公开(公告)号：US20100081403A1

公开(公告)日：2010-04-01

申请号：US12529185

申请日：2008-02-27

Applicant: Andres Reial

Inventor： Andres Reial

IPC: H04B17/02

CPC classification number: H04B1/7117 ,  H04B7/086 ,  H04B7/0897

Abstract: A RAKE receiver is adapted to receive input from at least a first and a second antenna (104a, 104b). The RAKE receiver comprises a despreading unit (303) adapted to allocate a number (Nf) of despreading fingers to a number of delay positions of a signal which is transmitted over a channel. The RAKE receiver further comprises a delay position selection unit (305) which estimates an antenna correlation (formula 1) between the at least first and second antenna (104a, 104b) and controls the despreading unit (303) according to a first strategy for allocating the number (Nf) of fingers if the antenna correlation (formula 1) is below a predetermined threshold, and according to a second strategy otherwise. The threshold (formula 2) is selected based on at least one of the following: number of available finger in the RAKE receiver (Nf), dispersion of the channel, range of direction of arrivals (Δφ).

Abstract translation: RAKE接收机适于从至少第一和第二天线（104a，104b）接收输入。 RAKE接收机包括解扩单元（303），该解扩单元（303）适于将数量（Nf）个解扩手指分配给通过信道发送的信号的多个延迟位置。 RAKE接收机还包括延迟位置选择单元（305），其估计所述至少第一和第二天线（104a，104b）之间的天线相关性（公式1），并根据用于分配的第一策略来控制解扩单元（303） 如果天线相关（公式1）低于预定阈值，并且根据第二策略，则手指的数量（Nf）。 基于以下中的至少一个来选择阈值（公式2）：RAKE接收机（Nf）中的可用手指的数量，信道的色散，到达方向的范围（＆Dgr＆amp; Phgr）。

公开(公告)号：US20100056170A1

公开(公告)日：2010-03-04

申请号：US12204040

申请日：2008-09-04

Applicant: Bengt Lindoff ,  Andres Reial ,  Anders Rosenqvist

Inventor： Bengt Lindoff ,  Andres Reial ,  Anders Rosenqvist

IPC: H04Q7/20

CPC classification number: H04L1/0026 ,  H04W72/082

Abstract: Methods and apparatus for adaptively transmitting data in a wireless communication network are disclosed, in which channel conditions between a mobile terminal and two or more base stations in an active set are evaluated and used to select a transmission mode from a set of available downlink transmission modes including a non-interference-coordinated point-to-point transmission mode as well as at least one of a multi-cell single-frequency-network transmission mode and an interference-coordinated point-to-point transmission mode. Using the dynamic transmission mode selection described herein, a higher cell-edge throughput in HSDPA systems may be achieved.

Abstract translation: 公开了一种用于在无线通信网络中自适应地发送数据的方法和装置，其中评估活动集中的移动终端与两个或多个基站之间的信道条件，并用于从一组可用的下行链路传输模式中选择传输模式 包括无干扰协调的点对点传输模式以及多小区单频网传输模式和干扰协调点对点传输模式中的至少一个。 使用本文描述的动态传输模式选择，可以实现HSDPA系统中更高的小区边缘吞吐量。

公开(公告)号：US20100054373A1

公开(公告)日：2010-03-04

申请号：US12201303

申请日：2008-08-29

Applicant: Andres Reial

Inventor： Andres Reial

IPC: H03D1/04

CPC classification number: H04L25/03305

Abstract: The teachings herein disclose interference cancellation processing that uses hard decision logic for simplified estimation of interfering signals, in combination with soft scaling of the hard decisions for better interference cancellation performance, particularly in low signal quality conditions. In one aspect, the soft scaling may be understood as attenuating the amount of interference cancellation applied by a receiver, in dependence on the dynamically changing received signal quality at the receiver. More attenuation is applied at lower signal quality because the hard decisions are less reliable at lower signal qualities, while less (or no) attenuation is applied at higher signal qualities, reflecting the higher reliability of the hard decisions at higher signal qualities. Signal quality may be quantized into ranges, with a different value of soft scaling factor used for each range, or a soft scaling factor may be calculated for the continuum of measured signal quality.

