专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20070133392A1 Method for adjusting FFT window positioning in MB-OFDM UWB system 失效
标题翻译：在MB-OFDM UWB系统中调整FFT窗口定位的方法
公开(公告)号：US20070133392A1
公开(公告)日：2007-06-14
申请号：US11635272
申请日：2006-12-07
申请人： Cheol-Ho Shin , Sung-Woo Choi , Sang-In Cho , Kyu-Min Kang , Sang-Sung Choi , Kwang-Roh Park
发明人： Cheol-Ho Shin , Sung-Woo Choi , Sang-In Cho , Kyu-Min Kang , Sang-Sung Choi , Kwang-Roh Park
IPC分类号： H04J11/00 , H04J1/00
CPC分类号： H04B1/7183 , H04L27/2605 , H04L27/265 , H04L27/2665
摘要： Provided is a method for adjusting Fast Fourier Transform (FFT) window positioning in a Multi Band Orthogonal Frequency Division Multiplexing Ultra-Wideband (MB-OFDM UWB) system. The method includes the steps of acquiring an initial FFT window position and a frequency hopping position, demodulating a received signal by using the initial FFT window position and the frequency hopping position acquired in the acquiring step, transmitting received data information to a Media Access Control (MAC) layer with a reception frame (RX frame) structure and judging at the MAC layer whether or not a packet error is occurred based on Frame Check Sequences (FCSs), and if no packet error is occurred, returning to the demodulating step, and if the packet error is occurred, changing a register map by using a predetermined interface line in a MAC-physical layer (MAC-PHY) interface to thereby adjust the FFT window position and the frequency hopping position, and then returning to the demodulating step.
摘要翻译：提供了一种用于在多频带正交频分复用超宽带（MB-OFDM UWB）系统中调整快速傅里叶变换（FFT）窗口定位的方法。该方法包括以下步骤：获取初始FFT窗口位置和跳频位置，通过使用在获取步骤中获取的初始FFT窗口位置和跳频位置解调接收信号，将接收的数据信息发送到介质访问控制（ MAC）层，并且在MAC层判断基于帧检查序列（FCS）是否发生分组错误，并且如果没有发生分组错误，则返回到解调步骤，并且如果发生分组错误，则通过使用MAC-物理层（MAC-PHY）接口中的预定接口线来改变寄存器映射，从而调整FFT窗口位置和跳频位置，然后返回到解调步骤。

2. 发明授权

US08009728B2 Parallel equalizer for DS-CDMA UWB system and method thereof 失效
标题翻译： DS-CDMA UWB系统的并行均衡器及其方法
公开(公告)号：US08009728B2
公开(公告)日：2011-08-30
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-Roh Park
发明人： Kyu-Min Kang , Cheol-Ho Shin , Sung-Woo Choi , Sang-In Cho , Sang-Sung Choi , Kwang-Roh 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错误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中。

3. 发明授权

US07660339B2 Apparatus and method for estimating and correcting frequency offset in MB-OFDM UWB system using time frequency hopping 失效
标题翻译：在使用时频跳频的MB-OFDM UWB系统中估计和校正频偏的装置和方法
公开(公告)号：US07660339B2
公开(公告)日：2010-02-09
申请号：US11634006
申请日：2006-12-05
申请人： Cheol-Ho Shin , Sung-Woo Choi , Sang-In Cho , Kyu-Min Kang , Sang-Sung Choi , Kwang-Roh Park
发明人： Cheol-Ho Shin , Sung-Woo Choi , Sang-In Cho , Kyu-Min Kang , Sang-Sung Choi , Kwang-Roh Park
IPC分类号： H04B1/18 , H04B1/00
CPC分类号： H04L27/2657 , H04B1/7143 , H04B1/7163 , H04B2001/7154 , H04L27/2676
摘要： Provided are an apparatus and method for estimating and correcting a frequency offset in a multiband-Orthogonal Frequency Division Multiplexing Ultra-Wideband system using a time frequency hopping. The method includes the steps of: calculating a tangent input having a first value (X) and a second value (Y) by using PS symbols transferred over same frequency band with respect to one of a plurality of frequency bands used for frequency hopping; calculating tan(X/Y) using the first value (X) and the second value (Y), and calculating an index corresponding to the value of tan(X/Y) from a look-up table created by reflecting a relative frequency offset with respect to a center frequency; calculating indexes representing frequency offsets estimated with respect to remaining frequency bands used for frequency hopping from the look-up table by using the calculated index; extracting an index of a numerical controlled oscillator according to correction positions with respect to a plurality of frequency bands by using the calculated indexes; and correcting the frequency offsets estimated using the extracted indexes according to time frequency patterns by using a numerical controlled oscillator table.
摘要翻译：提供了一种用于使用时间跳频估计和校正多频带 - 正交频分复用超宽带系统中的频率偏移的装置和方法。该方法包括以下步骤：通过使用相对于用于跳频的多个频带之一的相同频带传输的PS符号来计算具有第一值（X）和第二值（Y）的切线输入; 使用第一值（X）和第二值（Y）计算tan（X / Y），并且从通过反映相对频率偏移产生的查找表计算与tan（X / Y）的值相对应的指数相对于中心频率; 计算表示使用所计算的索引从查找表中跳频所使用的剩余频带估计的频率偏移的索引; 通过使用计算出的索引，根据关于多个频带的校正位置提取数控振荡器的索引; 以及通过使用数控振荡器表，根据时间频率模式校正使用所提取的索引估计的频率偏移。

