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    Predistortion technique for high power amplifiers
    1.
    发明授权
    Predistortion technique for high power amplifiers 失效
    大功率放大器的预失真技术

    公开(公告)号：US06600792B2

    公开(公告)日：2003-07-29

    申请号：US09105532

    申请日：1998-06-26

    申请人： Franklin P. Antonio ,  Walid Hamdy ,  Nitin Kasturi ,  Christopher C. Riddle ,  David P. Oses

    发明人： Franklin P. Antonio ,  Walid Hamdy ,  Nitin Kasturi ,  Christopher C. Riddle ,  David P. Oses

    IPC分类号： H04L2549

    CPC分类号： H03F1/3247 ,  H03F1/3241 ,  H03F2201/3233

    摘要： A predistortion technique for high power amplifiers includes an adaptive predistortion algorithm that operates independently of data samples to write a set of complex gain values, or predistortion parameters, to a lookup table. The algorithm may be processor-driven. The gain values are taken from the lookup table and multiplied by a complex digital baseband waveform. The gain values may first be subjected to interpolation. The downconverted output of the amplifier is measured to gauge the efficacy of the predistortion. Based on the effect of the predistortion upon the ratio of in-band power to out-of-band power, decisions are made on the set of predistortion parameters for the next iteration of the algorithm. The algorithm runs continuously, perturbing parameters and adapting the predistortion functions accordingly in an effort to continually reflect instantaneous amplitude-modulation and phase-modulation relationships that may change over time with temperature variation or component aging.

    摘要翻译： 用于高功率放大器的预失真技术包括自适应预失真算法，其独立于数据样本操作以将一组复增益值或预失真参数写入查找表。 算法可能是处理器驱动的。 增益值取自查表，并乘以复数数字基带波形。 增益值可以首先进行插值。 测量放大器的下变频输出以测量预失真的功效。 基于预失真对带内功率与带外功率之比的影响，决定了该算法下一次迭代的预失真参数集。 该算法连续运行，扰动参数并相应地调整预失真函数，以努力连续反映随着温度变化或分量老化而随时间变化的瞬时幅度调制和相位调制关系。

    Method and apparatus for reverse link overload detection
    2.
    发明授权
    Method and apparatus for reverse link overload detection 失效
    用于反向链路过载检测的方法和装置

    公开(公告)号：US07440426B2

    公开(公告)日：2008-10-21

    申请号：US10442493

    申请日：2003-05-20

    申请人： Franklin P. Antonio ,  Walid Hamdy

    发明人： Franklin P. Antonio ,  Walid Hamdy

    IPC分类号： H04B7/185 ,  H04Q7/20

    CPC分类号： H04W28/26 ,  H04B17/382 ,  H04W52/343

    摘要： A detector is used to sample of set of power measurements of a receive signal. The receive signal may comprise one or more signals from remote users as well as interference. A variance of the set of power measurements is also determined. The variance is compared to an overload threshold value. If the variance exceeds the overload threshold value, for some period of time, the system is declared to be operating at a potentially unstable point. In this state, future connection originations are denied.

    摘要翻译： 检测器用于对接收信号的一组功率测量进行采样。 接收信号可以包括来自远程用户的一个或多个信号以及干扰。 还确定了功率测量集的变化。 将方差与过载阈值进行比较。 如果方差超过过载阈值，在一段时间内，系统被声明在潜在的不稳定点运行。 在这种状态下，将来的连接发起被拒绝。

    Method and apparatus for reverse link overload detection
    3.
    发明授权
    Method and apparatus for reverse link overload detection 有权
    用于反向链路过载检测的方法和装置

    公开(公告)号：US06603745B1

    公开(公告)日：2003-08-05

    申请号：US09181345

    申请日：1998-10-28

    申请人： Franklin P. Antonio ,  Walid Hamdy

    发明人： Franklin P. Antonio ,  Walid Hamdy

    IPC分类号： H04B7185

    CPC分类号： H04W28/26 ,  H04B17/382 ,  H04W52/343

    摘要： A detector is used to sample of set of power measurements of a receive signal. The receive signal may comprise one or more signals from remote users as well as interference. A variance of the set of power measurements is also determined. The variance is compared to an overload threshold value. If the variance exceeds the overload threshold value, for some period of time, the system is declaraed to be operating at a potentially unstable point. In this state, future connection originations are denied.

    摘要翻译： 检测器用于对接收信号的一组功率测量进行采样。 接收信号可以包括来自远程用户的一个或多个信号以及干扰。 还确定了功率测量集的变化。 将方差与过载阈值进行比较。 如果方差超过过载阈值，在一段时间内，系统将被声明在潜在的不稳定点运行。 在这种状态下，将来的连接发起被拒绝。

    Softer handoff in a base station employing virtual channel elements
    4.
    发明授权
    Softer handoff in a base station employing virtual channel elements 有权
    在采用虚拟通道元件的基站中较软切换

    公开(公告)号：US06519456B2

    公开(公告)日：2003-02-11

    申请号：US09172489

    申请日：1998-10-14

    申请人： Franklin P. Antonio ,  Houtan Dehesh ,  Walid Hamdy ,  Kuo-Chun Lee ,  Jan K. Wegrzyn

    发明人： Franklin P. Antonio ,  Houtan Dehesh ,  Walid Hamdy ,  Kuo-Chun Lee ,  Jan K. Wegrzyn

