公开(公告)号：US07885619B2

公开(公告)日：2011-02-08

申请号：US11808769

申请日：2007-06-12

申请人： Jung-Fu Cheng ,  Leonid Krasny ,  Rajaram Ramesh

发明人： Jung-Fu Cheng ,  Leonid Krasny ,  Rajaram Ramesh

IPC分类号： H04B7/02 ,  H01Q11/12

CPC分类号： H04B7/0682 ,  H04B7/0404 ,  H04B7/0634

摘要： Diversity radio transmission is accomplished with excellent performance using multiple antennas receiving a transmission signal from a single power amplifier. A data signal to be transmitted is provided to a first antenna, and a phase-shifted version of the data signal is applied a second antenna. The relative phase shift between the data signal transmitted over the two transmit antennas ensures the two antenna signals can be constructively combined at the receiver. In one non-limiting example embodiment, the relative phase shift is determined by processing pilot signals sent along with the data signal and which are transmitted with predetermined phase shifts.

摘要翻译： 使用接收来自单个功率放大器的传输信号的多个天线，以卓越的性能来实现分集无线电传输。 要发送的数据信号被提供给第一天线，并且数据信号的相移版本被应用于第二天线。 通过两个发射天线发射的数据信号之间的相对相移确保了两个天线信号可以在接收机上被建设性地组合。 在一个非限制性示例实施例中，相对相移通过处理与数据信号一起发送并且以预定相移发送的导频信号来确定。

公开(公告)号：US20080311858A1

公开(公告)日：2008-12-18

申请号：US11808769

申请日：2007-06-12

申请人： Jung-Fu Cheng ,  Leonid Krasny ,  Rajaram Ramesh

发明人： Jung-Fu Cheng ,  Leonid Krasny ,  Rajaram Ramesh

IPC分类号： H04B7/02 ,  H04B1/40 ,  H04B7/005

CPC分类号： H04B7/0682 ,  H04B7/0404 ,  H04B7/0634

摘要： Diversity radio transmission is accomplished with excellent performance using multiple antennas receiving a transmission signal from a single power amplifier. A data signal to be transmitted is provided to a first antenna, and a phase-shifted version of the data signal is applied a second antenna. The relative phase shift between the data signal transmitted over the two transmit antennas ensures the two antenna signals can be constructively combined at the receiver. In one non-limiting example embodiment, the relative phase shift is determined by processing pilot signals sent along with the data signal and which are transmitted with predetermined phase shifts.

摘要翻译： 使用接收来自单个功率放大器的传输信号的多个天线，以卓越的性能来实现分集无线电传输。 要发送的数据信号被提供给第一天线，并且数据信号的相移版本被应用于第二天线。 通过两个发射天线发射的数据信号之间的相对相移确保了两个天线信号可以在接收机上被建设性地组合。 在一个非限制性示例实施例中，相对相移通过处理与数据信号一起发送并且以预定相移发送的导频信号来确定。

公开(公告)号：US20050250544A1

公开(公告)日：2005-11-10

申请号：US10841911

申请日：2004-05-07

申请人： Stephen Grant ,  Yi-Pin Wang ,  Rajaram Ramesh ,  Karl Molnar ,  Jung-Fu Cheng ,  Leonid Krasny

发明人： Stephen Grant ,  Yi-Pin Wang ,  Rajaram Ramesh ,  Karl Molnar ,  Jung-Fu Cheng ,  Leonid Krasny

IPC分类号： H04B7/06 ,  H04L1/00 ,  H04L1/06 ,  H04B1/38

CPC分类号： H04L1/0002 ,  H04B7/06 ,  H04B7/061 ,  H04B7/0639 ,  H04B7/0691 ,  H04B7/0697 ,  H04L1/0025 ,  H04L1/0029 ,  H04L1/06 ,  Y02D50/10

