公开(公告)号：US20100054309A1

公开(公告)日：2010-03-04

申请号：US12198973

申请日：2008-08-27

Applicant: Douglas A. Cairns ,  Elias Jonsson ,  Anders Rosenqvist ,  Andres Reial ,  Stephen Grant

Inventor： Douglas A. Cairns ,  Elias Jonsson ,  Anders Rosenqvist ,  Andres Reial ,  Stephen Grant

IPC: H04B1/707

CPC classification number: H04B1/712 ,  H04B2201/709727

Abstract: With a nonparametric G-Rake receiver, combining weights may be determined using a nonparametric mechanism in multiple-input, multiple-output (MIMO) scenarios. In an example embodiment, a method for a receiving device having a nonparametric G-Rake receiver entails calculating an impairment covariance matrix and determining combining weights. More specifically, the impairment covariance matrix is calculated based on a pilot channel using a nonparametric mechanism in a MIMO scenario in which a code-reuse interference term exists. The combining weights are determined for the nonparametric G-Rake receiver responsive to the impairment covariance matrix and by accounting for the code-reuse interference term.

Abstract translation: 使用非参数G-Rake接收机，可以使用多输入多输出（MIMO）场景中的非参数机制来确定组合权重。 在示例实施例中，具有非参数G-Rake接收机的接收设备的方法需要计算损害协方差矩阵并确定组合权重。 更具体地说，在存在码重用干扰项的MIMO场景中，基于使用非参数机制的导频信道来计算损害协方差矩阵。 针对非参数G-Rake接收机响应于损害协方差矩阵并通过计算代码重用干扰项来确定组合权重。

公开(公告)号：US20090149147A1

公开(公告)日：2009-06-11

申请号：US12107623

申请日：2008-04-22

Applicant: Elias Jonsson ,  Douglas A. Cairns ,  Kazuyoshi Uesaka ,  Hiroaki Watabe

Inventor： Elias Jonsson ,  Douglas A. Cairns ,  Kazuyoshi Uesaka ,  Hiroaki Watabe

IPC: H04B1/10

CPC classification number: H04B1/712 ,  H04B1/7097 ,  H04B2201/709727

Abstract: A mobile receiver having a multi-mode interference suppression function and a way to estimate its speed utilizes a parametric approach to interference suppression at high speeds, and a nonparametric approach at low speeds. In particular, if the mobile receiver is currently operating in a nonparametric mode and its speed exceeds a first predetermined threshold, the mobile receiver switches to a parametric mode. Conversely, if the mobile receiver is currently in parametric mode and its speed is less than a second predetermined threshold, the mobile receiver switches to nonparametric mode. In one embodiment, the speed may be estimated by a Doppler frequency in the received signal, and the thresholds are Doppler frequencies. In one embodiment, the first and second thresholds are different, creating a hysteresis in the mode switching.

Abstract translation: 具有多模式干扰抑制功能的移动接收机和估计其速度的方法利用高速干扰抑制的参数化方法和低速度的非参数方法。 特别地，如果移动接收机当前正在以非参数模式操作并且其速度超过第一预定阈值，则移动接收机切换到参数模式。 相反，如果移动接收机当前处于参数模式并且其速度小于第二预定阈值，则移动接收机切换到非参数模式。 在一个实施例中，可以通过接收信号中的多普勒频率来估计速度，并且阈值是多普勒频率。 在一个实施例中，第一和第二阈值是不同的，在模式切换中产生迟滞。

公开(公告)号：US07474648B2

公开(公告)日：2009-01-06

申请号：US10679439

申请日：2003-10-07

Applicant: Elias Jonsson ,  Hiroaki Watabe

Inventor： Elias Jonsson ,  Hiroaki Watabe

IPC: H04B7/216

CPC classification number: H04B1/7083 ,  H04B1/7113 ,  H04B1/7117

Abstract: A time slot boundary of an unknown cell in a telecommunications system is identified by correlating a received signal with a known code over a range of delay values for each of one or more time slots, wherein the known code is used by all cells in the telecommunications system. Only for each of the delay values that are not associated with a known cell, correlation values obtained at each of the one or more time slots are accumulated. The time slot boundary is identified by determining which of the delay values is associated with a highest accumulated correlation value. One or more stored monitored delay sets may be used to determine which delay values are not associated with a known cell. The one or more stored monitored delay sets may be filtered using delay information obtained over a period of time.

