公开(公告)号：US20160043770A1

公开(公告)日：2016-02-11

申请号：US14922600

申请日：2015-10-26

Applicant: III Holdings 1, LLC

Inventor： Tommy Guess ,  Michael L. McCloud ,  Vijay Nagarajan ,  Gagandeep Singh Lamba

IPC: H04B1/7115

CPC classification number: H04B1/7115 ,  H04B1/71075 ,  H04B1/712 ,  H04B7/0845 ,  H04B7/0894 ,  H04B2201/70702 ,  H04J11/0063

Abstract: This invention teaches to the details of an interference suppressing receiver for suppressing intra-cell and inter-cell interference in coded, multiple-access, spread spectrum transmissions that propagate through frequency selective communication channels to a multiplicity of receive antennas. The receiver is designed or adapted through the repeated use of symbol-estimate weighting, subtractive suppression with a stabilizing step-size, and mixed-decision symbol estimates. Receiver embodiments may be designed, adapted, and implemented explicitly in software or programmed hardware, or implicitly in standard RAKE-based hardware either within the RAKE (i.e., at the finger level) or outside the RAKE (i.e., at the user or sub channel symbol level). Embodiments may be employed in user equipment on the forward link or in a base station on the reverse link. It may be adapted to general signal processing applications where a signal is to be extracted from interference.

Abstract translation: 本发明教导了用于抑制经频率选择通信信道传播到多个接收天线的编码，多址，扩频传输中的小区内和小区间干扰的干扰抑制接收机的细节。 通过重复使用符号估计加权，具有稳定步长的减法抑制和混合判决符号估计来设计或适配接收机。 接收机实施例可以在软件或编程硬件中被明确地设计，适应和实现，或隐含地在RAKE（即，在手指级）内或RAKE之外的标准基于RAKE的硬件中（即，在用户或子信道 符号级别）。 可以在前向链路上的用户设备或反向链路上的基站中采用实施例。 它可以适用于要从干扰中提取信号的一般信号处理应用。

公开(公告)号：US08879658B2

公开(公告)日：2014-11-04

申请号：US13896952

申请日：2013-05-17

Applicant: III Holdings 1, LLC

Inventor： Tommy Guess ,  Michael L McCloud ,  Vijay Nagarajan ,  Gagandeep Singh Lamba

IPC: H04B1/10 ,  H04B7/08 ,  H04L1/02 ,  H04J11/00

CPC classification number: H04B1/7115 ,  H04B1/71075 ,  H04B1/712 ,  H04B7/0845 ,  H04B7/0894 ,  H04B2201/70702 ,  H04J11/0063

Abstract: This invention teaches to the details of an interference suppressing receiver for suppressing intra-cell and inter-cell interference in coded, multiple-access, spread spectrum transmissions that propagate through frequency selective communication channels to a multiplicity of receive antennas. The receiver is designed or adapted through the repeated use of symbol-estimate weighting, subtractive suppression with a stabilizing step-size, and mixed-decision symbol estimates. Receiver embodiments may be designed, adapted, and implemented explicitly in software or programmed hardware, or implicitly in standard RAKE-based hardware either within the RAKE (i.e., at the finger level) or outside the RAKE (i.e., at the user or subchannel symbol level). Embodiments may be employed in user equipment on the forward link or in a base station on the reverse link. It may be adapted to general signal processing applications where a signal is to be extracted from interference.

Abstract translation: 本发明教导了用于抑制经频率选择通信信道传播到多个接收天线的编码，多址，扩频传输中的小区内和小区间干扰的干扰抑制接收机的细节。 通过重复使用符号估计加权，具有稳定步长的减法抑制和混合判决符号估计来设计或适配接收机。 接收器实施例可以在软件或编程硬件中明确设计，适应和实现，或隐含地在RAKE（即，在手指级）或RAKE外部（即在用户或子信道符号处）内的基于标准RAKE的硬件中 水平）。 实施例可以在前向链路上的用户设备中或反向链路上的基站中使用。 它可以适用于要从干扰中提取信号的一般信号处理应用。

