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    Wireless precoding methods
    53.
    发明授权
    Wireless precoding methods 有权
    无线预编码方法

    公开(公告)号：US08693575B2

    公开(公告)日：2014-04-08

    申请号：US13237543

    申请日：2011-09-20

    申请人： Anand G. Dabak ,  Eko N. Onggosanusi

    发明人： Anand G. Dabak ,  Eko N. Onggosanusi

    IPC分类号： H04L27/36

    CPC分类号： H04B7/0456 ,  H04B7/0417 ,  H04B7/0619 ,  H04L5/023 ,  H04L25/0206 ,  H04L27/2608

    摘要： Various wireless precoding systems and methods are presented. In some embodiments, a wireless transmitter comprises an antenna precoding block, a transform block, and multiple transmit antennas. The antenna precoding block receives frequency coefficients from multiple data streams and distributes the frequency coefficients across multiple transmit signals in accordance with frequency-dependent matrices. The transform block transforms the precoded frequency coefficients into multiple time domain transmit signals to be transmitted by the multiple antennas. The frequency coefficients from multiple data streams may be partitioned into tone groups, and all the frequency coefficients from a given tone group may be redistributed in accordance with a single matrix for that tone group. In some implementations, the frequency coefficients within a tone group for a given data stream may also be precoded. In some alternative embodiments, tone group precoding may be employed in a single channel system.

    摘要翻译： 提出了各种无线预编码系统和方法。 在一些实施例中，无线发射机包括天线预编码块，变换块和多个发射天线。 天线预编码块从多个数据流接收频率系数，并根据频率依赖矩阵在多个发射信号之间分配频率系数。 变换块将预编码的频率系数转换成由多个天线发射的多个时域发射信号。 来自多个数据流的频率系数可以被划分为音调组，并且来自给定音调组的所有频率系数可以根据该音调组的单个矩阵重新分配。 在一些实现中，给定数据流的音调组内的频率系数也可以被预编码。 在一些替代实施例中，音调组预编码可以用于单个信道系统中。

    CLOSED LOOP MULTIPLE TRANSMIT, MULTIPLE RECEIVE ANTENNA WIRELESS COMMUNICATION SYSTEM
    54.
    发明申请
    CLOSED LOOP MULTIPLE TRANSMIT, MULTIPLE RECEIVE ANTENNA WIRELESS COMMUNICATION SYSTEM 审中-公开
    闭环多功能发射，多天线天线无线通信系统

    公开(公告)号：US20130010845A1

    公开(公告)日：2013-01-10

    申请号：US13614991

    申请日：2012-09-13

    申请人： Eko N. Onggosanusi ,  Anand G. Dabak

    发明人： Eko N. Onggosanusi ,  Anand G. Dabak

    IPC分类号： H04B1/40

    CPC分类号： H04B7/0417 ,  H04B1/7115 ,  H04B7/0634 ,  H04B7/082 ,  H04B7/0854 ,  H04B2201/70702 ,  H04L1/0001 ,  H04L1/0025 ,  H04L1/0029 ,  H04L1/0675 ,  H04L25/03343 ,  H04L2025/03375

    摘要： A wireless receiver (74) for receiving signals from a transmitter (72). The transmitter comprises a plurality of transmit antennas (TAT1′, TAT2′) for transmitting the signals, which comprise respective independent streams of symbols. Additionally, interference occurs between the respective streams. The receiver comprises a plurality of receive antennas (RAT1′, RAT2′) for receiving the signals as influenced by a channel effect between the receiver and the transmitter. The receiver also comprises circuitry (80) for multiplying the signals times a conjugate transpose of an estimate of the channel effect and times a conjugate transpose of a linear basis transformation matrix. The receiver also comprises circuitry (84) for selecting the linear basis transformation matrix from a finite set of linear basis transformation matrices. Lastly, the receiver comprises circuitry (88) for removing the interference between the respective streams.