Abstract translation: 通过在一个或多个时隙中的每一个的延迟值的范围内将接收信号与已知代码相关联来识别电信系统中未知小区的时隙边界，其中已知代码由电信中的所有小区使用 系统。 仅对于与已知单元不相关联的每个延迟值，累积在一个或多个时隙中的每一个处获得的相关值。 通过确定哪个延迟值与最高累积相关值相关联来识别时隙边界。 可以使用一个或多个存储的监视延迟集合来确定哪些延迟值不与已知小区相关联。 可以使用在一段时间内获得的延迟信息来过滤一个或多个存储的监视延迟集。

公开(公告)号：US20080291981A1

公开(公告)日：2008-11-27

申请号：US11752014

申请日：2007-05-22

Applicant: Elias Jonsson ,  Andreas Cedergren

Inventor： Elias Jonsson ,  Andreas Cedergren

IPC: H04B1/76 ,  H04B1/707

CPC classification number: H04B1/712 ,  H04B2201/70701

Abstract: A receiver utilizes pilot channel propagation channel estimates and a signal-to-interference metric derived from the pilot channel to form combining weights for use in obtaining soft symbols from a desired channel for subsequent decoding. The soft symbols thus obtained are substantially independent of the pilot channel amplitude.

Abstract translation: 接收机利用导频信道传播信道估计和从导频信道导出的信号到干扰度量来形成用于从期望信道获得软符号以用于后续解码的组合权重。 如此获得的软符号基本上与导频信道幅度无关。

公开(公告)号：US20080205562A1

公开(公告)日：2008-08-28

申请号：US11679541

申请日：2007-02-27

Applicant: Elias Jonsson ,  Andres Reial

Inventor： Elias Jonsson ,  Andres Reial

IPC: H04B7/10

CPC classification number: H04W72/12 ,  H04B1/7103 ,  H04B1/712 ,  H04B7/0615 ,  H04B7/0669 ,  H04B7/0697 ,  H04B2201/70701 ,  H04B2201/709727 ,  Y02D70/40 ,  Y02D70/444

Abstract: The teachings herein disclose methods and apparatus that simplify impairment correlation estimation for received signal processing, based on determining, for any given processing interval, which impairment contributors should be considered in the estimation of overall received signal impairment correlations. These simplifications reduce computational processing requirements, allowing reduced circuit complexity and/or reduced operating power, and improve receiver performance. A corresponding transmitter and transmission method include transmitting multiple information streams to targeted receivers according to ongoing scheduling, and controlling the ongoing scheduling to reduce the number of impairment contributors considered in impairment correlation estimation at the targeted receivers. In one embodiment, a receiver identifies which impairment contributors to consider based on receiving control information. In another embodiment, the receiver identifies the impairment contributors to consider based on background processing, e.g., background determination of parametric model fitting parameters for a plurality of impairment contributors, and observing those model fitting parameters over time.

Abstract translation: 本文的教导公开了简化对接收信号处理的损害相关估计的方法和装置，其基于对于任何给定的处理间隔，在估计总体接收信号损害相关中应考虑哪些损害贡献者。 这些简化减少了计算处理要求，从而降低了电路复杂度和/或降低了操作功率，并提高了接收机性能。 相应的发射机和传输方法包括根据正在进行的调度向目标接收机发送多个信息流，并控制正在进行的调度，以减少目标接收机的损害相关估计中所考虑的损害贡献者的数量。 在一个实施例中，接收机基于接收控制信息识别要考虑的损害贡献者。 在另一个实施例中，接收机基于背景处理识别要考虑的损害贡献者，例如用于多个损害贡献者的参数模型拟合参数的背景确定，以及随时间观察这些模型拟合参数。

