利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

168 条记录 (耗时 0.029 秒)

    Pseudorandom sequence generation for OFDM cellular systems
    1.
    发明授权
    Pseudorandom sequence generation for OFDM cellular systems 有权
    OFDM蜂窝系统的伪随机序列生成

    公开(公告)号：US08755453B2

    公开(公告)日：2014-06-17

    申请号：US12326878

    申请日：2008-12-02

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

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

    IPC分类号： H04L27/00

    CPC分类号： H04L5/0048 ,  H04B1/04 ,  H04L23/02 ,  H04L25/0202 ,  H04L27/2607 ,  H04L27/2613 ,  H04L27/2649

    摘要： In one embodiment, a transmitter includes a binary sequence generator unit configured to provide a sequence of reference signal bits, wherein the sequence is an inseparable function of a cell identification parameter, a cyclic prefix mode corresponding to the transmitter and one or more time indices of the sequence. The transmitter also include a mapping unit that transforms the sequence of reference signal bits into a complex reference signal, and a transmit unit configured to transmit the complex reference signal. In another embodiment, a receiver includes a receive unit configured to receive a complex reference signal and a reference signal decoder unit configured to detect a sequence of reference signal bits from the complex reference signal, wherein the sequence is an inseparable function of a cell identification parameter, a cyclic prefix mode corresponding to a transmitter and one or more time indices of the sequence.

    摘要翻译： 在一个实施例中，发射机包括被配置为提供参考信号比特序列的二进制序列发生器单元，其中该序列是小区识别参数的不可分离的功能，对应于发射机的循环前缀模式和一个或多个时间指数 序列。 发射机还包括将参考信号比特序列变换为复参考信号的映射单元，以及配置成发送复基准信号的发射单元。 在另一实施例中，接收机包括被配置为接收复参考信号的接收单元和被配置为从复参考信号检测参考信号位序列的参考信号解码器单元，其中该序列是小区识别参数的不可分离的函数 ，对应于发射机的循环前缀模式和序列的一个或多个时间索引。

    Guard subcarrier placement in an OFDM symbol used for synchronization
    2.
    发明授权
    Guard subcarrier placement in an OFDM symbol used for synchronization 有权
    用于同步的OFDM符号中的保护子载波放置

    公开(公告)号：US09565001B2

    公开(公告)日：2017-02-07

    申请号：US12129932

    申请日：2008-05-30

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

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

    IPC分类号： H04L5/00 ,  H04L27/26 ,  H04J11/00

    CPC分类号： H04L5/0048 ,  H04J11/0069 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0053 ,  H04L5/0092 ,  H04L27/2613 ,  H04L27/2626 ,  H04L27/2655 ,  H04L27/2657 ,  H04L27/2675

    摘要： Embodiments of the present disclosure provide a transmitter, a receiver and methods of operating a transmitter and a receiver. In one embodiment, the transmitter is for use with a base station in a cellular communication system and includes a partitioning unit configured to provide first and second groups of guard subcarriers that partition a synchronization portion from data portions in a downlink synchronization signal. The transmitter also includes a transmit unit configured to transmit the downlink synchronization signal. Additionally, the receiver is for use with user equipment in a cellular communication system and includes a receive unit configured to receive a downlink synchronization signal. The receiver also includes a processing unit configured to provide a synchronization portion based on employing first and second groups of guard subcarriers that partition the synchronization portion from data portions of the downlink synchronization signal.

    摘要翻译： 本公开的实施例提供发射机，接收机和操作发射机和接收机的方法。 在一个实施例中，发射机用于蜂窝通信系统中的基站，并且包括分配单元，其被配置为提供在下行链路同步信号中从数据部分划分同步部分的第一组和第二组保护子载波。 发射机还包括被配置为发送下行链路同步信号的发射单元。 此外，接收机用于蜂窝通信系统中的用户设备，并且包括被配置为接收下行链路同步信号的接收单元。 接收机还包括一个处理单元，该处理单元被配置为基于使用从下行链路同步信号的数据部分划分同步部分的第一和第二组保护子载波来提供同步部分。

    GUARD SUBCARRIER PLACEMENT IN AN OFDM SYMBOL USED FOR SYNCHRONIZATION
    3.
    发明申请
    GUARD SUBCARRIER PLACEMENT IN AN OFDM SYMBOL USED FOR SYNCHRONIZATION 有权
    用于同步的OFDM符号中的GUARD SUBCARRIER放置

    公开(公告)号：US20080298326A1

    公开(公告)日：2008-12-04

    申请号：US12129932

    申请日：2008-05-30

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

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

    IPC分类号： H04J3/06

    CPC分类号： H04L5/0048 ,  H04J11/0069 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0053 ,  H04L5/0092 ,  H04L27/2613 ,  H04L27/2626 ,  H04L27/2655 ,  H04L27/2657 ,  H04L27/2675

    摘要： Embodiments of the present disclosure provide a transmitter, a receiver and methods of operating a transmitter and a receiver. In one embodiment, the transmitter is for use with a base station in a cellular communication system and includes a partitioning unit configured to provide first and second groups of guard subcarriers that partition a synchronization portion from data portions in a downlink synchronization signal. The transmitter also includes a transmit unit configured to transmit the downlink synchronization signal. Additionally, the receiver is for use with user equipment in a cellular communication system and includes a receive unit configured to receive a downlink synchronization signal. The receiver also includes a processing unit configured to provide a synchronization portion based on employing first and second groups of guard subcarriers that partition the synchronization portion from data portions of the downlink synchronization signal.

