公开(公告)号：US08611398B2

公开(公告)日：2013-12-17

申请号：US13395978

申请日：2010-09-16

申请人： Andrea Ancora ,  Fabrizio Tomatis

发明人： Andrea Ancora ,  Fabrizio Tomatis

IPC分类号： H04B1/00

CPC分类号： H04B7/0854 ,  H04B1/7097 ,  H04B1/7103

摘要： A MIMO receiver for processing N data streams received by N antennas for a direct-sequence spread-spectrum wireless communication system comprising a linear equalizer operating at the chip level for performing linear chip level Inter-Chip Interference and all Inter-Stream Interference cancellation of said N data streams, and generating N output chip level data streams; de-spreading blocks for separately de-spreading the N outputs of the linear equalizer; and a non linear detector for performing spatial equalization and multi-stream detection.

摘要翻译： 一种MIMO接收机，用于处理由N个天线接收的N个数据流，用于直接序列扩频无线通信系统，该无线通信系统包括在芯片级操作的线性均衡器，用于执行线性芯片级芯片间干扰和所述的所有流间干扰消除 N个数据流，并产生N个输出芯片级数据流; 去扩展块，用于对线性均衡器的N个输出进行单独解扩; 以及用于执行空间均衡和多流检测的非线性检测器。

公开(公告)号：US20120057628A1

公开(公告)日：2012-03-08

申请号：US13256414

申请日：2010-03-11

申请人： Andrea Ancora ,  Giuseppe Montalbano

发明人： Andrea Ancora ,  Giuseppe Montalbano

IPC分类号： H04L27/06 ,  H04L27/01

CPC分类号： H04L27/2647 ,  H04L25/03248 ,  H04L2025/03445

摘要： An OFDM receiver for processing an OFDM received signal to perform OFDM reception in presence of Doppler effects is provided. The receiver has at least two parallel processing chains, each processing chain has a time domain windowing for processing an OFDM block. The processing consisting of the multiplication, element by element of the OFDM block, by a set of predetermined coefficients.The receiver also has a DFT block (such as FFT) for demodulating said windowed OFDM symbol into the frequency domain equivalent wherein the windowings of the at least two parallel processing chains have complementary profiles so as to avoid any loss of information throughout the OFDM sample. The invention also provides a process to be used in an OFDM receiver.

摘要翻译： 提供了一种用于处理OFDM接收信号以在存在多普勒效应的情况下进行OFDM接收的OFDM接收机。 接收机具有至少两个并行处理链，每个处理链具有用于处理OFDM块的时域加窗。 该处理由OFDM块的逐个乘法乘以一组预定系数组成。 接收机还具有用于将所述加窗的OFDM符号解调为频域等价物的DFT块（诸如FFT），其中，所述至少两个并行处理链的窗口具有互补特征，以避免整个OFDM样本中的信息丢失。 本发明还提供了一种在OFDM接收机中使用的过程。

公开(公告)号：US20110055657A1

公开(公告)日：2011-03-03

申请号：US12865702

申请日：2009-02-05

申请人： Sébastien Charpentier ,  Andrea Ancora

发明人： Sébastien Charpentier ,  Andrea Ancora

IPC分类号： H03M13/05 ,  G06F11/10

CPC分类号： H04L1/0051 ,  H03M13/2975

摘要： A method for conditionally stopping execution of a turbo decoder is proposed. The decoder has elementary decoders. Each elementary decoder performs a sequence of decoding operations and is arranged to receive an input from at least one other elementary decoder. The method determines for each specific decoding operation if the sequence of elementary decoding operations of the specific elementary decoder has substantially converged or substantially diverged. The method terminates the execution of decoding operations if a number of sequences has substantially converged or substantially diverged.