摘要： A method is described herein that enables a Selective-Per-Antenna-Rate-Control (S-PARC) technique to be effectively implemented in a wireless communications network (e.g., HSPDA third generation communications network). In one embodiment, the method enables the S-PARC technique to be implemented in the wireless communications network by enabling a mobile terminal device to generate and transmit a “full” feedback signal to a base station that analyzes the “full” feedback signal and determines which mode and transmission rate(s) are going to be used to transmit data substream(s) from selected transmit antenna(s) to the mobile terminal device. In another embodiment, the method enables the S-PARC technique to be implemented in the wireless communications network by enabling a mobile terminal device to generate and transmit a “reduced” feedback signal to a base station that analyzes the “reduced” feedback signal and determines which mode and transmission rate(s) are going to be used to transmit data substream(s) from selected transmit antenna(s) to the mobile terminal device.

摘要翻译： 本文描述了一种能够在无线通信网络（例如，HSPDA第三代通信网络）中有效实现选择性天线速率控制（S-PARC）技术的方法。 在一个实施例中，该方法使得能够在无线通信网络中实现S-PARC技术，使得移动终端设备能够生成并向基站发送“全”反馈信号，分析“完整”反馈信号并确定 哪个模式和传输速率将用于将数据子流从所选择的发射天线传送到移动终端设备。 在另一个实施例中，该方法使得能够在无线通信网络中实现S-PARC技术，使得移动终端设备能够生成并向基站发送“减少”的反馈信号，该基站分析“减少的”反馈信号并确定 哪个模式和传输速率将用于将数据子流从所选择的发射天线传送到移动终端设备。

公开(公告)号：US08670497B2

公开(公告)日：2014-03-11

申请号：US13253412

申请日：2011-10-05

申请人： Stephen J. Grant ,  Leonid Krasny ,  Yi-Pin Eric Wang ,  Karl Molnar ,  Jung-Fu Cheng

发明人： Stephen J. Grant ,  Leonid Krasny ,  Yi-Pin Eric Wang ,  Karl Molnar ,  Jung-Fu Cheng

IPC分类号： H04B7/02

CPC分类号： H04B1/712 ,  H04B1/7103 ,  H04B1/7105 ,  H04B1/71055 ,  H04B1/7107 ,  H04B1/71072 ,  H04B7/04 ,  H04B7/0684 ,  H04B2201/70701 ,  H04B2201/70702 ,  H04B2201/709727 ,  H04L1/0002 ,  H04L1/0009 ,  H04L1/0048 ,  H04L1/18 ,  H04L25/021 ,  H04L25/0224 ,  H04L25/03012 ,  H04L25/03318 ,  H04L25/03331 ,  H04W52/16 ,  H04W52/325 ,  H04W52/346 ,  H04W52/42

摘要： A wireless communication receiver improves signal impairment correlation estimation in MIMO/MISO systems by considering different transmit power allocations and different transmit antenna power distributions in its impairment correlation calculations. The receiver may be implemented in according to a variety of architectures, including, but not limited to, Successive Interference Cancellation (SIC) Generalized RAKE (G-RAKE), Joint Detection (JD) G-RAKE, and Minimum Mean Squared Error (MMSE) G-RAKE. Regardless of the particular receiver architecture adopted, the improved impairment correlations may be used to calculate improved (RAKE) signal combining weights and/or improve channel quality estimates for reporting by receivers operating in Wideband CDMA (W-CDMA) systems transmitting HSDPA channels via MIMO or MISO transmitters. A transmitter may be configured to facilitate impairment correlation determinations by wireless communication receivers operating in MIMO/MISO environments, by signaling one or more values, e.g., data-to-pilot signal transmit power ratios and/or transmit antenna power distributions for the data and pilot signals.

