公开(公告)号：US20070133670A1

公开(公告)日：2007-06-14

申请号：US11635937

申请日：2006-12-08

申请人： Kyu-Min Kang ,  Cheol-Ho Shin ,  Sung-Woo Choi ,  Sang-In Cho ,  Sang-Sung Choi ,  Kwang-Rob Park

发明人： Kyu-Min Kang ,  Cheol-Ho Shin ,  Sung-Woo Choi ,  Sang-In Cho ,  Sang-Sung Choi ,  Kwang-Rob Park

IPC分类号： H03H7/30

CPC分类号： H04L25/03038 ,  H04L2025/03439

摘要： A parallel equalizer for a DS-CDMA UWB system and method thereof are provided. The parallel equalizer includes: a filter block for filtering a training input signal in a ‘training mode’, and filtering the plurality of input signals in parallel in a ‘symbol decision mode’; a symbol decision block for obtaining a symbol error based on a output from the filter block and a training symbol in the ‘training mode’, and estimating a transmission symbol for each of the input signals in the ‘symbol decision mode’, obtaining an error of one among the estimated transmission symbols for a symbol error calculating input signal; and an weight update block for updating a filter tap coefficients of the filter block based on the training input signal or the symbol error calculating input signal and the symbol error and transmitting the updated filter tap coefficients into the filter block.

摘要翻译： 提供了一种用于DS-CDMA UWB系统的并行均衡器及其方法。 并行均衡器包括：滤波器块，用于以“训练模式”对训练输入信号进行滤波，并且以“符号判定模式”并行地对多个输入信号进行滤波; 用于基于来自滤波块的输出和“训练模式”中的训练符号获得符号误差的符号判定块，并且以“符号判定模式”为每个输入信号估计发送符号，获得误差 估计的传输符号中的一个用于符号误差计算输入信号; 以及权重更新块，用于基于训练输入信号或符号误差计算输入信号和符号误差来更新滤波器块的滤波器抽头系数，并将更新的滤波器抽头系数发送到滤波器块。

公开(公告)号：US07945227B2

公开(公告)日：2011-05-17

申请号：US11951392

申请日：2007-12-06

申请人： Kyu-Min Kang ,  Sang-In Cho ,  Sang-Sung Choi

发明人： Kyu-Min Kang ,  Sang-In Cho ,  Sang-Sung Choi

IPC分类号： H04B1/06 ,  H04K3/00

CPC分类号： H03G3/3052

摘要： Provided is an apparatus and method for controlling a voltage gain in an ultra wideband receiving apparatus. The apparatus includes a register for storing an Automatic Gain Control (AGC) value detected in a section where an AGC operation control signal is “ON”; and a voltage gain controller for generating a voltage gain control value by reading the AGC stored in the register during a section where a reception enable signal is “ON”, and transferring the generated voltage gain control value to a voltage gain amplifier.

摘要翻译： 提供一种用于控制超宽带接收装置中的电压增益的装置和方法。 该装置包括用于存储在AGC操作控制信号为“ON”的部分中检测到的自动增益控制（AGC）值的寄存器; 以及电压增益控制器，用于通过在接收使能信号为“接通”的部分期间读取存储在寄存器中的AGC，并将所生成的电压增益控制值传送到电压增益放大器来产生电压增益控制值。

公开(公告)号：US08000397B2

公开(公告)日：2011-08-16

申请号：US12110708

申请日：2008-04-28

申请人： Sang-In Cho ,  Kyu-Min Kang ,  Sang-Sung Choi

发明人： Sang-In Cho ,  Kyu-Min Kang ,  Sang-Sung Choi

IPC分类号： H04L27/28

CPC分类号： H04L27/2656 ,  H04B2001/71563 ,  H04L27/2657 ,  H04L27/2662 ,  H04L27/2675

摘要： Provided is a method and apparatus for acquiring OFDM synchronization even when it fails to detect a plurality of symbols at an initial stage. In the method, a frequency is adjusted to a first frequency band and a cross correlation value between a received preamble symbol and a preset preamble symbol is calculated. When the calculated cross correlation value is larger than a predetermined reference value and is first detected, frequency hopping is performed to receive subsequent symbols and cross correlation values to the subsequent symbols are reexamined. When the reexamined cross correlation value larger than the predetermined reference value is detected, timing synchronization, frequency offset estimation, and frame detection are performed.