Abstract translation: 本文的教导公开了干扰消除处理，其使用硬判决逻辑来简化干扰信号的估计，结合硬判决的软缩放以获得更好的干扰消除性能，特别是在低信号质量条件下。 在一个方面，软缩放可以被理解为根据接收机处的动态变化的接收信号质量来衰减由接收机施加的干扰消除量。 在更低的信号质量下应用更多的衰减，因为在较低的信号质量下硬判决不太可靠，而在更高的信号质量下应用更少（或不）衰减），这反映出在较高信号质量下硬判决的可靠性更高。 信号质量可以被量化到范围内，具有用于每个范围的软缩放因子的不同值，或者可以为测量信号质量的连续性计算软缩放因子。

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：US20090268787A1

公开(公告)日：2009-10-29

申请号：US12111526

申请日：2008-04-29

Applicant: Douglas A. Cairns ,  Stephen J. Grant ,  Andres Reial ,  Mathias Riback

Inventor： Douglas A. Cairns ,  Stephen J. Grant ,  Andres Reial ,  Mathias Riback

IPC: H04L27/06

CPC classification number: H04B1/712 ,  H04B1/7105 ,  H04B1/7117 ,  H04B2201/709727

Abstract: According to the teachings presented herein, a wireless communication apparatus compensates for timing misalignment in its received signal processing. In at least one embodiment, the apparatus estimates a set of path delays for a received signal and sets processing delays on the estimated path delays. The apparatus jointly hypothesizes combinations of fractional timing offsets for two or more paths, and computes a decision metric for each joint hypothesis that indicates the accuracy of the joint hypothesis. As non-limiting examples, the decision metric may be a signal quality metric, or a distance metric (such as between a measured net channel response and an effective net channel response reconstructed as a function of the combination of fractional timing offsets included in the joint hypothesis). The apparatus evaluates the decision metrics to identify a best estimate of timing misalignment, and correspondingly compensates coherent processing of the received signal.

Abstract translation: 根据本文提出的教导，无线通信装置补偿其接收信号处理中的定时未对准。 在至少一个实施例中，该装置估计接收信号的一组路径延迟并且对所估计的路径延迟设置处理延迟。 该装置共同假设两个或多个路径的分数定时偏移的组合，并且计算指示联合假设的准确性的每个联合假设的决策度量。 作为非限制性示例，决策度量可以是信号质量度量或距离度量（诸如在测量的净信道响应和作为包括在联合中的分数定时偏移的组合的函数之间重建的有效网络信道响应之间） 假设）。 设备评估决策度量以识别定时未对准的最佳估计，并相应地补偿接收信号的相干处理。

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：US07382292B1

公开(公告)日：2008-06-03

申请号：US11558579

申请日：2006-11-10

Applicant: Andres Reial

Inventor： Andres Reial

IPC: H03M7/00

CPC classification number: H04B1/7117 ,  H04B2201/709727

Abstract: In one or more embodiments, an over-sampling method and corresponding over-sampling circuit efficiently generate an over-sampled signal by determining sampling phases in the over-sampled signal that are unused by downstream processing of the over-sampled signal, and skipping the generation of output values for the over-sampled signal that correspond to the unused sampling phases. In a communication receiver embodiment, determining the unused sampling phases comprises, with respect to currently estimated multipath delays of a received communication signal from which the over-sampled signal is derived, determining which sampling phases in the over-sampled signal will not be used by a downstream processing circuit having known processing delay assignment constraints. The known delay assignment constraints comprise Rake finger placement constraints or channel equalizer tap placement constraints, for example.

Abstract translation: 在一个或多个实施例中，过采样方法和相应的过采样电路通过确定过采样信号中的未采样的采样相位有效地产生过采样信号，该过采样信号通过下采样信号的下行处理而跳过 产生对应于未使用的采样相位的过采样信号的输出值。 在通信接收机实施例中，确定未使用的采样相位包括对于从其中导出过采样信号的接收通信信号的当前估计的多径延迟，确定过采样信号中的哪些采样相位将不被 具有已知处理延迟分配约束的下游处理电路。 已知的延迟分配约束例如包括耙指放置约束或信道均衡器抽头布置约束。

