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171 条记录 (耗时 0.031 秒)

    Finger placement in multi-stage interference cancellation
    2.
    发明授权
    Finger placement in multi-stage interference cancellation 有权
    手指放置在多级干扰消除中

    公开(公告)号：US08787426B2

    公开(公告)日：2014-07-22

    申请号：US13333703

    申请日：2011-12-21

    申请人： Yi-Pin Eric Wang ,  Stephen Grant ,  Ning He ,  Niklas Johansson

    发明人： Yi-Pin Eric Wang ,  Stephen Grant ,  Ning He ,  Niklas Johansson

    IPC分类号： H04B1/00

    CPC分类号： H04B1/7107 ,  H04B1/7115 ,  H04B2201/709727 ,  H04B2201/709745

    摘要： In a receive node of a wireless network, an iterative multi-user multi-stage interference cancellation receiver is used. After each stage of interference cancellation, interference characteristics change. An adaptive finger placement strategy is used in which after each stage of interference cancellation, finger delays and combining weights of the receiver are adapted to reflect the changed interference characteristics.

    摘要翻译： 在无线网络的接收节点中，使用迭代多用户多级干扰消除接收机。 在干扰消除的每个阶段之后，干扰特性发生变化。 使用自适应手指放置策略，其中在干扰消除的每个阶段之后，接收机的手指延迟和组合权重适于反映改变的干扰特性。

    Multi-stage turbo equalization and interference cancellation receiver for wireless systems
    3.
    发明授权
    Multi-stage turbo equalization and interference cancellation receiver for wireless systems 有权
    用于无线系统的多级turbo均衡和干扰消除接收机

    公开(公告)号：US08681835B2

    公开(公告)日：2014-03-25

    申请号：US13402297

    申请日：2012-02-22

    申请人： Yi-Pin Eric Wang ,  Stephen Grant ,  Ning He ,  Niklas Johansson ,  Michael Samuel Bebawy

    发明人： Yi-Pin Eric Wang ,  Stephen Grant ,  Ning He ,  Niklas Johansson ,  Michael Samuel Bebawy

    IPC分类号： H04B1/00

    CPC分类号： H04W72/1278 ,  H04B1/71075 ,  H04B1/712 ,  H04W72/082

    摘要： In a receive node of a wireless network, an iterative multi-user multi-stage interference cancellation receiver is used. The receiver performs code-averaged equalization and chip chip-level code-specific interference over-cancellation on the received signals. This can result in a unified interference cancellation processing, and can avoid cumbersome calculations of code cross correlations that is required in symbol-level interference cancellation. A symbol-level code-averaged desired signal add-back is performed to address the over-cancellation of some desired signals.

    摘要翻译： 在无线网络的接收节点中，使用迭代多用户多级干扰消除接收机。 接收机对接收到的信号执行代码平均均衡和芯片级代码特定的干扰过度消除。 这可以导致统一的干扰消除处理，并且可以避免在符号级干扰消除中所需的代码互相关的繁琐计算。 执行符号级代码平均期望信号加法来解决某些期望信号的过度消除。

    FREQUENCY OFFSET CORRECTION IN NARROWBAND MACHINE-TO-MACHINE
    5.
    发明申请
    FREQUENCY OFFSET CORRECTION IN NARROWBAND MACHINE-TO-MACHINE 审中-公开

    公开(公告)号：US20200177360A1

    公开(公告)日：2020-06-04

    申请号：US16697294

    申请日：2019-11-27

    申请人： Ansuman Adhikary ,  Niklas Johansson ,  Yi-Pin Eric Wang

    发明人： Ansuman Adhikary ,  Niklas Johansson ,  Yi-Pin Eric Wang

    IPC分类号： H04L7/00 ,  H04W4/70 ,  H04L27/26 ,  H04L27/00 ,  H04W4/06

    摘要： A method in a node is disclosed. The method comprises receiving a signal, and obtaining a first oversampled received signal by sampling the received signal according to a symbol rate. The method further comprises estimating a first frequency offset based on the first oversampled received signal, the first frequency offset estimated using an estimation range limited to one of a bandwidth of the received signal or the symbol rate of the received signal, and obtaining a second oversampled received signal by sampling the received signal according to N times the symbol rate, wherein N is greater than 1. The method further comprises estimating a true frequency offset based on the first frequency offset estimate and the second oversampled received signal.

