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171 条记录 (耗时 0.022 秒)

    Method and apparatus for joint detection of data in a direct sequence spread spectrum communications system
    63.
    发明授权
    Method and apparatus for joint detection of data in a direct sequence spread spectrum communications system 失效
    用于在直接序列扩频通信系统中联合检测数据的方法和装置

    公开(公告)号：US06339612B1

    公开(公告)日：2002-01-15

    申请号：US09020970

    申请日：1998-02-09

    申请人： Kenneth A. Stewart ,  Yi Qiao

    发明人： Kenneth A. Stewart ,  Yi Qiao

    IPC分类号： H04L2730

    CPC分类号： H04B1/7105 ,  H04B7/0854

    摘要： Joint detection of data signals occurs in a code division, multiple access (CDMA) communication system as follows: A digital signal processor (315) first extracts a midamble portion of transmitted signal vectors and generates an estimate of the channel response corresponding to each user-antenna pair using a channel estimator (401). In the preferred embodiment, each user's transmission within the communication system comprises either the type-1 or type-2 burst with varying midamble and guard period durations. Next, a convolution processor (402) forms the convolution of the user signature sequence with the channel impulse response estimate associated with each user and each of the antennas (308)-(310). A detector (403) utilizes the set of vectors and creates a set of sub-system matrices and solves the sub-system matrices to extract symbol information from an individual remote unit's transmission. Finally, the detector (403) outputs symbol information for subsequent infrastructure processing.

    摘要翻译： 数据信号的联合检测发生在如下的码分多址（CDMA）通信系统中：数字信号处理器（315）首先提取发送信号向量的中间码部分，并产生对应于每个用户 - 天线对使用信道估计器（401）。 在优选实施例中，通信系统内的每个用户的传输包括具有变化的中间码和保护时段持续时间的类型1或类型2的突发。 接下来，卷积处理器（402）形成用户签名序列与与每个用户和每个天线（308） - （310）相关联的信道脉冲响应估计的卷积。 检测器（403）利用该组矢量并创建一组子系统矩阵并且解决子系统矩阵以从各个远程单元的传输提取符号信息。 最后，检测器（403）输出用于后续基础设施处理的符号信息。

    Method and apparatus for group encoding signals
    64.
    发明授权
    Method and apparatus for group encoding signals 失效
    组编码信号的方法和装置

    公开(公告)号：US5761634A

    公开(公告)日：1998-06-02

    申请号：US627872

    申请日：1996-04-04

    申请人： Kenneth A. Stewart ,  Michael D. Kotzin

    发明人： Kenneth A. Stewart ,  Michael D. Kotzin

    IPC分类号： G10L19/04 ,  G10L19/00 ,  G10L19/12 ,  G10L19/14 ,  H03M7/30 ,  H04B7/216 ,  H04L1/00 ,  G01L5/00

    CPC分类号： H04L1/20 ,  G10L19/16 ,  G10L19/18 ,  H04L1/0014

    摘要： A code division multiple access (CDMA) communication system reduces system self-interference and enhances system capacity by making rate selection decisions for individual speech encoders in concert with other speech encoders. The system utilizes perpetually weighted error metrics (401) as input into a rate controller (404) which determines and provides selected rates (402) back to the encoders (105). The system provides optimum voice quality and system capacity in that it allows specific encoders to decrease their rate, which improves capacity, as necessary while allowing other encoders to maintain their rates. This prevents needless degradation in voice quality at those times when system capacity needs to be temporarily increased.

    摘要翻译： 码分多址（CDMA）通信系统通过与其他语音编码器一致地对各个语音编码器进行速率选择决定来减少系统自干扰并增强系统容量。 系统利用永久加权误差度量（401）作为速率控制器（404）的输入，速率控制器（404）确定并提供选择的速率（402）回到编码器（105）。 该系统提供最佳语音质量和系统容量，因为它允许特定编码器降低速率，从而根据需要提高容量，同时允许其他编码器维持速率。 这样可以在系统容量需要暂时增加的时候防止语音质量的不必要的降低。

    Inter-modulation distortion reduction in multi-mode wireless communication terminal
    65.
    发明授权
    Inter-modulation distortion reduction in multi-mode wireless communication terminal 有权
    多模无线通信终端的互调失真减少

    公开(公告)号：US09413395B2

    公开(公告)日：2016-08-09

    申请号：US13006096

    申请日：2011-01-13

    申请人： Robert T. Love ,  Ravikiran Nory ,  Kenneth A. Stewart ,  Ravi Kuchibhotla

    发明人： Robert T. Love ,  Ravikiran Nory ,  Kenneth A. Stewart ,  Ravi Kuchibhotla

    IPC分类号： H04M1/00 ,  H04B1/00

    CPC分类号： H04W52/243 ,  H04B1/0064 ,  H04W52/267 ,  H04W52/30 ,  H04W52/325 ,  H04W72/0413 ,  H04W72/1215 ,  H04W88/06

    摘要： A multimode wireless communication terminal that communicates using a first radio access technology (RAT) and a second RAT determines whether the first and second RATs are in an active state, and modifies a maximum transmit power limit of the first RAT based on a voice codec rate of a voice transmission on the second RAT when the first RAT and the second RAT are in the active state concurrently, wherein the second RAT is conducting the voice transmission in the active state. In an alternative embodiment, the limit is modified based on a transmit power status of the second RAT or on a transmission type of the first RAT.

