公开(公告)号：US07372895B2

公开(公告)日：2008-05-13

申请号：US11007687

申请日：2004-12-08

Applicant: Andres Reial

Inventor： Andres Reial

IPC: H04B1/69 ,  H04B1/707 ,  H04B1/713

CPC classification number: H04B1/7113 ,  H04B1/70757 ,  H04B1/7117

Abstract: A signal-path delay-estimation method includes correlating a computed coarse delay profile of at least one detected signal path cluster with a waveform to yield a strongest correlated peak for each of the at least one detected signal path cluster. The method also includes, for each of the at least one detected signal path cluster, using the strongest correlated peak to determine an adjusted delay-profile phase, re-sampling the computed coarse delay profile in accordance with the adjusted delay-profile phase, and detecting signal-path-cluster edges using the re-sampled computed coarse delay profile. This Abstract is provided to comply with rules requiring an Abstract that allows a searcher or other reader to quickly acertain subject matter of the technical disclosure. This Abstract is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims. 37 CFR 1.72(b).

Abstract translation: 信号路径延迟估计方法包括将计算出的至少一个检测信号路径簇的粗略延迟分布与波形相关联，以产生至少一个检测信号路径簇中的每一个的最强相关峰值。 所述方法还包括对于所述至少一个检测信号路径簇中的每一个，使用最强相关峰来确定经调整的延迟轮廓相位，根据所调整的延迟轮廓相位对所计算的粗延迟分布进行重新采样，以及 使用重新采样的计算粗略延迟分布来检测信号路径 - 簇边缘。 提供本摘要以符合要求摘要的规则，允许搜索者或其他读者快速掌握技术公开的主题。 提交本摘要的理解是，它不会用于解释或限制权利要求的范围或含义。 37 CFR 1.72（b）。

公开(公告)号：US20070041431A1

公开(公告)日：2007-02-22

申请号：US10558613

申请日：2004-05-14

Applicant: Andres Reial

Inventor： Andres Reial

IPC: H04B1/00

CPC classification number: H04B1/7113 ,  H04B1/7117

Abstract: Multipath components of a signal transmitted through a time-varying digital radio channel are received with individual delays (τ) within a range (τ1 . . . τM) of possible delay values. The individual delays are estimated and a delay profile (g(τi)) calculated repetitively. The method comprises searching repetitively for new multipath components in a search window constituting a subset of the possible delays, and positioning the search window based on a previous delay profile (g(τi)). For each of a number of search window positions (k) a sum of power is determined for the multipath components located in the search window with that position, and the position of the search window is selected based on the determined sums of power. In this way the multipath detection is less influenced by the noise floor, and it is also effective for channels having a wide delay spread and/or significantly time-varying delay profiles.

Abstract translation: 通过时变数字无线电信道发送的信号的多路径分量被接收，其中可能的范围内的各个延迟（τ）在单个延迟（τ）的范围内（τ1） 延迟值。 估计各个延迟并且重复地计算延迟分布（g（τ≠i））。 该方法包括在构成可能延迟的子集的搜索窗口中重复搜索新的多径分量，以及基于先前的延迟分布（g（τ））定位搜索窗口。 对于多个搜索窗口位置（k）中的每一个，针对位于具有该位置的搜索窗口中的多路径分量确定功率总和，并且基于确定的功率总和来选择搜索窗口的位置。 以这种方式，多路径检测较少受本底噪声的影响，并且对于具有宽延迟扩展和/或显着时变延迟分布的信道也是有效的。

公开(公告)号：US06917904B1

公开(公告)日：2005-07-12

申请号：US10755803

申请日：2004-01-12

Applicant: Andres Reial

Inventor： Andres Reial

IPC: H04B1/707 ,  G06F15/00

CPC classification number: H04B1/7113 ,  H04B1/70754 ,  H04B1/7117 ,  H04B1/712

Abstract: An average position estimate is determined using an instantaneous position estimate, a previously-determined average position estimate, a previously-determined average signal power, and an instantaneous signal power. The average signal power is determined using the previously-determined average signal power and the instantaneous signal power.

Abstract translation: 使用瞬时位置估计，预先确定的平均位置估计，预先确定的平均信号功率和瞬时信号功率来确定平均位置估计。 使用预先确定的平均信号功率和瞬时信号功率来确定平均信号功率。

公开(公告)号：US08855172B2

公开(公告)日：2014-10-07

申请号：US13316084

申请日：2011-12-09

Applicant: Andres Reial

Inventor： Andres Reial

IPC: H04B1/709

CPC classification number: H04L25/03133 ,  H04B2201/70701

Abstract: Communication signal processing entails generating an overall signal correlation estimate that reflects overall impairment present in a received signal before despreading. Processing further includes parametrically constructing one or more component-specific correction terms as a function of one or more component signal correlation estimates, each estimate reflecting a particular component of the overall impairment. Combining weights are derived, as a function of this overall estimate and the correction term(s), so that they exclude the contribution of the impairment component(s) to the overall impairment. These weights are used to combine signal samples in an equalization process. As the combining weights exclude the contribution of the impairment component(s) to the overall impairment, the equalization process utilizing the weights exclusively suppresses impairment that is not attributable to the component(s). This advantageously avoids redundant suppression of the impairment component(s), since processing further includes despreading the received signal in a despreading process that suppresses the component(s).