摘要翻译： 无线通信接收机通过在损伤相关计算中考虑不同的发射功率分配和不同的发射天线功率分布来改善MIMO / MISO系统中的信号损害相关估计。 接收机可以根据各种架构来实现，包括但不限于连续干扰消除（SIC）广义RAKE（G-RAKE），联合检测（JD）G-RAKE和最小均方误差（MMSE） ）G-RAKE。 不考虑所采用的特定接收机架构，改进的损害相关可以用于计算改进的（RAKE）信号组合权重和/或改善用于在通过MIMO发送HSDPA信道的宽带CDMA（W-CDMA）系统中操作的接收机报告的信道质量估计 或MISO发射机。 发射机可以被配置为通过信令一个或多个值（例如数据到导频信号发射功率比和/或数据的发射天线功率分布）来促进在MIMO / MISO环境中操作的无线通信接收机的损害相关确定，以及 导频信号。

公开(公告)号：US08442449B2

公开(公告)日：2013-05-14

申请号：US12941114

申请日：2010-11-08

申请人： Dennis Hui ,  Jung-Fu Cheng ,  Kambiz Zangi ,  Leonid Krasny

发明人： Dennis Hui ,  Jung-Fu Cheng ,  Kambiz Zangi ,  Leonid Krasny

IPC分类号： H04B1/00 ,  H04B7/00

CPC分类号： H04B7/0417 ,  H04B7/065 ,  H04B7/0658 ,  H04B7/066 ,  H04B7/0663

摘要： A receiver and a method are described herein for reducing an amount of channel state information related to a transmit channel correlation matrix ΦTX that is feedback to a transmitter. In addition, to a transmitter and a method are described herein for reconstructing the transmit channel correlation matrix φTX using the reduced channel state feedback information received from the receiver.

摘要翻译： 本文描述了一种接收机和方法，用于减少与向发射机反馈的发射信道相关矩阵PhiTX相关的信道状态信息量。 此外，本文描述了一种发射机和方法，用于使用从接收机接收的减少的信道状态反馈信息重建发射信道相关矩阵phiTX。

公开(公告)号：US07912433B2

公开(公告)日：2011-03-22

申请号：US12750793

申请日：2010-03-31

申请人： Karl Molnar ,  Jung-Fu Cheng ,  Stephen J. Grant ,  Leonid Krasny ,  Yi-Pin Eric Wang

发明人： Karl Molnar ,  Jung-Fu Cheng ,  Stephen J. Grant ,  Leonid Krasny ,  Yi-Pin Eric Wang

IPC分类号： H04B17/00

CPC分类号： H04L1/0019 ,  H04B2201/709727 ,  H04L1/0002 ,  H04L1/0026 ,  H04L1/20 ,  H04L25/0202 ,  H04L25/0222 ,  H04L27/2647

摘要： A method and apparatus for generating channel quality information, such as may be used for transmit link adaptation, provide different operating modes, such as a first mode that may be used when propagation channel estimates are not reliable, and a second mode that may be used when the propagation channel estimates are reliable. In one or more embodiments, channel quality information is generated using receiver performance information that characterizes receiver performance in terms of a defined channel quality metric, e.g., supported data rates, for different values of receiver input signal quality over a range of propagation channel realizations. Channel quality information can be generated by selecting channel quality metrics according to receiver input signal quality and a desired probability of meeting a defined performance requirement over a range of propagation channel realizations, or by selecting channel quality metrics according to receiver input signal quality and particularized propagation channel realizations.

摘要翻译： 用于产生信道质量信息的方法和装置，例如可以用于发送链路自适应，提供不同的操作模式，例如当传播信道估计不可靠时可以使用的第一模式，以及可以使用的第二模式 当传播信道估计是可靠的。 在一个或多个实施例中，使用接收机性能信息来生成信道质量信息，所述接收机性能信息根据定义的信道质量度量（例如，支持的数据速率），在传播信道实现范围内针对接收机输入信号质量的不同值来表征接收机性能。 可以通过根据接收机输入信号质量选择信道质量度量并且在传播信道实现范围内满足定义的性能要求的期望概率，或者通过根据接收机输入信号质量和特定传播选择信道质量度量来生成信道质量信息 渠道实现。

