公开(公告)号：WO2016040659A1

公开(公告)日：2016-03-17

申请号：PCT/US2015/049463

申请日：2015-09-10

Applicant: QUALCOMM INCORPORATED

Inventor： TU, Sheng-Yuan ,  ABRISHAMKAR, Farrokh ,  BANISTER, Brian Clarke ,  RAMINI, Roberto ,  CARBONE, Nicholas Michael ,  KANG, Insung

IPC: H04B1/525

CPC classification number: H04B1/0475 ,  H04B1/525 ,  H04W88/06

Abstract: The various embodiments include methods and apparatuses for canceling nonlinear interference during concurrent communication of multi-technology wireless communication devices. Nonlinear interference may be estimated using a block least squares function interference filter by generating aggressor kernel matrices from the aggressor signals, augmenting the aggressor kernel matrices by weight factors and executing a linear combination of the augmented output, at an intermediate layer to produce intermediate layer outputs. At an output layer, a linear filter function may be executed on the intermediate layer outputs to produce an estimated nonlinear interference used to cancel the nonlinear interference of a victim signal.

Abstract translation: 各种实施例包括用于在多技术无线通信设备的并发通信期间消除非线性干扰的方法和装置。 可以使用块最小二乘函数干扰滤波器通过从侵扰者信号产生侵略者核心矩阵来估计非线性干扰，通过权重因子增加侵略者核心矩阵并在中间层执行增强输出的线性组合以产生中间层输出 。 在输出层，可以对中间层输出执行线性滤波函数，以产生用于消除受害信号的非线性干扰的估计的非线性干扰。

公开(公告)号：WO2016040617A1

公开(公告)日：2016-03-17

申请号：PCT/US2015/049403

申请日：2015-09-10

Applicant: QUALCOMM INCORPORATED

Inventor： TU, Sheng-Yuan ,  ABRISHAMKAR, Farrokh ,  KANG, Insung

IPC: H04B1/525 ,  G05B13/02

CPC classification number: G06N3/08 ,  H04B1/123 ,  H04J11/005

Abstract: The various embodiments include methods and apparatuses for canceling nonlinear interference during concurrent communication of multi-technology wireless communication devices. Nonlinear interference may be estimated using a multi-model radial basis function neural network with Hammerstein structure by executing a radial basis function on aggressor signals at a hidden layer of the radial basis function neural network with Hammerstein structure to obtain hidden layer outputs, augmenting aggressor signal(s) by weight factors, infusing the hidden layer outputs by infusion factors, and, executing a linear combination of the augmented output, at an intermediate layer to produce a combined hidden layer outputs. At an output layer, a linear filter function may be executed on the hidden layer outputs to produce an estimated nonlinear interference used to cancel the nonlinear interference of a victim signal.

Abstract translation: 各种实施例包括用于在多技术无线通信设备的并发通信期间消除非线性干扰的方法和装置。 可以使用具有Hammerstein结构的多模式径向基函数神经网络来估计非线性干扰，通过在具有Hammerstein结构的径向基函数神经网络的隐层处对侵略者信号执行径向基函数以获得隐层输出，增强侵略者信号 （以重量计），通过输注因子输入隐层输出，以及在中间层处执行增强输出的线性组合以产生组合隐层输出。 在输出层，可以在隐层输出上执行线性滤波函数，以产生用于消除受害信号的非线性干扰的估计的非线性干扰。

公开(公告)号：WO2016040604A1

公开(公告)日：2016-03-17

申请号：PCT/US2015/049388

申请日：2015-09-10

Applicant: QUALCOMM INCORPORATED

Inventor： ABRISHAMKAR, Farrokh ,  PIERROT, Alexandre ,  TU, Sheng-Yuan

IPC: H04B1/525

CPC classification number: G06N3/04 ,  G05B13/027 ,  G06N3/08 ,  H04B1/1036 ,  H04B1/1081 ,  H04B1/123 ,  H04B1/406 ,  H04B1/525 ,  H04B1/7107 ,  H04L25/03159 ,  H04W88/06

Abstract: The various embodiments include methods and apparatuses for canceling nonlinear interference during concurrent communication of multi-technology wireless communication devices. Nonlinear interference may be estimated using a support vector regression interference filter by generating one or more aggressor kernels, augmenting the one or more kernels by weight factors, and executing a regression function of the augmented components, to produce an estimated jammer signals. At an output layer, estimated jammer signals may be linearly combined to produce an estimated nonlinear interference used to cancel the nonlinear interference of a victim signal.