摘要翻译： 提供了即使在初始阶段不能检测到多个符号的情况下也可以获取OFDM同步的方法和装置。 在该方法中，将频率调整为第一频带，并且计算所接收的前导码符号和预设前置码符号之间的互相关值。 当所计算的互相关值大于预定参考值并且被首先检测时，执行跳频以接收后续符号，并重新检查对后续符号的互相关值。 当检测到重新检查的大于预定参考值的互相关值时，执行定时同步，频率偏移估计和帧检测。

公开(公告)号：US20090154529A1

公开(公告)日：2009-06-18

申请号：US12110708

申请日：2008-04-28

申请人： Sang-In Cho ,  Kyu-Min Kang ,  Sang-Sung Choi

发明人： Sang-In Cho ,  Kyu-Min Kang ,  Sang-Sung Choi

IPC分类号： H04B1/713

CPC分类号： H04L27/2656 ,  H04B2001/71563 ,  H04L27/2657 ,  H04L27/2662 ,  H04L27/2675

摘要： Provided is a method and apparatus for acquiring OFDM synchronization even when it fails to detect a plurality of symbols at an initial stage. In the method, a frequency is adjusted to a first frequency band and a cross correlation value between a received preamble symbol and a preset preamble symbol is calculated. When the calculated cross correlation value is larger than a predetermined reference value and is first detected, frequency hopping is performed to receive subsequent symbols and cross correlation values to the subsequent symbols are reexamined. When the reexamined cross correlation value larger than the predetermined reference value is detected, timing synchronization, frequency offset estimation, and frame detection are performed.

摘要翻译： 提供了即使在初始阶段不能检测到多个符号的情况下也可以获取OFDM同步的方法和装置。 在该方法中，将频率调整为第一频带，并且计算所接收的前导码符号和预设前置码符号之间的互相关值。 当所计算的互相关值大于预定参考值并且被首先检测时，执行跳频以接收后续符号，并重新检查对后续符号的互相关值。 当检测到重新检查的大于预定参考值的互相关值时，执行定时同步，频率偏移估计和帧检测。

公开(公告)号：US08045448B2

公开(公告)日：2011-10-25

申请号：US12189931

申请日：2008-08-12

申请人： Kyu-Min Kang ,  Sang-In Cho ,  Sangsung Choi

发明人： Kyu-Min Kang ,  Sang-In Cho ,  Sangsung Choi

IPC分类号： H04J11/00

CPC分类号： H04L27/2647

摘要： Provided is an apparatus and method for detecting a packet of a zero-padded OFDM signal, which are capable of determining if a packet exists in a reception (RX) signal by comparing a cross-correlation value of an OFDM signal delayed by a predetermined sample time, e.g., a zero-padded sample time, with a power value of the RX signal, thereby increasing a packet detection probability and preventing a false alarm. The packet detecting apparatus includes: a cross-correlation calculator for calculating a cross-correlation value of a reception signal received from the outside and delaying the calculated cross-correlation value by a predetermined sample time; a power calculator for calculating a power value of the reception signal; and a packet detector for determining if a packet exists in the reception signal by comparing the delayed cross-correlation value with the calculated power value, and detecting the corresponding packet.

摘要翻译： 提供了一种检测零填充OFDM信号的分组的装置和方法，其能够通过比较延迟了预定样本的OFDM信号的互相关值来确定在接收（RX）信号中是否存在分组 时间，例如零填充采样时间，具有RX信号的功率值，从而增加分组检测概率并防止误报。 分组检测装置包括：互相关计算器，用于计算从外部接收的接收信号的互相关值，并将所计算的互相关值延迟预定采样时间; 功率计算器，用于计算接收信号的功率值; 以及分组检测器，用于通过将延迟的互相关值与所计算的功率值进行比较来确定接收信号中是否存在分组，并检测相应的分组。

