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    Process for performing log-likelihood-ratio clipping in a soft-decision near-ML detector, and detector for doing the same
    3.
    发明授权
    Process for performing log-likelihood-ratio clipping in a soft-decision near-ML detector, and detector for doing the same 有权
    与软判决的近最大似然检测器执行对数似然的限制，以及检测器对的方法

    公开(公告)号：EP2362597B1

    公开(公告)日：2013-11-20

    申请号：EP10368015.3

    申请日：2010-02-15

    Applicant: ST-Ericsson SA

    Inventor： Ancora, Andrea ,  Aubert, Sébastian

    IPC: H04L27/34 ,  H04L25/06 ,  H04L25/03

    CPC classification number: H03M13/41 ,  H04B1/06 ,  H04L25/03318 ,  H04L25/067 ,  H04L27/3427

    Abstract: A process for computing Log-Likelihood-ratios (LLR) in a detector of a wireless communication receiver, said LLR being used by a channel decoder. The process comprises the steps of: - receiving a signal from a telecom front end, said signal corresponding to data belonging to a finite set of constellation symbols, each constellation symbol being arranged in a lattice constellation impaired by an additive noise and also by a multiplicative channel; - computing a limited set of distances representative of the Euclidian distances between the received signal and a finite set of predetermined constellation symbols, possibly multiplied by the channel; - deriving a set of soft decisions or LLR from said computed set of distances under the constraint of a limited length of the list of distances, and - completing said derived LLR by clipping values read from a look-up table which is simultaneously addressed by the values of the SNR and the bit index. The invention is particularly suitable for embodying an OFDM receiver for a MIMO system.

    Process for slot synchronization of the P-SCH sequence in a UMTS communication system, and a receiver for the same
    4.
    发明公开
    Process for slot synchronization of the P-SCH sequence in a UMTS communication system, and a receiver for the same 有权
    方法时隙同步P-SCH序列中的UMTS通信系统和接收机THEREFOR

    公开(公告)号：EP2328286A1

    公开(公告)日：2011-06-01

    申请号：EP09368047.8

    申请日：2009-11-30

    Applicant: ST-Ericsson SA

    Inventor： Ancora, Andrea ,  Tomatis, Fabrizio

    IPC: H04B1/707

    CPC classification number: H04B1/70755 ,  H04B1/7083 ,  H04W56/00

    Abstract: A Process for achieving slot synchronization of the P-SCH sequence in a UMTS communication system, involving the step of
    - receiving (41) said signal including a synchronization sequence (PSCH);
    - performing a correlation (42) of each received sample with a known synchronization sequence (P-SCH) in order to generate a correlation profile;
    - determining (43) the level of noise and computing a first threshold;
    - suppressing (44) any peaks within said correlation profile having a magnitude inferior to said first threshold;
    - detecting (45) the persistent local maximum peaks over a period of N slots;
    - applying a predetermined mask positioned with respect to said persistent peaks and associated to at least one second threshold value distinctive from said first threshold.

    Abstract translation: 一种用于实现在UMTS通信系统中的P-SCH序列的时隙同步，涉及的步骤的工艺： - 接收（41）所述信号包括同步序列（PSCH）; - ，以便产生一个相关波形已知的同步序列（P-SCH）进行各接收的样本的相关性（42）; - 确定性开采（43）的噪声和计算第一阈值的水平; - 抑制器（44），其具有劣于所述第一阈幅值所述相关简档中的任何峰值; - 检测（45）经过一段N个时隙的持续局部最大峰值; - 应用预定定位相对于持久所述峰值和相关联的从所述第一阈独特的至少一个第二阈值的掩模。

    Process for computing channel quality indicator (CQI) in a spatial multiplexed MIMO wireless communication system using non linear detection
    5.
    发明公开
    Process for computing channel quality indicator (CQI) in a spatial multiplexed MIMO wireless communication system using non linear detection 审中-公开
    一种用于使用非线性检测在空间复用的MIMO无线通信系统中计算信道质量指示符（CQI）的方法

    公开(公告)号：EP2309659A1

    公开(公告)日：2011-04-13

    申请号：EP09368038.7

    申请日：2009-10-12

    Applicant: ST-Ericsson (France) SAS ,  ST-Ericsson SA ,  ST-Ericsson B.V.

