公开(公告)号：US20080037508A1

公开(公告)日：2008-02-14

申请号：US11708734

申请日：2007-02-21

申请人： Yanxin Na ,  Hang Jin ,  Daniel Wee ,  Bror Peterson

发明人： Yanxin Na ,  Hang Jin ,  Daniel Wee ,  Bror Peterson

IPC分类号： H04B7/212

CPC分类号： H04W56/008

摘要： A method for determining timing positions in a wireless communications system comprises creating a time-domain timing detection window from a preamble of a receiving signal, generating a first vector of correlations between sampling points in the time-domain timing detection window and sampling points of a known preamble, identifying a pivot position from the largest correlation value of the first vector and generating second vectors based on the pivot position, generating a third vector comprising the largest elements of the second vectors; generating a fourth vector comprising sums of elements in the second vectors, generating fifth and sixth vectors comprising a sum of subsets of the third and fourth vectors, respectively, calculating a seventh vector using the fifth and sixth vectors according to a predetermined equation, and selecting an index of one element from the fifth and seventh vectors to be the timing position according to a predetermined rule.

摘要翻译： 一种用于确定无线通信系统中的定时位置的方法包括：从接收信号的前导码创建时域定时检测窗口，产生时域定时检测窗口中的采样点之间的第一相关矢量，以及 根据所述第一矢量的最大相关值识别枢轴位置，并且基于所述枢轴位置生成第二矢量，生成包括所述第二矢量的最大元素的第三矢量; 生成包括第二向量中的元素之和的第四矢量，分别产生包括第三和第四矢量的子集合的第五和第六矢量，根据预定方程式使用第五和第六矢量来计算第七矢量，以及选择 根据预定规则，从第五和第七向量的一个元素的索引为定时位置。

公开(公告)号：US07876863B2

公开(公告)日：2011-01-25

申请号：US11708734

申请日：2007-02-21

申请人： Yanxin Na ,  Hang Jin ,  Daniel Wee ,  Bror Peterson

发明人： Yanxin Na ,  Hang Jin ,  Daniel Wee ,  Bror Peterson

IPC分类号： H03D1/00

CPC分类号： H04W56/008

摘要： A method for determining timing positions in a wireless communications system comprises creating a time-domain timing detection window from a preamble of a receiving signal, generating a first vector of correlations between sampling points in the time-domain timing detection window and sampling points of a known preamble, identifying a pivot position from the largest correlation value of the first vector and generating second vectors based on the pivot position, generating a third vector comprising the largest elements of the second vectors; generating a fourth vector comprising sums of elements in the second vectors, generating fifth and sixth vectors comprising a sum of subsets of the third and fourth vectors, respectively, calculating a seventh vector using the fifth and sixth vectors according to a predetermined equation, and selecting an index of one element from the fifth and seventh vectors to be the timing position according to a predetermined rule.

摘要翻译： 一种用于确定无线通信系统中的定时位置的方法包括：从接收信号的前导码创建时域定时检测窗口，产生时域定时检测窗口中的采样点之间的第一相关矢量，以及 根据所述第一矢量的最大相关值识别枢轴位置，并且基于所述枢轴位置生成第二矢量，生成包括所述第二矢量的最大元素的第三矢量; 生成包括第二向量中的元素和的第四矢量，分别生成包括第三和第四矢量的子集合的第五和第六矢量，根据预定方程式使用第五和第六矢量来计算第七矢量，以及选择 根据预定规则，从第五和第七向量的一个元素的索引为定时位置。

公开(公告)号：US08218677B2

公开(公告)日：2012-07-10

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：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：US08416802B2

公开(公告)日：2013-04-09

申请号：US12337210

申请日：2008-12-17

申请人： Hang Jin ,  John Grabner ,  Daniel Wee

发明人： Hang Jin ,  John Grabner ,  Daniel Wee

IPC分类号： H04J3/00

CPC分类号： H04W72/005

摘要： Techniques are provided herein to segment subcarriers for broadcast transmission to one or more mobile stations. A broadcast message to be transmitted from a first device is generated. The broadcast message comprises a plurality of symbols and each symbol is to be transmitted at a different one of a plurality of frequency subcarriers. The plurality of subcarriers is divided into groups and each group of subcarriers is assigned to a corresponding one of a plurality of antennas of the first device. The groups of subcarriers are transmitted from corresponding ones of the plurality of antennas.