    IPC分类号： H04Q722

    CPC分类号： H04W36/06 ,  H04W36/18 ,  H04W52/40

    摘要： A base station architecture splits modem functionality into modulator and demodulator entities, each configured to handle multiple telephone calls. A high-speed digital bus with associated routing elements connects multiple-channel (i.e., multiuser) modulator and demodulator elements. The modulator and demodulator elements may be physically separated, residing on different cards, and even different shelves, within the base station. During softer handoff between forward channels of the base station, multiple modulator elements use the address of a demodulator element in communication with a mobile subscriber unit. A base station controller broadcasts forward-link frames to all modulator elements. The multiple modulator elements simultaneously receive forward-link frames from the base station controller. The multiple modulator elements filter these forward-link frames and accept only those to be transmitted to the particular mobile subscriber unit in communication with the demodulator element.

    摘要翻译： 基站架构将调制解调器功能分解成调制器和解调器实体，每个被配置为处理多个电话呼叫。 具有相关联的路由元件的高速数字总线连接多通道（即，多用户）调制器和解调器元件。 调制器和解调器元件可以在基站内物理上分离，驻留在不同的卡上，甚至不同的货架上。 在基站的前向信道之间的较软切换期间，多个调制器元件使用与移动用户单元通信的解调器元件的地址。 基站控制器向所有调制器元件广播前向链路帧。 多个调制器元件同时从基站控制器接收前向链路帧。 多个调制器元件对这些前向链路帧进行过滤，并且仅接收要发射到与解调器元件通信的特定移动用户单元的那些。

    Variable block size adaptation algorithm for noise-robust acoustic echo cancellation
    8.
    发明授权
    Variable block size adaptation algorithm for noise-robust acoustic echo cancellation 失效
    用于噪声鲁棒声学回声消除的可变块大小自适应算法

    公开(公告)号：US5546459A

    公开(公告)日：1996-08-13

    申请号：US146644

    申请日：1993-11-01

    申请人： Gilbert C. Sih ,  Franklin P. Antonio

    发明人： Gilbert C. Sih ,  Franklin P. Antonio

    IPC分类号： H03H21/00 ,  H04B3/23 ,  H04M9/08

    CPC分类号： H04B3/23 ,  H03H21/0012

    摘要： An apparatus that automatically adjusts the adaptation block size for a least-mean square (LMS) adaptive filter depending on the input signal-to-noise ratio (SNR) is disclosed. The apparatus monitors the instantaneous SNR and continually adjusts the block size to provide high noise immunity, thereby increasing the convergence speed of the filter and decreasing the asymptotic mean-square error. An exemplary embodiment of the present invention is presented in the context of acoustic echo cancellation, though it is noted that the adaptive filter of the present invention is useful in any environment in which the noise characteristics are subject to change.

    摘要翻译： 公开了一种根据输入信噪比（SNR）自动调整最小均方（LMS）自适应滤波器的自适应块大小的装置。 该装置监视瞬时信噪比，并持续调整块大小，提供高噪声抗扰度，从而提高滤波器的收敛速度，并减小渐近均方误差。 尽管要注意的是本发明的自适应滤波器在噪声特性可能改变的任何环境中都是有用的，但本发明的示例性实施例在声学回声消除的上下文中呈现。

    Increased capacity data transmission in a CDMA wireless communication system
    10.
    发明授权
    Increased capacity data transmission in a CDMA wireless communication system 失效
    增加CDMA无线通信系统中的容量数据传输

    公开(公告)号：US06426960B2

    公开(公告)日：2002-07-30

    申请号：US08881552

    申请日：1997-06-24

    申请人： Franklin P. Antonio

    发明人： Franklin P. Antonio

    IPC分类号： H04J116

    CPC分类号： H04W52/343

    摘要： A method and apparatus for transmitting voice and data in a code division multiple access (CDMA) wireless telecommunications system is described. In an exemplary embodiment of the invention, a base station transmits voice information at a voice transmit power and data at a data transmit power that is equal to a maximum transmit power minus the voice transmit power. In a preferred embodiment of the invention, each base station reports the voice transmit power to a base station controller in 20 ms intervals. The base station controller responds by calculating an available data transmit capacity, and by forwarding data to each base station equal to the available data transmit capacity. Each base station then transmits all voice data at the current voice transmit power, and data at the current data transmission power. If the amount of data received exceeds the capacity provided by the current data transmission power, some data is not transmitted. The base station then notifies the base station controller if data was not transmitted, and the base station controller attempts to retransmit the data at a later time.

    摘要翻译： 描述了在码分多址（CDMA）无线电信系统中发送语音和数据的方法和装置。 在本发明的示例性实施例中，基站以语音发送功率和等于最大发送功率减去语音发送功率的数据发送功率的数据发送语音信息。 在本发明的优选实施例中，每个基站以20ms的间隔向基站控制器报告语音发送功率。 基站控制器通过计算可用数据传输容量，并将数据转发到等于可用数据传输容量的每个基站来进行响应。 每个基站然后以当前语音发送功率发送所有语音数据，并以当前数据发送功率发送数据。 如果接收到的数据量超过当前数据发送功率提供的容量，则不会发送一些数据。 然后，基站通知基站控制器是否没有发送数据，并且基站控制器尝试在稍后的时间重传数据。