公开(公告)号：US07986931B2

公开(公告)日：2011-07-26

申请号：US11736008

申请日：2007-04-17

申请人： Chih-Hung Lin ,  Chin-Fu Li ,  Chia-Jen Yu ,  Jiunn-Tsair Chen

发明人： Chih-Hung Lin ,  Chin-Fu Li ,  Chia-Jen Yu ,  Jiunn-Tsair Chen

IPC分类号： H04B7/00

CPC分类号： G06K7/0008 ,  G06K7/10346

摘要： An echo cancellation circuit for an RFID reader and the method thereof are provided. The echo cancellation circuit includes a gain calculator, a gain adjustment circuit, and a subtraction circuit. The gain calculator provides a complex gain value according to a carrier signal and a received signal through an adaptive algorithm. The gain adjustment circuit is coupled to the gain calculator. The gain adjustment circuit multiplies the carrier signal by the complex gain value, and outputs the result of the multiplication. The subtraction circuit is coupled to the gain adjustment circuit. The subtraction circuit subtracts the output of the gain adjustment circuit from the received signal, and then provides the result of the subtraction as the output signal of the echo cancellation circuit.

摘要翻译： 提供了一种用于RFID读取器的回波消除电路及其方法。 回波消除电路包括增益计算器，增益调整电路和减法电路。 增益计算器通过自适应算法根据载波信号和接收信号提供复数增益值。 增益调整电路耦合到增益计算器。 增益调整电路将载波信号乘以复数增益值，并输出乘法结果。 减法电路耦合到增益调整电路。 减法电路从接收信号中减去增益调整电路的输出，然后将减法结果作为回波消除电路的输出信号。

公开(公告)号：US20100295734A1

公开(公告)日：2010-11-25

申请号：US12614437

申请日：2009-11-08

申请人： Cheng-Hsuan Wu ,  Chin-Tseng Huang ,  Yung-Szu Tu ,  Jiunn-Tsair Chen

发明人： Cheng-Hsuan Wu ,  Chin-Tseng Huang ,  Yung-Szu Tu ,  Jiunn-Tsair Chen

IPC分类号： G01S5/02

CPC分类号： G01S13/876 ,  G01S5/0205

摘要： A method of enhancing accuracy of position estimation for a wireless communication system includes receiving a plurality of input measurements required for estimating a position of a target, and generating a plurality of Gaussian probability density functions corresponding to the plurality of input measurements, the plurality of Gaussian probability density functions being used for estimating the position of the target.

摘要翻译： 一种增强无线通信系统的位置估计精度的方法包括：接收估计目标位置所需的多个输入测量值，以及生成与多个输入测量对应的多个高斯概率密度函数，所述多个高斯 概率密度函数用于估计目标的位置。

公开(公告)号：US20100272198A1

公开(公告)日：2010-10-28

申请号：US12501486

申请日：2009-07-12

申请人： Yung-Szu Tu ,  Jiunn-Tsair Chen ,  Yen-Chin Liao ,  Cheng-Hsuan Wu

发明人： Yung-Szu Tu ,  Jiunn-Tsair Chen ,  Yen-Chin Liao ,  Cheng-Hsuan Wu

IPC分类号： H04L27/28 ,  H04L27/00

CPC分类号： H04L25/0212 ,  H04L25/022 ,  H04L25/0222 ,  H04L25/0224

摘要： A method and related system of transmission channel detection condition in a wireless communication system are disclosed. The method includes receiving a symbol, performing a channel estimation operation to generate a channel estimation result according to the symbol, performing a cross correlation operation on the channel estimation result and an initial channel estimation result to generate an operation result, and determining whether the condition of the transmission channel have changed or not.

摘要翻译： 公开了一种在无线通信系统中的传输信道检测条件的方法和相关系统。 该方法包括接收符号，执行信道估计操作以根据符号生成信道估计结果，对信道估计结果执行互相关操作和初始信道估计结果以产生操作结果，以及确定条件 的传输通道已经改变了。

公开(公告)号：US20100202370A1

公开(公告)日：2010-08-12

申请号：US12486555

申请日：2009-06-17

申请人： YEN CHIN LIAO ,  YUNG SZU TU ,  CHUN HSIEN WEN ,  JIUNN TSAIR CHEN

发明人： YEN CHIN LIAO ,  YUNG SZU TU ,  CHUN HSIEN WEN ,  JIUNN TSAIR CHEN

IPC分类号： H04W72/04

CPC分类号： H04L1/06 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/002

摘要： A method for selecting modulation and coding scheme (MCS) for multi-antenna systems comprises the steps of: a multi-antenna system transmits signals according to MCSs of single spatial stream and determines an MCS accordingly. Subsequently, the multi-antenna system increases the number of the spatial streams applied, transmits signals according to the corresponding MCSs and determines an MCS accordingly until an optimum MCS is found.

