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15 条记录 (耗时 0.018 秒)

    Weight prediction for closed-loop mode transmit diversity
    1.
    发明授权
    Weight prediction for closed-loop mode transmit diversity 有权
    闭环模式发射分集的权重预测

    公开(公告)号：US07155177B2

    公开(公告)日：2006-12-26

    申请号：US10364638

    申请日：2003-02-10

    申请人： Jittra Jootar ,  Da-shan Shiu ,  Parvathanathan Subrahmanya

    发明人： Jittra Jootar ,  Da-shan Shiu ,  Parvathanathan Subrahmanya

    IPC分类号： H04B1/02 ,  H04B17/00 ,  H04B1/10

    CPC分类号： H04B7/0634

    摘要： Techniques for predicting weights used for closed-loop transmit diversity. In a channel prediction scheme, channel gains for multiple transmit antennas are initially estimated (e.g., based on pilots received from these antennas) and used to derive predicted channel gains for a future time instant. The predicted channel gains are then used to derive predicted weights that are deemed to be “optimal” at the future time instant. Optimality may be determined based on one or more criteria, such as maximizing a received SNR for the received signals. In a weight prediction scheme, the channel gains for the multiple antennas are estimated and used to compute optimal weights for the current time instant. The current optimal weights are then used to predict the optimal weights at the future time instant. For both schemes, the prediction may be performed based on an adaptive filter (e.g., LMS or RLS filter) or a non-adaptive filter.

    摘要翻译： 用于预测用于闭环发射分集的权重的技术。 在信道预测方案中，最初估计多个发射天线的信道增益（例如，基于从这些天线接收的导频），并用于在未来时刻导出预测的信道增益。 然后，预测的信道增益用于导出在未来时刻被认为是“最佳”的预测权重。 可以基于一个或多个准则来确定最优性，例如为接收到的信号最大化接收到的SNR。 在权重预测方案中，估计多个天线的信道增益并用于计算当前时刻的最优权重。 然后使用当前的最优权重来预测未来时刻的最优权重。 对于这两种方案，可以基于自适应滤波器（例如，LMS或RLS滤波器）或非自适应滤波器来执行预测。

    Method and apparatus for improved cell acquisition with reduced frequency error impact
    4.
    发明授权
    Method and apparatus for improved cell acquisition with reduced frequency error impact 失效
    用于改善细胞获取的方法和装置，降低频率误差影响

    公开(公告)号：US08687604B2

    公开(公告)日：2014-04-01

    申请号：US12404203

    申请日：2009-03-13

    申请人： An-Swol Clement Hu ,  Jittra Jootar ,  Parvathanathan Subrahmanya

    发明人： An-Swol Clement Hu ,  Jittra Jootar ,  Parvathanathan Subrahmanya

    IPC分类号： H04J3/00

    CPC分类号： H04B1/7083 ,  H04B1/70735

    摘要： A method and apparatus for improved initial cell acquisition with reduced frequency error impact. The method determines the slot timing of a transmission, identifies the primary scrambling code and frame timing using the common pilot channel, and provides a path profile using a pseudorandom noise (PN) search. An apparatus using a cell searcher that performs the method is also described.

    摘要翻译： 一种用于改善初始细胞获取并减少频率误差影响的方法和装置。 该方法确定传输的时隙定时，使用公共导频信道识别主扰码和帧定时，并且使用伪随机噪声（PN）搜索来提供路径简档。 还描述了使用执行该方法的小区搜索器的装置。

    Closed loop transmit diversity antenna verification using trellis decoding
    6.
    发明授权
    Closed loop transmit diversity antenna verification using trellis decoding 失效
    使用网格解码的闭环发射分集天线验证

    公开(公告)号：US07035343B2

    公开(公告)日：2006-04-25

    申请号：US10061877

    申请日：2002-01-31

    申请人： Richard Chi ,  Jittra Jootar ,  Parvathanathan Subrahmanya

    发明人： Richard Chi ,  Jittra Jootar ,  Parvathanathan Subrahmanya

    IPC分类号： H04L5/12

    CPC分类号： H04L1/0054 ,  H04B7/0634 ,  H04B7/0654 ,  H04L1/0055 ,  H04L1/06

    摘要： A trellis decoder determines the most likely transmitted phase in response to previously requested phase adjustments and observed transmitted symbols. Maximum a posteriori (MAP) decoding also may be used. Alternatively, the identified likely transmitted phase is used for data demodulation. This and related features have the benefit of decreasing the effect of phase discrepancies introduced by erroneous reception of phase adjustment information, resulting in improved error rates, and a corresponding increase in system capacity, data throughput, or both.

