公开(公告)号：US20150117391A1

公开(公告)日：2015-04-30

申请号：US14068607

申请日：2013-10-31

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Fredrik Rusek ,  Basuki Endah Priyanto ,  Sha Hu ,  Gengshi Wu ,  Shashi Kant

IPC: H04W28/04 ,  H04W72/08

CPC classification number: H04B7/0837 ,  H04B7/0413 ,  H04L25/03171 ,  H04L25/0328 ,  H04L25/03821 ,  H04L25/03968 ,  H04L27/2691 ,  H04W28/04

Abstract: The present invention relates to an equalizing method in a receiver node of a cellular wireless communication system, the method comprising: receiving at least one radio signal comprising a plurality of resource elements; obtaining interference information associated with the plurality of resource elements; extracting resource elements from the plurality of resource elements carrying data into a first set based on the interference information; dividing the resource elements in the first set into one or more sub-sets each comprising T number of resource elements; filtering the resource elements in said one or more sub-sets by applying a balanced whitening and energy focusing filter W so as to obtain filtered resource elements y; and equalizing the filtered resource elements y. The invention also relates to a receive device, a computer program, and a computer program product.

Abstract translation: 本发明涉及蜂窝无线通信系统的接收机节点中的均衡方法，所述方法包括：接收包括多个资源元素的至少一个无线电信号; 获得与所述多个资源元素相关联的干扰信息; 基于所述干扰信息，从携带数据的所述多个资源元素提取资源元素到第一集合; 将第一组中的资源元素划分成每个包括T个资源元素的一个或多个子集; 通过应用平衡白化和能量聚焦滤波器W对所述一个或多个子集中的资源元素进行滤波，以获得滤波后的资源元素y; 并均衡经过过滤的资源元素y。 本发明还涉及接收设备，计算机程序和计算机程序产品。

公开(公告)号：US20140369300A1

公开(公告)日：2014-12-18

申请号：US14459464

申请日：2014-08-14

Applicant: Huawei Technologies Co., Ltd.

Inventor： Sha Hu ,  Gengshi Wu ,  Basuki Endah Priyanto ,  Fredrik Rusek ,  Shashi Kant ,  Jianjun Chen

IPC: H04B7/005 ,  H04W72/04

CPC classification number: H04B7/005 ,  H04J11/004 ,  H04J11/0046 ,  H04J11/005 ,  H04L25/03305 ,  H04L25/03318 ,  H04W72/0406

Abstract: The present disclosure relates to an iterative pilot symbol interference cancellation method in a receiver node of a cellular wireless communication system. The method includes receiving a superimposed signal comprising pilot symbols and data symbols associated with a serving cell and pilot symbols associated with one or more interfering cells, extracting a first set from the superimposed signal. The first set includes a plurality of data symbols associated with said serving cell which are affected by an interference from the one or more interfering cells. The method further includes estimating an interference of the first set, removing interference from the first set using the estimated interference, estimating the plurality of data symbols, subtracting the estimated plurality of data symbols from the first set, and repeating the estimating an interference, the removing interference, the estimating plurality of data symbols, and the subtracting steps i number of times, where i≧1.

Abstract translation: 本公开涉及蜂窝无线通信系统的接收机节点中的迭代导频符号干扰消除方法。 该方法包括：接收叠加的信号，该叠加信号包括与服务小区相关联的导频符号和数据符号以及与一个或多个干扰小区相关联的导频符号，从叠加信号中提取第一组。 第一组包括与由所述一个或多个干扰小区的干扰影响的与所述服务小区相关联的多个数据符号。 该方法还包括估计第一组的干扰，使用估计的干扰去除来自第一组的干扰，估计多个数据符号，从第一组中减去估计的多个数据符号，并重复估计干扰， 去除干扰，估计多个数据符号和减法步骤i次数，其中i≥1。

公开(公告)号：US20140341320A1

公开(公告)日：2014-11-20

申请号：US14272870

申请日：2014-05-08

Applicant: Huawei Technologies Co., Ltd.