    Inventor： Ancora, Andrea ,  Paker, Özgün ,  Stassen, Maurice

    IPC: H04B7/06 ,  H04B7/08 ,  H04B7/04

    CPC classification number: H04B7/0632 ,  H04B7/0417 ,  H04B7/0854

    Abstract: A process for computing Channel Quality Indicator (CQI) in a receiver for a spatial multiplexed Multiple Input Multiple Output (MIMO) wireless communication system, said receiver including a non linear detector, said process involving the steps of:
    - estimating (10) a channel matrix H at the receiver;
    - computing (20) H H H ;
    - computing (30) Cholesky factor C , with C being a triangular matrix having diagonal elements c k,k and satisfying the following equation: H H ⁢ H = C H ⁢ C ;
    - computing (40) per stream Signal-to-Interference Ratio (SINR) by applying the formula: SINR k = c k , k 2 σ 2 , with σ 2 being the noise variance;
    - computing (50) per stream channel capacity C k by applying the formula: C k = l ⁢ o ⁢ g 2 ⁢ 1 + S ⁢ I ⁢ N ⁢ R k ;
    - quantizing (60) the Channel Quality Indicator (CQI) according to the computed per stream channel capacity C k ;
    - reporting (70) the quantized CQI to the transmitter.
    The process is particularly adapted to non linear detection process based on the use of a Sphere Decoder.

    Abstract translation: 估计（10），一个信道 - ：一种用于在一个接收器计算信道质量指示符（CQI）用于空间复用的多输入多输出（MIMO）无线通信系统，所述接收器包括一个非线性检测器，所述方法涉及以下步骤 在接收器矩阵H; - 计算（20）H H H; - 计算（30）的Cholesky因数C，其中C为具有对角单元c K，K三角矩阵，并满足下面的方程：H H H =] C H¢¢℃; - 每个流的信号与干扰比（SINR）计算（40）通过应用下式：SINR k = c ^ K，K 2 A 2 A 2是噪声方差; - 计算（50）由流信道容量Cķ通过应用公式：C K = L O，¢¢克¢2 1 + S¢¢我¢N r个K表; - 量化（60）的信道质量指示符（CQI）雅丁到每个流的信道容量C k中的计算机; - 报告（70）经量化的CQI给发射机。 该方法特别angepasst到基于使用一个球解码的非线性检测处理。

    Process for achieving spur mitigation in an integrated circuit including a wide band receiver
    8.
    发明公开
    Process for achieving spur mitigation in an integrated circuit including a wide band receiver 有权
    方法在集成电路故障抑制的宽带RECEIVERS

    公开(公告)号：EP2348642A1

    公开(公告)日：2011-07-27

    申请号：EP10368009.6

    申请日：2010-01-26

    Applicant: ST-Ericsson SA

    Inventor： Ancora, Andrea ,  Brunel, Dominique ,  Noel, Laurent

    IPC: H04B1/10 ,  H04B15/04

    CPC classification number: H04B1/44 ,  H04B1/1036 ,  H04B15/04 ,  H04B2001/1063

    Abstract: A WCDMA receiver 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 WCDMA receiver 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 WCDMA receiver 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.