摘要翻译： 提出了有条件地停止执行turbo解码器的方法。 解码器具有基本解码器。 每个基本解码器执行解码操作的序列，并且被布置成从至少一个其他基本解码器接收输入。 如果特定基本解码器的基本解码操作的序列已经基本上收敛或基本上发散，则该方法确定每个特定解码操作。 如果序列数目基本上收敛或基本上分散，则该方法终止解码操作的执行。

公开(公告)号：US20100241935A1

公开(公告)日：2010-09-23

申请号：US11720830

申请日：2005-11-30

申请人： Andrea Ancora ,  Fabrizio Tomatis

发明人： Andrea Ancora ,  Fabrizio Tomatis

IPC分类号： H03M13/09 ,  G06F11/10

CPC分类号： H04L1/1835 ,  H03M13/2957 ,  H03M13/2975 ,  H03M13/3723 ,  H03M13/3972 ,  H03M13/6306 ,  H04L1/005 ,  H04L1/0066 ,  H04L1/08 ,  H04L1/1812

摘要： An iterative decoding device (ITD) for a communication receiver comprises: i) a means (SISO1, SISO2, DI1, DI2, I1, I2) for decoding received encoded data blocks by means of a so-called next iteration initialization mechanism, a control means (CM) arranged to choose one of the first and second hard decision bits in order for the validity of a CRC field, associated to this received data block, to be checked, and Ëi) a first memory means (M1). The control means (CM) is also arranged, when the CRC field of a block is invalid, —to order the decoding means to store the final stakes associated to the block in the first memory means (M1), —to require the transmission of a redundant version of the block, and —when the redundant version is received, to initialize the decoding means (SISO1) with the stored final stakes before it applies the next iteration initialization mechanism to the received redundant version.

摘要翻译： 用于通信接收机的迭代解码设备（ITD）包括：i）用于通过所谓的下一迭代初始化机制对接收到的编码数据块进行解码的装置（SISO1，SISO2，DI1，DI2，I1，I2） 用于选择第一和第二硬判决位之一以便与该接收到的数据块相关联的CRC字段的有效性被检查的装置（CM），以及第一存储装置（M1）。 控制装置（CM）也被布置为当块的CRC字段无效时，为了将解码装置命令将与块相关联的最终桩数存储在第一存储装置（M1）中，要求传输 块的冗余版本，以及 - 当接收到冗余版本时，在将下一个迭代初始化机制应用于接收到的冗余版本之前，将存储的最终桩号初始化解码装置（SISO1）。

公开(公告)号：US08938203B2

公开(公告)日：2015-01-20

申请号：US13574950

申请日：2011-01-26

申请人： Andrea Ancora ,  Dominique Brunel ,  Laurent Noel

发明人： Andrea Ancora ,  Dominique Brunel ,  Laurent Noel

IPC分类号： H04B1/44 ,  H04B1/10 ,  H04B15/04

CPC分类号： H04B1/44 ,  H04B1/1036 ,  H04B15/04 ,  H04B2001/1063

摘要： A radio transceiver including—an antenna (201) switch having a control lead (226); —a RF and front end circuit (202) coupled to said antenna switch and operating in at least one 2G mode and at least one 3G mode; —a RF transceiver (209) coupled to said RF front end and operating in at least a first 2G and a second 3G mode; —a baseband (210) communicating with a set of peripherals and external devices; The radio transceiver is characterized by the fact that it includes: —control means (221) for controlling said antenna switch (201) in a isolated mode; —an programmable adaptive filter controlled by said control means for the purpose of introducing at least one notch for eliminating one corresponding spur. The radio transceiver preferably includes means (215) for performing, under control of said control means (221) a FFT computation for the purpose of elaborating a representation, in the time domain, of the different spurs and/or jammers spoiling the received signal when in isolated mode.

摘要翻译： 一种无线电收发器，包括具有控制引线（226）的天线（201）开关。 - RF和前端电路（202），其耦合到所述天线开关并以至少一个2G模式和至少一个3G模式操作; - RF收发器（209），其耦合到所述RF前端并且以至少第一2G和第二3G模式操作; - 与一组外围设备和外部设备通信的基带（210）; 无线电收发器的特征在于它包括：用于以隔离模式控制所述天线开关（201）的控制装置（221） - 由所述控制装置控制的可编程自适应滤波器，用于引入至少一个用于消除一个对应支线的凹口。 无线电收发器优选地包括用于在所述控制装置（221）的控制下执行FFT计算的装置（215），用于在时域中详细描述破坏接收信号的不同杂波和/或干扰器的表示， 在隔离模式。

