公开(公告)号：US07554902B2

公开(公告)日：2009-06-30

申请号：US10420693

申请日：2003-04-23

申请人： Ki-yun Kim ,  Ho Kim ,  Hyung-jin Choi

发明人： Ki-yun Kim ,  Ho Kim ,  Hyung-jin Choi

IPC分类号： H04J11/00

CPC分类号： H04L27/2607 ,  H04L27/2657 ,  H04L27/2675

摘要： Provided is a transmission data frame in an orthogonal frequency division multiplexing (OFDM) burst mode transmission, and more particularly, a frequency offset estimating method and a channel equalizing method using a transmission data frame. In the transmission data frame used in the orthogonal frequency division multiplexing burst mode transmission, a length of a guard interval in a preamble area for frequency offset estimation and channel estimation varies depending on a channel environment not being limited in consideration of a size of a data symbol, and only data of ending part of the guard interval in the preamble is used to estimate frequency offset in consideration of intersymbol interference. In the frequency offset estimating method, desired frequency estimation efficiency can be satisfied with the small number of samples. Also, when channel equalization is performed, two symbols are averaged in a time area to reduce the accuracy of channel estimation due to Gaussian random noise. In a frequency area, by referring to weight placed on an adjacent subcarrier, a channel equalization coefficient is obtained to efficiently reduce Gaussian random noise.

摘要翻译： 提供了正交频分复用（OFDM）突发模式传输中的发送数据帧，更具体地，使用使用发送数据帧的频率偏移估计方法和信道均衡方法。 在正交频分复用突发模式传输中使用的发送数据帧中，用于频偏估计和信道估计的前同步码区域中的保护间隔的长度根据不受数据大小限制的信道环境而变化 符号，并且仅使用前导码中的保护间隔的结束部分的数据来估计考虑码间干扰的频率偏移。 在频率偏移估计方法中，可以利用少量样本来满足期望的频率估计效率。 此外，当执行信道均衡时，在时间区域中平均两个符号以降低由于高斯随机噪声导致的信道估计的准确度。 在频率区域中，通过参考相邻子载波上的权重，获得信道均衡系数以有效地降低高斯随机噪声。

公开(公告)号：US20060164970A1

公开(公告)日：2006-07-27

申请号：US11063125

申请日：2005-02-22

申请人： Kyu-Ha Lee ,  Sung-Hun Jung ,  Dae-Sik Hong ,  Eun-Seok Ko ,  Jae-Hee Cho

发明人： Kyu-Ha Lee ,  Sung-Hun Jung ,  Dae-Sik Hong ,  Eun-Seok Ko ,  Jae-Hee Cho

IPC分类号： H04J11/00 ,  H04J3/02

CPC分类号： H04B7/0891 ,  H04B7/06 ,  H04L27/2608

摘要： A transmitter of a Diagonal Bell Laboratories Layered Space-Time (DBLAST) system includes an interleaver for performing interleaving for all sub-streams in a stream of a transmission signal, thereby generating an interleaved signal, a symbol repeater for generating a reverse-arranged signal rearranged in a reverse order to the interleaved signal, and a DBLAST transmit unit for transmitting the interleaved signal and the reverse-arranged signal through multiple transmit antennas. A receiver of a DBLAST system includes a DBLAST receive unit for receiving signals through multiple transmit antennas, a repeating symbol combiner for generating a combined signal; a deinterleaver for generating a deinterleaved signal; and a decoder for decoding the deinterleaved signal.

摘要翻译： 对角贝尔实验室分层时空（DBLAST）系统的发射机包括交织器，用于对传输信号的流中的所有子流执行交织，从而产生交织的信号，用于产生反向排列的信号的符号中继器 以与交错信号相反的顺序重新排列，以及DBLAST发送单元，用于通过多个发送天线发送交织信号和反向排列的信号。 DBLAST系统的接收机包括用于通过多个发射天线接收信号的DBLAST接收单元，用于产生组合信号的重复符号组合器; 用于产生解交织信号的解交织器; 以及用于对解交错信号进行解码的解码器。

公开(公告)号：US20020087288A1

公开(公告)日：2002-07-04

申请号：US09935742

申请日：2001-08-23

申请人： SAMSUNG THALES CO., LTD.