摘要翻译： 本文提供技术来分段用于广播传输到一个或多个移动台的副载波。 产生要从第一设备发送的广播消息。 广播消息包括多个符号，并且每个符号将在多个频率子载波中的不同的一个发送。 多个子载波被分成组，并且每个子载波组被分配给第一设备的多个天线中的对应的一个。 从多个天线中的相应的天线发送子载波组。

公开(公告)号：US08249509B2

公开(公告)日：2012-08-21

申请号：US12276518

申请日：2008-11-24

申请人： Genyuan Wang ,  Hang Jin ,  Allaukik Abhishek ,  Daniel Wee

发明人： Genyuan Wang ,  Hang Jin ,  Allaukik Abhishek ,  Daniel Wee

IPC分类号： H04B17/00

CPC分类号： H04L25/0232 ,  H04L25/022 ,  H04L25/024 ,  H04L27/2647

摘要： A dynamically adaptive channel estimation process is provided for use in a wireless communication device. At a first device, a wireless transmission is received from a second device. The transmission comprises a plurality of successive symbols each of which comprises a plurality of subcarriers. The first device is configured to compute channel characterizing information for a wireless channel between the first device and the second device based on the received values at subcarriers of the successive symbols. The first device is configured to select one of a plurality of channel estimation schemes based on the channel characterizing information, and to compute an estimate of channel information for the wireless channel using the selected one of the plurality of channel estimation schemes.

摘要翻译： 提供了一种在无线通信设备中使用的动态自适应信道估计过程。 在第一设备处，从第二设备接收无线传输。 传输包括多个连续符号，每个符号包括多个子载波。 第一设备被配置为基于在连续符号的子载波处的接收值来计算第一设备和第二设备之间的无线信道的信道特征信息。 第一设备被配置为基于信道特征信息来选择多个信道估计方案之一，并且使用多个信道估计方案中的所选择的一个来计算无线信道的信道信息的估计。

公开(公告)号：US08611901B2

公开(公告)日：2013-12-17

申请号：US12952417

申请日：2010-11-23

申请人： Rajesh Pazhyannur ,  Mark Grayson ,  Allaukik Abhishek ,  Daniel Wee ,  Santhalingam Balasekar ,  Hang Jin

发明人： Rajesh Pazhyannur ,  Mark Grayson ,  Allaukik Abhishek ,  Daniel Wee ,  Santhalingam Balasekar ,  Hang Jin

IPC分类号： H04Q7/20

CPC分类号： H04W36/08

摘要： Techniques are provided for transmitting and receiving communications on behalf of wireless user equipment devices between a plurality of radio access point (RAP) devices and a gateway apparatus through a controller apparatus. A controller apparatus generates a plurality of first identifiers used for communications on behalf of corresponding wireless user devices between the controller apparatus and respective RAPs. Each first identifier identifies a wireless user device and a RAP to which the wireless user device is associated. The controller apparatus maps each first identifier to a corresponding one of a plurality of second identifiers for communications exchanged on behalf of the wireless user devices between the controller apparatus and a gateway apparatus in the wireless cellular communication network. The controller apparatus remaps a new first identifier to an existing second identifier when a particular wireless user device has handed over from a first RAP to a second RAP.

