公开(公告)号：US20190076911A1

公开(公告)日：2019-03-14

申请号：US16126924

申请日：2018-09-10

申请人： Chin Hung Chen

发明人： Chin Hung Chen

IPC分类号： B21D53/30 ,  B23P15/00 ,  B60B21/00

摘要： In one aspect, a method for forging a vehicle wheel with three-dimensional features may include steps of utilizing toe-clamps and center collets to reduce chatter marks and the effects of vibrations and harmonics; employing a parametric CNC program which allows for feed rates and spindle RPM speeds that are specific to the process of the vehicle wheel design; utilizing end-mills, bull-nose end-mills, ball-mills, chamfer tools, V-tools, custom rivet tools, and other commonly used CNC milling tools to machine the sides of the spokes on the wheels; utilizing a coolant to operate the CNC machine; providing a tool to make the three-dimensional features on the wheel; cleaning the wheel to remove coolant and debris remaining on the wheel; and painting selected areas of the wheel.

公开(公告)号：US20130322508A1

公开(公告)日：2013-12-05

申请号：US13487106

申请日：2012-06-01

申请人： Chin-Hung Chen ,  Ning Zhang

发明人： Chin-Hung Chen ,  Ning Zhang

IPC分类号： H04B7/08 ,  H04B17/00

CPC分类号： H04B7/0814 ,  H04B7/0811

摘要： A fast diversity technique using either an EESM or a capacity computation can determine antenna selection in a wireless communication device. A fast Fourier transform (FFT) for the EESM/capacity computation can be performed with consecutive samples of a single symbol period of a short training field (STF) of a packet received by each antenna. The effective signal-to-noise ratio (SNR) for each antenna can be calculated using the results of the EESM or capacity computation. The antenna with the highest effective SNR is selected.

摘要翻译： 使用EESM或容量计算的快速分集技术可以确定无线通信设备中的天线选择。 可以对每个天线接收的分组的短训练场（STF）的单个符号周期的连续采样来执行用于EESM /容量计算的快速傅里叶变换（FFT）。 可以使用EESM或容量计算的结果来计算每个天线的有效信噪比（SNR）。 选择具有最高有效SNR的天线。

公开(公告)号：US08175538B1

公开(公告)日：2012-05-08

申请号：US12334799

申请日：2008-12-15

申请人： Chin-Hung Chen ,  Ning Zhang

发明人： Chin-Hung Chen ,  Ning Zhang

IPC分类号： H04B1/00

CPC分类号： H04B7/0413 ,  H04B17/12

摘要： In a multiple-input, multiple-output system, the frequency of transmitted signals can be partitioned into some number of frequency bins. During an exchange of sounding signals, a first station can monitor the quality of the signals to select a second station that is qualified to participate in a calibration procedure. The first station can generate a first set of channel characteristics for a particular frequency bin based on the sounding signal it receives from the second station. The first station also receives channel state information from the second station which can be used to generate a second set of channel characteristics for the particular frequency bin. Then, the selected subsets of the first and second sets can be manipulated in order to determine a set of correction values for that frequency bin as well as for other frequency bins.

摘要翻译： 在多输入多输出系统中，发射信号的频率可以分成若干个频率仓。 在交换探测信号期间，第一站可以监视信号的质量以选择有资格参与校准过程的第二站。 第一站可以基于从第二站接收的探测信号，为特定频率仓产生第一组信道特性。 第一站还从第二站接收可用于为特定频率仓产生第二组信道特性的信道状态信息。 然后，可以操纵第一和第二组的选定子集，以便确定该频率仓以及其它频率仓的一组校正值。

公开(公告)号：US20120076234A1

公开(公告)日：2012-03-29

申请号：US13245776

申请日：2011-09-26

申请人： Youhan Kim ,  Ning Zhang ,  Chin-Hung Chen

发明人： Youhan Kim ,  Ning Zhang ,  Chin-Hung Chen

IPC分类号： H04L27/04

CPC分类号： H04B7/0456 ,  H03M13/6312 ,  H04B7/0413 ,  H04L1/0071 ,  H04L1/0606 ,  H04L5/0023 ,  H04L5/0046 ,  H04L5/0064 ,  H04L27/2626 ,  H04L27/2647

摘要： A wireless transmitter can include a plurality of bandwidth modules, each bandwidth module processing data based on a predetermined frequency band. In one embodiment, such a wireless transmitter can include encoding components for receiving transmit data and generating encoded data. A multiple-input multiple-output (MIMO) stream parser can receive the encoded data and generate a plurality of MIMO streams. A first module parser coupled to a first MIMO stream can generate a first plurality of partial MIMO streams. A first bandwidth module can include a first interleaver that interleaves bits of the first partial MIMO stream and generates first interleaved data. A second bandwidth module can include a second interleaver that interleaves bits of the second partial MIMO stream and generates second interleaved data. A first inverse fast Fourier transform (IFFT) unit can combine and process the first and second interleaved data and generate a first transmission MIMO stream.

