groups includes at least one subgroup of at least one bit defining at least one digital cue of position and of shape of at least one base pulse within a window of length 1/PRF. This digital cue is converted into the base pulse, and the base pulse is filtered using a high-pass filter for providing a pulse of the ultra wideband type within the window with a temporal accuracy equal to 1/N*Fe.

Abstract translation: N个比特的连续组以大于预定频率PRF的传送频率Fe传送。 连续组中的至少一个包括至少一个位的至少一个子群，其限定长度为1 / PRF的窗口内的至少一个基本脉冲的位置和形状的至少一个数字提示。 该数字提示被转换成基本脉冲，并且使用高通滤波器对基本脉冲进行滤波，以便以等于1 / N * Fe的时间精度在窗口内提供超宽带类型的脉冲。

公开(公告)号：US20040151259A1

公开(公告)日：2004-08-05

申请号：US10693674

申请日：2003-10-24

Applicant: STMICROELECTRONICS N.V.

Inventor： Friedbert Berens ,  Ettore Messina ,  Miguel Kirsch

IPC: H04L027/06

CPC classification number: H03M13/3911 ,  H03M13/2957 ,  H03M13/612 ,  H04L1/005 ,  H04L1/0055 ,  H04L1/0066

Abstract: A method is provided for decoding a turbo-code encoded signal in a receiver. According to the method, the signal is received from a transmission channel, and the signal is digitally turbo-code decoded. Additionally, a quality information representative of conditions of the channel state estimation is dynamically determined, and the quality information is dynamically compared with a predetermined criteria for defining good or bad estimation conditions. A Maximum-A-Posteriori algorithm in the logarithmic domain is dynamically selected for good estimation conditions, or an approximation of the Maximum-A-Posteriori algorithm in the logarithmic domain is dynamically selected for bad estimation conditions. Also provided is a receiver that implements such a decoding method.

Abstract translation: 提供了一种用于对接收机中的turbo码编码信号进行解码的方法。 根据该方法，从传输信道接收信号，并且信号被数字turbo码解码。 此外，动态地确定代表信道状态估计的条件的质量信息，并且将质量信息与用于定义好的或不良的估计条件的预定标准动态地比较。 动态地选择对数域中的最大后验算法，以获得良好的估计条件，或者对于不良估计条件动态地选择对数域中的最大后验算法的近似值。 还提供了一种实现这种解码方法的接收机。

公开(公告)号：US20030189972A1

公开(公告)日：2003-10-09

申请号：US10116760

申请日：2002-04-03

Applicant: STMICROELECTRONICS N.V.

Inventor： Friedbert Berens ,  Timo Roman

IPC: H04B001/69

CPC classification number: H04B1/7105 ,  H04B1/7107

Abstract: The method of interference cancellation in a CDMA wireless communication system comprises receiving an incident digital signal containing a user signal transmitted on a CDMA user physical channel and an interfering signal, projecting said incident digital signal onto a projection space orthogonal to the space containing said interfering signal, filtering said projected signal with a filter matched to the CDMA user physical channel for detecting the data contained in said user signal.

Abstract translation: 在CDMA无线通信系统中的干扰消除方法包括：接收包含在CDMA用户物理信道上发送的用户信号和干扰信号的入站数字信号，将所述入站数字信号投影到与包含干扰信号的空间正交的投影空间上 用与CDMA用户物理信道匹配的滤波器对所述投影信号进行滤波，以检测包含在所述用户信号中的数据。

公开(公告)号：US20020126775A1

公开(公告)日：2002-09-12

申请号：US10006995

申请日：2001-12-03

Applicant: STMicroelectronics N.V.

Inventor： David Chappaz

IPC: H04L027/06

CPC classification number: H04L25/03197 ,  H04L25/03191

Abstract: The successive values of the digital symbols which can each take M different possible values are estimated on the basis of the successive values of digital samples each of which results from the combination of at most L successive symbols. This estimation includes a stage by stage progression through a trellis of the Viterbi type with Mk states, with k being less than or equal to Lnull1. All the states of all the stages are respectively provided with aggregate metrics. When taking into account the sample of rank n, all the transitions arriving at the various states of the current stage of the trellis are partitioned into M groups, each group containing all the transitions arising from the states of the preceding stage which are associated with one of the M possible values of the symbol of rank nnullk. The various aggregate metrics are calculated for these various states of the current stage of the trellis. One of the transitions which leads to the state provided with a extremum aggregate metric is determined in each group. A unique decision is taken regarding the value of the symbol of rank nnullk by detecting the group associated with the extremum of these M extremum aggregate metrics. This unique decision is provided with a symbol-confidence index formulated from these M extremum aggregate metrics.

Abstract translation: 可以基于每个由至多L个连续符号的组合产生的数字样本的连续值来估计每个可以取得M个不同可能值的数字符号的连续值。 该估计包括通过具有Mk状态的维特比类型的网格逐级进行，k小于或等于L-1。 所有阶段的所有状态分别被提供聚合指标。 当考虑秩n的样本时，到达网格当前阶段的各种状态的所有转变被划分为M组，每个组包含由前一级的状态产生的与一个状态相关联的所有转换 的n个符号的M个可能值。 对于网格的当前阶段的这些各种状态计算各种聚合度量。 在每组中确定导致提供极值聚合度量的状态的一个转换。 通过检测与这些M极值聚合度量的极值相关联的组，对秩n-k的符号的值进行独特的决定。 这个独特的决策提供了从这些M极值聚合指标制定的符号信心指数。

公开(公告)号：US20020115412A1

公开(公告)日：2002-08-22

申请号：US09993913

申请日：2001-11-06

Applicant: STMicroelectronics N.V.

Inventor： Corinne Bonhomme

IPC: H04B007/00

CPC classification number: H04L25/0216

Abstract: A method for estimating the impulse response of an information transmission channel includes evaluating a useful number of coefficients of an impulse response of the information transmission channel as a function of actual characteristics of the information transmission channel. This evaluation is carried out, for example, by using a time domain spreading parameter of the channel.

Abstract translation: 用于估计信息传输通道的脉冲响应的方法包括：根据信息传输通道的实际特性来评估信息传输通道的脉冲响应的有用数量。 该评估例如通过使用信道的时域扩展参数进行。