Inventor： Meng Hua ,  Zongjie Wang ,  Carmela Cozzo ,  Xiaolei Tie ,  Shurong Jiao ,  Shuju Fan ,  Gengshi Wu

IPC: H04L1/00 ,  H04B7/04

CPC classification number: H04B1/7097 ,  H04B7/0413 ,  H04B7/0417 ,  H04B2201/709709 ,  H04L1/0026 ,  H04L1/0029 ,  H04L1/0071 ,  H04L1/06

Abstract: A method for transmitting data streams in a multiple input multiple output (MIMO) system is provided, where each data stream is mapped to multiple layers in an MIMO channel space for transmission, and the method includes: performing inter-layer interleaving for N data streams to obtain N interleaved data streams; mapping the N interleaved data streams respectively to N layers in the MIMO channel space, and transmitting the N interleaved data streams that are mapped to the N layers. By using the method of the present invention, a combined CQI can be used in a better way to improve MIMO transmission performance. Further, an impact of inter-layer interference is canceled by using an interference cancellation technology (for example, an SIC technology) based on the inter-layer interleaving.

Abstract translation: 提供一种在多输入多输出（MIMO）系统中传输数据流的方法，其中每个数据流被映射到MIMO信道空间中的多个层以用于传输，并且该方法包括：对N个数据流进行层间交织 获得N个交错数据流; 将N个交错数据流分别映射到MIMO信道空间中的N个层，以及发送映射到N个层的N个交织数据流。 通过使用本发明的方法，可以以更好的方式使用组合的CQI来改善MIMO传输性能。 此外，通过使用基于层间交织的干扰消除技术（例如，SIC技术）来消除层间干扰的影响。

公开(公告)号：US08885765B2

公开(公告)日：2014-11-11

申请号：US13775521

申请日：2013-02-25

Applicant: Huawei Technologies Co., Ltd.

Inventor： Qiang Zhang ,  Dongsheng Liu ,  Gengshi Wu ,  Jing Yang ,  Yukuang Hu

IPC: H04K1/02 ,  H04L25/03 ,  H04L25/49 ,  H04L27/36

CPC classification number: H04L27/367 ,  H04L25/03343

Abstract: Embodiments of the present invention provide a digital predistortion processing method and a user terminal, which relate to the field of communications, and can simplify the structure of a digital predistortion apparatus and reduce the cost. The method includes: setting a control command; and tuning, when the control command is selecting a data collection mode as the working mode of a receive channel, the frequency of a local oscillator and the central frequency of a band-pass filter in the receive channel to the transmitting frequency of the user terminal, so that the user terminal performs predistortion factor update. The embodiments of the present invention are applied to the user terminal for digital predistortion processing.

Abstract translation: 本发明的实施例提供了与通信领域有关的数字预失真处理方法和用户终端，并且可以简化数字预失真装置的结构并降低成本。 该方法包括：设置控制命令; 并且当控制命令正在选择数据收集模式作为接收信道的工作模式时，本地振荡器的频率和接收信道中的带通滤波器的中心频率与用户终端的发送频率的调谐 ，使得用户终端执行预失真因子更新。 本发明的实施例应用于用于数字预失真处理的用户终端。

公开(公告)号：US08824525B2

公开(公告)日：2014-09-02

申请号：US13714099

申请日：2012-12-13

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zhiqun Chen ,  Gengshi Wu ,  Feng Li ,  Xiuqin Peng

IPC: H04B1/00 ,  H04L25/02 ,  H04B1/7115 ,  H04B1/7113

CPC classification number: H04L25/02 ,  H04B1/7113 ,  H04B1/7115 ,  H04L25/0212

Abstract: Embodiments of the present invention provide a multipath searching method and a multipath searcher, to improve accuracy of delay estimation, thereby improving performance of a receiver. The method includes: performing processing on received signals ri(t) and pilot sequences pi(t) to obtain upsampling signals y(τ); subtracting contribution values of a current multipath waveform to other multipath waveforms by using a raised cosine function with a peak position set to zero and according to a global maximum value of |y(τ)|2 and a total of M sampling points {circumflex over (τ)}1(m) near the global maximum value, to obtain an upsampling signal yL(τ) having a minimum residual in M groups of upsampling signals yL(m)(τ); and obtaining a time delay power spectrum of the upsampling signal yL(τ) having the minimum residual.

Abstract translation: 本发明的实施例提供一种多路径搜索方法和多路径搜索器，以提高延迟估计的精度，从而提高接收机的性能。 该方法包括：对接收信号ri（t）和导频序列pi（t）执行处理以获得上采样信号y（τ）; 通过使用峰值位置设置为零并根据全局最大值| y（τ）| 2的累加余弦函数和总共M个采样点（回旋过程），将当前多径波形的贡献值减去其他多径波形 （τ）} 1（m），以获得具有最小残差的上采样信号yL（m）（τ）的上采样信号yL（τ）; 并获得具有最小残差的上采样信号yL（τ）的时间延迟功率谱。