公开(公告)号：US08873681B2

公开(公告)日：2014-10-28

申请号：US13575676

申请日：2011-02-15

申请人： Issam Toufik ,  Andrea Ancora

发明人： Issam Toufik ,  Andrea Ancora

IPC分类号： H04L27/06 ,  H04L25/03 ,  H04L27/26

CPC分类号： H04L25/03159 ,  H04L27/2691 ,  H04L2025/03414

摘要： Process for canceling Intercarrier Interference in a OFDM receiver receiving OFDM blocks in presence of Doppler, comprising the steps of: receiving a OFDM block comprising N samples; applying a FFT for the purpose of generating N frequency domain representations composing the received signal (R); multiplying said received signal (R) by the hermitian value of the channel (HH), with H being the channel estimate; applying on said received signal a preconditioned conjugate gradient algorithm based on a N×N P preconditioner matrix; Characterized in that said preconditioner matrix is computed at follows: Formula (19) and formula (20), where formula (I) is a LFIR×PN selection matrix obtained by extracting a predetermined number (LFIR) of rows from the identity matrix IPN, LFIR being a predetermined integer inferior to PN, with p corresponding to the basis expansion order chosen and N is the FFT size; formula (II) is equal to HFH, with H being the frequency-domain channel matrix and F being the N×N discrete-Fourier transform unitary matrix F; formula (III) is the N×N identity matrix; formula (IV) is the varience of the noise; formula (V) is being the 1×N vector containing 1 in n-th position and 0 elsewhere. S n ( I ) ℋ ( II ) I ( III ) σ ( IV ) 1 n ⁢ ( V ) f n T = 1 n ⁢ ℋ H ⁢ ℋ ⁢ ⁢ S n T ⁡ [ S n ⁢ ℋ H ⁡ ( ℋℋ H + σ z 2 ⁢ I ) ⁢ ℋ ⁢ ⁢ S n T ] - 1 ( 19 ) G ˘ = [ f 0 T ⁢ S 0 f 1 T ⁢ S 1 ⋮ f N - 1 T ⁢ S N - 1 ] ( 20 )

摘要翻译： 一种用于在存在多普勒的情况下接收OFDM块的OFDM接收机中消除载波间干扰的过程，包括以下步骤：接收包含N个采样的OFDM块; 施加FFT以产生构成接收信号（R）的N个频域表示; 将所述接收信号（R）乘以信道（HH）的毫微米值，其中H是信道估计; 在所述接收信号上应用基于N×N P预处理器矩阵的预条件共轭梯度算法; 其特征在于所述预处理器矩阵如下计算：公式（19）和公式（20），其中公式（I）是通过从单位矩阵IPN提取预定数量（LFIR）的行而获得的LFIR×PN选择矩阵， LFIR是一个低于PN的预定整数，p对应于所选的基本扩展顺序，N是FFT大小; 公式（II）等于HFH，其中H是频域信道矩阵，F是N×N离散傅里叶变换酉矩阵F; 公式（III）是N×N单位矩阵; 公式（IV）是噪声的变化; 公式（V）是在第n个位置包含1的1×N向量，其他地方是0。 （I）ℋ（II）I（III）＆sgr; （IV）1 n（V）fn T = 1nℋHℋ⁢S n T⁡[S nℋH⁡（ℋℋH +＆sgr; z 2 I）ℋ⁢S n T ] - 1（19）G˘= [f 0 T S 0 f 1 T S 1⋮f N - 1 T SN - 1]（20）

公开(公告)号：US20130301749A1

公开(公告)日：2013-11-14

申请号：US13995766

申请日：2011-12-20

申请人： Sébastien Aubert ,  Andrea Ancora

发明人： Sébastien Aubert ,  Andrea Ancora

IPC分类号： H04B7/04

CPC分类号： H04B7/0456 ,  H04B7/0452 ,  H04B7/0639 ,  H04B7/0697

摘要： A Process for selecting a Precoding Matrix Index (PMI) in a Multiple In Multiple Out (MIMO) receiver of a wireless communications comprising a base station communicating with User Equipments through a downlink and uplink channel, said base station applying a precoding on the transmit symbol vector based on a matrix Pi being selected from a set of predefined matrices and identified by a PMI index computed by said UE and forwarded to said base station via said uplink; said process involving step of: —estimating (100) the MIMO channel matrix H of a given set of resources blocks comprising received symbol vectors; —estimating (200) the variance σ2 of the additive noise (AWGN)—computing (300) for each particular matrix comprised within said set of predefined matrix a cost function Fi (Pi, H, σ2n) being representative of the orthogonality of said matrix MIMO channel matrix H; —comparing (400) the values of said cost function Fi; and —transmitting (500) to said base station the index i corresponding to the Fi representative of the best conditionned MIMO channel matrix.

