公开(公告)号：US08634495B2

公开(公告)日：2014-01-21

申请号：US13589511

申请日：2012-08-20

申请人： Haim Harel ,  Phil F. Chen ,  Sherwin J. Wang ,  Eduardo Abreu

发明人： Haim Harel ,  Phil F. Chen ,  Sherwin J. Wang ,  Eduardo Abreu

IPC分类号： H04L27/00

CPC分类号： H04B7/0682 ,  H04B7/0623 ,  H04W52/42

摘要： Communication is performed for a first communication device having a set of antenna elements. A quality-indication signal is received from a second communication device (e.g., a basestation). A complex weighting is calculated based on the quality-indication signal. A pre-transmission signal is modified based on the complex transmit diversity weighting to produce a set of modified-pre-transmission signals, wherein the modifications are symmetric by making approximately half the magnitude of the transmit diversity modification to one signal in a first direction, and approximately half the magnitude of the transmit diversity modification to the other signal in a second direction, opposite the first direction. Each modified pre-transmission signal from the set of modified-pre-transmission signals is uniquely associated with an antenna element from the set of antenna elements. The set of modified-pre-transmission signals is sent from the set of antenna elements to produce a transmitted signal.

摘要翻译： 对具有一组天线元件的第一通信设备执行通信。 从第二通信设备（例如，基站）接收质量指示信号。 基于质量指示信号计算复数加权。 基于复合发射分集加权来修改预发射信号以产生一组修改预传输信号，其中通过使发射分集修改的大致一半在一个第一方向上的一个信号，所述修改是对称的， 以及在与第一方向相反的第二方向上的另一信号的发射分集修改的大约一半的幅度。 来自修改后的预传输信号的每个经修改的预发射信号与天线元件集合中的天线元件唯一地相关联。 经修改的预传输信号的集合从天线元件组发送以产生发射信号。

公开(公告)号：US08249187B2

公开(公告)日：2012-08-21

申请号：US12766725

申请日：2010-04-23

申请人： Haim Harel ,  Phil F. Chen ,  Sherwin J. Wang ,  Eduardo Abreu

发明人： Haim Harel ,  Phil F. Chen ,  Sherwin J. Wang ,  Eduardo Abreu

IPC分类号： H04L27/00

CPC分类号： H04B7/0682 ,  H04B7/0623 ,  H04W52/42

摘要： Communication is performed for a first communication device having a set of antenna elements. A quality-indication signal is received from a second communication device (e.g., a basestation). A complex weighting is calculated based on the quality-indication signal. A pre-transmission signal is modified based on the complex transmit diversity weighting to produce a set of modified-pre-transmission signals, wherein the modifications are symmetric by making approximately half the magnitude of the transmit diversity modification to one signal in a first direction, and approximately half the magnitude of the transmit diversity modification to the other signal in a second direction, opposite the first direction. Each modified pre-transmission signal from the set of modified-pre-transmission signals is uniquely associated with an antenna element from the set of antenna elements. The set of modified-pre-transmission signals is sent from the set of antenna elements to produce a transmitted signal.

摘要翻译： 对具有一组天线元件的第一通信设备执行通信。 从第二通信设备（例如，基站）接收质量指示信号。 基于质量指示信号计算复数加权。 基于复合发射分集加权来修改预发射信号以产生一组修改预传输信号，其中通过使发射分集修改的大致一半在一个第一方向上的一个信号，所述修改是对称的， 以及在与第一方向相反的第二方向上的另一信号的发射分集修改的大约一半的幅度。 来自修改后的预传输信号的每个经修改的预发射信号与天线元件集合中的天线元件唯一地相关联。 经修改的预传输信号的集合从天线元件组发送以产生发射信号。

公开(公告)号：US20120208468A1

公开(公告)日：2012-08-16

申请号：US13398598

申请日：2012-02-16

申请人： Sherwin J. Wang ,  Eduardo Abreu ,  Haim Harel

发明人： Sherwin J. Wang ,  Eduardo Abreu ,  Haim Harel

IPC分类号： H04B7/06 ,  H04W24/00

CPC分类号： H04B7/0673 ,  H04B7/0671 ,  H04B7/0682

摘要： A mobile communications method, device, and system for adjusting a phase parameter in a diversity signal, based at least in part on phase feedback from a base station. While in uplink communication with a base station, a mobile device may receive a phase feedback signal from the base station. The mobile device may calculate a modified value of a phase parameter based on the phase feedback signal in order to transmit diversity signals with a gradual change in phase difference. The modified value may be between a phase parameter value indicated by the base station's phase feedback signal and a phase parameter value initially transmitted by the mobile device.

