公开(公告)号：US20070129027A1

公开(公告)日：2007-06-07

申请号：US11633220

申请日：2006-12-04

申请人： Hang Jin ,  Jing Jiang ,  John Grabner

发明人： Hang Jin ,  Jing Jiang ,  John Grabner

IPC分类号： H04B1/04

CPC分类号： H04B1/0475 ,  H03F1/3241 ,  H04B2001/0425

摘要： The present invention discloses a method and system to compensate for the nonlinearity of the wireless transmitter. The method includes sending a predetermined input bit stream to the power amplifier, calculating the coefficients of the polynomial representing the response curve of the power amplifier and generating the predistortion coefficients of the polynomial representing the response curve of the predistortor. The method linearizes the response curve of the transmitter chain of a wireless station.

摘要翻译： 本发明公开了一种补偿无线发射机非线性的方法和系统。 该方法包括向功率放大器发送预定的输入比特流，计算表示功率放大器的响应曲线的多项式的系数，并产生表示预失真器的响应曲线的多项式的预失真系数。 该方法将无线电台发射机链的响应曲线线性化。

公开(公告)号：US07657237B2

公开(公告)日：2010-02-02

申请号：US11633220

申请日：2006-12-04

申请人： Hang Jin ,  Jing Jiang ,  John Grabner

发明人： Hang Jin ,  Jing Jiang ,  John Grabner

IPC分类号： H04B1/04 ,  H04Q7/20

CPC分类号： H04B1/0475 ,  H03F1/3241 ,  H04B2001/0425

摘要： A method and system are provided to compensate for the nonlinearity of a wireless transmitter. The method includes sending a predetermined input bit stream to the power amplifier, calculating the coefficients of the polynomial representing the response curve of the power amplifier and generating the predistortion coefficients of the polynomial representing the response curve of the predistortor. The method linearizes the response curve of the transmitter chain in a communication device.

摘要翻译： 提供了一种方法和系统来补偿无线发射机的非线性。 该方法包括向功率放大器发送预定的输入比特流，计算表示功率放大器的响应曲线的多项式的系数，并产生表示预失真器的响应曲线的多项式的预失真系数。 该方法将通信设备中发射机链的响应曲线线性化。

公开(公告)号：US08548379B2

公开(公告)日：2013-10-01

申请号：US12543566

申请日：2009-08-19

申请人： Hang Jin ,  John Grabner

发明人： Hang Jin ,  John Grabner

IPC分类号： H04B5/00

CPC分类号： H04W52/42

摘要： A calibration-less transmit beamforming apparatus and method are provided. In a wireless communication device that comprises a plurality of antennas, a gain block is provided in the front-end module associated with each antenna and the same gain block is used during transmit and receive operations. As a result, the transmit phase offset and receive phase offset for each antenna are made to be equal, thereby achieving conditions for transmit beamforming without the need for complex antenna calibration algorithms and hardware.

摘要翻译： 提供了一种无校准的发射波束形成装置和方法。 在包括多个天线的无线通信设备中，在与每个天线相关联的前端模块中提供增益块，并且在发射和接收操作期间使用相同的增益块。 结果，使每个天线的发射相位偏移和接收相位偏移相等，从而实现发射波束成形的条件，而不需要复杂的天线校准算法和硬件。

公开(公告)号：US08249538B2

公开(公告)日：2012-08-21

申请号：US12276449

申请日：2008-11-24

申请人： Hang Jin ,  John Grabner

发明人： Hang Jin ,  John Grabner

IPC分类号： H04B1/10

CPC分类号： H04B1/30

摘要： An offset direct conversion receiver apparatus and corresponding receiving method are provided. A received wireless signal is directly downconverted and demodulated to a baseband offset frequency that is offset from zero frequency to produce an in-phase (I) baseband offset signal centered at the baseband offset frequency and a quadrature-phase (Q) baseband offset signal centered at the baseband offset frequency. The I baseband offset signal and Q baseband offset signal are bandpass filtered to produce an I bandpass signal and a Q bandpass signal, respectively. The I bandpass signal and the Q bandpass signal are downconverted from the baseband offset frequency to zero frequency to produce an I baseband receive signal and a Q baseband receive signal. A technique and logic are also provided to select the best baseband offset frequency used in an offset direct conversion receiver.