Abstract translation: 各种实施例包括用于在多技术无线通信设备的并发通信期间消除非线性干扰的方法和装置。 可以使用支持向量回归干扰滤波器通过生成一个或多个攻击者内核，通过权重因子来增加一个或多个内核以及执行增强成分的回归函数来估计非线性干扰，以产生估计的干扰信号。 在输出层，估计的干扰信号可以被线性组合以产生用于消除受害信号的非线性干扰的估计的非线性干扰。

公开(公告)号：WO2012122037A1

公开(公告)日：2012-09-13

申请号：PCT/US2012/027550

申请日：2012-03-02

Applicant: QUALCOMM Incorporated ,  ABRISHAMKAR, Farrokh ,  MOTAMED, Mariam ,  YAZDAN PANAH, Ali ,  SUBRAHMANYA, Parvathanathan ,  FARAJIDANA, Amir ,  KRITHIVASAN, Dinesh ,  KREUTZ-DELGADO, Kenneth

Inventor： ABRISHAMKAR, Farrokh ,  MOTAMED, Mariam ,  YAZDAN PANAH, Ali ,  SUBRAHMANYA, Parvathanathan ,  FARAJIDANA, Amir ,  KRITHIVASAN, Dinesh ,  KREUTZ-DELGADO, Kenneth

IPC: H04L25/02

CPC classification number: H04L25/0204 ,  H04L25/0228 ,  H04L25/0242

Abstract: Certain aspects of the present disclosure propose a method for estimating a channel utilizing Sparse Bayesian Learning (SBL) algorithm. The proposed method employs a Basis expansion (e.g., polynomial) channel model, and iteratively performs SBL algorithm to adjust parameters of the channel model.

Abstract translation: 本公开的某些方面提出了一种利用稀疏贝叶斯学习（SBL）算法来估计信道的方法。 所提出的方法采用基础扩展（例如，多项式）信道模型，并且迭代地执行SBL算法来调整信道模型的参数。

公开(公告)号：WO2010144506A1

公开(公告)日：2010-12-16

申请号：PCT/US2010/037853

申请日：2010-06-08

Applicant: QUALCOMM Incorporated ,  LI, Wenjun ,  ABRISHAMKAR, Farrokh ,  YU, Yingqun

Inventor： LI, Wenjun ,  ABRISHAMKAR, Farrokh ,  YU, Yingqun

IPC: H04B1/707

CPC classification number: H04B1/71072 ,  H04B2201/70702

Abstract: Systems and methods for interference cancellation at a receiver in a wireless communication system are provided. In one aspect, a method for interference cancellation is provided. The method comprises providing total received chips received from a plurality of cells (2810). The method also comprises successively estimating received chips for each of the plurality of cells in a plurality of iterations (2820), wherein each of the plurality of iterations after a first iteration comprises canceling previously estimated received chips for one or more of the plurality of cells from the total received chips, and estimating received chips for one of the plurality of cells using the total received chips with the previously estimated received chips for the one or more of the plurality of cells cancelled out (2830).

Abstract translation: 提供了在无线通信系统中的接收机处的干扰消除的系统和方法。 一方面，提供了一种用于干扰消除的方法。 该方法包括提供从多个小区接收的总接收码片（2810）。 该方法还包括在多次迭代（2820）中连续地估计多个小区中的每一个的接收码片，其中在第一次迭代之后的多个迭代中的每一个包括消除多个小区中的一个或多个的先前估计的接收码片 从所述总接收到的芯片中，使用所述多个小区中的所述一个或多个被消除的所述先前估计的接收码片的总接收码片来估计所述多个小区中的一个小区的接收码片（2830）。