摘要翻译： 一种用于选择多天线系统的调制和编码方案（MCS）的方法包括以下步骤：多天线系统根据单个空间流的MCS发送信号，并相应地确定MCS。 随后，多天线系统增加所应用的空间流的数量，根据相应的MCS发送信号，并相应地确定MCS直到找到最佳的MCS。

公开(公告)号：US20100182198A1

公开(公告)日：2010-07-22

申请号：US12499635

申请日：2009-07-08

申请人： Chun Hsien Wen ,  Jiunn Tsair Chen ,  Cheng Hsuan Wu ,  Yen Chin Liao

发明人： Chun Hsien Wen ,  Jiunn Tsair Chen ,  Cheng Hsuan Wu ,  Yen Chin Liao

IPC分类号： H01Q3/00

CPC分类号： H01Q3/2605 ,  H04B7/0617 ,  H04B7/0634 ,  H04B7/0663 ,  H04L25/0248 ,  H04L25/03343 ,  H04L25/03949 ,  H04L25/03961 ,  H04L2025/03802 ,  H04W16/28 ,  H04W24/00

摘要： The method for beamforming in a wireless communication system comprises the steps of: receiving a sounding packet so as to estimate channel state information between a transmitter and a receiver; generating a beamforming matrix in accordance with the channel state information; generating a beamforming steering matrix by multiplying the beamforming matrix by a rotation matrix; and feeding back the beamforming steering matrix.

摘要翻译： 无线通信系统中波束成形的方法包括以下步骤：接收探测分组，以估计发射机与接收机之间的信道状态信息; 根据信道状态信息生成波束成形矩阵; 通过将所述波束形成矩阵乘以旋转矩阵来生成波束成形导引矩阵; 并反馈波束形成导向矩阵。

公开(公告)号：US07733978B2

公开(公告)日：2010-06-08

申请号：US11420482

申请日：2006-05-26

申请人： Chih-Hung Lin ,  Jiunn-Tsair Chen

发明人： Chih-Hung Lin ,  Jiunn-Tsair Chen

IPC分类号： H04K1/02

CPC分类号： H03F1/3247 ,  H03F2201/3233

摘要： A digital adaptive predistorter look up table (DAPD-LUT) technique dynamically adapts a look up table (LUT) an LUT spacing for linearizing a power amplifier (PA). It optimizes the LUT spacing for the PA without prior knowledge of system state information. A size-N LUT divides a whole unsaturated PA input amplitude range into N bins, each predistorted by an entry of the LUT. The LUT is indexed by an input amplitude of a modulated signal via an index mapper to implement an unconditionally non-uniform LUT spacing. A spacing adaptor online interactively adapts the LUT spacing. The adapted LUT spacing balances the inter-modulation distortion (IMD) power at the PA output corresponding to each bin, so that the total IMD power at the PA output is minimized. This dynamically-optimum technique is practical, robust, and with low complexity.

摘要翻译： 数字自适应预失真器查找表（DAPD-LUT）技术动态地将查找表（LUT）用于线性化功率放大器（PA）的LUT间隔。 它优化了PA的LUT间距，而无需系统状态信息的知识。 尺寸N LUT将整个不饱和PA输入幅度范围划分为N个存储区，每个存储块由LUT的条目预失真。 LUT通过索引映射器的调制信号的输入幅度进行索引，以实现无条件不均匀的LUT间隔。 在线间距适配器交互式地适应LUT间隔。 适配的LUT间隔平衡对应于每个仓的PA输出端的互调失真（IMD）功率，使得PA输出端的总IMD功率最小化。 这种动态优化的技术是实用的，稳健的，复杂度低的。

公开(公告)号：US20090262004A1

公开(公告)日：2009-10-22

申请号：US12273080

申请日：2008-11-18

申请人： CHUN HSIEN WEN ,  CHIH KUN CHANG ,  JIUNN TSAIR CHEN

发明人： CHUN HSIEN WEN ,  CHIH KUN CHANG ,  JIUNN TSAIR CHEN

IPC分类号： G01S7/42

CPC分类号： G01S7/021 ,  H04K3/226 ,  H04K3/822 ,  H04K2203/18 ,  H04W16/14 ,  H04W84/12

摘要： A method for detecting radar signals comprises the steps of: receiving signals detected by a master device; receiving signals detected by a slave device; detecting radar pulses from the signals received by the master device; detecting radar pulses from the signals received by the slave device; and determining radar signals by combining the radar pulses detected by the master device and slave device.