摘要翻译： 提供一种偏移直接变换接收装置及相应的接收方法。 接收到的无线信号被直接下变频并被解调为从零频率偏移的基带偏移频率，以产生以基带偏移频率为中心的同相（I）基带偏移信号，并以正交相位（Q）基带偏移信号为中心 在基带偏移频率。 I基带偏移信号和Q基带偏移信号被带通滤波，分别产生I带通信号和Q带通信号。 I带通信号和Q带通信号从基带偏移频率下变频到零频率，以产生I基带接收信号和Q基带接收信号。 还提供了一种技术和逻辑来选择在偏移直接转换接收机中使用的最佳基带偏移频率。

公开(公告)号：US08195240B2

公开(公告)日：2012-06-05

申请号：US12103406

申请日：2008-04-15

申请人： Hang Jin ,  John Grabner ,  Li Guo ,  Qingwen Liu

发明人： Hang Jin ,  John Grabner ,  Li Guo ,  Qingwen Liu

IPC分类号： H04W40/00 ,  H04J3/00

CPC分类号： H04W16/28 ,  H04W48/12 ,  H04W72/048

摘要： A hybrid time-spatial multiplexing technique is provided for beamforming broadcast messages to mobile stations that may be within a coverage region or cell of a base station. The coverage region is divided into a plurality of segments. The mobile stations are assigned to at least one of the segments based on their locations within the coverage region or other criteria. The base station computes beamforming antenna weights which are configured to produce a radiation beam pattern from a plurality of antennas of the base station to respective ones of each of the plurality of segments in the region. A broadcast message is transmitted to each segment of the region in a time-division multiplexed manner using the beamforming antenna weights associated with the radiation beam pattern for the corresponding segment.

摘要翻译： 提供混合时空复用技术用于向可能在基站的覆盖区域或小区内的移动台发送波束成形广播消息。 覆盖区域被分成多个段。 基于其在覆盖区域内的位置或其他标准，移动站被分配给至少一个段。 基站计算波束成形天线权重，其被配置为从该基站的多个天线到该区域中的多个段中的每一个的相应的一个的相应的一个波段图形。 使用与用于相应段的辐射束图案相关联的波束成形天线权重，以时分复用方式将广播消息发送到该区域的每个段。

公开(公告)号：US08116818B2

公开(公告)日：2012-02-14

申请号：US11397214

申请日：2006-04-04

申请人： Hang Jin ,  John Grabner

发明人： Hang Jin ,  John Grabner

IPC分类号： H04M1/00

CPC分类号： H04B7/0617 ,  H04B7/0626 ,  H04B17/373

摘要： A system and method are provided for improving the performance of a beamforming antenna array in a wireless communications system. A predetermined number of spatial signatures are observed for a communications channel between a base station and a mobile terminal during a predetermined time period. One or more test spatial signatures are generated based on statistical analysis of the observed predetermined number of spatial signatures. A beamforming weight is derived based on the generated test spatial signatures for beamforming by an antenna subsystem of the base station.

摘要翻译： 提供了一种用于改善无线通信系统中波束成形天线阵列的性能的系统和方法。 在预定时间段期间，在基站和移动终端之间的通信信道上观察到预定数量的空间签名。 基于观察到的预定数量的空间签名的统计分析来生成一个或多个测试空间签名。 基于由基站的天线子系统产生的用于波束成形的所产生的测试空间特征导出波束成形权重。

公开(公告)号：US08040831B2

公开(公告)日：2011-10-18

申请号：US11364689

申请日：2006-02-27

申请人： Brian L. Kurtz ,  Hang Jin ,  Weidong Yang ,  Daniel Wee ,  Philip B. Davis ,  John Grabner

发明人： Brian L. Kurtz ,  Hang Jin ,  Weidong Yang ,  Daniel Wee ,  Philip B. Davis ,  John Grabner

IPC分类号： H04B7/185

CPC分类号： H04W48/12 ,  H04L5/0026 ,  H04L5/0053 ,  H04W48/14 ,  H04W48/20

摘要： A system and method for managing control information in a wireless communications system. The method comprises broadcasting a predetermined number of preambles through beamforming from a base station, detecting, by a subscriber station, a predetermined frame associated with one selected preamble that has the highest power level, and identifying one or more subcarriers for carrying control information through the selected preamble.

摘要翻译： 一种用于在无线通信系统中管理控制信息的系统和方法。 该方法包括通过波束成形从基站广播预定数量的前同步码，由用户台检测与具有最高功率电平的一个所选择的前导码相关联的预定帧，以及识别用于携带控制信息的一个或多个子载波 所选序言。