    Method to estimate a signal to interference plus noise ratio based on selection of the samples and corresponding processing system
    9.
    发明公开
    Method to estimate a signal to interference plus noise ratio based on selection of the samples and corresponding processing system 审中-公开
    基于所述样本的选择的信号来估计干扰加噪声的距离和相应的处理系统的方法

    公开(公告)号：EP2320593A1

    公开(公告)日：2011-05-11

    申请号：EP09306070.5

    申请日：2009-11-09

    Applicant: ST-Ericsson SA

    Inventor： Sesia, Stefania ,  Ancora, Andrea

    IPC: H04L1/20 ,  H04B1/10

    CPC classification number: H04L1/206 ,  H04L1/0026

    Abstract: Method for estimating a signal to interference plus noise ratio, called SINR, of an incident signal on a time interval, comprising receiving samples of said incident signal during said time interval and determining said SINR (204, 405) from said received samples using an average calculation (202, 401) and a variance calculation (203, 404), The determining step comprises selecting (201, 402) a set of samples from said received samples and performing said average calculation and/or said variance calculation (202, 203, 401, 404) by using said selected set of samples only.

    Abstract translation: 对所述时间间隔和确定性采矿过程中估计信号对干扰加噪声比，称为SINR，在一个时间间隔的入射信号的，包括所述事件信号的接收的样本的方法，所述SINR（204，405）从所述使用平均接收的采样 计算（202，401）和方差计算（203，404），确定性采矿步骤包括选择（201，402）的一组从所述接收的样本的样本的和进行所述平均计算和/或所述方差计算（202，203， 401，404）通过使用所述选定的一组唯一的样本。

    Iterative successive interference cancellation in MU-MIMO using interference whitening and channel reestimation
    10.
    发明公开
    Iterative successive interference cancellation in MU-MIMO using interference whitening and channel reestimation 审中-公开
    使用相关处理的干扰端在MU-MIMO系统的迭代连续干扰抑制和重复信道估计

    公开(公告)号：EP2779547A1

    公开(公告)日：2014-09-17

    申请号：EP13305293.6

    申请日：2013-03-14

    Applicant: ST-Ericsson SA

    Inventor： Ancora, Andrea ,  Tomatis, Fabrizio ,  Scherb, Ansgar

    IPC: H04L25/02 ,  H04L25/03

    CPC classification number: H04B1/7107 ,  H04B7/0413 ,  H04L1/005 ,  H04L25/0328 ,  H04L25/03286 ,  H04L25/03292 ,  H04L25/03891

    Abstract: It is provided a method implemented by a receiver of a telecommunication device comprising receiving (S10) a signal ( y ) corresponding to an intended signal ( u ) sent turbo-encoded and bits-to-symbols converted ( s ) on a MIMO time-dispersive channel having a dispersion matrix ( H ), applying an interference-cleaning process (S30) on the initial signal ( Ŝ LIN ) comprising a spatial interference whitening (S310), a MIMO joint detection (S320), and then a turbo-decoding (S330), subtracting (S50) from the initial signal ( ŝ LIN ) a subtraction signal ( Ḣ IsI ŝ ) determined by performing an interference-extracting process (S40) on the result of the application of the interference-cleaning process (S30), determining an estimated signal ( û ) indicative of the intended signal ( u ) by performing the interference-cleaning process (S30) on the result of the subtracting (S50).
    The method improves the field of MIMO.

    Abstract translation: 它提供了一种由发送的电信设备，包括：接收（S10）的信号（y）处的预期的信号对应于（U）的接收器中实现的方法的turbo编码和比特至码元上的MIMO时间转换（S） 具有分散矩阵（H），施加到色散信道干扰清洗过程的初始信号（S30）（S LIN）包括空间干扰白化（S310），一个MIMO联合检测（S320），然后一个涡轮解码 （S330），从由所述干扰清洗过程中的应用的结果执行上干扰提取处理（S40）开采的初始信号（S LIN）相减信号（H ISI S）确定的减去（S50）（S30） 上估计的信号确定性开采（U）表示通过在减法（S50）的结果执行所述干扰清洁处理（S30）的预期信号（U）的。 该方法提高MIMO的领域。

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