    摘要翻译： 本公开的实施例提供发射机，接收机和操作发射机和接收机的方法。 在一个实施例中，发射机用于蜂窝通信系统中的基站，并且包括分配单元，其被配置为提供在下行链路同步信号中从数据部分划分同步部分的第一组和第二组保护子载波。 发射机还包括被配置为发送下行链路同步信号的发射单元。 此外，接收机用于蜂窝通信系统中的用户设备，并且包括被配置为接收下行链路同步信号的接收单元。 接收机还包括一个处理单元，该处理单元被配置为基于使用从下行链路同步信号的数据部分划分同步部分的第一和第二组保护子载波来提供同步部分。

    Closed loop multiple transmit, multiple receive antenna wireless communication system
    5.
    发明授权
    Closed loop multiple transmit, multiple receive antenna wireless communication system 有权
    闭路多发，多接收天线无线通信系统

    公开(公告)号：US09548801B2

    公开(公告)日：2017-01-17

    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： H03D1/04 ,  H04L27/00 ,  H04L27/14 ,  H04B7/04 ,  H04B7/06 ,  H04L1/00 ,  H04L1/06 ,  H04L25/03 ,  H04B1/7115 ,  H04B7/08

    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）。

    Wireless system with hybrid automatic retransmission request in interference-limited communications
    6.
    发明授权
    Wireless system with hybrid automatic retransmission request in interference-limited communications 有权
    具有混合自动重传请求的无线系统在受干扰有限的通信中

    公开(公告)号：US09094248B2

    公开(公告)日：2015-07-28

    申请号：US11931311

    申请日：2007-10-31

    申请人： Eko N. Onggosanusi ,  Anand G. Dabak ,  Timothy M. Schmidl

    发明人： Eko N. Onggosanusi ,  Anand G. Dabak ,  Timothy M. Schmidl

    IPC分类号： H04B7/02 ,  H04L25/03 ,  H04L1/06 ,  H04L1/18 ,  H04L25/06 ,  H04L1/16 ,  H04L25/02

    CPC分类号： H04L25/03038 ,  H04L1/06 ,  H04L1/16 ,  H04L1/1812 ,  H04L25/0228 ,  H04L25/067 ,  H04L2025/0342 ,  H04L2025/03624 ,  Y10S370/913

    摘要： A wireless receiver for receiving signals from an interference-limited transmitter in an interference-limited system comprising at least one transmit antenna, where the signals comprise a plurality of symbols. The receiver comprises a plurality of receive antennas and collection circuitry for collecting a plurality of signal samples with at least one symbol and with interference effects between different symbols. The receiver also comprises suppression circuitry, for suppressing the interference effects. The receiver also comprises circuitry for receiving signals from the suppression circuitry and for providing estimates of a group of bits. The receiver also comprises error detection circuitry for detecting an error in a packet that comprises the group of bits. Lastly, the receiver also comprises circuitry for requesting the transmitter to transmit a retransmission of a packet in response to detecting the error.

    摘要翻译： 一种无线接收机，用于在受干扰限制的系统中从干扰受限的发射机接收信号，该系统包括至少一个发射天线，其中信号包括多个符号。 接收机包括多个接收天线和收集电路，用于收集具有至少一个符号的多个信号采样并且在不同符号之间具有干扰效应。 接收机还包括用于抑制干扰效应的抑制电路。 接收机还包括用于从抑制电路接收信号并提供一组比特的估计的电路。 接收机还包括用于检测包含该比特组的分组中的错误的错误检测电路。 最后，接收机还包括用于响应于检测到错误而请求发送器发送分组的重传的电路。

    Group based packet scheduling algorithm
    7.
    发明授权
    Group based packet scheduling algorithm 有权
    基于组的分组调度算法

    公开(公告)号：US08379520B2

    公开(公告)日：2013-02-19

    申请号：US10792569

    申请日：2004-03-03

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

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

    IPC分类号： G08C15/00

    CPC分类号： H04W72/121

    摘要： A system comprises a base station, a plurality of mobile stations, and a packet scheduling algorithm that operates on the base station. The packet scheduling algorithm groups the plurality of mobile stations into a plurality of groups based on average throughput with the base station. The packet scheduling algorithm selects one of the plurality of groups for applying a scheduling metric.

    摘要翻译： 一种系统包括基站，多个移动站以及在基站上操作的分组调度算法。 分组调度算法基于与基站的平均吞吐量将多个移动站分组成多个组。 分组调度算法选择多个组中的一个来应用调度度量。

    Code division multiple access wireless system with closed loop mode using ninety degree phase rotation and beamformer verification
    10.
    发明授权
    Code division multiple access wireless system with closed loop mode using ninety degree phase rotation and beamformer verification 有权
    码分多址无线系统采用闭环模式，采用九十度相位旋转和波束形成器验证

    公开(公告)号：US07711034B2

    公开(公告)日：2010-05-04

    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 second 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）以及响应给定时隙中的第一组导频符号的电路（50）。 用户站还包括用于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）以及响应给定时隙中的第二组导频符号的电路（50）。 用户站还包括用于响应于第一信道测量和给定时隙的第二信道测量而在多个时隙中针对每个给定时隙测量相位差值（＆phgr; 2（n））的电路（52） 响应于相对于由紧接在给定时隙之前的解扩电路接收的时隙的给定时隙的九十度旋转。