摘要翻译： 无线发射机可以包括多个带宽模块，每个带宽模块基于预定频带处理数据。 在一个实施例中，这样的无线发射机可以包括用于接收发送数据和生成编码数据的编码组件。 多输入多输出（MIMO）流解析器可以接收编码数据并产生多个MIMO流。 耦合到第一MIMO流的第一模块解析器可以生成第一多个部分MIMO流。 第一带宽模块可以包括交织第一部分MIMO流的比特并产生第一交织数据的第一交织器。 第二带宽模块可以包括交织第二部分MIMO流的比特并产生第二交织数据的第二交织器。 第一逆快速傅里叶变换（IFFT）单元可以组合并处理第一和第二交错数据并生成第一传输MIMO流。

公开(公告)号：US07639750B2

公开(公告)日：2009-12-29

申请号：US11486070

申请日：2006-07-14

申请人： Chin-Hung Chen

发明人： Chin-Hung Chen

IPC分类号： H04K1/10

CPC分类号： H04L27/2679 ,  H04L27/266 ,  H04L27/2695 ,  H04L2025/03414

摘要： A phase tracking device. A sampler samples the received signal according to a sampling frequency correction signal to generate a first signal. A phase de-rotator adjusts the phase of the first signal according to a carrier frequency correction signal to generate a second signal. A fast Fourier transformer performs a fast Fourier transformation on the second signal according to a symbol edge to generate a third signal. An equalizer equalizes the third signal according to the estimated channel to generate an output signal. A selector selects the output signal which meets the predetermined condition. A phase error metric processor generates the correction signals for both sampling clock frequency offset and carrier frequency offset according to the selected sub-carrier indexes and their corresponding phase error metrics and channel estimates.

摘要翻译： 相位跟踪装置。 采样器根据采样频率校正信号对接收到的信号进行采样以产生第一信号。 相位去旋转器根据载波频率校正信号来调节第一信号的相位以产生第二信号。 快速傅立叶变换器根据符号边缘对第二信号执行快速傅里叶变换，以产生第三信号。 均衡器根据估计的信道对第三信号进行均衡以产生输出信号。 选择器选择满足预定条件的输出信号。 相位误差度量处理器根据选择的子载波索引及其对应的相位误差度量和信道估计来产生针对采样时钟频率偏移和载波频率偏移的校正信号。

公开(公告)号：US20080260076A1

公开(公告)日：2008-10-23

申请号：US12118632

申请日：2008-05-09

申请人： Jiun-Yo Lai ,  Jen-Yuan Hsu ,  Chin-Hung Chen ,  Pang-An Ting

发明人： Jiun-Yo Lai ,  Jen-Yuan Hsu ,  Chin-Hung Chen ,  Pang-An Ting

IPC分类号： H04L27/06

CPC分类号： H04L27/2657 ,  H04L27/2675

摘要： In one aspect of the invention, a carrier frequency offset (CFO) estimation method to estimate a CFO value of a received signal is provided, and the method comprises: receiving a preamble signal which includes several non-perfect repeat segments; applying an interpolation procedure to interpolate the perfect repeat point of one segment compared with the next segment or the previous segment; acquiring a delay correlation value based on the two perfect repeat signal segments and estimating the CFO value based on the delay correlation value.

摘要翻译： 在本发明的一个方面，提供了一种用于估计接收信号的CFO值的载波频率偏移（CFO）估计方法，并且该方法包括：接收包括若干非完美重复段的前同步码信号; 应用插值过程来内插与下一个段或先前段相比的一个段的完美重复点; 基于两个完美重复信号段获取延迟相关值，并基于延迟相关值估计CFO值。

公开(公告)号：US20080153444A1

公开(公告)日：2008-06-26

申请号：US11978642

申请日：2007-10-30

申请人： Chin-Hung Chen ,  Jia-Hao Wu ,  Yung-Yih Jian ,  Pang-An Ting

发明人： Chin-Hung Chen ,  Jia-Hao Wu ,  Yung-Yih Jian ,  Pang-An Ting

IPC分类号： H04B1/16

CPC分类号： H04L1/0047

摘要： A hybrid sphere decoding method is disclosed. Received data is processed to obtain preliminary parameters. Mbf layers are determined to use breadth-first search and Mdf layers to use depth-first search. A search process is implemented based on the preliminary parameters, in which Mbf layers are searched using breadth-first search and Mdf layers are searched using depth-first search.

