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    • 3. 发明申请
    • Speed-Based, Hybrid Parametric/Non-parametric Equalization
    • 基于速度的混合参数/非参数均衡
    • US20090149147A1
    • 2009-06-11
    • US12107623
    • 2008-04-22
    • Elias JonssonDouglas A. CairnsKazuyoshi UesakaHiroaki Watabe
    • Elias JonssonDouglas A. CairnsKazuyoshi UesakaHiroaki Watabe
    • H04B1/10
    • H04B1/712H04B1/7097H04B2201/709727
    • 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.
    • 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。
    • 4. 发明授权
    • Method and apparatus for enhancing the accuracy of the estimated covariance matrix in wideband-CDMA systems
    • 用于提高宽带CDMA系统中估计的协方差矩阵的精度的方法和装置
    • US08582624B2
    • 2013-11-12
    • US12976519
    • 2010-12-22
    • Elias JonssonYoshitaka MurataJaroslaw NiewczasAmit SinghKazuyoshi Uesaka
    • Elias JonssonYoshitaka MurataJaroslaw NiewczasAmit SinghKazuyoshi Uesaka
    • H04B1/10
    • H04B1/712
    • 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.
    • 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。
    • 5. 发明申请
    • Method and Apparatus for Blind Detection of Secondary Pilot Signal in A Wireless Communication System
    • 无线通信系统中二次导频信号盲检测方法及装置
    • US20130279555A1
    • 2013-10-24
    • US13452652
    • 2012-04-20
    • Elias JonssonKazuyoshi Uesaka
    • Elias JonssonKazuyoshi Uesaka
    • H04B1/10H04B17/00
    • H04L25/0226H04L5/0051
    • 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.
    • 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。
    • 6. 发明授权
    • Method and apparatus for blind detection of secondary pilot signal in a wireless communication system
    • 在无线通信系统中盲检测次导频信号的方法和装置
    • US08837556B2
    • 2014-09-16
    • US13452652
    • 2012-04-20
    • Elias JonssonKazuyoshi Uesaka
    • Elias JonssonKazuyoshi Uesaka
    • H04B1/00
    • H04L25/0226H04L5/0051
    • 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.
    • 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。
    • 7. 发明授权
    • Blind detection of modulation configuration for interfering signals
    • 用于干扰信号的调制配置的盲检测
    • US08699546B2
    • 2014-04-15
    • US13452399
    • 2012-04-20
    • Elias JonssonKazuyoshi Uesaka
    • Elias JonssonKazuyoshi Uesaka
    • H04B1/00
    • H04B1/7115H04B1/7107
    • Techniques are disclosed for determining which channelization codes are used for an interfering HS-PDSCH transmission without knowing whether a neighboring UE targeted by that transmission has had its 64QAM capability activated by higher layer signaling. The average amplitude is measured for each of several possible groups of channelization codes for each of one or more nearby UEs that might be the targets of interfering HS-PDSCH messages. Testing whether the amplitude is approximately the same across the codes in a possible combination of channelization codes yields a metric value that indicates whether that particular combination of codes is likely to be transmitted to a given UE. A second metric that detects the most likely modulation for possible groups of channelization codes is also calculated. The metrics are combined to determine which combination of channelization codes and modulation scheme is most likely being used for addressing the neighboring UE.
    • 公开了用于确定哪些信道化码用于干扰HS-PDSCH传输的技术,而不知道该传输所针对的相邻UE是否具有由较高层信令激活的其64QAM能力。 对于可能是干扰HS-PDSCH消息的目标的一个或多个附近的UE中的每一个,测量平均幅度中的每一个信道化码的每一个。 在信道化码的可能组合中,测试码之间的振幅是否大致相同,产生指示代码的特定组合是否可能被发送给给定UE的度量值。 还计算了针对可能的信道化码组可能调制的第二个度量。 组合度量以确定信道化码和调制方案的哪个组合最可能用于寻址相邻UE。
    • 8. 发明申请
    • Blind Detection of Modulation Configuration for Interfering Signals
    • 用于干扰信号的调制配置的盲检测
    • US20130279547A1
    • 2013-10-24
    • US13452399
    • 2012-04-20
    • Elias JonssonKazuyoshi Uesaka
    • Elias JonssonKazuyoshi Uesaka
    • H04B1/7115
    • H04B1/7115H04B1/7107
    • Techniques are disclosed for determining which channelization codes are used for an interfering HS-PDSCH transmission without knowing whether a neighboring UE targeted by that transmission has had its 64QAM capability activated by higher layer signaling. The average amplitude is measured for each of several possible groups of channelization codes for each of one or more nearby UEs that might be the targets of interfering HS-PDSCH messages. Testing whether the amplitude is approximately the same across the codes in a possible combination of channelization codes yields a metric value that indicates whether that particular combination of codes is likely to be transmitted to a given UE. A second metric that detects the most likely modulation for possible groups of channelization codes is also calculated. The metrics are combined to determine which combination of channelization codes and modulation scheme is most likely being used for addressing the neighboring UE.
    • 公开了用于确定哪些信道化码用于干扰HS-PDSCH传输的技术,而不知道该传输所针对的相邻UE是否具有由较高层信令激活的其64QAM能力。 对于可能是干扰HS-PDSCH消息的目标的一个或多个附近的UE中的每一个,测量平均幅度中的每一个信道化码的每一个。 在信道化码的可能组合中,测试码之间的振幅是否大致相同,产生指示代码的特定组合是否可能被发送给给定UE的度量值。 还计算了针对可能的信道化码组可能调制的第二个度量。 组合度量以确定信道化码和调制方案的哪个组合最可能用于寻址相邻UE。
    • 10. 发明申请
    • Signal Reception with Adjustable Processing Delay Placement
    • 信号接收与可调处理延迟放置
    • US20100238980A1
    • 2010-09-23
    • US12408939
    • 2009-03-23
    • Douglas A. CairnsElias JonssonKazuyoshi Uesaka
    • Douglas A. CairnsElias JonssonKazuyoshi Uesaka
    • H04B1/707
    • H04B1/7115H04B1/7117H04B2201/709727H04L25/0216
    • The placement of processing delays may be adjusted to facilitate signal reception. In an example embodiment, a composite signal having multiple signal images corresponding to multiple reception delays is received. A root-mean-square (RMS) delay spread is ascertained for the multiple reception delays that correspond to the multiple signal images of the composite signal. A set of temporal points is produced responsive to the RMS delay spread. Multiple processing delays are placed based on the set of temporal points. In different example implementations, the set of temporal points (e.g., of a grid) may be produced by adjusting a spacing between temporal points, by adjusting a total number of temporal points in the set, or by changing a center location of the set. The spacing and number of points may be adjusted responsive to the RMS delay spread. The center location may be adjusted responsive to at least one calculated delay.
    • 可以调整处理延迟的布置以促进信号接收。 在示例实施例中,接收具有对应于多个接收延迟的多个信号图像的复合信号。 确定对应于复合信号的多个信号图像的多个接收延迟的均方根(RMS)延迟扩展。 响应于RMS延迟扩展产生一组时间点。 基于一组时间点放置多个处理延迟。 在不同的示例实现中,可以通过调整时间点之间的间隔,通过调整集合中的时间点的总数,或者通过改变集合的中心位置来产生时间点集合(例如,网格)。 响应于RMS延迟扩展可以调整点的间隔和数量。 可以响应于至少一个计算的延迟来调整中心位置。