    摘要翻译： 使用第一无线接入技术（RAT）和第二RAT进行通信的多模无线通信终端确定第一RAT和第二RAT是否处于活动状态，并且基于语音编解码速率来修改第一RAT的最大发射功率限制 当第一RAT和第二RAT同时处于活动状态时，在第二RAT上的语音传输，其中第二RAT正在进行处于活动状态的语音传输。 在替代实施例中，基于第二RAT的发射功率状态或第一RAT的传输类型来修改限制。

    Method and apparatus for initial acquisition and cell search for an OFDMA system
    66.
    发明授权
    Method and apparatus for initial acquisition and cell search for an OFDMA system 有权
    用于OFDMA系统的初始采集和小区搜索的方法和装置

    公开(公告)号：US08767525B2

    公开(公告)日：2014-07-01

    申请号：US13183725

    申请日：2011-07-15

    申请人： Hidenori Akita ,  Kevin L. Baum ,  Brian K. Classon ,  Massaya Fukuta ,  Hiroshi Hayashi ,  Vijay Nangia ,  Robert T. Love ,  Kenneth A. Stewart

    发明人： Hidenori Akita ,  Kevin L. Baum ,  Brian K. Classon ,  Massaya Fukuta ,  Hiroshi Hayashi ,  Vijay Nangia ,  Robert T. Love ,  Kenneth A. Stewart

    IPC分类号： H04J11/00

    CPC分类号： H04W48/16 ,  H04J11/0073 ,  H04L5/0007 ,  H04L27/2613 ,  H04L27/2655 ,  H04L27/2656 ,  H04L27/266 ,  H04L27/2663

    摘要： A method and apparatus is provided for transmitting an orthogonal frequency domain multiple access (OFDMA) signal including a synchronization channel signal transmitted within a localized portion of a bandwidth of the OFDMA signal, the synchronization channel signal having predetermined time domain symmetry within the localized portion of the bandwidth and including information for providing at least partial cell identification information. The synchronization channel signal enables an initial acquisition and cell search method with low computational load which provides OFDMA symbol timing detection and frequency error detection and frame boundary detection and cell specific information detection in an OFDMA system supporting multiple system bandwidths, both synchronized and un-synchronized systems, a large cell index and an OFDMA symbol structure with both short and long cyclic prefix length.

    摘要翻译： 提供了一种用于发送包括在OFDMA信号的带宽的局部部分内发送的同步信道信号的正交频域多址（OFDMA）信号的方法和装置，所述同步信道信号在所述OFDMA信号的局部部分内部具有预定的时域对称性 所述带宽并且包括用于提供至少部分小区识别信息的信息。 同步信道信号能够实现具有低计算负荷的初始采集和小区搜索方法，其在支持多个系统带宽的同步和非同步的OFDMA系统中提供OFDMA符号定时检测和频率误差检测以及帧边界检测和小区特定信息检测 系统，大的小区索引和具有短和长循环前缀长度的OFDMA符号结构。

    Control and Data Signaling in Heterogeneous Wireless Communication Networks
    68.
    发明申请
    Control and Data Signaling in Heterogeneous Wireless Communication Networks 有权
    异构无线通信网络中的控制和数据信令

    公开(公告)号：US20130188505A1

    公开(公告)日：2013-07-25

    申请号：US13682721

    申请日：2012-11-20

    申请人： Ravikiran Nory ,  Ravi Kuchibhotla ,  Jialing Liu ,  Robert T. Love ,  Ajit Nimbalker ,  Kenneth A. Stewart

    发明人： Ravikiran Nory ,  Ravi Kuchibhotla ,  Jialing Liu ,  Robert T. Love ,  Ajit Nimbalker ,  Kenneth A. Stewart

    IPC分类号： H04W72/04

    CPC分类号： H04W72/0426 ,  H04L5/0053 ,  H04W48/16 ,  H04W72/042 ,  H04W72/0453

    摘要： A method in a wireless communication device including receiving control signaling from a base station in a control region of a downlink carrier spanning a first bandwidth, receiving a signaling message from the base station indicating a second bandwidth, receiving a first control message within the control region using a first Downlink Control Information (DCI) format size, the first DCI format size based on the first bandwidth, and receiving a second control message within the control region using a second DCI format size, the second DCI format size based on the second bandwidth, wherein the second bandwidth is distinct from the first bandwidth and the first and second control messages indicate downlink resource assignments for the downlink carrier.