摘要翻译： 至少部分地基于来自基站的相位反馈来调整分集信号中的相位参数的移动通信方法，设备和系统。 在与基站的上行链路通信中，移动设备可以从基站接收相位反馈信号。 移动设备可以基于相位反馈信号来计算相位参数的修改值，以便以逐渐变化的相位差发送分集信号。 修正值可以在由基站的相位反馈信号指示的相位参数值和由移动设备最初发送的相位参数值之间。

公开(公告)号：US5533063A

公开(公告)日：1996-07-02

申请号：US189959

申请日：1994-01-31

申请人： Sanjit K. Mitra ,  Eduardo Abreu ,  Rossano Marchesani

发明人： Sanjit K. Mitra ,  Eduardo Abreu ,  Rossano Marchesani

IPC分类号： H04L25/03 ,  H03D1/00

CPC分类号： H04L25/03057

摘要： A method and apparatus for shaping the impulse response of a non-minimum phase communications channel, by reversing the CIR without enhancing the noise level using non-causal allpass filters is disclosed. Unstable allpass filters are implemented as stable non-causal filters operating in reversed time to obtain a minimum phase response from a non-minimum phase CIR. The original CIR is estimated using adaptive algorithms, and the coefficients of the allpass filters are taken directly from the estimated CIR. The cascade of the channel and allpass filter has an impulse response that is the approximate time reversed version of the original CIR. A "block" allpass equalizer and an "optimal" allpass equalizer are used in a two-stage filter to increase system performance. Other multiple stage filter configurations are disclosed, which can include use of decision feedback equalizer (DFE) decoders as well as Viterbi decoders. The invention is effective in the case of two-path channels, but can also give satisfactory results when more paths are present. Moreover, the present invention is well suited to "sharpening" the CIR with only minor variations in noise level. A minimum phase desired impulse response (DIR) can be obtained with only a few nonzero samples, leading to a substantial reduction in complexity of the Viterbi algorithm, with only minor variations in the noise level.

摘要翻译： 公开了一种通过使用非因果全通滤波器反转CIR而不增强噪声电平来整形非最小相位通信信道的脉冲响应的方法和装置。 不稳定全通滤波器被实现为稳定的非因果滤波器，其在反向时间内操作以从非最小相位CIR获得最小相位响应。 使用自适应算法估计原始CIR，并且从估计的CIR直接获取全通滤波器的系数。 通道和全通滤波器的级联具有脉冲响应，是原始CIR的大致时间反转版本。 一个“块”全通均衡器和“最优”全通均衡器用于两级过滤器以提高系统性能。 公开了其他多级滤波器配置，其可以包括使用判决反馈均衡器（DFE）解码器以及维特比解码器。 本发明在双路通道的情况下是有效的，但是当存在更多的路径时也可以获得令人满意的结果。 此外，本发明非常适合于仅对噪声水平进行微小变化来“锐化”CIR。 只有少数非零样本可获得最小相位期望脉冲响应（DIR），导致维特比算法的复杂度显着降低，噪声水平只有微小变化。

公开(公告)号：US20120183089A1

公开(公告)日：2012-07-19

申请号：US13430400

申请日：2012-03-26

申请人： Eduardo Abreu ,  Haim Harel ,  Kenneth Kludt ,  Yair Karmi

发明人： Eduardo Abreu ,  Haim Harel ,  Kenneth Kludt ,  Yair Karmi

IPC分类号： H04B7/02 ,  H04L27/04

CPC分类号： H04B7/06 ,  H04B7/0617 ,  H04B7/0619 ,  H04B17/24 ,  H04B17/309 ,  H04B17/382 ,  H04L1/0003 ,  H04L1/0026 ,  H04L1/0027

摘要： A method for modifying a signal transmitted from a mobile communication device comprising by perturbing a transmit diversity parameter from its nominal value by modulating the parameter with respect to the nominal value in a first direction for a first feedback interval and then in a second direction for a second feedback interval, receiving a feedback signal including feedback information relating to the perturbed signal as received at a feedback device, and based at least on the feedback information, adjusting the nominal value of the transmit diversity parameter by increasing, decreasing, or preserving the nominal value.

摘要翻译： 一种用于修改从移动通信设备发送的信号的方法，包括：通过在第一反馈间隔的第一方向调制相对于所述标称值的参数，然后在第二方向上调制参数来扰乱发射分集参数的标称值 第二反馈间隔，接收包括与在反馈设备处接收到的扰动信号相关的反馈信息的反馈信号，并且至少基于反馈信息，通过增加，减少或保持标称值来调整发射分集参数的标称值 值。

公开(公告)号：US08150441B2

公开(公告)日：2012-04-03

申请号：US11592969

申请日：2006-11-06

申请人： Eduardo Abreu ,  Haim Harel ,  Kenneth Kludt ,  Yair Karmi

发明人： Eduardo Abreu ,  Haim Harel ,  Kenneth Kludt ,  Yair Karmi

IPC分类号： H04M1/00

CPC分类号： H04B7/06 ,  H04B7/0617 ,  H04B7/0619 ,  H04B17/24 ,  H04B17/309 ,  H04B17/382 ,  H04L1/0003 ,  H04L1/0026 ,  H04L1/0027

摘要： A feedback signal is received from a feedback communication device. The feedback signal provides feedback information for a signal at a feedback rate. A modifying communication device modifies the signal by adjusting a nominal value of a transmit diversity parameter in accordance with the feedback information at a nominal value adjustment rate. The signal is perturbed according to the adjusted nominal value at a perturbation rate.