摘要翻译： 一种用于在包括通过下行链路和上行链路信道与用户设备通信的基站的无线通信的多输入多输出（MIMO）接收机中选择预编码矩阵索引（PMI）的过程，所述基站在发射符号上应用预编码 基于从一组预定义矩阵中选择并由所述UE计算的PMI索引并通过所述上行链路转发到所述基站的矩阵Pi的向量; 所述过程包括以下步骤： - 估计（100）包括接收符号向量的给定资源集合的MIMO信道矩阵H; - 估计（200）对于包含在所述预定义矩阵集合内的每个特定矩阵的加性噪声​​（AWGN）计算（300）的方差σ2代表所述矩阵的正交性的成本函数Fi（Pi，H，sigma2n） MIMO信道矩阵H; - 比较（400）所述成本函数Fi的值; 并向所述基站发送对应于最佳条件MIMO信道矩阵的Fi的索引i（500）。

公开(公告)号：US08315151B2

公开(公告)日：2012-11-20

申请号：US12161095

申请日：2007-01-17

申请人： Andrea Ancora ,  Matthew Baker

发明人： Andrea Ancora ,  Matthew Baker

IPC分类号： H04J11/00 ,  H04B7/208 ,  H04L27/28

CPC分类号： H04L27/2626 ,  H04L5/0007 ,  H04L5/0048 ,  H04L27/2613 ,  H04W52/04 ,  H04W52/143

摘要： A transmitting station (TS), for transmitting a plurality of symbols of a data signal in a communication system, comprises a process module (PM) arranged for adding subset of the symbols of the data signal to symbols of a predetermined signal prior to proceed to transmission of the data signal.

摘要翻译： 一种用于在通信系统中发送数据信号的多个符号的发送站（TS），包括：处理模块（PM），被配置为在继续前往数字信号的符号之前将数据信号的符号添加到预定信号的符号 传输数据信号。

公开(公告)号：US08310944B2

公开(公告)日：2012-11-13

申请号：US12090018

申请日：2006-10-10

申请人： Andrea Ancora ,  Fabrizio Tomatis ,  Pierre Demaj

发明人： Andrea Ancora ,  Fabrizio Tomatis ,  Pierre Demaj

IPC分类号： H04L12/26 ,  H04L12/18

CPC分类号： H04B17/336 ,  H04B17/26

摘要： The SINR (signal-to-interference+noise ratio) estimator comprises a low-pass filter (66) to filter a variance σκ computed from the received pilot symbol amplitude to obtain an estimated variance σκ with a reduced bias, wherein the low-pass filter has an adjustable coefficient and the estimator comprises an electronic controller able to adjust the value of the adjustable coefficient according to the number of pilot symbols received during a timeslot.

摘要翻译： SINR（信号与干扰+噪声比）估计器包括滤波器（66），以滤除方差＆kgr; 从接收的导频符号幅度计算得到估计的方差＆kgr; 具有减小的偏置，其中所述低通滤波器具有可调节系数，并且所述估计器包括能够根据在时隙期间接收的导频符号的数量来调整所述可调节系数的值的电子控制器。

公开(公告)号：US08276037B2

公开(公告)日：2012-09-25

申请号：US12306637

申请日：2007-06-14

申请人： Andrea Ancora ,  Giuseppe Montalbano

发明人： Andrea Ancora ,  Giuseppe Montalbano

IPC分类号： H03M13/00

CPC分类号： H03M13/29 ,  H03M13/2978 ,  H03M13/45

摘要： The invention related to a turbo decoder comprising SISO decoding modules each other interconnected in a feedback control scheme having scaling modules for applying a scaling factor to extrinsic information delivered by said SISO decoding modules. The turbo decoder comprises a selection module for adaptively selecting said scaling factor based on a number of decoding iterations of the turbo decoder.

摘要翻译： 本发明涉及一种包括SISO解码模块的turbo解码模块，其在具有缩放模块的反馈控制方案中相互连接，该缩放模块用于将缩放因子应用于由所述SISO解码模块传送的外部信息。 turbo解码器包括一个选择模块，用于根据turbo解码器的解码迭代次数自适应地选择所述缩放因子。