    Management of uplink resources in multi-carrier CDMA system
    6.
    发明授权
    Management of uplink resources in multi-carrier CDMA system 有权
    多载波CDMA系统上行资源管理

    公开(公告)号：US09253783B2

    公开(公告)日：2016-02-02

    申请号：US13403683

    申请日：2012-02-23

    申请人： Yi-Pin Eric Wang ,  Anders Wallén ,  Stephen Grant

    发明人： Yi-Pin Eric Wang ,  Anders Wallén ,  Stephen Grant

    IPC分类号： H04W72/04

    CPC分类号： H04W72/0486 ,  H04W72/0453

    摘要： The method an apparatus described herein manages uplink resources to increase spectral efficiency and system capacity. According to one embodiment of the present invention, a base station may be assigned two or more downlink carriers for downlink transmission and two or more corresponding uplink carriers. In a multi-carrier mode, the base station may transmit signals on two or more downlink carriers to the same mobile terminal, and receive signals from the mobile terminal on one of the paired uplink terminals. The uplink carriers can be operated at different interference levels and the uplink traffic can be divided between the available uplink carriers based on the type of traffic and/or data transmission parameters. The mobile terminals may also be allowed to switch between the uplink carriers to improve overall efficiency.

    摘要翻译： 本文描述的装置的方法管理上行链路资源以提高频谱效率和系统容量。 根据本发明的一个实施例，可以为基站分配用于下行链路传输的两个或更多个下行链路载波和两个或更多个对应的上行链路载波。 在多载波模式中，基站可以在两个或多个下行链路载波上发送信号到同一个移动终端，并且在一个上行链路终端中的一个上接收来自移动终端的信号。 上行链路载波可以以不同的干扰级别操作，并且可以基于业务类型和/或数据传输参数在可用的上行链路载波之间划分上行链路业务。 还可以允许移动终端在上行链路载波之间切换以提高整体效率。

    Chip-Level Processing for Joint Demodulation in CDMA Receivers
    7.
    发明申请
    Chip-Level Processing for Joint Demodulation in CDMA Receivers 有权
    CDMA接收机联合解调的​​芯片级处理

    公开(公告)号：US20130301686A1

    公开(公告)日：2013-11-14

    申请号：US13468680

    申请日：2012-05-10

    申请人： Andres Reial ,  Stephen Grant ,  Michael Samuel Bebawy ,  Yi-Pin Eric Wang

    发明人： Andres Reial ,  Stephen Grant ,  Michael Samuel Bebawy ,  Yi-Pin Eric Wang

    IPC分类号： H04B1/7105

    CPC分类号： H04B1/7105 ,  H04B1/7097 ,  H04B1/71052 ,  H04B1/71057 ,  H04L25/03331

    摘要： A CDMA multi-code joint demodulation solution in which impairment suppression and channel matching operations are performed prior to despreading. Embodiments include a linear front end that performs chip-level suppression of signal components that are not included in a subsequent joint demodulation process. The pre-processing stage also carries out metric preparation and provides a vector decision statistic that is processed by a joint demodulation stage to extract per-code soft values for the symbols of interest in the received signal. Both code-specific and code-averaged versions of the linear processing are disclosed, as are several front-end configurations with equivalent performance, but different complexity trade-offs. These new approaches use a block formulation, requiring a set of input chip samples as an input, and perform all operations as matrix-vector multiplications, which is an approach amenable to efficient DSP or hardware implementation.

    摘要翻译： 一种CDMA解码解码方案，其中在解扩之前执行损伤抑制和信道匹配操作。 实施例包括执行不包括在随后的联合解调处理中的信号分量的芯片级抑制的线性前端。 预处理阶段还执行度量准备，并提供由联合解调级处理以提取接收信号中感兴趣符号的每码软值的向量决策统计量。 公开了线性处理的代码特定和代码平均版本，以及具有相同性能但是不同复杂性权衡的若干前端配置。 这些新方法使用块公式，需要一组输入芯片样本作为输入，并执行所有操作作为矩阵向量乘法，这是一种适合高效DSP或硬件实现的方法。

