公开(公告)号：US09020020B2

公开(公告)日：2015-04-28

申请号：US13680455

申请日：2012-11-19

Applicant: Broadcom Corporation

Inventor： Chun-Hsuan Kuo

IPC: H04B1/707 ,  H04L25/03 ,  H04L25/08 ,  H04B7/005 ,  H04B7/08

CPC classification number: H04B1/707 ,  H04B1/7103 ,  H04B1/711 ,  H04B7/005 ,  H04B7/0854 ,  H04L25/03987 ,  H04L25/08

Abstract: Disclosed are various embodiments for a symbol level Krylov method equalizer implemented in a wireless communications device. An HSDPA or WCDMA signal is input to the wireless communications device. A conjugate gradient method is applied to symbol-level samples of the signal until a termination condition is met. The termination condition may comprise having zero residual error, residual error below a threshold, or a specified number of iterations. Additionally, a preconditioning matrix may be applied to the inputs of the conjugate gradient method.

Abstract translation: 公开了在无线通信设备中实现的符号级Krylov方法均衡器的各种实施例。 HSDPA或WCDMA信号被输入到无线通信设备。 将共轭梯度方法应用于信号的符号级样本，直到满足终止条件。 终止条件可以包括具有零残余误差，低于阈值的残差或指定次数的迭代。 另外，预处理矩阵可以应用于共轭梯度法的输入。

公开(公告)号：US20130142061A1

公开(公告)日：2013-06-06

申请号：US13645723

申请日：2012-10-05

Applicant: BROADCOM CORPORATION

Inventor： Chun-Hsuan Kuo ,  Li Fung Chang

IPC: H04W74/08 ,  H04W24/00

CPC classification number: H04W52/50 ,  H04W74/004

Abstract: Various embodiments are disclosed for detecting extended acquisition indicators in a wireless communication device. Acquisition indicator (AI) data is received, including an acquisition indicator (AI), a corresponding AI signature, and a corresponding plurality of extended AI indicators (EAI). The device determines whether channel power corresponding to the received AI signature exceeds a first negative limit. The device determines whether a reliability metric of the extended acquisition indicators exceeds a second limit. If the channel power does not exceed the first negative limit and the reliability metric does not exceed the second limit, the device declares the AI to be an indeterminate indicator that denotes neither acknowledgment nor denial of an access request associated with the received AI data.

Abstract translation: 公开了用于检测无线通信设备中的扩展采集指示符的各种实施例。 接收到采集指示符（AI）数据，包括采集指示符（AI），相应的AI签名和相应的多个扩展AI指示符（EAI）。 设备确定对应于所接收的AI签名的信道功率是否超过第一负限制。 设备确定扩展采集指标的可靠性度量是否超过第二限制。 如果信道功率不超过第一负限制，并且可靠性度量不超过第二限制，则设备将AI声明为不表示与所接收的AI数据相关联的接入请求的确认或拒绝的不确定指示符。

公开(公告)号：US08831158B2

公开(公告)日：2014-09-09

申请号：US13625256

申请日：2012-09-24

Applicant: Broadcom Corporation

Inventor： Ari Huostila ,  Chun-Hsuan Kuo

IPC: H04L7/00

CPC classification number: H04B1/7085

Abstract: In one embodiment, a method comprising sampling by a first sampling unit a first signal received via a first antenna; and sampling by a second sampling unit a second signal received via a second antenna, the sampling of the second signal commencing in synchronization with the sampling of the first signal by the first sampling unit based on an accumulated value, the first and second signal sharing common information.

Abstract translation: 在一个实施例中，一种方法包括由第一采样单元对经由第一天线接收的第一信号进行采样; 并且通过第二采样单元对经由第二天线接收的第二信号进行采样，所述第二信号的采样与所述第一采样单元基于累积值的所述第一信号的采样同步地开始，所述第一和第二信号共享公共 信息。

公开(公告)号：US20140140376A1

公开(公告)日：2014-05-22

申请号：US13680455

申请日：2012-11-19

Applicant: BROADCOM CORPORATION

Inventor： Chun-Hsuan Kuo

IPC: H04B1/707

CPC classification number: H04B1/707 ,  H04B1/7103 ,  H04B1/711 ,  H04B7/005 ,  H04B7/0854 ,  H04L25/03987 ,  H04L25/08

Abstract: Disclosed are various embodiments for a symbol level Krylov method equalizer implemented in a wireless communications device. An HSDPA or WCDMA signal is input to the wireless communications device. A conjugate gradient method is applied to symbol-level samples of the signal until a termination condition is met. The termination condition may comprise having zero residual error, residual error below a threshold, or a specified number of iterations. Additionally, a preconditioning matrix may be applied to the inputs of the conjugate gradient method.

Abstract translation: 公开了在无线通信设备中实现的符号级Krylov方法均衡器的各种实施例。 HSDPA或WCDMA信号被输入到无线通信设备。 将共轭梯度方法应用于信号的符号级样本，直到满足终止条件。 终止条件可以包括具有零残余误差，低于阈值的残差或指定次数的迭代。 另外，预处理矩阵可以应用于共轭梯度法的输入。

公开(公告)号：US20130259104A1

公开(公告)日：2013-10-03

申请号：US13625256

申请日：2012-09-24

Applicant: BROADCOM CORPORATION

Inventor： Ari Huostila ,  Chun-Hsuan Kuo

IPC: H04B17/00

CPC classification number: H04B1/7085

Abstract: In one embodiment, a method comprising sampling by a first sampling unit a first signal received via a first antenna; and sampling by a second sampling unit a second signal received via a second antenna, the sampling of the second signal commencing in synchronization with the sampling of the first signal by the first sampling unit based on an accumulated value, the first and second signal sharing common information.