4. 发明申请

US20070133658A1 Apparatus and method for estimating and correcting frequency offset in MB-OFDM UWB system using time frequency hopping 失效
标题翻译：在使用时频跳频的MB-OFDM UWB系统中估计和校正频偏的装置和方法
公开(公告)号：US20070133658A1
公开(公告)日：2007-06-14
申请号：US11634006
申请日：2006-12-05
申请人： Cheol-Ho Shin , Sung-Woo Choi , Sang-In Cho , Kyu-Min Kang , Sang-Sung Choi , Kwang-Roh Park
发明人： Cheol-Ho Shin , Sung-Woo Choi , Sang-In Cho , Kyu-Min Kang , Sang-Sung Choi , Kwang-Roh Park
IPC分类号： H04B1/00
CPC分类号： H04L27/2657 , H04B1/7143 , H04B1/7163 , H04B2001/7154 , H04L27/2676
摘要： Provided are an apparatus and method for estimating and correcting a frequency offset in a multiband-Orthogonal Frequency Division Multiplexing Ultra-Wideband system using a time frequency hopping. The method includes the steps of: calculating a tangent input having a first value (X) and a second value (Y) by using PS symbols transferred over same frequency band with respect to one of a plurality of frequency bands used for frequency hopping; calculating tan(X/Y) using the first value (X) and the second value (Y), and calculating an index corresponding to the value of tan(X/Y) from a look-up table created by reflecting a relative frequency offset with respect to a center frequency; calculating indexes representing frequency offsets estimated with respect to remaining frequency bands used for frequency hopping from the look-up table by using the calculated index; extracting an index of a numerical controlled oscillator according to correction positions with respect to a plurality of frequency bands by using the calculated indexes; and correcting the frequency offsets estimated using the extracted indexes according to time frequency patterns by using a numerical controlled oscillator table.
摘要翻译：提供了一种用于使用时间跳频估计和校正多频带 - 正交频分复用超宽带系统中的频率偏移的装置和方法。该方法包括以下步骤：通过使用相对于用于跳频的多个频带之一的相同频带传输的PS符号来计算具有第一值（X）和第二值（Y）的切线输入; 使用第一值（X）和第二值（Y）计算tan（X / Y），并且从通过反映相对频率偏移产生的查找表计算与tan（X / Y）的值相对应的指数相对于中心频率; 计算表示使用所计算的索引从查找表中跳频所使用的剩余频带估计的频率偏移的索引; 通过使用计算出的索引，根据关于多个频带的校正位置提取数控振荡器的索引; 以及通过使用数控振荡器表，根据时间频率模式校正使用所提取的索引估计的频率偏移。