发明人： Yong Tea Kim

IPC分类号： G01C009/00

CPC分类号： G01D5/2073

摘要： Disclosed is an apparatus for measuring an absolute rotation angle and a method thereof. In particular, the apparatus is available for a measurement and servo system in which high precision is required in rotation drive and absolute rotation angle measurement. The apparatus comprises a rotation mechanism having a driver rotating unit connected to a resolver, a driver fixing unit coupled to the driver rotating unit and a sensor for detecting a rotating state of the driver rotating unit; an actuator unit for driving the rotation mechanism in response to a rotation control; a resolver interface for converting a rotation detection signal from the resolver to a digital resolve data; and a controller for providing the rotation control signal to the actuator unit, receives the digital resolver data and the rotation detection signal to set the initial rotation reference position of the rotation mechanism, and compensates a rotation angle when the digital resolver data changes abruptly in respect to the initial rotation reference position to calculate an absolute rotation angle.

摘要翻译： 公开了一种用于测量绝对旋转角度的装置及其方法。 特别地，该装置可用于在旋转驱动和绝对旋转角度测量中需要高精度的测量和伺服系统。 该装置包括旋转机构，其具有连接到旋转变压器的驱动器旋转单元，连接到驱动器旋转单元的驱动器固定单元和用于检测驾驶员旋转单元的旋转状态的传感器; 用于响应旋转控制来驱动旋转机构的致动器单元; 解析器接口，用于将来自旋转变压器的旋转检测信号转换成数字解析数据; 以及用于向所述致动器单元提供所述旋转控制信号的控制器，接收所述数字解析器数据和所述旋转检测信号，以设定所述旋转机构的初始旋转基准位置，并且当所述数字解析器数据突然变化时补偿旋转角度 到初始旋转参考位置以计算绝对旋转角度。

公开(公告)号：US20110054684A1

公开(公告)日：2011-03-03

申请号：US12873606

申请日：2010-09-01

申请人： Beom-Su SEO ,  Sung-Hoon KIM ,  Kyeong-Ho LEE ,  Joong-Bae KIM ,  Myung-Chan ROH ,  Choul-Soo JANG ,  Seung-Woog JUNG ,  Seung-Ik LEE ,  Yoon-Ju LEE ,  Ji-Hung KIM ,  Hyun-Chul PARK ,  Joong-Ki PARK

发明人： Beom-Su SEO ,  Sung-Hoon KIM ,  Kyeong-Ho LEE ,  Joong-Bae KIM ,  Myung-Chan ROH ,  Choul-Soo JANG ,  Seung-Woog JUNG ,  Seung-Ik LEE ,  Yoon-Ju LEE ,  Ji-Hung KIM ,  Hyun-Chul PARK ,  Joong-Ki PARK

IPC分类号： B25J9/16

CPC分类号： G05B19/0421

摘要： In an operating system having a first controller configured to manage one or more robots included in a first region, and a second controller configured to manage one or more robots included in a second region adjacent to the first region, a method for enabling the second controller to acquire an operation right of N robots (where N is a natural number equal to or greater than 1) operated by the first controller, the method includes: transmitting a control mapping status (CMS) containing an operation right change message to the first controller, upon reception of an operation right request signal from a user of the N robots; and checking a connection status of the N robots, upon reception of the CMS containing the operation right change message from the first controller, and acquiring an operation right by providing CMS acquisition information and control mapping information to the robots included in the second region.

摘要翻译： 在具有第一控制器的操作系统中，所述第一控制器被配置为管理包括在第一区域中的一个或多个机器人，以及被配置为管理包括在与所述第一区域相邻的第二区域中的一个或多个机器人的第二控制器， 获取由第一控制器操作的N个机器人（其中N是等于或大于1的自然数）的操作权限，该方法包括：向第一控制器发送包含操作权变更消息的控制映射状态（CMS） 在接收到来自N个机器人的用户的操作权请求信号时; 以及在从所述第一控制器接收到包含所述操作权限改变消息的所述CMS的情况下检查所述N个机器人的连接状态，以及通过向所述第二区域中包括的机器人提供CMS获取信息和控制映射信息来获取操作权限。