摘要翻译： 一种用于检测雷达信号的方法包括以下步骤：接收由主设备检测到的信号; 接收由从设备检测到的信号; 从主设备接收的信号中检测雷达脉冲; 从从设备接收的信号中检测雷达脉冲; 并通过组合由主设备和从设备检测到的雷达脉冲来确定雷达信号。

公开(公告)号：US20090245400A1

公开(公告)日：2009-10-01

申请号：US12362054

申请日：2009-01-29

申请人： Jiunn-Tsair Chen ,  Cheng-Hsuan Wu ,  Yai-Nan Lee

发明人： Jiunn-Tsair Chen ,  Cheng-Hsuan Wu ,  Yai-Nan Lee

IPC分类号： H04L27/28 ,  H04L1/02

CPC分类号： H04L1/0009 ,  H04L1/0015 ,  H04L1/06

摘要： A method that selects an error-correction code for use in a multiple-input multiple output (MIMO) wireless communication system is disclosed that optimizes the performance of the MIMO wireless communication system. The method selects the error-correction code according to at least one system parameter and at least one channel parameter of the MIMO wireless communication system, such that the selected error-correction code matches the hardware configuration and channel setting of the MIMO wireless communication system.

摘要翻译： 公开了一种选择在多输入多输出（MIMO）无线通信系统中使用的纠错码的方法，其优化了MIMO无线通信系统的性能。 该方法根据MIMO无线通信系统的至少一个系统参数和至少一个信道参数选择纠错码，使得所选择的纠错码与MIMO无线通信系统的硬件配置和信道设置相匹配。

公开(公告)号：US20090232068A1

公开(公告)日：2009-09-17

申请号：US12357798

申请日：2009-01-22

申请人： Cheng-Hsuan WU ,  Jiunn-Tsair Chen

发明人： Cheng-Hsuan WU ,  Jiunn-Tsair Chen

IPC分类号： H04W4/00

CPC分类号： H04W72/06 ,  H04W72/0406

摘要： The present invention provides a method for dynamic channel assignment for a wireless communication system. First, a respective channel allocation probability vector at each mobile terminal is randomly generated, and is then sent to the base stations covering the mobile terminal. Subsequently, the channel allocation probability vectors are integrated into channel allocation information for the mobile terminals covered by the base station. Afterwards, based on the channel allocation information, a corresponding channel allocation notice is sent to the mobile terminals covered by the base station, respectively. Finally, according to the channel allocation notice, the channels of the base station are assigned for the mobile terminals covered by the base station.

摘要翻译： 本发明提供了一种用于无线通信系统的动态信道分配的方法。 首先，随机生成各移动终端的各信道分配概率向量，然后发送给覆盖移动终端的基站。 随后，信道分配概率向量被集成到由基站覆盖的移动终端的信道分配信息中。 然后，基于信道分配信息，将相应的信道分配通知分别发送到由基站覆盖的移动终端。 最后，根据信道分配通知，为基站覆盖的移动终端分配基站的信道。

公开(公告)号：US20080143384A1

公开(公告)日：2008-06-19

申请号：US11675087

申请日：2007-02-15

申请人： Chin-Fu Li ,  Chih Hung Lin ,  Jiunn-Tsair Chen

发明人： Chin-Fu Li ,  Chih Hung Lin ,  Jiunn-Tsair Chen

IPC分类号： H03K19/094

CPC分类号： H03K19/09441

摘要： A printed circuit unit implementing with organic transistors is provided. The printed circuit unit includes an input signal circuit, a load circuit and a level shifter. The input signal circuit includes N serially connected organic transistors. When one of the serially connected organic transistors is cut-off, the signal input circuit is cut-off, so that the circuit is maintained to output a correct voltage level. The level shifter circuit includes an organic transistor having a gate for receiving the input signal. The organic transistor can also serve as a load for improving a gain of the level shifter.

摘要翻译： 提供了一种用有机晶体管实现的印刷电路单元。 印刷电路单元包括输入信号电路，负载电路和电平转换器。 输入信号电路包括N个串联连接的有机晶体管。 当串联连接的有机晶体管中的一个截止时，信号输入电路被截止，使得电路被保持以输出正确的电压电平。 电平移位器电路包括具有用于接收输入信号的栅极的有机晶体管。 有机晶体管也可以用作改善电平移位器的增益的负载。