    摘要翻译： 一种无线通信设备中的方法，包括从跨越第一带宽的下行链路载波的控制区域中的基站接收控制信令，从基站接收指示第二带宽的信令消息，在控制区域内接收第一控制消息 使用第一下行链路控制信息（DCI）格式大小，基于第一带宽的第一DCI格式大小，以及使用第二DCI格式大小在控制区域内接收第二控制消息，基于第二带宽的第二DCI格式大小 ，其中所述第二带宽与所述第一带宽不同，并且所述第一和第二控制消息指示所述下行链路载波的下行链路资源分配。

    Multi-antenna configuration signaling in wireless communication system
    69.
    发明授权
    Multi-antenna configuration signaling in wireless communication system 有权
    无线通信系统中的多天线配置信令

    公开(公告)号：US08484530B2

    公开(公告)日：2013-07-09

    申请号：US13399020

    申请日：2012-02-17

    申请人： Kenneth A. Stewart ,  Tyler A. Brown ,  Robert T. Love

    发明人： Kenneth A. Stewart ,  Tyler A. Brown ,  Robert T. Love

    IPC分类号： G06F11/00

    CPC分类号： H04L1/0032 ,  H04L5/0023

    摘要： A wireless communication infrastructure entity including a transceiver coupled to a controller configured to generate parity bits based on an information word. The controller is also configured to encode the parity bits based on a communication configuration, e.g., symbol information, wherein the encoded parity bits are combined with the information word for transmission by the transceiver. A user terminal in receipt of the information word includes a controller configured to determine the communication configuration based on a set of configuration indicator bits used to encode the parity bits.

    摘要翻译： 一种无线通信基础设施实体，包括耦合到控制器的收发器，所述控制器被配置为基于信息字生成奇偶校验位。 控制器还被配置为基于通信配置（例如，符号信息）对奇偶校验位进行编码，其中编码的奇偶校验位与用于由收发器发射的信息字组合。 接收信息字的用户终端包括控制器，配置为基于用于对奇偶校验位进行编码的一组配置指示符位来确定通信配置。

    Apparatus and methods for jointly decoding messages based on apriori knowledge of modified codeword transmission
    70.
    发明授权
    Apparatus and methods for jointly decoding messages based on apriori knowledge of modified codeword transmission 有权
    基于改进的码字传输的先验知识联合解码消息的装置和方法

    公开(公告)号：US08462890B2

    公开(公告)日：2013-06-11

    申请号：US12178287

    申请日：2008-07-23

    申请人： Kenneth A. Stewart ,  Michael E. Buckley ,  Olivier Peyrusse ,  Jeffrey C Smolinske

    发明人： Kenneth A. Stewart ,  Michael E. Buckley ,  Olivier Peyrusse ,  Jeffrey C Smolinske

    IPC分类号： H04L27/06

    CPC分类号： H04L1/0045 ,  H03M13/2933 ,  H03M13/3769 ,  H03M13/41 ,  H03M13/6306 ,  H04L1/0064 ,  H04L1/0072 ,  H04L1/1835

    摘要： A method and apparatus for jointly decoding a first and second message is disclosed. The signaling scenario illustrated by FIG. 1 and using the codeword properties defined herein, the various embodiments may combine multiple messages under the hypothesis that the value of a message portion corresponding any subsequent observed transmission is different. Accordingly a first buffer may store the first observed message frame (509) and a second buffer may sum the LLR's of subsequent observed frames (513).In the embodiments disclosed, two decoding hypotheses are required only; a first where the two buffers are combined directly (513) and a second where the difference codeword bit LLR's of the first buffer (509) are inverted before combining with those of the second buffer (519). A maximum of N transmissions is allowed by the receiver (523), after which a decoding failure is declared.

    摘要翻译： 公开了一种用于联合解码第一和第二消息的方法和装置。 图1所示的信令场景。 如图1所示，并且使用本文定义的码字属性，各种实施例可以在假设下对应于任何后续观察到的传输的消息部分的值不同的情况下组合多个消息。 因此，第一缓冲器可以存储第一观察消息帧（509），并且第二缓冲器可以对后续观察帧（513）的LLR进行求和。 在所公开的实施例中，仅需要两个解码假设; 第一缓冲器，其中两个缓冲器直接组合（513），第二缓冲器的第二缓冲器（509）的差分码字比特LLR与第二缓冲器（519）组合之前被反转。 接收机（523）允许最多N个传输，之后声明解码失败。