5. 发明授权

US07729238B2 Method for adjusting FFT window positioning in MB-OFDM UWB system 失效
标题翻译：在MB-OFDM UWB系统中调整FFT窗口定位的方法
公开(公告)号：US07729238B2
公开(公告)日：2010-06-01
申请号：US11635272
申请日：2006-12-07
申请人： Cheol-Ho Shin , Sung-Woo Choi , Sang-In Cho , Kyu-Min Kang , Sang-Sung Choi , Kwang-Roh Park
发明人： Cheol-Ho Shin , Sung-Woo Choi , Sang-In Cho , Kyu-Min Kang , Sang-Sung Choi , Kwang-Roh Park
IPC分类号： H04J11/00
CPC分类号： H04B1/7183 , H04L27/2605 , H04L27/265 , H04L27/2665
摘要： Provided is a method for adjusting Fast Fourier Transform (FFT) window positioning in a Multi Band Orthogonal Frequency Division Multiplexing Ultra-Wideband (MB-OFDM UWB) system. The method includes the steps of acquiring an initial FFT window position and a frequency hopping position, demodulating a received signal by using the initial FFT window position and the frequency hopping position acquired in the acquiring step, transmitting received data information to a Media Access Control (MAC) layer with a reception frame (RX frame) structure and judging at the MAC layer whether or not a packet error is occurred based on Frame Check Sequences (FCSs), and if no packet error is occurred, returning to the demodulating step, and if the packet error is occurred, changing a register map by using a predetermined interface line in a MAC-physical layer (MAC-PHY) interface to thereby adjust the FFT window position and the frequency hopping position, and then returning to the demodulating step.
摘要翻译：提供了一种用于在多频带正交频分复用超宽带（MB-OFDM UWB）系统中调整快速傅里叶变换（FFT）窗口定位的方法。该方法包括以下步骤：获取初始FFT窗口位置和跳频位置，通过使用在获取步骤中获取的初始FFT窗口位置和跳频位置解调接收信号，将接收的数据信息发送到介质访问控制（ MAC）层，并且在MAC层判断基于帧检查序列（FCS）是否发生分组错误，并且如果没有发生分组错误，则返回到解调步骤，并且如果发生分组错误，则通过使用MAC-物理层（MAC-PHY）接口中的预定接口线来改变寄存器映射，从而调整FFT窗口位置和跳频位置，然后返回到解调步骤。

6. 发明授权

US07649926B2 Rake receiver for DS-CDMA UWB system and DS-CDMA receiver having the same 失效
标题翻译：用于DS-CDMA UWB系统的Rake接收机和具有相同功能的DS-CDMA接收机
公开(公告)号：US07649926B2
公开(公告)日：2010-01-19
申请号：US11636049
申请日：2006-12-08
申请人： Kyu-Min Kang , Sang-Sung Choi , Kwang-Roh Park , Sang-In Cho , Sung-Woo Choi , Cheol-Ho Shin
发明人： Kyu-Min Kang , Sang-Sung Choi , Kwang-Roh Park , Sang-In Cho , Sung-Woo Choi , Cheol-Ho Shin
IPC分类号： H04B1/00
CPC分类号： H04B1/709 , H04B1/707 , H04B1/7115 , H04B1/71637 , H04B1/7183
摘要： A rake receiver for DS-CDMA UWB system and a DS-CDMA receiver having the same are provided. The rake receiver includes: a channel estimator for estimating a channel having a predetermined chip duration by using a synchronization acquisition sequence; a tracking module for detecting a channel variation and adjusting a synchronization position value when the channel variation is detected; a first switch for selecting one of an output value of an analog-to-digital converter and an output value of a correlator and outputting the selected value; a second switch for selecting one of the output value of the analog-to-digital converter and the output value of the correlator; and a plurality of demodulators having a parallel processing structure to demodulate received signals by using the channel estimation value inputted from the channel estimator, the synchronization position value stored by the tracking module, and an output value of the second switch.
摘要翻译：提供了一种用于DS-CDMA UWB系统的瑞克接收机和具有该接收机的DS-CDMA接收机。耙式接收机包括：信道估计器，用于通过使用同步获取序列来估计具有预定码片持续时间的信道; 跟踪模块，用于在检测到信道变化时检测信道变化并调整同步位置值; 用于选择模数转换器的输出值之一和相关器的输出值并输出所选值的第一开关; 用于选择模数转换器的输出值之一和相关器的输出值的第二开关; 以及具有并行处理结构的多个解调器，通过使用从信道估计器输入的信道估计值，由跟踪模块存储的同步位置值和第二开关的输出值来解调接收信号。

7. 发明授权

US07830973B2 Apparatus and method for detecting preamble packet in orthogonal frequency-division multiplexing system 有权
标题翻译：在正交频分复用系统中检测前导分组的装置和方法
公开(公告)号：US07830973B2
公开(公告)日：2010-11-09
申请号：US11930836
申请日：2007-10-31
申请人： Sang-In Cho , Kyu-Min Kang , Cheol-Ho Shin , Sang-Sung Choi , Kwang-Roh Park
发明人： Sang-In Cho , Kyu-Min Kang , Cheol-Ho Shin , Sang-Sung Choi , Kwang-Roh Park
IPC分类号： H04L27/28
CPC分类号： H04L27/2656 , H04L27/2675
摘要： There is provided an apparatus for detecting a preamble packet in an orthogonal frequency-division multiplexing (OFDM) system, including: a cross-correlation calculating means for calculating a cross-correlation value between a received signal and previously stored preamble pattern values for an OFDM symbol region (N-point); a delay means for delaying the calculate cross-correlation value as much as a M-point interval; a receiving power measuring means for measuring a receiving power for the guard interval; and a dividing means for calculating a final cross-correlation value by dividing the delayed cross correlation value by the measured power.
摘要翻译：提供了一种用于在正交频分复用（OFDM）系统中检测前导分组的装置，包括：互相关计算装置，用于计算接收信号与先前存储的用于OFDM的前导码模式值之间的互相关值符号区域（N点）; 用于将计算互相关值延迟多达M点间隔的延迟装置; 接收功率测量装置，用于测量所述保护间隔的接收功率; 以及分割装置，用于通过将延迟互相关值除以测量的功率来计算最终互相关值。