    摘要翻译： 一种用于从发射机（72）接收信号的无线接收机（74）。 发射机包括用于发送信号的多个发射天线（TAT1'，TAT2'），其包括相应的独立的符号流。 另外，在各个流之间发生干扰。 接收机包括多个接收天线（RAT1'，RAT2'），用于接收由接收机和发射机之间的信道效应影响的信号。 接收机还包括用于将信号乘以信道效应的估计的共轭转置乘以线性基变换矩阵的共轭转置次数的电路（80）。 接收机还包括用于从有限线性基变换矩阵组中选择线性基变换矩阵的电路（84）。 最后，接收机包括用于消除各个流之间的干扰的电路（88）。

    Downlink synchronization channel and methods for cellular systems
    55.
    发明授权
    Downlink synchronization channel and methods for cellular systems 有权
    下行链路同步信道和蜂窝系统的方法

    公开(公告)号：US08031745B2

    公开(公告)日：2011-10-04

    申请号：US11737554

    申请日：2007-04-19

    申请人： Eko N. Onggosanusi ,  Anand G. Dabak ,  Badri N. Varadarajan

    发明人： Eko N. Onggosanusi ,  Anand G. Dabak ,  Badri N. Varadarajan

    IPC分类号： H04J3/06

    CPC分类号： H04W56/0005 ,  H04J11/0069

    摘要： The present invention provides a method of operating a base station transmitter. The method includes providing a cellular downlink synchronization signal having primary and secondary portions, wherein the primary portion employs a corresponding one of a plurality of different primary signals allocated to adjoining transmission cells. The method also includes further providing cell-specific information in the secondary portion and transmitting the cellular downlink synchronization signal. In one embodiment, the primary portion explicitly indicates a partial cell identification information and the remaining cell identification information is carried in the secondary portion. In another embodiment, the plurality of different primary signals are simply used to avoid the channel mismatch effect. The present invention also provides a method of operating user equipment. The method includes receiving a cellular downlink synchronization signal having primary and secondary portions wherein the timing acquisition is performed in conjunction with the primary synchronization sequence index detection via the primary portion. In addition, the secondary portion provides cell-specific parameters and identifying and extracting the secondary portion.

    摘要翻译： 本发明提供一种操作基站发射机的方法。 该方法包括提供具有主要和次要部分的蜂窝下行链路同步信号，其中主要部分采用分配给相邻传输小区的多个不同主要信号中的相应一个信号。 该方法还包括在次级部分中进一步提供小区特定信息并发送蜂窝下行同步信号。 在一个实施例中，主要部分明确地指示部分小区标识信息，并且剩余小区标识信息在次要部分中携带。 在另一个实施例中，简单地使用多个不同的主信号来避免信道失配效应。 本发明还提供了一种操作用户设备的方法。 该方法包括接收具有主要和次要部分的蜂窝下行链路同步信号，其中定时获取结合经由主要部分的主同步序列索引检测来执行。 此外，次级部分提供细胞特异性参数并识别和提取次级部分。

    DEDICATED REFERENCE SIGNAL STRUCTURES FOR SPATIAL MULTIPLEXING BEAMFORMING
    58.
    发明申请
    DEDICATED REFERENCE SIGNAL STRUCTURES FOR SPATIAL MULTIPLEXING BEAMFORMING 审中-公开
    用于空间多路复用光束的专用参考信号结构

    公开(公告)号：US20100061360A1

    公开(公告)日：2010-03-11

    申请号：US12557398

    申请日：2009-09-10

    申请人： Runhua Chen ,  Anand G. Dabak ,  Eko N. Onggosanusi ,  Badri Varadarajan

    发明人： Runhua Chen ,  Anand G. Dabak ,  Eko N. Onggosanusi ,  Badri Varadarajan

    IPC分类号： H04L25/49 ,  H04B7/216 ,  H04J1/00 ,  H04J3/00 ,  H04B1/10

    CPC分类号： H04L5/0023 ,  H04L5/0051 ,  H04L25/0226

    摘要： A transmitter is for use with a cellular communication network and includes a beamforming generation unit configured to generate a downlink beamforming transmission corresponding to multiple-layer spatial multiplexing and based on a dedicated reference signal pattern. Additionally, the transmitter also includes a transmit unit configured to transmit the downlink beamforming transmission. A receiver is for use with a cellular communication network and includes a receive unit configured to receive a downlink beamforming transmission, and a beamforming processing unit configured to process the downlink beamforming transmission corresponding to multiple-layer spatial multiplexing and based on a dedicated reference signal pattern.