摘要翻译： 提供了代表无线用户设备在多个无线接入点（RAP）设备和网关设备之间通过控制器设备发送和接收通信的技术。 控制器装置在控制器装置和相应的RAP之间代表相应的无线用户装置产生用于通信的多个第一标识符。 每个第一标识符标识无线用户设备和无线用户设备所关联的RAP。 控制器设备将每个第一标识符映射到无线蜂窝通信网络中的控制器设备和网关设备之间代表无线用户设备交换的通信的多个第二标识符中的相应一个标识符。 当特定无线用户设备已经从第一RAP切换到第二RAP时，控制器设备将新的第一标识符重新映射到现有的第二标识符。

公开(公告)号：US20070268815A1

公开(公告)日：2007-11-22

申请号：US11651764

申请日：2007-01-10

申请人： Daniel Wee ,  Hang Jin

发明人： Daniel Wee ,  Hang Jin

IPC分类号： H04J11/00

CPC分类号： H04B7/0413 ,  H04B7/0404 ,  H04B7/0842 ,  H04B7/0848 ,  H04L5/0007 ,  H04L27/2601

摘要： The present invention discloses a low-complexity estimation method for obtaining a weighting vector for an antenna system with adaptive phased arrays. A first matrix is generated from a plurality of statistically independent symbols of the receiving signals. The plurality of statistically independent symbols is received from two or more antennas over some period of time without a prior knowledge of the properties of the symbols. A second matrix, which is the covariance matrix of the first matrix, is calculated. Subsequently, a column or row is selected from the second matrix to be the weighting vector for two or more antennas in an adaptive phased array antenna system.

摘要翻译： 本发明公开了一种用于获得具有自适应相控阵列的天线系统的加权矢量的低复杂度估计方法。 从接收信号的多个统计独立符号生成第一矩阵。 在一段时间内从两个或更多个天线接收多个统计学上独立的符号，而没有符号的属性的先前知识。 计算第二矩阵，其是第一矩阵的协方差矩阵。 随后，从第二矩阵中选择列或行作为自适应相控阵天线系统中两个或多个天线的加权向量。

公开(公告)号：US20060199615A1

公开(公告)日：2006-09-07

申请号：US11346762

申请日：2006-02-03

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

发明人： Hang Jin ,  Brian 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： A system and method for generating multiple radiation patterns is disclosed here. 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： 这里公开了一种用于产生多个辐射图案的系统和方法。 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。

公开(公告)号：US20120129525A1

公开(公告)日：2012-05-24

申请号：US12952417

申请日：2010-11-23

申请人： Rajesh Pazhyannur ,  Mark Grayson ,  Allaukik Abhishek ,  Daniel Wee ,  Santhalingam Balasekar ,  Hang Jin

发明人： Rajesh Pazhyannur ,  Mark Grayson ,  Allaukik Abhishek ,  Daniel Wee ,  Santhalingam Balasekar ,  Hang Jin

IPC分类号： H04W36/08

CPC分类号： H04W36/08

摘要： Techniques are provided for transmitting and receiving communications on behalf of wireless user equipment devices between a plurality of radio access point (RAP) devices and a gateway apparatus through a controller apparatus. A controller apparatus generates a plurality of first identifiers used for communications on behalf of corresponding wireless user devices between the controller apparatus and respective RAPs. Each first identifier identifies a wireless user device and a RAP to which the wireless user device is associated. The controller apparatus maps each first identifier to a corresponding one of a plurality of second identifiers for communications exchanged on behalf of the wireless user devices between the controller apparatus and a gateway apparatus in the wireless cellular communication network. The controller apparatus remaps a new first identifier to an existing second identifier when a particular wireless user device has handed over from a first RAP to a second RAP.

摘要翻译： 提供了代表无线用户设备在多个无线接入点（RAP）设备和网关设备之间通过控制器设备发送和接收通信的技术。 控制器装置在控制器装置和相应的RAP之间代表相应的无线用户装置产生用于通信的多个第一标识符。 每个第一标识符标识无线用户设备和无线用户设备所关联的RAP。 控制器设备将每个第一标识符映射到无线蜂窝通信网络中的控制器设备和网关设备之间代表无线用户设备交换的通信的多个第二标识符中的相应一个标识符。 当特定无线用户设备已经从第一RAP切换到第二RAP时，控制器设备将新的第一标识符重新映射到现有的第二标识符。