公开(公告)号：US20050143112A1

公开(公告)日：2005-06-30

申请号：US10499071

申请日：2002-12-18

Applicant: Elias Jonsson

Inventor： Elias Jonsson

IPC: H04B7/005 ,  H04B7/00

CPC classification number: H04W52/125 ,  H04W52/54

Abstract: A power control unit (500) for a power control system in a mobile communication system, the power control unit (500) comprising an inner power control loop element (503, 507), which generates a transmit power control command (504), and an outer power control loop element (516) connected to the inner power control loop element (503, 507), the outer power control loop element (516) being configured for providing a target value (506) to the inner power control loop element (503, 507). The outer power control loop element (516) comprises a soft information estimator (509) connected to at least one outer loop regulator (501, 502), wherein the soft information estimator (509) is configured to provide a soft information estimate (510) to the at least one outer loop regulator (503).

Abstract translation: 一种用于移动通信系统中的功率控制系统的功率控制单元（500），所述功率控制单元（500）包括产生发射功率控制命令（504）的内部功率控制环路元件（503,507），以及 外部功率控制回路元件（516），其被配置为向所述内部功率控制回路元件（503,507）提供目标值（506） 503，507）。 外部功率控制环路元件（516）包括连接到至少一个外部环路调节器（501,502）的软信息估计器（509），其中软信息估计器（509）被配置为提供软信息估计（510） 至少一个外环调节器（503）。

公开(公告)号：US08761317B2

公开(公告)日：2014-06-24

申请号：US13439357

申请日：2012-04-04

Applicant: Elias Jonsson

Inventor： Elias Jonsson

IPC: H04L27/06

CPC classification number: H03M13/6337 ,  H03M13/2957 ,  H04L25/021 ,  H04L25/0212 ,  H04L25/0238 ,  H04L25/067

Abstract: Log-likelihood ratios produced by a decoder are incorporated into a soft symbol to soft bit estimation process and are used to perform improved channel estimation and impairment covariance estimation. In an example method, a plurality of soft bits and corresponding probability metrics for a series of received unknown symbols are generated. Estimates of the received unknown information symbols are then regenerated, as a function of the soft bits and corresponding probability metrics. An estimate of the average amplitude of the received unknown information symbols, or an estimate of the propagation channel response experienced by the received unknown information symbols, or both, are calculated, as a function of the regenerated symbol estimates. The results are applied to produce demodulated symbols for a second decoding iteration for the series of received unknown symbols.

Abstract translation: 由解码器产生的对数似然比被并入到软符号到软比特估计过程中，并且用于执行改进的信道估计和损害协方差估计。 在示例性方法中，生成多个软比特和一系列接收到的未知符号的相应概率度量。 接收到的未知信息符号的估计随后根据软比特和相应的概率度量被重新生成。 作为再生的符号估计的函数，计算接收到的未知信息符号的平均幅度的估计，或由接收到的未知信息符号经历的传播信道响应的估计或两者。 结果被应用于产生用于所接收的未知符号序列的第二解码迭代的解调符号。

公开(公告)号：US08582624B2

公开(公告)日：2013-11-12

申请号：US12976519

申请日：2010-12-22

Applicant: Elias Jonsson ,  Yoshitaka Murata ,  Jaroslaw Niewczas ,  Amit Singh ,  Kazuyoshi Uesaka

Inventor： Elias Jonsson ,  Yoshitaka Murata ,  Jaroslaw Niewczas ,  Amit Singh ,  Kazuyoshi Uesaka

IPC: H04B1/10

CPC classification number: H04B1/712

Abstract: A set of channelization codes to be monitored is divided into two groups. The first group includes those codes for which an associated symbol modulation and transmit-diversity scheme is known. In the second group are those codes that are characterized by an unknown symbol modulation or unknown transmit-diversity scheme. The quality of the transmission of each code is then evaluated, using a metric. The metric in turn is used to determine whether the code should be used in estimating the covariance matrix by correlating the RAKE data corresponding to the code (i.e., by computing a correlation matrix for the code) or by first subtracting the channel estimates from the channel samples before correlation (i.e., by computing a covariance matrix for the code). An impairment covariance matrix is computed from the covariance matrices and correlation matrices so computed.

