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公开(公告)号：US20090225814A1
公开(公告)日：2009-09-10
申请号：US12097672
申请日：2006-12-12
申请人： Ahmet Bastug , Stefania Sesia
发明人： Ahmet Bastug , Stefania Sesia
IPC分类号： H04B1/707
CPC分类号： H04L25/03057 , H04B1/7105 , H04J13/004 , H04L2025/0335 , H04L2025/0349
摘要： The present invention relates to receiver apparatuses and methods of controlling weight adaptation in a receiver of a code multiplex telecommunications system with orthogonal spreading codes, wherein received discrete time signal samples are chip-level filtered by using a first equalising step. Additionally, the received discrete time signal samples are delayed by a time period corresponding to a data symbol and used in a second equalising step. Symbol estimates obtained from the first equalising step are non-linearly filtered and used as a desired response for the second equalising step in the following symbol period, wherein equaliser weights adapted in the second equalising step are used for the first equalising step. Alternatively, the second equalising step may be dispensed with and weight adaptation may be incorporated in a single equalising step. As an additional or alternative option, a hybrid equaliser architecture may be provided, where the above two-step equalisation is used during an active phase where a channel is allocated, while another weight updating scheme is used during an inactive phase where no channel is assigned. Thereby, detrimental effects of interference power can be reduced at low increase in complexity.
摘要翻译： 本发明涉及在具有正交扩展码的码多路复用电信系统的接收机中控制权重适应的接收机装置和方法，其中通过使用第一均衡步骤对接收的离散时间信号样本进行码片级滤波。 另外，接收的离散时间信号样本被延迟与数据符号对应的时间段，并在第二均衡步骤中使用。 从第一均衡步骤获得的符号估计被非线性滤波，并用作随后符号周期中的第二均衡步骤的期望响应，其中在第二均衡步骤中适应的均衡器权重用于第一均衡步骤。 或者，可以省略第二均衡步骤，并且可以在单个均衡步骤中并入权重适应。 作为附加或替代选项，可以提供混合均衡器架构，其中在分配信道的活动阶段期间使用上述两步均衡，而在不分配信道的非活动阶段期间使用另一权重更新方案 。 因此，可以在复杂性的低增加的情况下减少干扰功率的有害影响。
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公开(公告)号：US20100182172A1
公开(公告)日：2010-07-22
申请号：US12664438
申请日：2008-06-16
申请人： Filippo Tosato , Stefania Sesia
发明人： Filippo Tosato , Stefania Sesia
IPC分类号： H03M7/00
CPC分类号： H04B7/0663 , H04B7/0417 , H04B7/0639
摘要： The present invention relates to a method for encoding a vector for transmission from a transmitter to a receiver, comprising a step of selecting a first vector in a predefined M-dimensional vector codebook, and at least one refinement step wherein an error vector between the random vector and the first vector is quantised by means of selecting a further vector from a further vector codebook with dimensionality reduced by one relative to the previous step, wherein the M-dimensional vector codebook and the further predefined vector codebook are known to both the transmitter and receiver.
摘要翻译： 本发明涉及一种用于编码从发射机到接收机的传输的矢量的方法，包括选择预定M维向量码本中的第一矢量的步骤和至少一个细化步骤，其中随机 向量，并且通过从相对于前一步骤减小一维的另一向量码本中选择另外的向量来量化第一向量，其中M维向量码本和另外的预定义向量码本对于发射机和 接收器。
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公开(公告)号：US20130266085A1
公开(公告)日：2013-10-10
申请号：US13440771
申请日：2012-04-05
申请人： Stefania Sesia , Fabrizio Tomatis
发明人： Stefania Sesia , Fabrizio Tomatis
CPC分类号： H04B7/0413 , H04B7/0689 , H04W52/028 , Y02D70/1262 , Y02D70/142 , Y02D70/146 , Y02D70/444
摘要： Multiple-input multiple-output (MIMO) with multiple power amplifiers and antennas in a mobile transmitter, such as a user equipment for a cellular telephone communication system, has such great impacts on the transmitter's battery life, form factor, and complexity that it should not be used unless its benefits clearly outweigh its costs. Methods and apparatus enable the benefits of MIMO by beam-forming and antenna-switching to be obtained without incurring the drawbacks of increased current consumption due to multiple power amplifiers.