Abstract translation: 在一个实施例中，一种方法包括由第一采样单元对经由第一天线接收的第一信号进行采样; 并且通过第二采样单元对经由第二天线接收的第二信号进行采样，所述第二信号的采样与所述第一采样单元基于累积值的所述第一信号的采样同步地开始，所述第一和第二信号共享公共 信息。

公开(公告)号：US08873420B2

公开(公告)日：2014-10-28

申请号：US13645723

申请日：2012-10-05

Applicant: Broadcom Corporation

Inventor： Chun-Hsuan Kuo ,  Li Fung Chang

IPC: H04L12/26

CPC classification number: H04W52/50 ,  H04W74/004

Abstract: A wireless communication device receives acquisition indicator (AI) data, including an acquisition indicator (AI), a corresponding AI signature, and a corresponding plurality of extended AI indicators (EAI). The device determines whether channel power corresponding to the received AI signature exceeds a first negative limit. The device determines whether a reliability metric of the extended acquisition indicators exceeds a second limit. If the channel power does not exceed the first negative limit and the reliability metric does not exceed the second limit, the device declares the AI to be an indeterminate indicator that denotes neither acknowledgment nor denial of an access request associated with the received AI data.

Abstract translation: 无线通信设备接收包括采集指示符（AI），相应的AI签名和对应的多个扩展AI指示符（EAI）的获取指示符（AI）数据。 设备确定对应于所接收的AI签名的信道功率是否超过第一负限制。 设备确定扩展采集指标的可靠性度量是否超过第二限制。 如果信道功率不超过第一负限制，并且可靠性度量不超过第二限制，则设备将AI声明为不表示与所接收的AI数据相关联的接入请求的确认或拒绝的不确定指示符。

公开(公告)号：US20130143577A1

公开(公告)日：2013-06-06

申请号：US13680495

申请日：2012-11-19

Applicant: Broadcom Corporation

Inventor： Fu-Hsuan Chiu ,  Hongwei Kong ,  Chun-Hsuan Kuo ,  Severine Catreux ,  Oghenekome Oteri

IPC: H04W36/18

CPC classification number: H04W56/002 ,  H03M13/3723 ,  H03M13/3905 ,  H03M13/3972 ,  H04L1/005 ,  H04W36/18

Abstract: Various methods and systems are provided for frequency offset correction. In one example, among others, a method includes determining a phase estimation of a RF signal, rotating a sample of the RF signal based at least in part upon the phase estimation, and determining a channel estimation based upon the rotated sample. The channel estimation may be derotated based at least in part upon the phase estimation. In another example, a communication device includes a phase rotator configured to rotate RF signal samples based upon a rotation offset, a channel estimation filter configured to determine channel estimates, and a phase derotator configured to rotate the channel estimates based upon another rotation offset. Another example of a communication device includes a differential detector configured to determine conjugate multiply results, an averaging filter configured to sum the results, and a phase estimator configured to determine a phase estimation based upon the sum.

Abstract translation: 为频偏补偿提供了各种方法和系统。 在一个示例中，其中包括确定RF信号的相位估计，至少部分地基于相位估计来旋转RF信号的采样，以及基于旋转的采样来确定信道估计。 至少部分地基于相位估计可以消除信道估计。 在另一示例中，通信设备包括：相位旋转器，被配置为基于旋转偏移来旋转RF信号样本，被配置为确定信道估计的信道估计滤波器，以及被配置为基于另一个旋转偏移旋转信道估计的相位解旋器。 通信设备的另一个例子包括配置成确定共轭乘法结果的差分检测器，被配置为求和结果的平均滤波器以及被配置为基于总和确定相位估计的相位估计器。

公开(公告)号：US20130142238A1

公开(公告)日：2013-06-06

申请号：US13646138

申请日：2012-10-05

Applicant: BROADCOM CORPORATION

Inventor： Chun-Hsuan Kuo

IPC: H04B17/00

CPC classification number: H04W56/002 ,  H03M13/3723 ,  H03M13/3905 ,  H03M13/3972 ,  H04L1/005 ,  H04W36/18

Abstract: Embodiments of the present disclosure prove an apparatus and method for symbol timing tracking. Such embodiments are configured to obtain a sampling time for sampling a signal pulse; generate a symbol value for the sampling time from actual sample values of the signal pulse corresponding to predetermined sampling times by interpolating the symbol value utilizing the predetermined sampling times and the actual sample values, wherein the sampling time is not included as one of the predetermined sampling times; and utilize the symbol value to determine an optimal sampling time for sampling the signal pulse.

Abstract translation: 本公开的实施例证明了用于符号定时跟踪的装置和方法。 这样的实施例被配置为获得用于采样信号脉冲的采样时间; 通过使用预定采样时间和实际采样值内插符号值，从而对与预定采样时间相对应的信号脉冲的实际采样值产生采样时间的符号值，其中采样时间不包括为预定采样之一 次 并利用符号值来确定用于采样信号脉冲的最佳采样时间。