    摘要翻译： 网格解码器响应于先前请求的相位调整和观察到的发送符号来确定最可能的传输阶段。 也可以使用最大后验（MAP）解码。 或者，所识别的可能发射的相位用于数据解调。 这个和相关的特征具有减少由相位调整信息的错误接收引起的相位差异的影响的优点，导致改进的误码率，以及系统容量，数据吞吐量或两者的相应增加。

    Data classification based on cyclic redundancy check and decoder metric
    7.
    发明授权
    Data classification based on cyclic redundancy check and decoder metric 失效
    基于循环冗余校验和解码器度量的数据分类

    公开(公告)号：US08612825B2

    公开(公告)日：2013-12-17

    申请号：US13227884

    申请日：2011-09-08

    申请人： Prashant Udupa Sripathi ,  Jittra Jootar ,  Je Woo Kim ,  Feng Lu

    发明人： Prashant Udupa Sripathi ,  Jittra Jootar ,  Je Woo Kim ,  Feng Lu

    IPC分类号： H03M13/00 ,  H03M13/03

    CPC分类号： H04L1/201 ,  H04L1/0054 ,  H04L1/0061

    摘要： A method of data classification for use in a wireless communication system includes obtaining decoder metrics from a decoder. The decoder metrics correspond to data generated by the decoder. The decoder metrics include a symbol error rate (SER) and an energy metric (EM). The method also includes classifying the data into a first category if the data fails a cyclic redundancy check (CRC) check, into a second category if the data passes the CRC check and is determined to be unreliable, or into a third category if the data passes the CRC check and is determined to be reliable. A reliability of the data is determined based on the decoder metrics and an EM threshold.

    摘要翻译： 一种用于无线通信系统的数据分类方法包括从解码器获得解码器度量。 解码器度量对应于由解码器生成的数据。 解码器度量包括符号错误率（SER）和能量度量（EM）。 该方法还包括如果数据通过循环冗余校验（CRC）检查失败，则将数据分类为第一类别，如果数据通过CRC校验并被确定为不可靠，则将数据分类成第三类别，如果数据 通过CRC校验，确定为可靠。 基于解码器度量和EM阈值来确定数据的可靠性。

    DATA CLASSIFICATION IN A WIRELESS COMMUNICATION SYSTEM
    8.
    发明申请
    DATA CLASSIFICATION IN A WIRELESS COMMUNICATION SYSTEM 失效
    无线通信系统中的数据分类

    公开(公告)号：US20120324317A1

    公开(公告)日：2012-12-20

    申请号：US13227906

    申请日：2011-09-08

    申请人： Prashant Udupa Sripathi ,  Jittra Jootar ,  Je Woo Kim ,  Feng Lu

    发明人： Prashant Udupa Sripathi ,  Jittra Jootar ,  Je Woo Kim ,  Feng Lu

    IPC分类号： H03M13/03

    CPC分类号： H04L1/0054 ,  H04L1/0061 ,  H04L1/201

    摘要： A method of data classification for use in a wireless communication system includes obtaining decoder metrics from a decoder. The decoder metrics correspond to data generated by the decoder. The decoder metrics include a first metric and a second metric. The method also includes classifying the data into a first category if the data fails an error detection check, into a second category if the data passes the error detection check and is determined to be unreliable, or into a third category if the data passes the error detection check and is determined to be reliable. A reliability of the data is determined based on at least one of the decoder metrics and a threshold.