公开(公告)号：US20080111724A1

公开(公告)日：2008-05-15

申请号：US11558579

申请日：2006-11-10

Applicant: Andres Reial

Inventor： Andres Reial

IPC: H03M1/00

CPC classification number: H04B1/7117 ,  H04B2201/709727

Abstract: In one or more embodiments, an over-sampling method and corresponding over-sampling circuit efficiently generate an over-sampled signal by determining sampling phases in the over-sampled signal that are unused by downstream processing of the over-sampled signal, and skipping the generation of output values for the over-sampled signal that correspond to the unused sampling phases. In a communication receiver embodiment, determining the unused sampling phases comprises, with respect to currently estimated multipath delays of a received communication signal from which the over-sampled signal is derived, determining which sampling phases in the over-sampled signal will not be used by a downstream processing circuit having known processing delay assignment constraints. The known delay assignment constraints comprise Rake finger placement constraints or channel equalizer tap placement constraints, for example.

Abstract translation: 在一个或多个实施例中，过采样方法和相应的过采样电路通过确定过采样信号中的未采样的采样相位有效地产生过采样信号，该过采样信号通过下采样信号的下行处理而跳过 产生对应于未使用的采样相位的过采样信号的输出值。 在通信接收机实施例中，确定未使用的采样相位包括对于从其中导出过采样信号的接收通信信号的当前估计的多径延迟，确定过采样信号中的哪些采样相位将不被 具有已知处理延迟分配约束的下游处理电路。 已知的延迟分配约束例如包括耙指放置约束或信道均衡器抽头布置约束。

公开(公告)号：US20080095279A1

公开(公告)日：2008-04-24

申请号：US11550901

申请日：2006-10-19

Applicant: Andres Reial ,  Karin Engdahl ,  Bo Goransson

Inventor： Andres Reial ,  Karin Engdahl ,  Bo Goransson

IPC: H04L27/06

CPC classification number: H04B1/712 ,  H04B2201/709727 ,  H04L25/03343 ,  H04L2025/03426

Abstract: A subset of modeled impairment correlation terms are selected for use in received signal processing. According to one embodiment, a subset of modeled impairment correlation terms is selected and a composite impairment correlation term is determined based on the subset of modeled impairment correlation terms. The composite impairment correlation term may be determined by scaling the modeled impairment correlation terms included in the subset by respective model fitting parameters. The scaled modeled impairment correlation terms are then combined to form the composite impairment correlation term. The subset of modeled impairment correlation terms may be selected based on their respective model fitting parameters. In one embodiment, the modeled impairment terms having a model fitting parameter that satisfy a threshold are included in the subset while those that do not are excluded. The composite impairment correlation term may be used for received signal processing, e.g., demodulation or signal-to-interference estimation.

Abstract translation: 选择模型损害相关项的子集用于接收信号处理。 根据一个实施例，选择模型化损害相关项的子集，并且基于建模的损害相关项的子集来确定复合损害相关项。 复合损害相关项可以通过用相应的模型拟合参数缩放包括在子集中的建模损伤相关项来确定。 然后将缩放的建模的损伤相关项组合以形成复合损害相关项。 可以基于它们各自的模型拟合参数来选择建模的损伤相关项的子集。 在一个实施例中，具有满足阈值的模型拟合参数的建模的损伤项包括在子集中，而不被排除。 复合损害相关项可以用于接收信号处理，例如解调或信号对干扰估计。

公开(公告)号：US07362792B2

公开(公告)日：2008-04-22

申请号：US10755760

申请日：2004-01-12

Applicant: Andres Reial

Inventor： Andres Reial

IPC: H04B1/69

CPC classification number: H04B1/7113 ,  H04B1/7117

Abstract: A method of determining a noise-corrected power delay profile includes determining a power delay profile and calculating a noise-corrected power delay profile. The step of calculating the noise-corrected power delay profile includes using a biased noise-floor power estimate, the power delay profile, and a noise-scaling factor.

Abstract translation: 确定噪声校正功率延迟分布的方法包括确定功率延迟分布并计算经噪声校正的功率延迟分布。 计算噪声校正功率延迟分布的步骤包括使用偏置的噪声层功率估计，功率延迟分布和噪声比例因子。