公开(公告)号：US20130165136A1

公开(公告)日：2013-06-27

申请号：US13821736

申请日：2011-09-09

申请人： Kyu-Min Kang ,  Sang-In Cho ,  Hyunduk Kang ,  Heon-Jin Hong ,  Chang-Joo Kim

发明人： Kyu-Min Kang ,  Sang-In Cho ,  Hyunduk Kang ,  Heon-Jin Hong ,  Chang-Joo Kim

IPC分类号： H04W16/14

CPC分类号： H04W16/14

摘要： The present invention relates to a system and method for managing resources, which involve managing a plurality of frequency resources in a communication system including a plurality of systems not having rights to use a first frequency band. The system and method of the present invention involve: defining, upon the detection of a frequency band available to the plurality of systems from the first frequency band, an interface between objects in the available frequency band so as to enable coexistence and frequency-sharing among the plurality of systems in the available frequency band; defining a primitive of a service access point (SAP) which supports the transceiving of information belonging to the plurality of systems between the objects through the interface; enabling the objects to transceive information belonging to the plurality of systems through the interface using the primitive of the service access point; and enabling the plurality of systems to coexist and share a frequency in the available frequency band to use the available frequency band by transceiving the information belonging to the plurality of systems.

摘要翻译： 本发明涉及一种用于管理资源的系统和方法，其涉及在包括不具有使用第一频带的权利的多个系统的通信系统中管理多个频率资源。 本发明的系统和方法包括：在检测到来自第一频带的多个系统可用的频带时，定义可用频带中的对象之间的接口，以便能够在可用频带内的共享和频率共享 在可用频带中的多个系统; 定义服务接入点（SAP）的原语，其支持通过接口在对象之间收集属于所述多个系统的信息; 使所述对象能够使用所述服务接入点的原语通过所述接口收发属于所述多个系统的信息; 并且使得所述多个系统能够共享和共享可用频带中的频率，以通过收发属于所述多个系统的信息来使用所述可用频带。

公开(公告)号：US20050009490A1

公开(公告)日：2005-01-13

申请号：US10841591

申请日：2004-05-06

申请人： Hyung-Soo Lee ,  Sang-In Cho ,  Kyu-Min Kang ,  Chang-Joo Kim

发明人： Hyung-Soo Lee ,  Sang-In Cho ,  Kyu-Min Kang ,  Chang-Joo Kim

IPC分类号： H04B7/26 ,  H03G3/30 ,  H04B1/69 ,  H04B7/005 ,  H03F3/45

CPC分类号： H04W52/52 ,  H03G3/3052 ,  H03G2201/103 ,  H03G2201/502 ,  H03G2201/702 ,  H04B1/71637

摘要： Disclosed is a method for controlling power level of received signal in an ultra wide band transmission system which uses multi frequency bands, and includes a pre-gain controller (PGC) and a voltage gain amplifier (VGA). The method for controlling a power level of a received signal includes the steps of: a) at the PGCs, detecting which multi frequency band is used in a transmitter of the transmission system; b) at the PGCs, obtaining the voltage gain owing to the discrepancy in the power levels of the received signals; and c) at the PGCs, compensating for the power loss based on the voltage gain.

摘要翻译： 公开了一种在使用多频带的超宽带传输系统中控制接收信号的功率电平的方法，包括预增益控制器（PGC）和电压增益放大器（VGA）。 用于控制接收信号的功率电平的方法包括以下步骤：a）在PGC检测在传输系统的发射机中使用哪个多频带; b）在PGC处，由于接收到的信号的功率电平的差异而获得电压增益; 和c）在PGC处，基于电压增益来补偿功率损耗。

公开(公告)号：US08503955B2

公开(公告)日：2013-08-06

申请号：US12839733

申请日：2010-07-20

申请人： Kyu-Min Kang ,  Sang-In Cho ,  Heon-Jin Hong

发明人： Kyu-Min Kang ,  Sang-In Cho ,  Heon-Jin Hong

IPC分类号： H04B1/16

CPC分类号： H04B1/1027

摘要： An apparatus for detecting a signal in a common frequency band includes: a signal processor configured to extract a selected band signal from received wireless signals by filtering the received wireless signal based on a frequency selection control signal, convert the extracted signal to a baseband signal, and detect a predetermined signal; a sensing signal determiner configured to determine existence of the signal, output a determination result, and outputs a frequency selection generating signal when the predetermined signal is absent; and a frequency selection controller configured to output the frequency selection control signal by selecting a target band among a plurality of previously decided bands.