摘要翻译： 移动发射机中多个功率放大器和天线的多输入多输出（MIMO），如用于蜂窝电话通信系统的用户设备，对发射机的电池寿命，外形尺寸和复杂度有很大的影响 不得使用，除非其利益明显超过其成本。 方法和装置能够通过波束形成和天线切换获得MIMO的优点，而不会产生由于多个功率放大器引起的增加的电流消耗的缺点。
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公开(公告)号：US20130051261A1
公开(公告)日：2013-02-28
申请号：US13574358
申请日：2012-06-21
申请人： Muhammad Kazmi , Stefania Sesia
发明人： Muhammad Kazmi , Stefania Sesia
CPC分类号： H04B7/0693 , H04B7/0404 , H04B7/0608 , H04W52/0212 , H04W52/0277 , H04W52/367 , H04W52/42
摘要： Several advanced features in wireless network, such as multi-carrier operation, multi-RAT/multi-mode transmission, etc., may not be exploited to their fullest potential when uplink transmit diversity is used in conjunction with them. Several techniques described herein address these problems. An example method begins with the evaluation (610) of operating conditions for a mobile terminal transmitter and, based on the operating conditions, selectively activating or deactivating (620) multiple-antenna transmission by the mobile terminal. The operating conditions that are evaluated include, in some embodiments, the applicability of power backoff (maximum power reduction, or “MPR”), including whether Additional MPR (A-MPR) or power management MPR (P-MPR) are applicable. Other operating conditions that are evaluated may include uplink data rate requirements or limitations for the mobile terminal, and/or the actual or estimated status of the battery in the UE.
摘要翻译： 当上行链路传输分集与它们一起使用时，诸如多载波操作，多RAT /多模式传输等的无线网络中的若干高级特征可能不被充分利用。 这里描述的几种技术解决了这些问题。 示例性方法从对移动终端发射机的操作条件的评估（610）开始，并且基于操作条件选择性地激活或去激活（620）移动终端的多天线传输。 评估的操作条件在一些实施例中包括功率回退（最大功率降低或MPR）的适用性，包括附加MPR（A-MPR）或功率管理MPR（P-MPR）是否适用。 评估的其他操作条件可以包括上行链路数据速率要求或移动终端的限制，和/或UE中的电池的实际或估计状态。
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公开(公告)号：US08873662B2
公开(公告)日：2014-10-28
申请号：US13440771
申请日：2012-04-05
申请人： Stefania Sesia , Fabrizio Tomatis
发明人： Stefania Sesia , Fabrizio Tomatis
CPC分类号： H04B7/0413 , H04B7/0689 , H04W52/028 , Y02D70/1262 , Y02D70/142 , Y02D70/146 , Y02D70/444
摘要： Multiple-input multiple-output (MIMO) with multiple power amplifiers and antennas in a mobile transmitter, such as a user equipment for a cellular telephone communication system, has such great impacts on the transmitter's battery life, form factor, and complexity that it should not be used unless its benefits clearly outweigh its costs. Methods and apparatus enable the benefits of MIMO by beam-forming and antenna-switching to be obtained without incurring the drawbacks of increased current consumption due to multiple power amplifiers.
摘要翻译： 移动发射机中多个功率放大器和天线的多输入多输出（MIMO），如用于蜂窝电话通信系统的用户设备，对发射机的电池寿命，外形尺寸和复杂度有很大的影响 不得使用，除非其利益明显超过其成本。 方法和装置能够通过波束形成和天线切换获得MIMO的优点，而不会产生由于多个功率放大器引起的增加的电流消耗的缺点。
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公开(公告)号：US20090180522A1
公开(公告)日：2009-07-16
申请号：US12326762
申请日：2008-12-02
IPC分类号： H04B1/707
CPC分类号： H04B1/7115 , H04B1/7117
摘要： A scheme determines the first significant path (FSP) of a received multipath signal, from data defining the relative delay and the amplitude of the individual signal paths occurring in a series of time frames. The scheme includes filtering the data to spread the signal paths, performing a persistence test between frames to reject spurious signal paths, combining the energy of the signal paths in a frame, applying a test to determine the time at which the combined energy satisfies a criterion, and selecting the FSP dependent on that time. The combined energy may be evaluated within a sliding window, and the position of the window within the frame determined that maximizes the combined energy. Alternatively, the combined energy may be evaluated as the cumulative energy through the frame, and the position determined at which the cumulative energy reaches a threshold.
摘要翻译： 方案从定义在一系列时间帧中出现的各个信号路径的相对延迟和振幅的数据确定接收的多路径信号的第一有效路径（FSP）。 该方案包括对数据进行滤波以扩展信号路径，在帧之间执行持续测试以抑制寄生信号路径，组合帧中的信号路径的能量，应用测试来确定组合能量满足标准的时间 ，并根据该时间选择FSP。 可以在滑动窗口内评估组合的能量，并且确定框架内的窗口的位置使得组合的能量最大化。 或者，可以将组合的能量评估为通过该帧的累积能量，以及确定累积能量达到阈值的位置。
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公开(公告)号：US08934584B2
公开(公告)日：2015-01-13
申请号：US13127941
申请日：2009-11-05
申请人： Jean-Marc Aznar , Stefania Sesia , Laurent Noel
发明人： Jean-Marc Aznar , Stefania Sesia , Laurent Noel
CPC分类号： H04L27/08 , H03G3/3078 , H03G3/3089 , H04L27/06 , H04L27/156
摘要： An automatic gain control (AGC) method and system for a radio receiver are proposed in which the ACG comprises two AGC loops; a first loop controlling signal gain in the analog portion of the radio receiver, a second loop controlling gain in the digital domain after digitization of the received signal. The analog AGC loop has a slower response time than the digital AGC loop. When applied to a multi-branch diversity receiver, each branch has its own digital AGC loop, but the analog gain can be common to all branches, based on measurement of the analog signal in each branch.