摘要翻译： 公开了一种混合球解码方法。 处理接收到的数据以获得初步参数。 确定层Bb层使用宽度优先搜索和M层df层以使用深度优先搜索。 基于初步参数来实现搜索过程，其中使用宽度优先搜索搜索M层bf层，并且使用深度优先搜索来搜索M层df层。

公开(公告)号：USD875639S1

公开(公告)日：2020-02-18

申请号：US29660020

申请日：2018-08-14

申请人： Chin Hung Chen

设计人： Chin Hung Chen

公开(公告)号：US08755756B1

公开(公告)日：2014-06-17

申请号：US12769536

申请日：2010-04-28

申请人： Ning Zhang ,  David Kuochieh Su ,  William J. McFarland ,  Chin-Hung Chen

发明人： Ning Zhang ,  David Kuochieh Su ,  William J. McFarland ,  Chin-Hung Chen

IPC分类号： H04B1/04

CPC分类号： H04B1/109 ,  H04B1/525

摘要： Various methods and corresponding active interference cancellation units are described. These methods and units can perform active interference cancellation in a system including multiple radios. Notably, signals from a first radio can be received as interference at a second radio. The described methods and units can provide interference conditioning, which manipulates an interference reference of the interference at the first radio to approximate an interference observed at the second radio. After tuning of the interference conditioning, the interference can be removed.

摘要翻译： 描述各种方法和相应的主动干扰消除单元。 这些方法和单元可以在包括多个无线电的系统中执行主动干扰消除。 值得注意的是，来自第一无线电的信号可以作为第二无线电的干扰被接收。 所描述的方法和单元可以提供干扰调节，其处理在第一无线电处的干扰的干扰参考以近似在第二无线电处观察到的干扰。 在调谐干扰调节之后，可以去除干扰。

公开(公告)号：US20140071955A1

公开(公告)日：2014-03-13

申请号：US13615446

申请日：2012-09-13

申请人： Shu Du ,  Zhanfeng Jia ,  Ning Zhang ,  Guido Robert Frederiks ,  Vincent Knowles Jones, IV ,  Sameer Vermani ,  Chin-Hung Chen ,  Rahul Tandra ,  Qinghai Gao ,  Balaji Srinivasan Babu

发明人： Shu Du ,  Zhanfeng Jia ,  Ning Zhang ,  Guido Robert Frederiks ,  Vincent Knowles Jones, IV ,  Sameer Vermani ,  Chin-Hung Chen ,  Rahul Tandra ,  Qinghai Gao ,  Balaji Srinivasan Babu

IPC分类号： H04B7/04

CPC分类号： H04B7/0452 ,  H04B7/0617 ,  H04B7/0626 ,  H04B7/0647 ,  H04L1/0027 ,  H04L5/00 ,  H04L25/0204 ,  H04L25/0224

摘要： A method of performing dynamic sounding in a wireless communication device includes determining whether to perform sounding based on an age of current channel state information (CSI). An achievable throughput can be recorded as a reference throughput after performing the sounding. A current achievable throughput can be compared with the reference throughput. A CSI timestamp can be reset when the current throughput is above the reference throughput by a first predetermined amount, thereby prolonging a lifespan of the current CSI. The CSI timestamp can be reduced when the current throughput is below the reference throughput by a second predetermined amount, thereby reducing the lifespan of the current CSI.

摘要翻译： 在无线通信装置中执行动态声音的方法包括基于当前信道状态信息（CSI）的年龄确定是否执行发声。 执行声音后可以将可实现的吞吐量记录为参考吞吐量。 可以将当前可实现的吞吐量与参考吞吐量进行比较。 当当前吞吐量高于参考吞吐量第一预定量时，可以重置CSI时间戳，从而延长当前CSI的寿命。 当当前吞吐量低于参考吞吐量第二预定量时，可以减少CSI时间戳，从而减少当前CSI的寿命。