公开(公告)号：US08681835B2

公开(公告)日：2014-03-25

申请号：US13402297

申请日：2012-02-22

Applicant: Yi-Pin Eric Wang ,  Stephen Grant ,  Ning He ,  Niklas Johansson ,  Michael Samuel Bebawy

Inventor： Yi-Pin Eric Wang ,  Stephen Grant ,  Ning He ,  Niklas Johansson ,  Michael Samuel Bebawy

IPC: H04B1/00

CPC classification number: H04W72/1278 ,  H04B1/71075 ,  H04B1/712 ,  H04W72/082

Abstract: In a receive node of a wireless network, an iterative multi-user multi-stage interference cancellation receiver is used. The receiver performs code-averaged equalization and chip chip-level code-specific interference over-cancellation on the received signals. This can result in a unified interference cancellation processing, and can avoid cumbersome calculations of code cross correlations that is required in symbol-level interference cancellation. A symbol-level code-averaged desired signal add-back is performed to address the over-cancellation of some desired signals.

Abstract translation: 在无线网络的接收节点中，使用迭代多用户多级干扰消除接收机。 接收机对接收到的信号执行代码平均均衡和芯片级代码特定的干扰过度消除。 这可以导致统一的干扰消除处理，并且可以避免在符号级干扰消除中所需的代码互相关的繁琐计算。 执行符号级代码平均期望信号加法来解决某些期望信号的过度消除。

公开(公告)号：US20140029706A1

公开(公告)日：2014-01-30

申请号：US13560095

申请日：2012-07-27

Applicant: Fu-Hsuan Chiu ,  Chun-Hsuan Kuo

Inventor： Fu-Hsuan Chiu ,  Chun-Hsuan Kuo

IPC: H04B1/10

CPC classification number: H04B1/71075 ,  H04B1/71055 ,  H04B1/71072

Abstract: In one embodiment, interference suppression is improved by improving convergence criteria. For some embodiments, convergence is improved by employing non-constant alpha-beta-weighting. For other embodiments, convergence is improved by employing successive interference suppression methods that have guaranteed convergence properties.

Abstract translation: 在一个实施例中，通过改进收敛标准来改善干扰抑制。 对于一些实施例，通过使用非常数α-β加权来提高收敛。 对于其他实施例，通过采用具有保证的收敛特性的连续的干扰抑制方法来提高收敛。

公开(公告)号：US08634794B2

公开(公告)日：2014-01-21

申请号：US12854633

申请日：2010-08-11

Applicant: Sairamesh Nammi ,  Narendra Tilwani

Inventor： Sairamesh Nammi ,  Narendra Tilwani

IPC: H04B1/10

CPC classification number: H04B1/71075 ,  H04B1/71072 ,  H04B2201/709736

Abstract: A method, apparatus, and radio receiver system for canceling multi-user interference in a single-carrier radio communication system. A front-end receiver such as a RAKE receiver receives a radio signal formatted in a sequence of frames, and outputs a plurality of user signals. A processing selector selects on a frame-by-frame basis, either a first signal processing chain that serially decodes and removes the interference contributions of the user signals, or a second signal processing chain that simultaneously decodes and removes the interference contributions of the user signals in parallel. The processing selector may select the first signal processing chain when the number of user signals is greater than or equal to a threshold value, and may select the second signal processing chain when the number of user signals is less than the threshold value.

Abstract translation: 一种用于在单载波无线电通信系统中消除多用户干扰的方法，装置和无线电接收机系统。 诸如RAKE接收机的前端接收机接收以帧序列格式化的无线电信号，并输出多个用户信号。 处理选择器逐帧地选择串行解码和去除用户信号的干扰贡献的第一信号处理链，或者同时解码和去除用户信号的干扰贡献的第二信号处理链 在平行下。 当用户信号的数量大于或等于阈值时，处理选择器可以选择第一信号处理链，并且当用户信号的数量小于阈值时，可以选择第二信号处理链。

公开(公告)号：US08630602B2

公开(公告)日：2014-01-14

申请号：US12484572

申请日：2009-06-15

Applicant: Rashid Ahmed A. Attar ,  Yu-Cheun Jou ,  Peter J. Black ,  Jun Ma

Inventor： Rashid Ahmed A. Attar ,  Yu-Cheun Jou ,  Peter J. Black ,  Jun Ma

IPC: H04B1/10

CPC classification number: H04B1/7107 ,  H04B1/71075 ,  H04B2201/70701 ,  H04L25/0224 ,  H04W52/12

