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9 条记录 (耗时 0.017 秒)

    Methods and apparatus for high data rate transmission in narrowband mobile radio channels
    1.
    发明授权
    Methods and apparatus for high data rate transmission in narrowband mobile radio channels 失效
    窄带移动无线电信道中高数据速率传输的方法和装置

    公开(公告)号：US5960039A

    公开(公告)日：1999-09-28

    申请号：US631315

    申请日：1996-04-10

    申请人： Carol Catalano Martin ,  Jack Harriman Winters

    发明人： Carol Catalano Martin ,  Jack Harriman Winters

    IPC分类号： H04B7/005 ,  H04B7/06 ,  H04B7/08 ,  H04B7/26 ,  H04B7/02 ,  H04L1/02

    CPC分类号： H04B7/0848 ,  H04B7/0613

    摘要： An adaptive high speed data transmission system is described. In one aspect, the transmitter for this system employs a plurality of transmit antennas which have controllable offsets. The transmitter also includes signal coding circuitry suitable for use to address transmission impairments due to fast fading in the transmission channel. At the receiver, the received signal is analyzed to determine the fading characteristics of the channel. Where slow fading is detected, the offsets are employed to convert the slow fading into fast fading. The channel characteristics are continually resampled and these characteristics are used to adjust the transmitter and the receiver to achieve optimal transmission speed.

    摘要翻译： 描述了一种自适应高速数据传输系统。 在一个方面，该系统的发射机采用具有可控偏移的多个发射天线。 发射机还包括适用于解决由于传输信道中的快速衰落引起的传输损伤的信号编码电路。 在接收机处，分析接收到的信号以确定信道的衰落特性。 在检测到慢衰落的地方，使用偏移将慢衰落转换成快衰落。 通道特性不断重新采样，这些特性用于调整发射机和接收机，以达到最佳的传输速度。

    System and method to prevent error propagation
    3.
    发明授权
    System and method to prevent error propagation 失效
    防止错误传播的系统和方法

    公开(公告)号：US06278752B1

    公开(公告)日：2001-08-21

    申请号：US08850738

    申请日：1997-05-02

    申请人： Glenn David Golden ,  Carol Catalano Martin ,  Nelson Ray Sollenberger ,  Jack Harriman Winters

    发明人： Glenn David Golden ,  Carol Catalano Martin ,  Nelson Ray Sollenberger ,  Jack Harriman Winters

    IPC分类号： H04B110

    CPC分类号： H04L7/041 ,  H04L7/033

    摘要： A system and method for generating a coherent reference signal for extracting desired user signals from received signals even after error propagation is underway, are presented. A data symbol preceding a sequence whose relative phases are known is used as an absolute phase reference. Since errors in detection of the phase reference symbol are usually caused by error propagation already underway, the sequence can be used to reacquire the desired signal with merely an absolute phase shift in detected data, which allows accurate differential detection of the desired user signal even in the absence of absolute phase knowledge.

    摘要翻译： 提出了即使在错误传播之后也产生用于从接收信号中提取所需用户信号的相干参考信号的系统和方法。 使用相对相位已知的序列之前的数据符号作为绝对相位参考。 由于相位参考符号的检测中的误差通常是由正在进行的误差传播引起的，所以该序列可用于仅在所检测的数据中用绝对相移来重新获取期望的信号，这允许精确的差分检测期望的用户信号，即使在 缺乏绝对阶段的知识。

    Introducing processing delay as a multiple of the time slot duration
    4.
    发明授权
    Introducing processing delay as a multiple of the time slot duration 失效
    将处理延迟引入时隙持续时间的倍数

    公开(公告)号：US5887037A

    公开(公告)日：1999-03-23

    申请号：US606777

    申请日：1996-02-27

    申请人： Glenn David Golden ,  Carol Catalano Martin ,  Jack Harriman Winters

    发明人： Glenn David Golden ,  Carol Catalano Martin ,  Jack Harriman Winters

    IPC分类号： H04J3/00 ,  H04B7/08 ,  H04B7/26 ,  H04L1/06 ,  H04B7/06

    CPC分类号： H04L1/06 ,  H04B7/0851

    摘要： An apparatus for performance improvement of a burst mode digital wireless receiver has a processing circuit for processing a plurality of received signals and providing a processed signal and a delay circuit for introducing a predetermined delay to the processed signal. The delay circuit is coupled to the processing circuit. The predetermined delay is such that the processed signal is delayed to correspond with a later data burst. The processing circuit weights and combines the received signals, where the processing circuit reduces a mean squared error of an output signal. The processing circuit weights and combines the received signals using a predetermined symbol pattern within a sync sequence within a time slot.