公开(公告)号：US20100220810A1

公开(公告)日：2010-09-02

申请号：US12396171

申请日：2009-03-02

申请人： Hang Jin ,  John Grabner ,  Daniel Wee ,  Bror Peterson

发明人： Hang Jin ,  John Grabner ,  Daniel Wee ,  Bror Peterson

IPC分类号： H04L25/49

CPC分类号： H04L27/368 ,  H04L27/2626

摘要： Techniques are provided to pre-distort a signal that is transmitted by a transmitter of a wireless communication device, e.g., a device configured for wireless radio frequency communication. The transmitter of the device inherently introduces distortion to the baseband signal to be transmitted. In at least one frame of a baseband signal to be transmitted, at least one subcarrier in a preamble of the frame is shifted in frequency such that the at least one subcarrier is offset from a normal subcarrier frequency position. The at least one frame of the baseband signal is supplied to the transmitter that is configured to produce a transmit signal for transmission. The transmit signal at an output of the transmitter is sampled or detected and inter-modulation distortion in the transmit signal is determined at one or more frequencies as a result of shifting of the frequency of the at least one subcarrier in the preamble of the at least one frame. The baseband signal is pre-distorted based on the inter-modulation distortion prior to coupling to the transmitter for transmission.

摘要翻译： 提供技术来预先失真由无线通信设备的发射机发射的信号，例如被配置用于无线射频通信的设备。 设备的发射机固有地将失真引入要发射的基带信号。 在要发送的基带信号的至少一帧中，帧的前导码中的至少一个副载波的频率偏移，使得至少一个副载波偏离正常子载波频率位置。 基带信号的至少一帧被提供给被配置为产生用于传输的发射信号的发射机。 在发送器的输出处的发送信号被采样或检测，并且在一个或多个频率上确定发送信号中的互调失真，作为至少一个子帧的至少一个子载波的频率的移位的结果 一帧。 基带信号在耦合到发射机之前基于互调失真被预失真以进行传输。

公开(公告)号：US20100130156A1

公开(公告)日：2010-05-27

申请号：US12276449

申请日：2008-11-24

申请人： Hang Jin ,  John Grabner

发明人： Hang Jin ,  John Grabner

IPC分类号： H04B1/10

CPC分类号： H04B1/30

摘要： An offset direct conversion receiver apparatus and corresponding receiving method are provided. A received wireless signal is directly downconverted and demodulated to a baseband offset frequency that is offset from zero frequency to produce an in-phase (I) baseband offset signal centered at the baseband offset frequency and a quadrature-phase (Q) baseband offset signal centered at the baseband offset frequency. The I baseband offset signal and Q baseband offset signal are bandpass filtered to produce an I bandpass signal and a Q bandpass signal, respectively. The I bandpass signal and the Q bandpass signal are downconverted from the baseband offset frequency to zero frequency to produce an I baseband receive signal and a Q baseband receive signal. A technique and logic are also provided to select the best baseband offset frequency used in an offset direct conversion receiver.

摘要翻译： 提供一种偏移直接变换接收装置及相应的接收方法。 接收到的无线信号被直接下变频并被解调为从零频率偏移的基带偏移频率，以产生以基带偏移频率为中心的同相（I）基带偏移信号，并以正交相位（Q）基带偏移信号为中心 在基带偏移频率。 I基带偏移信号和Q基带偏移信号被带通滤波，分别产生I带通信号和Q带通信号。 I带通信号和Q带通信号从基带偏移频率下变频到零频率，以产生I基带接收信号和Q基带接收信号。 还提供了一种技术和逻辑来选择在偏移直接转换接收机中使用的最佳基带偏移频率。

公开(公告)号：US07548764B2

公开(公告)日：2009-06-16

申请号：US11346762

申请日：2006-02-03

申请人： Hang Jin ,  Brian L. Kurtz ,  Weidong Yang ,  Daniel Wee ,  Phil Davis ,  John Grabner

发明人： Hang Jin ,  Brian L. Kurtz ,  Weidong Yang ,  Daniel Wee ,  Phil Davis ,  John Grabner

IPC分类号： H04M1/00

CPC分类号： H01Q3/40 ,  H01Q1/246 ,  H01Q3/26 ,  H01Q25/00

摘要： Techniques are provided herein for generating multiple radiation patterns. An antenna system comprises an antenna array having one or more antennas for providing a first radiation pattern and a second radiation pattern, a transform matrix for transforming one or more inputs into one or more outputs according to a transform function, wherein the outputs of the transform matrix provide signals to the antennas with predetermined phases and magnitudes for generating the first and second radiation patterns, and a transmitter for providing a first set of signals corresponding to the first radiation pattern and a second set of signals corresponding to the second radiation pattern to inputs of the transform matrix.

摘要翻译： 本文提供了用于产生多个辐射图案的技术。 天线系统包括具有一个或多个天线的天线阵列，用于提供第一辐射图案和第二辐射图案，用于根据变换函数将一个或多个输入转换为一个或多个输出的变换矩阵，其中变换的输出 矩阵向天线提供具有用于产生第一和第二辐射图案的预定相位和幅度的信号，以及用于提供对应于第一辐射图案的第一组信号和与第二辐射图对应的第二组信号的发射机， 的变换矩阵。