Abstract: Techniques for generalized pilot interference cancellation in a communications receiver. In an exemplary embodiment, a residual pilot is cancelled from a post-traffic cancellation signal following initial first-pass pilot cancellation. Residual pilot cancellation is achieved by adding the first-pass cancelled pilot as earlier stored in memory back to the post-traffic cancellation signal, and pilot filtering the resulting signal to generate an improved pilot interference estimate. In an alternative exemplary embodiment, an arbitrary number of iterations may be applied to generate the pilot interference estimate by successively storing each generated pilot interference estimate in memory.

Abstract translation: 通信接收机中广义导频干扰消除技术。 在示例性实施例中，在初次首次通过导频消除之后，从后业务消除信号中消除残余导频。 剩余导频消除是通过将先前存储在存储器中的首次通过取消的导频返回到业务后消除信号来实现的，并对所得到的信号进行导频过滤以产生改进的导频干扰估计。 在替代示例性实施例中，可以应用任意数量的迭代来通过在存储器中连续地存储每个产生的导频干扰估计来生成导频干扰估计。

公开(公告)号：US08509698B2

公开(公告)日：2013-08-13

申请号：US13532410

申请日：2012-06-25

Applicant: Mark Hahm ,  Wei Luo ,  Thirunathan Sutharsan ,  Andrew du Preez ,  Bin Liu ,  Jun Wu ,  Severine Catreux-Erceg ,  Shuangquan Wang

Inventor： Mark Hahm ,  Wei Luo ,  Thirunathan Sutharsan ,  Andrew du Preez ,  Bin Liu ,  Jun Wu ,  Severine Catreux-Erceg ,  Shuangquan Wang

IPC: H04B1/00

CPC classification number: H04B1/71075 ,  H04B1/7115 ,  H04B1/712 ,  H04B2201/70702

Abstract: Aspects of a method and system for a programmable interference suppression module may include receiving a communication signal comprising one or more desired signal, and one or more undesired signals. The communication signal may be utilized to generate estimated channel state information. The estimated channel state information may be formatted for use in interference suppression. A reduced interference signal may be generated from a delayed version of said communications signal and the estimated channel state information, wherein the one or more undesired signals may be attenuated. The reduced interference signal may be formatted for post-processing. The desired signals may comprise WCDMA and/or HSDPA signals, and the undesired signals may be inter-cell and/or intra-cell interference. Further processing may comprise HSDPA processing and/or RAKE finger processing. The communication signal may be a Universal Mobile Telecommunication System (UMTS) compliant signal.

Abstract translation: 用于可编程干扰抑制模块的方法和系统的方面可以包括接收包括一个或多个期望信号的通信信号以及一个或多个不需要的信号。 通信信号可用于产生估计的信道状态信息。 估计的信道状态信息可以被格式化以用于干扰抑制。 可以从所述通信信号的延迟版本和所估计的信道状态信息产生减小的干扰信号，其中所述一个或多个不需要的信号可以被衰减。 减小的干扰信号可以被格式化用于后处理。 期望的信号可以包括WCDMA和/或HSDPA信号，并且不期望的信号可以是小区间和/或小区内干扰。 进一步的处理可以包括HSDPA处理和/或RAKE手指处理。 通信信号可以是符合通用移动通信系统（UMTS）的信号。

公开(公告)号：US20130077720A1

公开(公告)日：2013-03-28

申请号：US13402297

申请日：2012-02-22

Applicant: Yi-Pin Eric WANG ,  Stephen Grant ,  Ning He ,  Niklas Johansson ,  Michael Samuel Bebawy

Inventor： Yi-Pin Eric WANG ,  Stephen Grant ,  Ning He ,  Niklas Johansson ,  Michael Samuel Bebawy

IPC: H04B1/10

CPC classification number: H04W72/1278 ,  H04B1/71075 ,  H04B1/712 ,  H04W72/082

Abstract: In a receive node of a wireless network, an iterative multi-user multi-stage interference cancellation receiver is used. The receiver performs code-averaged equalization and chip chip-level code-specific interference over-cancellation on the received signals. This can result in a unified interference cancellation processing, and can avoid cumbersome calculations of code cross correlations that is required in symbol-level interference cancellation. A symbol-level code-averaged desired signal add-back is performed to address the over-cancellation of some desired signals.