摘要翻译： 从反馈通信设备接收反馈信号。 反馈信号以反馈速率为信号提供反馈信息。 修改通信设备通过根据反馈信息以标称值调整率调整发射分集参数的标称值来修改信号。 在扰动率下，信号根据调整后的标称值进行扰动。

公开(公告)号：US20110281610A1

公开(公告)日：2011-11-17

申请号：US13104749

申请日：2011-05-10

申请人： Eduardo Abreu ,  Haim Harel

发明人： Eduardo Abreu ,  Haim Harel

IPC分类号： H04B1/02 ,  H04W88/02

CPC分类号： H04B7/0682 ,  H04B7/0404

摘要： A mobile communication device and a method of controlling same, in which the mobile communication device transmits a plurality of transmit diversity signals comprising a first transmit signal and a second transmit signal differing at least by values of a transmit diversity parameter, receives a plurality of feedback signals from at least one base station in response to the plurality of transmit diversity signals; and determines a system delay based on detecting that a number of expected feedback signal patterns among the received plurality of feedback signals exceeds a system delay threshold.

摘要翻译： 一种移动通信设备及其控制方法，其中，所述移动通信设备发送包括至少不同于发射分集参数的值的第一发送信号和第二发送信号的多个发送分集信号，接收多个反馈 响应于所述多个发射分集信号来自至少一个基站的信号; 并且基于检测到所接收的多个反馈信号中的多个预期反馈信号模式超过系统延迟阈值来确定系统延迟。

公开(公告)号：US07991365B2

公开(公告)日：2011-08-02

申请号：US11712569

申请日：2007-03-01

申请人： Yair Karmi ,  Eduardo Abreu

发明人： Yair Karmi ,  Eduardo Abreu

IPC分类号： H04B7/02

CPC分类号： H04B7/0615

摘要： A method and apparatus for dynamic adaptation of transmit diversity parameters according to detected dynamics that may be, for example, related to changes in actual propagation and network conditions, and may be referred to as mobility parameters. Mobility parameters may apply to variability in a propagation path due to any conditions. Determination of a mobility parameter may be conducted using one or more of multiple parameters available to the mobile terminal.

摘要翻译： 用于根据检测到的动态特性动态调整发射分集参数的方法和装置，其可以例如与实际传播和网络条件的改变相关，并且可以称为移动性参数。 由于任何条件，移动性参数可能适用于传播路径中的变异性。 可以使用移动终端可用的多个参数中的一个或多个来进行移动性参数的确定。

公开(公告)号：US20080123775A1

公开(公告)日：2008-05-29

申请号：US11592969

申请日：2006-11-06

申请人： Eduardo Abreu ,  Haim Harel ,  Kenneth Kludt ,  Yair Karmi

发明人： Eduardo Abreu ,  Haim Harel ,  Kenneth Kludt ,  Yair Karmi

IPC分类号： H04L27/00

CPC分类号： H04B7/06 ,  H04B7/0617 ,  H04B7/0619 ,  H04B17/24 ,  H04B17/309 ,  H04B17/382 ,  H04L1/0003 ,  H04L1/0026 ,  H04L1/0027

摘要： A feedback signal is received from a feedback communication device. The feedback signal provides feedback information for a signal at a feedback rate. A modifying communication device modifies the signal by adjusting a nominal value of a transmit diversity parameter in accordance with the feedback information at a nominal value adjustment rate. The signal is perturbed according to the adjusted nominal value at a perturbation rate.

摘要翻译： 从反馈通信设备接收反馈信号。 反馈信号以反馈速率为信号提供反馈信息。 修改通信设备通过根据反馈信息以标称值调整率调整发射分集参数的标称值来修改信号。 在扰动率下，信号根据调整后的标称值进行扰动。

公开(公告)号：US08958757B2

公开(公告)日：2015-02-17

申请号：US13104749

申请日：2011-05-10

申请人： Eduardo Abreu ,  Haim Harel

发明人： Eduardo Abreu ,  Haim Harel

IPC分类号： H04B7/06 ,  H04B7/04

CPC分类号： H04B7/0682 ,  H04B7/0404

摘要： A mobile communication device and a method of controlling same, in which the mobile communication device transmits a plurality of transmit diversity signals comprising a first transmit signal and a second transmit signal differing at least by values of a transmit diversity parameter, receives a plurality of feedback signals from at least one base station in response to the plurality of transmit diversity signals; and determines a system delay based on detecting that a number of expected feedback signal patterns among the received plurality of feedback signals exceeds a system delay threshold.

摘要翻译： 一种移动通信设备及其控制方法，其中，所述移动通信设备发送包括至少不同于发射分集参数的值的第一发送信号和第二发送信号的多个发送分集信号，接收多个反馈 响应于所述多个发射分集信号来自至少一个基站的信号; 并且基于检测到所接收的多个反馈信号中的多个预期反馈信号模式超过系统延迟阈值来确定系统延迟。