    摘要翻译： 用于突发模式数字无线接收机的性能改进的装置具有用于处理多个接收信号并提供经处理的信号的处理电路和用于向经处理的信号引入预定延迟的延迟电路。 延迟电路耦合到处理电路。 预定的延迟使得经处理的信号被延迟以与稍后的数据突发相对应。 处理电路对接收到的信号进行加权和组合，其中处理电路减小输出信号的均方误差。 处理电路使用在时隙内的同步序列内的预定符号模式对接收的信号进行加权和组合。

    Adaptive communication system and method using unequal weighting of interface and noise
    5.
    发明授权
    Adaptive communication system and method using unequal weighting of interface and noise 失效
    自适应通信系统和方法使用接口和噪声的不平等权重

    公开(公告)号：US5819168A

    公开(公告)日：1998-10-06

    申请号：US850027

    申请日：1997-05-01

    申请人： Glenn David Golden ,  Carol Catalano Martin ,  Nelson Ray Sollenberger ,  Jack Harriman Winters

    发明人： Glenn David Golden ,  Carol Catalano Martin ,  Nelson Ray Sollenberger ,  Jack Harriman Winters

    IPC分类号： H01Q3/26 ,  H04B1/12 ,  H04B7/08

    CPC分类号： H01Q3/2611 ,  H04B1/126 ,  H04B7/0865

    摘要： A communication system and method, particularly adapted for use in adaptive antenna arrays, are presented. A plurality of signals containing a desired signal, interference, and noise are received through an array of antennas connected to a base receiving station. The signal arriving at each antenna is weighted according to computations which adjust those weights as a function of received interference and noise power in an unequal manner, based on the estimation accuracy of the interference and noise, which in turn depends on factors such as interference to noise power ratios and fading rate.

    摘要翻译： 提出了一种特别适用于自适应天线阵列的通信系统和方法。 通过连接到基站接收站的天线阵列来接收包含所需信号，干扰和噪声的多个信号。 根据计算，根据干扰和噪声的估计精度，根据接收到的干扰和噪声功率的函数调整这些权重的计算来对每个天线的到达信号进行加权，反过来依赖于干扰和噪声的干扰 噪声功率比和衰落速率。

    Weight generation in stationary interference and noise environments
    8.
    发明授权
    Weight generation in stationary interference and noise environments 失效
    稳定干扰和噪声环境中的重量产生

    公开(公告)号：US5875216A

    公开(公告)日：1999-02-23

    申请号：US848946

    申请日：1997-05-01

    申请人： Carol Catalano Martin

    发明人： Carol Catalano Martin

    IPC分类号： H04B1/28 ,  H04B1/38 ,  H04B7/08 ,  H04L1/06 ,  H04L27/22

    CPC分类号： H04B1/0003 ,  H04B1/0007 ,  H04B1/28 ,  H04B1/38 ,  H04B7/0851 ,  H04L1/06 ,  H04L27/22

    摘要： An apparatus for performance improvement of a digital wireless receiver comprises a processing circuit for processing a plurality of received signals and providing a processed signal, wherein a plurality of weights is applied to the plurality of received signals producing a plurality of weighted received signals. The plurality of weighted received signals are combined to provide the processed signal. A weight generation circuit generates the plurality of weights wherein weights are based on a ratio of a desired signal, a noise signal and an interference signal.

    摘要翻译： 一种用于数字无线接收机的性能改进的装置包括处理电路，用于处理多个接收信号并提供处理的信号，其中多个权重被应用于产生多个加权接收信号的多个接收信号。 多个加权接收信号被组合以提供经处理的信号。 权重产生电路产生多个权重，其中权重基于期望信号，噪声信号和干扰信号的比率。