Abstract translation: 通信信号处理需要产生总体信号相关估计，其反映在解扩之前在接收信号中存在的总体损害。 处理进一步包括参数地构造一个或多个组件特定校正项作为一个或多个分量信号相关估计的函数，每个估计反映整体损伤的特定分量。 作为该总体估计和校正期限的函数，导出权重的组合，使得它们不包括减值成分对整体损益的贡献。 这些权重用于在均衡过程中组合信号样本。 由于组合权重不包括损害成分对总体损害的贡献，所以利用权重的均衡处理仅仅抑制不归因于成分的损失。 这有利地避免了损伤部件的冗余抑制，因为处理进一步包括在抑制部件的解扩过程中解扩接收到的信号。

公开(公告)号：US08842789B2

公开(公告)日：2014-09-23

申请号：US13679064

申请日：2012-11-16

Applicant: Andres Reial

Inventor： Andres Reial

IPC: H04B1/10 ,  H04L25/02

CPC classification number: H04L25/0204 ,  H04L25/0222

Abstract: Embodiments herein include a method of channel estimation in a wireless communication node. The method comprises generating, based on samples of a received signal, initial estimates of a plurality of channel coefficients forming a channel response. The method also entails, for each of the channel coefficients, dynamically calculating a coefficient-specific filter span for that channel coefficient. Notably, the coefficient-specific filter span for any given channel coefficient is calculated according to a closed-form function that minimizes aggregated estimation noise for the channel coefficient and estimation bias attributable to errors in tracking the channel coefficient. The method finally includes adapting filtering of the initial estimates independently for each of the channel coefficients to be performed over the coefficient-specific filter span calculated for that channel coefficient.

Abstract translation: 本文的实施例包括在无线通信节点中的信道估计的方法。 该方法包括基于接收信号的采样来生成形成信道响应的多个信道系数的初始估计。 对于每个信道系数，该方法还需要动态地计算该信道系数的系数特定滤波器跨度。 值得注意的是，根据封闭形式函数计算任何给定通道系数的系数特定滤波器跨度，其最小化通道系数的聚合估计噪声和归因于跟踪通道系数的误差的估计偏差。 该方法最终包括针对要在针对该信道系数计算的系数特定滤波器范围上执行的每个信道系数独立地适应初始估计的滤波。

公开(公告)号：US08761144B2

公开(公告)日：2014-06-24

申请号：US11952002

申请日：2007-12-06

Applicant: Andres Reial ,  Lennart Andersson

Inventor： Andres Reial ,  Lennart Andersson

IPC: H04B7/216

CPC classification number: H04L1/0038 ,  H04L1/0046 ,  H04L1/1812 ,  H04L1/1829

Abstract: The number of blind decoding operations in a wireless communication receiver is reduced. In one embodiment, a candidate set of transport formats is formed by eliminating one or more allowed transport formats, thus reducing the number of decode operations to be performed. In another embodiment, a received data transmission is partially decoded according to each of a plurality of transport formats, and decode quality metrics associated with each transport format are inspected. Only the transport formats yielding sufficiently high quality metrics are utilized to fully decode the transmission. In other embodiments, upon failure to successfully decode a received transmission, it is assumed to be a retransmission with a missed control transmission, and one or more transport formats specifying the position of a previous transmission in a buffer are added to the candidate set of transport formats. The received retransmission and previously received transmission are then HARQ combined and decoded.

Abstract translation: 减少无线通信接收机中的盲解码操作的数量。 在一个实施例中，通过消除一个或多个允许的传输格式来形成候选传输格式集合，从而减少要执行的解码操作的数量。 在另一个实施例中，根据多种传输格式中的每一种对接收到的数据传输进行部分解码，并检查与每种传输格式相关联的解码质量度量。 仅使用产生足够高的质量度量的传输格式来完全解码传输。 在其他实施例中，在成功解码所接收的传输失败之后，假定是具有错过控制传输的重传，并且将指定缓冲器中的先前传输的位置的一个或多个传输格式添加到候选传输组 格式。 接收到的重传和先前接收的传输然后进行HARQ组合和解码。

公开(公告)号：US20140140454A1

公开(公告)日：2014-05-22

申请号：US13679064

申请日：2012-11-16

Applicant: Andres Reial

Inventor： Andres Reial

IPC: H04L25/02

CPC classification number: H04L25/0204 ,  H04L25/0222

Abstract: Embodiments herein include a method of channel estimation in a wireless communication node. The method comprises generating, based on samples of a received signal, initial estimates of a plurality of channel coefficients forming a channel response. The method also entails, for each of the channel coefficients, dynamically calculating a coefficient-specific filter span for that channel coefficient. Notably, the coefficient-specific filter span for any given channel coefficient is calculated according to a closed-form function that minimizes aggregated estimation noise for the channel coefficient and estimation bias attributable to errors in tracking the channel coefficient. The method finally includes adapting filtering of the initial estimates independently for each of the channel coefficients to be performed over the coefficient-specific filter span calculated for that channel coefficient.