公开(公告)号：US06844851B2

公开(公告)日：2005-01-18

申请号：US10259522

申请日：2002-09-30

申请人： Won-Sang Yoon ,  Gennadi Yevtyushkin

发明人： Won-Sang Yoon ,  Gennadi Yevtyushkin

IPC分类号： H01Q13/08 ,  H01Q1/38 ,  H01Q1/52 ,  H01Q9/06 ,  H01Q9/28 ,  H01Q21/00 ,  H01Q21/06 ,  H01Q21/24 ,  H01Q21/26

CPC分类号： H01Q21/062 ,  H01Q1/38 ,  H01Q1/525 ,  H01Q9/065 ,  H01Q9/285 ,  H01Q21/0075 ,  H01Q21/24 ,  H01Q21/26

摘要： An antenna is located at the end of a wireless communication system, or other radio system, and more particularly, a wideband planar antenna with linear and circular polarization uses different polarization for transmission or reception to increase the isolation between the transmission and reception by suggestion and using a type of radiation element. The disclosed antenna is more efficient than other similar antennas that can transmit/receive linear or circular polarization. The disclosed invention makes it possible to pr vide an antenna having dual polarization, which has an orthogonal characteristic in both linear and circular polarization, and which can lower the height of the antenna by embodying a micro strip planar antenna which has linear and circular polarization that has high gain over a wide frequency band, and which transmits/receives linear or circular polarization.

摘要翻译： 天线位于无线通信系统或其他无线电系统的末端，更具体地说，具有线性和圆偏振的宽带平面天线使用不同的极化进行发射或接收，以通过建议和 使用一种类型的辐射元件。 所公开的天线比可以发送/接收线性或圆偏振的其它类似天线更有效。 所公开的发明使得可以提供具有双极化的天线，其具有线性和圆偏振中的正交特性，并且可以通过体现具有线性和圆偏振的微带平面天线来降低天线的高度， 在宽频带上具有高增益，并且其发送/接收线性或圆偏振。

公开(公告)号：US08405552B2

公开(公告)日：2013-03-26

申请号：US11826358

申请日：2007-07-13

申请人： Ki-Hyoung Bae ,  Kun-Woo Kim ,  Hyun-Sik Tae

发明人： Ki-Hyoung Bae ,  Kun-Woo Kim ,  Hyun-Sik Tae

IPC分类号： H01Q1/48

CPC分类号： H01Q1/2208 ,  H01Q1/38 ,  H01Q5/371 ,  H01Q5/385 ,  H01Q15/0093 ,  H01Q19/005

摘要： A multi-resonant broadband antenna constructed with a dielectric substrate; a fractal radiation element having a predetermined fractal grid structure adhered on an upper surface of the dielectric substrate. A feed line adhered on the upper surface of the dielectric substrate feeds the fractal radiation element, and a ground plane positioned on a lower surface of the dielectric substrate opposite to the feed line, is physically separated by the dielectric substrate from the feed line.

摘要翻译： 一种由介质基片构成的多谐振宽带天线; 具有粘附在电介质基板的上表面上的预定分形网格结构的分形辐射元件。 附着在电介质基板的上表面上的馈电线馈送分形辐射元件，并且位于与馈电线相对的电介质基板的下表面上的接地平面通过电介质基板与馈电线物理分离。

公开(公告)号：US07321630B2

公开(公告)日：2008-01-22

申请号：US10692344

申请日：2003-10-24

申请人： Ki-yun Kim ,  Hyung-jin Choi ,  Ho Kim

发明人： Ki-yun Kim ,  Hyung-jin Choi ,  Ho Kim

IPC分类号： H04L27/28 ,  G06F1/02

CPC分类号： H04L27/2657 ,  H04L27/2679

摘要： An approximation method and system for series expansion of functions include the steps and functions, respectively, of: expanding an input function in Taylor series up to an (N−1)-th term; expanding the input function in Taylor series up to the N-th term; multiplying the expanded result up to the (N−1)-th term by a predetermined weight α; combining the expanded result up to the (N−1)-th term, multiplied by α, and the expanded result up to the N-th term; and dividing the combined result by (α+1).