公开(公告)号：WO2010129437A1

公开(公告)日：2010-11-11

申请号：PCT/US2010/033288

申请日：2010-04-30

Applicant: QUALCOMM INCORPORATED ,  ABRISHAMKAR, Farrokh ,  YU, Yingqun ,  McCLOUD, Michael, L. ,  SIKRI, Divaydeep

Inventor： ABRISHAMKAR, Farrokh ,  YU, Yingqun ,  McCLOUD, Michael, L. ,  SIKRI, Divaydeep

IPC: H04B1/707

CPC classification number: H04B1/71052

Abstract: Systems and methods for multi-user detection are provided. In one aspect of the disclosure, an apparatus is provided. The apparatus comprises a processing unit configured to process a plurality of received chips into a plurality of received symbols for a plurality of users. The apparatus further comprises a computation unit configured to compute a multi-user matrix relating a plurality of user symbols for the plurality of users to the plurality of received symbols and a detection unit configured to detect the plurality of user symbols for the plurality of users using the computed multi-user matrix and the plurality of received symbols.

Abstract translation: 提供了多用户检测的系统和方法。 在本公开的一个方面，提供一种装置。 该装置包括：处理单元，被配置为将多个接收到的码片处理为多个用户的多个接收符号。 所述装置还包括：计算单元，被配置为计算将所述多个用户的多个用户符号与所述多个接收到的符号相关联的多用户矩阵;以及检测单元，被配置为使用所述多个用户检测多个用户的多个用户符号 所计算的多用户矩阵和多个接收符号。

公开(公告)号：WO2010021946A1

公开(公告)日：2010-02-25

申请号：PCT/US2009/053962

申请日：2009-08-15

Applicant: QUALCOMM INCORPORATED ,  SIKRI, Divaydeep ,  DEDE, Erdogan ,  ABRISHAMKAR, Farrokh ,  CHILDREN, Philip, J.c. ,  DE LAURENTIIS, Nico

Inventor： SIKRI, Divaydeep ,  DEDE, Erdogan ,  ABRISHAMKAR, Farrokh ,  CHILDREN, Philip, J.c. ,  DE LAURENTIIS, Nico

IPC: H04W56/00 ,  H04L7/04 ,  H04L25/02

CPC classification number: H04W56/00 ,  H04L7/041 ,  H04L25/0228 ,  H04L25/0328

Abstract: A method for estimating timing in a wireless communication comprises the steps of receiving a plurality of symbol bursts corresponding to a plurality of time slots and selecting a subset of symbols from a first symbol burst of the plurality of symbol bursts. The subset comprises a first midamble symbol. The method further comprises the steps of calculating, for each symbol in the subset, a corresponding midamble estimation error, and determining the lowest calculated midamble estimation error to determine a timing for the first symbol burst. The method further comprises the steps of processing the first symbol burst utilizing the timing determined for the first symbol burst, and processing a second symbol burst of the plurality of symbol bursts utilizing the timing determined for the first symbol burst.

Abstract translation: 一种用于估计无线通信定时的方法包括以下步骤：接收与多个时隙相对应的多个符号突发，并从所述多个符号突发的第一符号突发中选择符号子集。 子集包括第一中间码符号。 所述方法还包括以下步骤：针对所述子集中的每个符号计算相应的中间码估计误差，以及确定所计算出的最低中值码估计误差以确定所述第一符号突发的定时。 该方法还包括以下步骤：利用为第一符号突发确定的定时来处理第一符号突发，以及利用为第一符号突发确定的定时来处理多个符号突发的第二符号突发。

公开(公告)号：WO2009140338A2

公开(公告)日：2009-11-19

申请号：PCT/US2009/043718

申请日：2009-05-13

Applicant: QUALCOMM INCORPORATED ,  SIKRI, Divaydeep ,  ABRISHAMKAR, Farrokh ,  YAN, Ming ,  DE LAURENTIIS, Nico

Inventor： SIKRI, Divaydeep ,  ABRISHAMKAR, Farrokh ,  YAN, Ming ,  DE LAURENTIIS, Nico

IPC: H04B7/01 ,  H04L7/00 ,  H04W56/00

CPC classification number: H04W56/00 ,  H04B7/02

Abstract: A method for timing and frequency synchronization in a wireless system is provided. The method comprises the steps of receiving a burst of symbols, selecting a subset of the burst of symbols, iteratively adjusting the subset of the burst of symbols by a plurality of timing offsets and calculating, for each timing offset, a first performance metric corresponding to the adjusted subset. The method further comprises the steps of determining one of the plurality of timing offsets to be a preferred timing offset based upon the first performance metric thereof, iteratively rotating the subset of the burst of symbols by a plurality of frequency offsets and calculating, for each frequency offset, a second performance metric corresponding to the rotated subset, and determining one of the plurality of frequency offsets to be a preferred frequency offset based upon the second performance metric thereof.

