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    • 6. 发明授权
    • Transmitter characterization for digital pre-distortion using offset preamble subcarriers
    • 使用偏移前导码副载波进行数字预失真的发射机特性
    • US08218677B2
    • 2012-07-10
    • US12396171
    • 2009-03-02
    • Hang JinJohn GrabnerDaniel WeeBror Peterson
    • Hang JinJohn GrabnerDaniel WeeBror Peterson
    • H04L25/49
    • H04L27/368H04L27/2626
    • 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.
    • 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。
    • 8. 发明申请
    • Transmitter Characterization for Digital Pre-Distortion Using Offset Preamble Subcarriers
    • 使用偏移前导子载波进行数字预失真的发射机特性
    • US20100220810A1
    • 2010-09-02
    • US12396171
    • 2009-03-02
    • Hang JinJohn GrabnerDaniel WeeBror Peterson
    • Hang JinJohn GrabnerDaniel WeeBror Peterson
    • H04L25/49
    • H04L27/368H04L27/2626
    • 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.
    • 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。
    • 9. 发明申请
    • Method and system for interference reduction
    • 减少干扰的方法和系统
    • US20070010203A1
    • 2007-01-11
    • US11437998
    • 2006-05-18
    • Daniel WeeHang LiWeidong YangGuanghan Xu
    • Daniel WeeHang LiWeidong YangGuanghan Xu
    • H04B1/00H04B15/00
    • H04W16/18H04B1/7103H04B2201/709709H04J11/005H04J13/16H04W16/10H04W28/18H04W72/00H04W72/08H04W88/08H04W88/12
    • A method and system for interference reduction for telecommunication systems are disclosed. The system comprises a base station control device (BCD) for configuring one or more parameters for operating one or more base stations (BSs), a first BS covering a first cell having one or more mobile terminals therein, a second BS covering a second cell neighboring to the first cell and sharing a predetermined frequency band with the first cell, wherein one or more radio frames constructed for communications between the first BS and any mobile terminal of the first cell and one or more radio frames constructed for communications between the second BS and any mobile terminal of the second cell are distinguishable by defining different channel configuration sets having one or more operation parameters, wherein the parameters includes a training sequence, a spreading code, and a channel observation window position.
    • 公开了用于电信系统的干扰减少的方法和系统。 该系统包括用于配置用于操作一个或多个基站(BS)的一个或多个参数的基站控制设备(BCD),覆盖其中具有一个或多个移动终端的第一小区的第一BS,覆盖第二小区的第二BS 与所述第一小区相邻并且与所述第一小区共享预定频带,其中为所述第一小区和所述第一小区的任何移动终端之间的通信而构造的一个或多个无线电帧以及为所述第二小区之间的通信而构造的一个或多个无线电帧 并且通过定义具有一个或多个操作参数的不同的信道配置集来区分第二小区的任何移动终端,其中参数包括训练序列,扩展码和信道观察窗口位置。
    • 10. 发明授权
    • Method and system for interference reduction
    • 减少干扰的方法和系统
    • US08086181B2
    • 2011-12-27
    • US12961741
    • 2010-12-07
    • Daniel WeeHang LiWeidong YangGuanghan Xu
    • Daniel WeeHang LiWeidong YangGuanghan Xu
    • H04B1/00H04B1/38
    • H04W16/18H04B1/7103H04B2201/709709H04J11/005H04J13/16H04W16/10H04W28/18H04W72/00H04W72/08H04W88/08H04W88/12
    • A method and system for interference reduction for telecommunication systems are disclosed. The system comprises a base station control device (BCD) for configuring one or more parameters for operating one or more base stations (BSs), a first BS covering a first cell having one or more mobile terminals therein, a second BS covering a second cell neighboring to the first cell and sharing a predetermined frequency band with the first cell, wherein one or more radio frames constructed for communications between the first BS and any mobile terminal of the first cell and one or more radio frames constructed for communications between the second BS and any mobile terminal of the second cell are distinguishable by defining different channel configuration sets having one or more operation parameters, wherein the parameters includes a training sequence, a spreading code, and a channel observation window position.
    • 公开了用于电信系统的干扰减少的方法和系统。 该系统包括用于配置用于操作一个或多个基站(BS)的一个或多个参数的基站控制设备(BCD),覆盖其中具有一个或多个移动终端的第一小区的第一BS,覆盖第二小区的第二BS 与所述第一小区相邻并且与所述第一小区共享预定频带,其中为所述第一小区和所述第一小区的任何移动终端之间的通信而构造的一个或多个无线电帧以及为所述第二小区之间的通信而构造的一个或多个无线电帧 并且通过定义具有一个或多个操作参数的不同的信道配置集来区分第二小区的任何移动终端,其中参数包括训练序列,扩展码和信道观察窗口位置。