摘要翻译： 函数串联扩展的近似方法和系统分别包括以下步骤和功能：将泰勒级数的输入函数扩展到第（N-1）项; 将泰勒系列中的输入函数扩展到第N个项; 将扩展结果乘以第（N-1）项预定权重α; 将扩展结果与第（N-1）项乘以α乘以扩展结果直到第N个项; 并将组合结果除以（α+ 1）。

公开(公告)号：US07099420B2

公开(公告)日：2006-08-29

申请号：US10227041

申请日：2002-08-23

申请人： Kyu-Ha Lee ,  Chung-Yong Lee

发明人： Kyu-Ha Lee ,  Chung-Yong Lee

IPC分类号： H04B1/10

CPC分类号： H03K5/159 ,  H03H17/0657

摘要： The present invention based on the LUT enables to perform a filtering at a low speed on a place where a high-speed process is necessary. Particularly, the LUT structure having a block structure is advantageous for filtering at a low speed, and for decreasing memory usage. The filter structure proposed by the present invention provides the equivalent performances to those of the traditional ones, yet conducts the filtering on an interpolation process requiring a high-speed process previously at a low speed and at a low power instead. Moreover, compared to the traditional LUT based filter, the present invention provides a new structure with a decreased memory demand. In short, the present invention provides a new filter structure that enables to implement an interpolation filter, a high-speed processor of a sending end in a wireless telecommunication system, with a low complexity and a low power consumption.

公开(公告)号：US20030231053A1

公开(公告)日：2003-12-18

申请号：US10282371

申请日：2002-10-29

申请人： SAMSUNG THALES CO., LTD.

发明人： Jae-Hwan Kim

IPC分类号： H03B001/00

CPC分类号： H03L7/0805 ,  H03J3/20 ,  H03L7/099 ,  H03L7/18

摘要： A tunable filter circuit using a phase locked loop for filtering signals by varying a center frequency of the tunable filter circuit. The tunable filter circuit includes a phase locked loop and a resonance circuit. The phase locked loop includes: a voltage controlled oscillator having a resonance circuit, of which center frequency is varied in correspondence to an inputted control voltage level, for oscillating a frequency signal corresponding to the inputted control voltage level; a PPL controller for generating an error voltage signal corresponding to a phase difference by comparing a reference frequency signal to a signal phase that is oscillated by the voltage controlled oscillator, in correspondence to frequency control data for variably setting a resonance frequency of the voltage controlled oscillator; and a loop filter for loop filtering the error voltage signal and for outputting the loop filtered signal to the voltage controlled oscillator as the control voltage. The resonance circuit has the identical oscillation characteristic with the resonance circuit of the voltage controlled oscillator, and filters and then outputs signals from a wanted frequency band appropriate for a center frequency that varies in accordance with the control voltage level to an inputted signal.

摘要翻译： 一种使用锁相环的可调滤波器电路，用于通过改变可调谐滤波器电路的中心频率对信号进行滤波。 可调谐滤波电路包括锁相环和谐振电路。 锁相环包括：具有谐振电路的压控振荡器，其中心频率对应于输入的控制电压电平而变化，用于振荡与输入的控制电压电平对应的频率信号; PPL控制器，用于通过将参考频率信号与由压控振荡器振荡的信号相位相比较来产生对应于相位差的误差电压信号，该频率控制数据用于可变地设置压控振荡器的谐振频率 ; 以及环路滤波器，用于对误差电压信号进行环路滤波，并将环路滤波信号输出到压控振荡器作为控制电压。 谐振电路与压控振荡器的谐振电路具有相同的振荡特性，并对来自适合于根据控制电压电平变化的中心频率的有用频带的信号输出到输入信号。

公开(公告)号：US20120235851A1

公开(公告)日：2012-09-20

申请号：US13215849

申请日：2011-08-23

申请人： Byung Kwon Park ,  Kuk Ki Im ,  Hyun Chang Ahn

发明人： Byung Kwon Park ,  Kuk Ki Im ,  Hyun Chang Ahn

IPC分类号： G01S13/00

CPC分类号： G01S13/931 ,  G01S7/4026 ,  G01S7/4052 ,  G01S13/34 ,  G01S13/40 ,  G01S2007/403 ,  G01S2007/4034 ,  G01S2007/4091 ,  G01S2013/9321 ,  G01S2013/9375

摘要： A vertical alignment method for a radar of a vehicle includes the steps of radiating radio wave to a forward ground by a radar which is installed on the vehicle; receiving reflected wave which is reflected from the ground; and determining whether or not a vertical misalignment of the radar occurs, based on the reflected wave.

摘要翻译： 用于车辆雷达的垂直对准方法包括以下步骤：通过安装在车辆上的雷达将无线电波辐射到前方; 接收从地面反射的反射波; 并且基于反射波确定是否发生雷达的垂直未对准。