摘要翻译： 用于检测公共频带中的信号的装置包括：信号处理器，被配置为基于频率选择控制信号对所接收的无线信号进行滤波，从接收到的无线信号中提取所选频带信号，将提取的信号转换为基带信号， 并检测预定信号; 感测信号确定器，被配置为确定信号的存在，输出确定结果，并且当所述预定信号不存在时，输出频率选择产生信号; 以及频率选择控制器，被配置为通过在多个先前确定的频带中选择目标频带来输出频率选择控制信号。

公开(公告)号：US20110151812A1

公开(公告)日：2011-06-23

申请号：US12839733

申请日：2010-07-20

申请人： Kyu-Min KANG ,  Sang-In Cho ,  Heon-Jin Hong

发明人： Kyu-Min KANG ,  Sang-In Cho ,  Heon-Jin Hong

IPC分类号： H04B1/18

CPC分类号： H04B1/1027

摘要： An apparatus for detecting a signal in a common frequency band includes: a signal processor configured to extract a selected band signal from received wireless signals by filtering the received wireless signal based on a frequency selection control signal, convert the extracted signal to a baseband signal, and detect a predetermined signal; a sensing signal determiner configured to determine existence of the signal, output a determination result, and outputs a frequency selection generating signal when the predetermined signal is absent; and a frequency selection controller configured to output the frequency selection control signal by selecting a target band among a plurality of previously decided bands.

摘要翻译： 用于检测公共频带中的信号的装置包括：信号处理器，被配置为基于频率选择控制信号对所接收的无线信号进行滤波，从接收到的无线信号中提取所选频带信号，将提取的信号转换为基带信号， 并检测预定信号; 感测信号确定器，被配置为确定信号的存在，输出确定结果，并且当所述预定信号不存在时，输出频率选择产生信号; 以及频率选择控制器，被配置为通过在多个先前确定的频带中选择目标频带来输出频率选择控制信号。

公开(公告)号：US20090147667A1

公开(公告)日：2009-06-11

申请号：US12189931

申请日：2008-08-12

申请人： Kyu-Min KANG ,  Sang-In Cho ,  Sangsung Choi

发明人： Kyu-Min KANG ,  Sang-In Cho ,  Sangsung Choi

IPC分类号： H04J11/00

CPC分类号： H04L27/2647

摘要： Provided is an apparatus and method for detecting a packet of a zero-padded OFDM signal, which are capable of determining if a packet exists in a reception (RX) signal by comparing a cross-correlation value of an OFDM signal delayed by a predetermined sample time, e.g., a zero-padded sample time, with a power value of the RX signal, thereby increasing a packet detection probability and preventing a false alarm. The packet detecting apparatus includes: a cross-correlation calculator for calculating a cross-correlation value of a reception signal received from the outside and delaying the calculated cross-correlation value by a predetermined sample time; a power calculator for calculating a power value of the reception signal; and a packet detector for determining if a packet exists in the reception signal by comparing the delayed cross-correlation value with the calculated power value, and detecting the corresponding packet.

摘要翻译： 提供了一种检测零填充OFDM信号的分组的装置和方法，其能够通过比较延迟了预定样本的OFDM信号的互相关值来确定在接收（RX）信号中是否存在分组 时间，例如零填充采样时间，具有RX信号的功率值，从而增加分组检测概率并防止误报。 分组检测装置包括：互相关计算器，用于计算从外部接收的接收信号的互相关值，并将所计算的互相关值延迟预定采样时间; 功率计算器，用于计算接收信号的功率值; 以及分组检测器，用于通过将延迟的互相关值与所计算的功率值进行比较来确定接收信号中是否存在分组，并检测相应的分组。