Abstract translation: 在无线网络的接收节点中，使用迭代多用户多级干扰消除接收机。 接收机对接收到的信号执行代码平均均衡和芯片级代码特定的干扰过度消除。 这可以导致统一的干扰消除处理，并且可以避免在符号级干扰消除中所需的代码互相关的繁琐计算。 执行符号级代码平均期望信号加法来解决某些期望信号的过度消除。

公开(公告)号：US20130077670A1

公开(公告)日：2013-03-28

申请号：US13333478

申请日：2011-12-21

Applicant: Yi-Pin Eric Wang ,  Cagatay Konuskan ,  Gregory Bottomley ,  Jung-Fu Cheng ,  Niklas Johansson ,  Ning He ,  Stephen Grant

Inventor： Yi-Pin Eric Wang ,  Cagatay Konuskan ,  Gregory Bottomley ,  Jung-Fu Cheng ,  Niklas Johansson ,  Ning He ,  Stephen Grant

IPC: H04B1/10 ,  H04L27/01

CPC classification number: H04W72/1278 ,  H04B1/71075 ,  H04B1/712 ,  H04W72/082

Abstract: In a receive node of a wireless network, an iterative multi-user multi-stage interference cancellation receiver is used. After each stage of interference cancellation, interference characteristics change. An adaptive strategy is used in which after each stage of interference cancellation, impairment covariance is parametrically updated and combining weights of the receiver are adapted to reflect the updated impairment covariance.

Abstract translation: 在无线网络的接收节点中，使用迭代多用户多级干扰消除接收机。 在干扰消除的每个阶段之后，干扰特性发生变化。 使用自适应策略，其中在干扰消除的每个阶段之后，对损伤协方差进行参数更新，并且接收机的组合权重被适配以反映更新的损害协方差。

公开(公告)号：US08325588B2

公开(公告)日：2012-12-04

申请号：US12515309

申请日：2007-11-16

Applicant: Seong-Rag Kim ,  Jun-Young Nam ,  Hyun-Kyu Chung

Inventor： Seong-Rag Kim ,  Jun-Young Nam ,  Hyun-Kyu Chung

IPC: H04J11/00 ,  H04W4/00 ,  H04B7/216 ,  H04B1/00

CPC classification number: H04L25/0204 ,  H04B1/71075 ,  H04B17/345 ,  H04B2201/70702 ,  H04L25/022 ,  H04L25/0224 ,  H04L25/03159 ,  H04L25/03292 ,  H04L25/03305 ,  H04L25/03318 ,  H04L25/067 ,  H04L2025/03414 ,  H04L2025/03426

Abstract: An iterative reception method and iterative receiver in a mobile communication system are provided. In order to remove inter-cell interference of a signal that is iteratively received in a multi-cell environment, a soft determination value of different cells excluding a specific cell is re-spread to be used. In addition, in order to improve reception performance of the iterative receiver that performs the interference removal by using the soft determination value, channel estimation is iteratively performed on the iteratively received signal by using a soft determination value of a previous order of the specific cell to update a channel estimation value. Accordingly, it is possible to reduce complexity of implementation and effectively remove the inter-cell interference by using the soft determination value.

Abstract translation: 提供了一种移动通信系统中的迭代接收方法和迭代接收机。 为了消除在多小区环境中迭代地接收的信号的小区间干扰，重新扩展除了特定小区之外的不同小区的软判定值。 此外，为了通过使用软判定值来改善执行干扰去除的迭代接收机的接收性能，通过使用特定小区的先前顺序的软判定值对迭代接收的信号迭代地执行信道估计， 更新信道估计值。 因此，可以通过使用软判定值来降低实现的复杂度并有效地消除小区间干扰。