Abstract translation: 要监视的一组信道化代码被分为两组。 第一组包括已知相关联的码元调制和发射分集方案的那些码。 在第二组中是以未知符号调制或未知传输分集方案为特征的代码。 然后使用度量来评估每个代码的传输质量。 该度量依次用于确定代码是否应该用于通过将与代码相对应的RAKE数据相关联来估计协方差矩阵（即，通过计算代码的相关矩阵），或者首先从信道中减去信道估计 相关前的样本（即通过计算代码的协方差矩阵）。 根据所计算的协方差矩阵和相关矩阵计算损伤协方差矩阵。

公开(公告)号：US20130279555A1

公开(公告)日：2013-10-24

申请号：US13452652

申请日：2012-04-20

Applicant: Elias Jonsson ,  Kazuyoshi Uesaka

Inventor： Elias Jonsson ,  Kazuyoshi Uesaka

IPC: H04B1/10 ,  H04B17/00

CPC classification number: H04L25/0226 ,  H04L5/0051

Abstract: In one aspect, the present invention provides for blindly detecting the presence of one or more secondary pilot signals that are not being used to serve a communication apparatus, such as a User Equipment (UE). Among its several advantages, the approach to blind detection taught herein provides robust detection performance, yet it requires relatively few receiver resources. The contemplated apparatus, in at least one example embodiment, uses its blind detection of secondary pilot signal(s) to trigger suppression of secondary pilot interference, for improved reception performance. In a particular, non-limiting example, the apparatus operates in an HSDPA-MIMO network in a non-MIMO mode and blindly detects secondary pilot signal energy associated with the supporting network providing MIMO service to nearby equipment.

Abstract translation: 在一个方面，本发明提供盲目检测不用于服务诸如用户设备（UE）的通信设备的一个或多个辅助导频信号的存在。 在其几个优点中，本文教导的盲检测方法提供了鲁棒的检测性能，但它需要相对较少的接收器资源。 在至少一个示例性实施例中，所设想的装置使用其二次导频信号的盲检测来触发二次导频干扰的抑制，以改善接收性能。 在特定的非限制性示例中，设备以非MIMO模式在HSDPA-MIMO网络中操作，并且盲目地检测与向附近设备提供MIMO服务的支持网络相关联的辅助导频信号能量。

公开(公告)号：US20130266095A1

公开(公告)日：2013-10-10

申请号：US13439357

申请日：2012-04-04

Applicant: Elias Jonsson

Inventor： Elias Jonsson

IPC: H04L27/06

CPC classification number: H03M13/6337 ,  H03M13/2957 ,  H04L25/021 ,  H04L25/0212 ,  H04L25/0238 ,  H04L25/067

Abstract: Log-likelihood ratios produced by a decoder are incorporated into a soft symbol to soft bit estimation process and are used to perform improved channel estimation and impairment covariance estimation. In an example method, a plurality of soft bits and corresponding probability metrics for a series of received unknown symbols are generated. Estimates of the received unknown information symbols are then regenerated, as a function of the soft bits and corresponding probability metrics. An estimate of the average amplitude of the received unknown information symbols, or an estimate of the propagation channel response experienced by the received unknown information symbols, or both, are calculated, as a function of the regenerated symbol estimates. The results are applied to produce demodulated symbols for a second decoding iteration for the series of received unknown symbols.

Abstract translation: 由解码器产生的对数似然比被并入到软符号到软比特估计过程中，并且用于执行改进的信道估计和损害协方差估计。 在示例性方法中，生成多个软比特和一系列接收到的未知符号的相应概率度量。 接收到的未知信息符号的估计随后根据软比特和相应的概率度量被重新生成。 作为再生的符号估计的函数，计算接收到的未知信息符号的平均幅度的估计，或由接收到的未知信息符号经历的传播信道响应的估计或两者。 结果被应用于产生用于所接收的未知符号序列的第二解码迭代的解调符号。