    MANAGEMENT OF UPLINK RESOURCES IN MULTI-CARRIER CDMA SYSTEM
    9.
    发明申请
    MANAGEMENT OF UPLINK RESOURCES IN MULTI-CARRIER CDMA SYSTEM 有权
    多载波CDMA系统中的上行资源管理

    公开(公告)号：US20120155435A1

    公开(公告)日：2012-06-21

    申请号：US13403683

    申请日：2012-02-23

    申请人： Yi-Pin Eric Wang ,  Anders Wallén ,  Stephen Grant

    发明人： Yi-Pin Eric Wang ,  Anders Wallén ,  Stephen Grant

    IPC分类号： H04W72/04 ,  H04J3/02 ,  H04B7/216

    CPC分类号： H04W72/0486 ,  H04W72/0453

    摘要： The method an apparatus described herein manages uplink resources to increase spectral efficiency and system capacity. According to one embodiment of the present invention, a base station may be assigned two or more downlink carriers for downlink transmission and two or more corresponding uplink carriers. In a multi-carrier mode, the base station may transmit signals on two or more downlink carriers to the same mobile terminal, and receive signals from the mobile terminal on one of the paired uplink terminals. The uplink carriers can be operated at different interference levels and the uplink traffic can be divided between the available uplink carriers based on the type of traffic and/or data transmission parameters. The mobile terminals may also be allowed to switch between the uplink carriers to improve overall efficiency.

    摘要翻译： 本文描述的方法和装置管理上行链路资源以提高频谱效率和系统容量。 根据本发明的一个实施例，可以为基站分配用于下行链路传输的两个或更多个下行链路载波和两个或更多个对应的上行链路载波。 在多载波模式中，基站可以在两个或多个下行链路载波上发送信号到同一个移动终端，并且在一个上行链路终端中的一个上接收来自移动终端的信号。 上行链路载波可以以不同的干扰级别操作，并且可以基于业务类型和/或数据传输参数在可用的上行链路载波之间划分上行链路业务。 还可以允许移动终端在上行链路载波之间切换以提高整体效率。

    CONTROL SIGNAL AGGREGATION IN A MULTI-CARRIER WCDMA SYSTEM
    10.
    发明申请
    CONTROL SIGNAL AGGREGATION IN A MULTI-CARRIER WCDMA SYSTEM 有权
    多载波WCDMA系统中的信号聚合控制

    公开(公告)号：US20110110337A1

    公开(公告)日：2011-05-12

    申请号：US12614526

    申请日：2009-11-09

    申请人： Stephen Grant ,  Anders Wallén ,  Yi-Pin Eric Wang

    发明人： Stephen Grant ,  Anders Wallén ,  Yi-Pin Eric Wang

    IPC分类号： H04W72/04

    CPC分类号： H04W72/0406 ,  H04B1/707 ,  H04L1/001 ,  H04L1/0027 ,  H04L1/0029 ,  H04L5/001 ,  H04L5/0016 ,  H04L5/0053 ,  H04L5/0055 ,  H04L5/06

    摘要： Methods and apparatus are disclosed for transmitting data to a remote node via each of two or more transmitted carrier signals, wherein a distinct outbound packet data traffic channel is mapped to each transmitted carrier signal. In an exemplary method, aggregated control channel data is formed by combining control channel data corresponding to each of two or more received carrier signals, simultaneously transmitting traffic channel data to the remote node on each of the two or more outbound packet data traffic channels, and transmitting the aggregated control channel data using one or more physical control channels mapped to a first one of the transmitted carrier signals. In particular, these methods and apparatus may be applied to a multi-carrier High-Speed Packet Access (HSPA) system.

    摘要翻译： 公开了用于经由两个或更多个发送的载波信号中的每一个将数据发送到远程节点的方法和装置，其中将不同的出站分组数据业务信道映射到每个发送的载波信号。 在一种示例性方法中，通过组合对应于两个或多个接收到的载波信号中的每一个的控制信道数据来形成聚合控制信道数据，同时在两个或更多个出站分组数据业务信道中的每一个上向远程节点发送业务信道数据，以及 使用映射到所发送的载波信号中的第一个的一个或多个物理控制信道来发送所述聚合的控制信道数据。 特别地，这些方法和装置可以应用于多载波高速分组接入（HSPA）系统。