公开(公告)号：US20100183064A1

公开(公告)日：2010-07-22

申请号：US12750793

申请日：2010-03-31

申请人： Karl James Molnar ,  Jung-Fu Cheng ,  Stephen J. Grant ,  Leonid Krasny ,  Yi-Pin Eric Wang

发明人： Karl James Molnar ,  Jung-Fu Cheng ,  Stephen J. Grant ,  Leonid Krasny ,  Yi-Pin Eric Wang

IPC分类号： H04B17/00

CPC分类号： H04L1/0019 ,  H04B2201/709727 ,  H04L1/0002 ,  H04L1/0026 ,  H04L1/20 ,  H04L25/0202 ,  H04L25/0222 ,  H04L27/2647

摘要： A method and apparatus for generating channel quality information, such as may be used for transmit link adaptation, provide different operating modes, such as a first mode that may be used when propagation channel estimates are not reliable, and a second mode that may be used when the propagation channel estimates are reliable. In one or more embodiments, channel quality information is generated using receiver performance information that characterizes receiver performance in terms of a defined channel quality metric, e.g., supported data rates, for different values of receiver input signal quality over a range of propagation channel realizations. Channel quality information can be generated by selecting channel quality metrics according to receiver input signal quality and a desired probability of meeting a defined performance requirement over a range of propagation channel realizations, or by selecting channel quality metrics according to receiver input signal quality and particularized propagation channel realizations.

摘要翻译： 用于产生信道质量信息的方法和装置，例如可以用于发送链路自适应，提供不同的操作模式，例如当传播信道估计不可靠时可以使用的第一模式，以及可以使用的第二模式 当传播信道估计是可靠的。 在一个或多个实施例中，使用接收机性能信息来生成信道质量信息，所述接收机性能信息根据定义的信道质量度量（例如，支持的数据速率），在传播信道实现范围内针对接收机输入信号质量的不同值来表征接收机性能。 可以通过根据接收机输入信号质量选择信道质量度量并且在传播信道实现范围内满足定义的性能要求的期望概率，或者通过根据接收机输入信号质量和特定传播选择信道质量度量来生成信道质量信息 渠道实现。

公开(公告)号：US07668227B2

公开(公告)日：2010-02-23

申请号：US11443883

申请日：2006-05-31

申请人： Stephen J. Grant ,  Jung-Fu Cheng ,  Leonid Krasny ,  Karl J. Molnar ,  Yi-Pin Eric Wang

发明人： Stephen J. Grant ,  Jung-Fu Cheng ,  Leonid Krasny ,  Karl J. Molnar ,  Yi-Pin Eric Wang

IPC分类号： H04B1/00

CPC分类号： H04B1/712 ,  H04B1/7103 ,  H04B1/711 ,  H04B7/04 ,  H04B2201/709727

摘要： A receiver reduces interference in a received symbol of interest attributable to an interfering symbol using knowledge of the symbol spreading codes. The receiver comprises a plurality of correlators generating despread values for the received symbol of interest and the interfering symbol, and a combiner to combine the despread values using combining weights calculated based on spreading code correlations between spreading codes for the received symbol of interest and the interfering symbol.

摘要翻译： 接收机使用符号扩展码的知识来减少归因于干扰符号的接收的感兴趣的符号中的干扰。 接收机包括多个相关器，用于产生所接收的感兴趣符号和干扰符号的解扩值，以及组合器，使用基于用于所接收的感兴趣符号的扩展码与干扰信号之间的扩展码相关性计算的组合权重组合去扩展值 符号。

公开(公告)号：US07599698B2

公开(公告)日：2009-10-06

申请号：US10747752

申请日：2003-12-29

申请人： Jung-Fu Cheng ,  Yi-Pin Wang ,  Stephen J. Grant ,  Leonid Krasny ,  Karl J. Molnar

发明人： Jung-Fu Cheng ,  Yi-Pin Wang ,  Stephen J. Grant ,  Leonid Krasny ,  Karl J. Molnar