Abstract translation: 提供了一种用于无线系统中的定时和频率同步的方法。 该方法包括以下步骤：接收符号脉冲串，选择符号脉冲串的子集，通过多个定时偏移迭代地调整符号脉冲串的子集，并且针对每个定时偏移量计算对应于 调整后的子集。 该方法还包括以下步骤：基于其第一性能度量，将多个定时偏移中的一个定时偏移确定为优选的定时偏移，将符号突发的子集迭代地旋转多个频率偏移，并且针对每个频率 偏移量，对应于旋转的子集的第二性能量度，以及基于其第二性能度量，将所述多个频率偏移中的一个确定为优选频率偏移。

公开(公告)号：WO2008124766A3

公开(公告)日：2008-10-16

申请号：PCT/US2008/059750

申请日：2008-04-09

Applicant: QUALCOMM Incorporated ,  ABRISHAMKAR, Farrokh ,  MOTAMED, Mariam ,  SUBRAHMANYA, Parvathanathan

Inventor： ABRISHAMKAR, Farrokh ,  MOTAMED, Mariam ,  SUBRAHMANYA, Parvathanathan

IPC: H04L25/02

Abstract: Techniques for performing adaptive channel estimation are described. A receiver derives channel estimates for a wireless channel based on received pilot symbols and at least one estimation parameter. The receiver updates the at least one estimation parameter based on the received pilot symbols. The at least one estimation parameter may be for an innovations representation model of the wireless channel and may be updated based on a cost function with costs defined by prediction errors. In one design, the receiver derives predicted pilot symbols based on the received pilot symbols and the at least one estimation parameter, determines prediction errors based on the received pilot symbols and the predicted pilot symbols, and further derives error gradients based on the prediction errors. The receiver then updates the at least one estimation parameter based on the error gradients and the prediction errors, e.g., if a stability test is satisfied.

公开(公告)号：WO2008061167A1

公开(公告)日：2008-05-22

申请号：PCT/US2007/084750

申请日：2007-11-15

Applicant: QUALCOMM INCORPORATED ,  SHIM, Byonghyo ,  ABRISHAMKAR, Farrokh ,  KANG, Inyup

Inventor： SHIM, Byonghyo ,  ABRISHAMKAR, Farrokh ,  KANG, Inyup

IPC: H04B1/707

CPC classification number: H04B1/71072 ,  H04B1/71055 ,  H04B1/71075 ,  H04B1/7115 ,  H04B2201/70702

Abstract: Techniques for recovering a desired transmission in the presence of interfering transmissions are described. For iterative detection and cancellation, multiple groups of code channels are formed for a plurality of code channels for at least one sector. Processing is performed for the multiple groups of code channels in multiple iterations. For each iteration, data detection and signal cancellation are performed for the multiple groups of code channels in multiple stages, e.g., in a sequential order starting with the strongest group to the weakest group. Each stage of each iteration may perform data detection, signal reconstruction, and signal cancellation. Each stage of each iteration may also perform equalization, data detection, signal reconstruction, and signal cancellation.

Abstract translation: 描述了在存在干扰传输的情况下恢复所需传输的技术。 对于迭代检测和消除，针对至少一个扇区的多个代码信道形成多组代码信道组。 在多个迭代中针对多组代码信道执行处理。 对于每个迭代，对于多个阶段的多组代码信道执行数据检测和信号消除，例如以从最强组到最弱组的顺序顺序执行。 每个迭代的每个阶段都可以执行数据检测，信号重建和信号消除。 每个迭代的每个阶段也可以执行均衡，数据检测，信号重建和信号消除。