8. 发明申请

US20080107194A1 APPARATUS AND METHOD FOR DETECTING PREAMBLE PACKET IN ORTHOGONAL FREQUENCY-DIVISION MULTIPLEXING SYSTEM 有权
标题翻译：用于检测正交频分复用系统中前缀分组的装置和方法
公开(公告)号：US20080107194A1
公开(公告)日：2008-05-08
申请号：US11930836
申请日：2007-10-31
申请人： Sang-In CHO , Kyu-Min Kang , Cheol-Ho Shin , Sang-Sung Choi , Kwang-Roh Park
发明人： Sang-In CHO , Kyu-Min Kang , Cheol-Ho Shin , Sang-Sung Choi , Kwang-Roh Park
IPC分类号： H04L27/28
CPC分类号： H04L27/2656 , H04L27/2675
摘要： There is provided an apparatus for detecting a preamble packet in an orthogonal frequency-division multiplexing (OFDM) system, including: a cross-correlation calculating means for calculating a cross-correlation value between a received signal and previously stored preamble pattern values for an OFDM symbol region (N-point); a delay means for delaying the calculate cross-correlation value as much as a M-point interval; a receiving power measuring means for measuring a receiving power for the guard interval; and a dividing means for calculating a final cross-correlation value by dividing the delayed cross correlation value by the measured power.
摘要翻译：提供了一种用于在正交频分复用（OFDM）系统中检测前导分组的装置，包括：互相关计算装置，用于计算接收信号与先前存储的用于OFDM的前导码模式值之间的互相关值符号区域（N点）; 用于将计算互相关值延迟多达M点间隔的延迟装置; 接收功率测量装置，用于测量所述保护间隔的接收功率; 以及分割装置，用于通过将延迟互相关值除以测量的功率来计算最终互相关值。

9. 发明申请

US20070133662A1 Rake receiver for DS-CDMA UWB system and DS-CDMA receiver having the same 失效
标题翻译：用于DS-CDMA UWB系统的Rake接收机和具有相同功能的DS-CDMA接收机
公开(公告)号：US20070133662A1
公开(公告)日：2007-06-14
申请号：US11636049
申请日：2006-12-08
申请人： Kyu-Min Kang , Sang-Sung Choi , Kwang-Roh Park , Sang-In Cho , Sung-Woo Choi , Chcol-Ho Shin
发明人： Kyu-Min Kang , Sang-Sung Choi , Kwang-Roh Park , Sang-In Cho , Sung-Woo Choi , Chcol-Ho Shin
IPC分类号： H04B1/00
CPC分类号： H04B1/709 , H04B1/707 , H04B1/7115 , H04B1/71637 , H04B1/7183
摘要： A rake receiver for DS-CDMA UWB system and a DS-CDMA receiver having the same are provided. The rake receiver includes: a channel estimator for estimating a channel having a predetermined chip duration by using a synchronization acquisition sequence; a tracking module for detecting a channel variation and adjusting a synchronization position value when the channel variation is detected; a first switch for selecting one of an output value of an analog-to-digital converter and an output value of a correlator and outputting the selected value; a second switch for selecting one of the output value of the analog-to-digital converter and the output value of the correlator; and a plurality of demodulators having a parallel processing structure to demodulate received signals by using the channel estimation value inputted from the channel estimator, the synchronization position value stored by the tracking module, and an output value of the second switch.
摘要翻译：提供了一种用于DS-CDMA UWB系统的瑞克接收机和具有该接收机的DS-CDMA接收机。耙式接收机包括：信道估计器，用于通过使用同步获取序列来估计具有预定码片持续时间的信道; 跟踪模块，用于在检测到信道变化时检测信道变化并调整同步位置值; 用于选择模数转换器的输出值之一和相关器的输出值并输出所选值的第一开关; 用于选择模数转换器的输出值之一和相关器的输出值的第二开关; 以及具有并行处理结构的多个解调器，通过使用从信道估计器输入的信道估计值，由跟踪模块存储的同步位置值和第二开关的输出值来解调接收信号。

10. 发明申请

US20070133670A1 Parallel equalizer for DS-CDMA UWB system and method thereof 失效
标题翻译： DS-CDMA UWB系统的并行均衡器及其方法
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。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式