IPC分类号： H04W72/00

CPC分类号： H04W8/24 ,  H04W24/00

摘要： A method of supplying channel information in a wireless communication system comprises a mobile terminal normally providing a basic channel report to the wireless communication system; the mobile terminal receiving at least one common feedback criterion broadcast to a plurality of mobile terminals; the mobile terminal determining if the mobile terminal satisfies a condition based on the at least one common feedback criterion; and the mobile terminal selectively providing an enhanced channel report to the wireless communication system based on the determining. The basic channel report may comprise information related to a first set of channel parameters, and the enhanced channel report may provide greater detail on the first set of channel parameters and/or relate to a second set of channel parameters. A method of a base station adaptively controlling channel information reporting by broadcast transmitting at least one common feedback criterion is also presented.

摘要翻译： 一种在无线通信系统中提供频道信息的方法包括通常向无线通信系统提供基本频道报告的移动终端; 所述移动终端接收向多个移动终端广播的至少一个公共反馈准则; 所述移动终端基于所述至少一个公共反馈标准来确定所述移动终端是否满足条件; 并且所述移动终端基于所述确定选择性地向所述无线通信系统提供增强的信道报告。 基本信道报告可以包括与第一组信道参数相关的信息，并且增强信道报告可以提供关于第一组信道参数的更多细节和/或涉及第二组信道参数。 还提出了一种通过广播发送至少一个公共反馈标准自适应地控制信道信息报告的基站的方法。

公开(公告)号：US08923110B2

公开(公告)日：2014-12-30

申请号：US12555973

申请日：2009-09-09

申请人： Jung-Fu Cheng ,  Kambiz Zangi ,  Dennis Hui ,  Leonid Krasny

发明人： Jung-Fu Cheng ,  Kambiz Zangi ,  Dennis Hui ,  Leonid Krasny

IPC分类号： H04J11/00 ,  H04B7/02 ,  H04B17/00 ,  H04L1/20 ,  H04L25/02 ,  H04L1/00 ,  H04B7/06

CPC分类号： H04B17/0047 ,  H04B7/024 ,  H04B7/0626 ,  H04B7/0639 ,  H04B17/336 ,  H04B17/364 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0019 ,  H04L1/0026 ,  H04L1/20 ,  H04L25/0212 ,  H04L25/022 ,  H04L25/0224

摘要： Accurate downlink channel estimates are calculated based on infrequently transmitted Channel State Information (CSI) feedback data from a UE 20. A plurality of non-uniformly spaced digital CSI feedback samples, representing the frequency response of a downlink communication channel, is received from the UE. The received CSI feedback samples are demodulated and inverse quantized. A time domain tap delay channel model is generated from the inverse quantized CSI feedback samples. The time domain tap delay channel model may be frequency-transformed to obtain a reconstructed frequency response of the downlink communication channel in the frequency domain. Alternatively, channel delays may be estimated based on prior delays and/or known references signals transmitted on the uplink. Channel estimates between CSI reporting instances may be predicted, such as by a sample & hold or a linear predictor. The delays may be presumed fixed, and Kalman filter coefficients evolved over time.

摘要翻译： 基于来自UE20的不频繁发送的信道状态信息（CSI）反馈数据来计算准确的下行链路信道估计。从UE接收表示下行链路通信信道的频率响应的多个非均匀间隔的数字CSI反馈样本 。 接收的CSI反馈样本被解调和反量化。 时域抽头延迟信道模型是从逆向量化的CSI反馈样本生成的。 时域抽头延迟信道模型可以被频率变换以获得频域中下行链路通信信道的重构频率响应。 或者，可以基于在上行链路上发送的先前的延迟和/或已知的参考信号来估计信道延迟。 可以预测CSI报告实例之间的信道估计，例如通过采样和保持或线性预测器。 可以推测延迟是固定的，并且卡尔曼滤波器系数随时间演化。