摘要翻译： 提出了一种用于无线电接收机的自动增益控制（AGC）方法和系统，其中ACG包括两个AGC环路; 在无线电接收机的模拟部分中的第一环路控制信号增益，在接收信号的数字化之后，第二环路控制数字域中的增益。 模拟AGC环路的响应时间比数字AGC环路慢。 当应用于多分支分集接收机时，每个分支具有其自己的数字AGC环路，但是基于每个分支中的模拟信号的测量，模拟增益可以与所有分支通用。
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公开(公告)号：US08891698B2
公开(公告)日：2014-11-18
申请号：US12326762
申请日：2008-12-02
IPC分类号： H03D1/04 , H04B1/7115 , H04B1/7117
CPC分类号： H04B1/7115 , H04B1/7117
摘要： A scheme determines the first significant path (FSP) of a received multipath signal, from data defining the relative delay and the amplitude of the individual signal paths occurring in a series of time frames. The scheme includes filtering the data to spread the signal paths, performing a persistence test between frames to reject spurious signal paths, combining the energy of the signal paths in a frame, applying a test to determine the time at which the combined energy satisfies a criterion, and selecting the FSP dependent on that time. The combined energy may be evaluated within a sliding window, and the position of the window within the frame determined that maximizes the combined energy. Alternatively, the combined energy may be evaluated as the cumulative energy through the frame, and the position determined at which the cumulative energy reaches a threshold.
摘要翻译： 方案从定义在一系列时间帧中出现的各个信号路径的相对延迟和振幅的数据确定接收的多路径信号的第一有效路径（FSP）。 该方案包括对数据进行滤波以扩展信号路径，在帧之间执行持续测试以抑制寄生信号路径，组合帧中的信号路径的能量，应用测试来确定组合能量满足标准的时间 ，并根据该时间选择FSP。 可以在滑动窗口内评估组合的能量，并且确定框架内的窗口的位置使得组合能量最大化。 或者，可以将组合的能量评估为通过该帧的累积能量，以及确定累积能量达到阈值的位置。
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公开(公告)号：US20130215992A1
公开(公告)日：2013-08-22
申请号：US13394190
申请日：2012-02-21
申请人： Muhammad Kazmi , Stefania Sesia
发明人： Muhammad Kazmi , Stefania Sesia
IPC分类号： H04B7/06
CPC分类号： H04B7/0413 , H04B7/0465 , H04B7/086
摘要： A user equipment, UE, (14) and a radio network node (12) can perform multiple input multiple output, MIMO, communication. The UE determines a precoder (50, 54) used in the radio network node for transmitting signals from multiple transmit antennas to the UE. Based on the determined precoder used, the UE determines receiver parameters (22, 60A, 60B) for receiving MIMO signals from the radio network node, and configures the UE to receive MIMO signals from the radio network node in accordance with the determined receiver parameters. The radio network node may provide information for transmission to the UE indicating the precoder used in the radio network node to permit the UE to determine a receiver configuration for receiving MIMO signals based on the determined precoder used by the radio network node.
摘要翻译： 用户设备UE（14）和无线电网络节点（12）可以执行多输入多输出MIMO，通信。 UE确定在无线电网络节点中使用的用于将来自多个发射天线的信号发射到UE的预编码器（50,54）。 基于使用的确定的预编码器，UE确定用于从无线电网络节点接收MIMO信号的接收机参数（22,60A，60B），并且根据所确定的接收机参数来配置UE从无线电网络节点接收MIMO信号。 无线电网络节点可以提供用于传输给UE的信息，指示在无线电网络节点中使用的预编码器，以允许UE基于由无线电网络节点使用的所确定的预编码器来确定用于接收MIMO信号的接收机配置。
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公开(公告)号：US08111176B2
公开(公告)日：2012-02-07
申请号：US12664438
申请日：2008-06-16
申请人： Filippo Tosato , Stefania Sesia
发明人： Filippo Tosato , Stefania Sesia
IPC分类号： H03M7/00
CPC分类号： H04B7/0663 , H04B7/0417 , H04B7/0639
摘要： The present invention relates to a method for encoding a vector for transmission from a transmitter to a receiver, comprising a step of selecting a first vector in a predefined M-dimensional vector codebook, and at least one refinement step wherein an error vector between the random vector and the first vector is quantised by means of selecting a further vector from a further vector codebook with dimensionality reduced by one relative to the previous step, wherein the M-dimensional vector codebook and the further predefined vector codebook are known to both the transmitter and receiver.
摘要翻译： 本发明涉及一种用于编码从发射机到接收机的传输的矢量的方法，包括选择预定M维向量码本中的第一矢量的步骤和至少一个细化步骤，其中随机 向量，并且通过从相对于前一步骤减小一维的另一向量码本中选择另外的向量来量化第一向量，其中M维向量码本和另外的预定义向量码本对于发射机和 接收器。
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