    摘要翻译： 一种用于无线通信系统的数据分类方法包括从解码器获得解码器度量。 解码器度量对应于由解码器生成的数据。 解码器度量包括第一度量和第二度量。 如果数据通过错误检测检查并且数据通过错误检测检查并被确定为不可靠，则该方法还包括将数据分类为第一类别，如果数据未通过错误检测检查，则将数据分类成第三类别，如果数据通过错误 检测检查确定可靠。 基于解码器度量和阈值中的至少一个来确定数据的可靠性。

    SYSTEM AND METHOD FOR REDUCING OVERHEAD OF SEARCHER TASKS FOR DISCONTINUOUS RECEPTION
    9.
    发明申请
    SYSTEM AND METHOD FOR REDUCING OVERHEAD OF SEARCHER TASKS FOR DISCONTINUOUS RECEPTION 有权
    用于不连续接收的搜索器任务的减少的系统和方法

    公开(公告)号：US20120294169A1

    公开(公告)日：2012-11-22

    申请号：US13290033

    申请日：2011-11-04

    申请人： Jimmy C. Chui ,  An-swol C. Hu ,  Jittra Jootar ,  Feng Lu ,  Yi Su

    发明人： Jimmy C. Chui ,  An-swol C. Hu ,  Jittra Jootar ,  Feng Lu ,  Yi Su

    IPC分类号： H04W24/00 ,  H04W52/02

    CPC分类号： H04W52/0274 ,  H04W52/02 ,  H04W52/028 ,  H04W52/14 ,  Y02D70/00 ,  Y02D70/1224 ,  Y02D70/1242 ,  Y02D70/1244 ,  Y02D70/1246 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/164 ,  Y02D70/24 ,  Y02D70/25

    摘要： At least one feature pertains to a method of communication that comprises aligning a measurement task that utilizes a resource within a user equipment, such that at least a portion of the measurement task is performed during a time that the resource is enabled in the user equipment, and executing the measurement task during the time that the resource is enabled in the user equipment. In one example, the measurement task may be a searcher task, the resource may comprise receiver circuitry, and the time that the resource is enabled corresponds to a DRX monitoring interval of a downlink channel, such as a high speed shared control channel. By aligning and executing the searcher task during the time that the resource is enabled in the user equipment, searcher overhead may be reduced. Reducing searcher overhead allows the user equipment to save power by disabling the receiver circuitry.

    摘要翻译： 至少一个特征涉及一种通信方法，包括对齐利用用户设备内的资源的测量任务，使得在用户设备中启用资源的时间期间执行测量任务的至少一部分， 并在用户设备中启用资源的时间内执行测量任务。 在一个示例中，测量任务可以是搜索者任务，资源可以包括接收机电路，并且资源被启用的时间对应于诸如高速共享控制信道的下行链路信道的DRX监视间隔。 通过在用户设备中启用资源的时间内对齐和执行搜索者任务，可以减少搜索者开销。 减少搜索器开销允许用户设备通过禁用接收器电路来节省电力。

    DATA CLASSIFICATION BASED ON CYCLIC REDUNDANCY CHECK AND DECODER METRIC
    10.
    发明申请
    DATA CLASSIFICATION BASED ON CYCLIC REDUNDANCY CHECK AND DECODER METRIC 失效
    基于循环冗余检查和解码器公制的数据分类

    公开(公告)号：US20120226950A1

    公开(公告)日：2012-09-06

    申请号：US13227884

    申请日：2011-09-08

    申请人： Prashant Udupa Sripathi ,  Jittra Jootar ,  Je Woo Kim ,  Feng Lu

    发明人： Prashant Udupa Sripathi ,  Jittra Jootar ,  Je Woo Kim ,  Feng Lu

    IPC分类号： H03M13/09 ,  G06F11/10 ,  G06F11/00

    CPC分类号： H04L1/201 ,  H04L1/0054 ,  H04L1/0061

    摘要： A method of data classification for use in a wireless communication system includes obtaining decoder metrics from a decoder. The decoder metrics correspond to data generated by the decoder. The decoder metrics include a symbol error rate (SER) and an energy metric (EM). The method also includes classifying the data into a first category if the data fails a cyclic redundancy check (CRC) check, into a second category if the data passes the CRC check and is determined to be unreliable, or into a third category if the data passes the CRC check and is determined to be reliable. A reliability of the data is determined based on the decoder metrics and an EM threshold.

    摘要翻译： 一种用于无线通信系统的数据分类方法包括从解码器获得解码器度量。 解码器度量对应于由解码器生成的数据。 解码器度量包括符号错误率（SER）和能量度量（EM）。 该方法还包括如果数据通过循环冗余校验（CRC）检查失败，则将数据分类为第一类别，如果数据通过CRC校验并被确定为不可靠，则将数据分类成第三类别，如果数据 通过CRC校验，确定为可靠。 基于解码器度量和EM阈值来确定数据的可靠性。