Abstract translation: 本文的实施例包括在无线通信节点中的信道估计的方法。 该方法包括基于接收信号的采样来生成形成信道响应的多个信道系数的初始估计。 对于每个信道系数，该方法还需要动态地计算该信道系数的系数特定滤波器跨度。 值得注意的是，根据封闭形式函数计算任何给定通道系数的系数特定滤波器跨度，其最小化通道系数的聚合估计噪声和归因于跟踪通道系数的误差的估计偏差。 该方法最终包括针对要在针对该信道系数计算的系数特定滤波器范围上执行的每个信道系数独立地适应初始估计的滤波。

公开(公告)号：US08565706B2

公开(公告)日：2013-10-22

申请号：US12529185

申请日：2008-02-27

Applicant: Andres Reial

Inventor： Andres Reial

IPC: H04B1/06

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（Deltaphi）。

公开(公告)号：US20130202063A1

公开(公告)日：2013-08-08

申请号：US13364856

申请日：2012-02-02

Applicant: Andres Reial ,  Anders Wallén

Inventor： Andres Reial ,  Anders Wallén

IPC: H04B1/10

CPC classification number: H04J11/005 ,  H04B1/7103 ,  H04B1/7107 ,  H04J11/0059

Abstract: Techniques for expanding the set of addressable interfering signals in an interference cancelling receiver are described, where the task of control message detection from interfering cells is integrated in an iterative receiver process where increasingly better a priori information on the received data signals from the previous iteration is used to detect additional control messages and successively grow the set of interfering signals included in the receiver's interference mitigation processing. In an example method, first estimated symbols for a desired signal are generated. A control channel corresponding to a first interfering signal is detected, where said detecting is based on the first estimated symbols. Signal characteristics information for the first interfering signal is then derived from the detected control channel signal, and used to generate second estimated symbols for the desired signal, using an interference-mitigation technique to mitigate the effects of the interfering signal.

Abstract translation: 描述了用于在干扰消除接收机中扩展可寻址干扰信号集合的技术，其中来自干扰小区的控制消息检测的任务被集成在迭代接收机过程中，其中越来越好的来自先前迭代的接收数据信号的先验信息是 用于检测附加的控制消息并且连续地增加包括在接收机的干扰减轻处理中的干扰信号集合。 在示例性方法中，产生用于期望信号的第一估计符号。 检测对应于第一干扰信号的控制信道，其中所述检测基于第一估计符号。 然后从检测到的控制信道信号导出第一干扰信号的信号特征信息，并且使用干扰减轻技术来产生用于期望信号的第二估计符号，以减轻干扰信号的影响。

公开(公告)号：US20130148699A1

公开(公告)日：2013-06-13

申请号：US13316084

申请日：2011-12-09

Applicant: Andres Reial

Inventor： Andres Reial

IPC: H04B1/709 ,  H04L27/01

CPC classification number: H04L25/03133 ,  H04B2201/70701

Abstract: Communication signal processing entails generating an overall signal correlation estimate that reflects overall impairment present in a received signal before despreading. Processing further includes parametrically constructing one or more component-specific correction terms as a function of one or more component signal correlation estimates, each estimate reflecting a particular component of the overall impairment. Combining weights are derived, as a function of this overall estimate and the correction term(s), so that they exclude the contribution of the impairment component(s) to the overall impairment. These weights are used to combine signal samples in an equalization process. As the combining weights exclude the contribution of the impairment component(s) to the overall impairment, the equalization process utilizing the weights exclusively suppresses impairment that is not attributable to the component(s). This advantageously avoids redundant suppression of the impairment component(s), since processing further includes despreading the received signal in a despreading process that suppresses the component(s).

Abstract translation: 通信信号处理需要产生总体信号相关估计，其反映在解扩之前在接收信号中存在的总体损害。 处理进一步包括参数地构造一个或多个组件特定校正项作为一个或多个分量信号相关估计的函数，每个估计反映整体损伤的特定分量。 作为该总体估计和校正期限的函数，导出权重的组合，使得它们不包括减值成分对整体损益的贡献。 这些权重用于在均衡过程中组合信号样本。 由于组合权重不包括损害成分对总体损害的贡献，所以利用权重的均衡处理仅仅抑制不归因于成分的损失。 这有利地避免了损伤部件的冗余抑制，因为处理进一步包括在抑制部件的解扩过程中解扩接收到的信号。