    摘要翻译： 发射机用于蜂窝通信网络，并且包括：波束成形生成单元，被配置为生成对应于多层空间复用的下行链路波束形成传输，并且基于专用参考信号模式。 另外，发射机还包括被配置为发送下行链路波束成形传输的发射单元。 接收机用于蜂窝通信网络并且包括被配置为接收下行链路波束成形传输的接收单元，以及波束形成处理单元，被配置为处理与多层空间复用相对应的下行链路波束成形传输，并且基于专用参考信号模式 。

    REFERENCE SIGNAL STRUCTURES FOR MORE THAN FOUR ANTENNAS
    59.
    发明申请
    REFERENCE SIGNAL STRUCTURES FOR MORE THAN FOUR ANTENNAS 审中-公开
    参考信号结构超过四个天线

    公开(公告)号：US20100046412A1

    公开(公告)日：2010-02-25

    申请号：US12546615

    申请日：2009-08-24

    申请人： Badri Varadarajan ,  Eko N. Onggosanusi ,  Anand G. Dabak ,  Runhua Chen

    发明人： Badri Varadarajan ,  Eko N. Onggosanusi ,  Anand G. Dabak ,  Runhua Chen

    IPC分类号： H04H20/71 ,  H04M3/00 ,  H04B7/02

    CPC分类号： H04L5/003 ,  H04L5/0007 ,  H04L25/0224 ,  H04W48/08

    摘要： A transmitter, for use with a cellular communication network, includes a reference signal generation unit configured to provide a reference signal corresponding to a reference signal structure for more than four transmit antennas. The transmitter also includes a system information signal generation unit configured to provide a system information signal corresponding to the reference signal structure for the more than four transmit antennas. The transmitter additionally includes a transmit unit configured to transmit the reference signal and the system information signal.

    摘要翻译： 用于蜂窝通信网络的发射机包括参考信号生成单元，被配置为提供对应于多于四个发射天线的参考信号结构的参考信号。 发射机还包括系统信息信号生成单元，被配置为提供与多于四个发射天线的参考信号结构相对应的系统信息信号。 发射机还包括被配置为发送参考信号和系统信息信号的发射单元。

    Code Division Multiple Access Wireless System With Closed Loop Mode Using Ninety Degree Phase Rotation And Beamformer Verification
    60.
    发明申请
    Code Division Multiple Access Wireless System With Closed Loop Mode Using Ninety Degree Phase Rotation And Beamformer Verification 有权
    使用九十度相位旋转和波束形成器验证的闭环模式的码分多址无线系统

    公开(公告)号：US20090103590A1

    公开(公告)日：2009-04-23

    申请号：US12331279

    申请日：2008-12-09

    申请人： Anand G. Dabak ,  Eko N. Onggosanusi

    发明人： Anand G. Dabak ,  Eko N. Onggosanusi

    IPC分类号： H04B1/69

    CPC分类号： H04B7/0615 ,  H04B7/0617 ,  H04B7/0634 ,  H04B7/0645 ,  H04B7/0654 ,  H04B7/0857 ,  H04B17/104 ,  H04B17/24

    摘要： A wireless communication system (10). The system comprises a user station (12). The user station comprises despreading circuitry (22) for receiving and despreading a plurality of slots received from at least a first transmit antenna (A121) and a second transmit antenna (A122) at a transmitting station (14). Each of the plurality of slots comprises a first channel (DPCH) comprising a first set of pilot symbols and a second channel (PCCPCH) comprising a second set of pilot symbols. The user station further comprises circuitry (50) for measuring a first channel measurement (α1,n) for each given slot in the plurality of slots from the first transmit antenna and in response to the first set of pilot symbols in the given slot. The user station further comprises circuitry (50) for measuring a second channel measurement (α2,n) for each given slot in the plurality of slots from the second transmit antenna and in response to the first set of pilot symbols in the given slot. The user station further comprises circuitry (52) for measuring a phase difference value (φ2(n)) for each given slot in the plurality of slots in response to the first channel measurement and the second channel measurement for the given slot and in response to a ninety degree rotation of the given slot relative to a slot which was received by the despreading circuitry immediately preceding the given slot.

    摘要翻译： 一种无线通信系统（10）。 该系统包括用户站（12）。 用户站包括解扩电路（22），用于在发射站（14）处接收和解扩从至少第一发射天线（A121）和第二发射天线（A122）接收的多个时隙。 多个时隙中的每一个包括包括第一组导频符号的第一信道（DPCH）和包括第二组导频符号的第二信道（PCCPCH）。 用户站还包括用于测量来自第一发射天线的多个时隙中的每个给定时隙的第一信道测量（α1，n）以及响应于给定时隙中的第一组导频符号的电路（50）。 用户站还包括电路（50），用于响应于给定时隙中的第一组导频符号，测量来自第二发射天线的多个时隙中的每个给定时隙的第二信道测量（α2，n）。 用户站还包括电路（52），用于响应于给定时隙的第一信道测量和第二信道测量以及响应于第二信道测量而测量多个时隙中的每个给定时隙的相位差值（phi2（n））， 给定时隙相对于由紧接在给定时隙之前的解扩电路接收的时隙的九十度旋转。