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1. 发明授权

US08401053B2 Active RFID apparatus for improving PN code generation 有权
标题翻译：有源RFID设备，用于改善PN码生成
公开(公告)号：US08401053B2
公开(公告)日：2013-03-19
申请号：US12562105
申请日：2009-09-17
申请人： Jong-sub Cha , Seung-il Myong , Heyung-sub Lee , Sang-hyun Mo , Jong-suk Chae
发明人： Jong-sub Cha , Seung-il Myong , Heyung-sub Lee , Sang-hyun Mo , Jong-suk Chae
IPC分类号： H04B1/00
CPC分类号： H04J13/10 , H04B1/707 , H04J13/0022
摘要： An active radio frequency identification (RFID) apparatus having an additional transmitter in addition to a single transmitter is provided. The active RFID apparatus includes a first transmitter including a first pseudo noise (PN) code generator to generate a direct sequence spread spectrum (DSSS) introduced by ISO/IEC (International Organization for Standardization/International Electrotechnical Commission) 24730-2 or ISO/IEC 18185-5 type B; and a second transmitter including a second PN code generator to perform an AND operation on an initial value and a fed back value and shift the resultant value of the AND operation, to perform an XOR operation on particular bits from among the shifted bits and to perform an XOR operation again on the shifted bits and the resulting value of the XOR operation to finally generate a PN code. Accordingly, where an additional PN code is added besides an existing PN code, a PN code having excellent auto correlation characteristics allowing discrimination of the PN code itself and cross-correlation characteristics providing a code discrimination ability with respect to another code can be generated.
摘要翻译：提供了除了单个发射机之外还具有附加发射机的有源射频识别（RFID）装置。有源RFID装置包括第一发射机，其包括第一伪噪声（PN）码发生器，以产生由ISO / IEC（国际标准化组织/国际电工委员会）24730-2或ISO / IEC引入的直接序列扩频（DSSS） 18185-5型B; 以及第二发送器，包括第二PN码发生器，用于对初始值和反馈值执行AND运算，并且移位AND运算的结果值，以对从移位中的特定比特执行异或运算，并执行对移位的位再次进行XOR操作，并且产生XOR运算的结果值，以最终生成PN码。因此，除了现有的PN码之外附加附加的PN码，可以产生具有能够区分PN码本身的优良自相关特性的PN码和提供相对于其他码的码识别能力的互相关特性。

2. 发明申请

US20110181392A1 REAL TIME LOCATING SYSTEM, READER, RFID TAG AND DRIVING METHOD OF RFID TAG FOR LOCATING 审中-公开
标题翻译：用于定位的RFID标签的实时定位系统，读取器，RFID标签和驱动方法
公开(公告)号：US20110181392A1
公开(公告)日：2011-07-28
申请号：US12694893
申请日：2010-01-27
申请人： Jong Sub CHA , Sang Hyun Mo , Heyung Sub Lee
发明人： Jong Sub CHA , Sang Hyun Mo , Heyung Sub Lee
IPC分类号： G08B5/22
CPC分类号： G01S13/825 , G06K7/0008
摘要： Provided are a real-time locating systems, a reader, an RFID tag and a driving method of the RFID tag for locating. The locating system includes an RFID tag, a plurality of readers, and a location processor. The RFID tag outputs a first or second transmission message frame according to whether value added information exists. The readers are disposed at different locations, receive and analyze the first or second transmission message frame to transmit extracted information and reception time information corresponding to the extracted information to a location processor. The location processor analyzes the information which is extracted through the readers and the reception time information to calculate location information or the value added information related to the RFID tag.
摘要翻译：提供了用于定位的RFID标签的实时定位系统，读取器，RFID标签和驱动方法。定位系统包括RFID标签，多个读取器和位置处理器。 RFID标签根据增值信息是否存在输出第一或第二传输消息帧。读取器设置在不同的位置，接收和分析第一或第二传输消息帧以将提取的信息和与提取的信息相对应的接收时间信息发送到位置处理器。位置处理器分析通过读取器提取的信息和接收时间信息来计算与RFID标签相关的位置信息或增值信息。

3. 发明授权

US08422593B2 Parallel automatic frequency offset estimation method and apparatus 有权
标题翻译：并行自动频偏估计方法及装置
公开(公告)号：US08422593B2
公开(公告)日：2013-04-16
申请号：US12579840
申请日：2009-10-15
申请人： Seung-il Myong , Jong-sub Cha , Hoe-sung Yang , Kang-bok Lee , Heyung-sub Lee , Jong-suk Chae
发明人： Seung-il Myong , Jong-sub Cha , Hoe-sung Yang , Kang-bok Lee , Heyung-sub Lee , Jong-suk Chae
IPC分类号： H03K9/06
CPC分类号： H04L27/0014 , H04L2027/0026 , H04L2027/0046
摘要： Disclosed is a wireless signal receiving apparatus, and more particularly, disclosed is a parallel automatic frequency offset estimation apparatus and method for tracking a frequency offset in an early stage by calculating, in parallel, frequency offsets of a received signal. The parallel automatic frequency offset estimation apparatus includes a receiving unit to receive a data frame; and a frequency offset estimation unit to calculate, in parallel, frequency and phase deviations at different bit intervals within a particular section of the received data frame, to add together the frequency and phase deviations to obtain a first sum of the frequency and phase deviations, and to add the first sum to a frequency phase deviation calculated for each bit after the particular section in the received data frame to obtain a second sum of the frequency and phase deviations. Accordingly, transmission frequency tracking can be performed at higher speed, compared to the conventional systems in which frequency offset acquisition is carried out in stages. Also, accurate tracking of a transmission frequency is possible in an initial frame.
摘要翻译：公开了一种无线信号接收装置，更具体地，公开了一种并行自动频率偏移估计装置和方法，用于通过并行计算接收信号的频率偏移来跟踪早期的频率偏移。并行自动频率偏移估计装置包括：接收单元，用于接收数据帧; 以及频率偏移估计单元，用于并行地计算在接收数据帧的特定部分内的不同比特间隔处的频率和相位偏差，以将频率和相位偏差相加以获得频率和相位偏差的第一和，并且将第一和加到针对接收数据帧中的特定部分之后的每个比特计算的频率相位偏移，以获得频率和相位偏差的第二和。因此，与分阶段进行频率偏移获取的常规系统相比，可以以更高的速度执行传输频率跟踪。此外，在初始帧中可以准确地跟踪传输频率。

4. 发明申请

US20110122926A1 APPARATUS AND METHOD FOR GENERATING PSEUDO NOISE CODE 有权
标题翻译：用于生成PSEUDO噪声代码的装置和方法
公开(公告)号：US20110122926A1
公开(公告)日：2011-05-26
申请号：US13003374
申请日：2008-12-31
申请人： Seung Il Myong , Jong Sub Cha , Sang Hyun Mo , Jae Heum Lee , Heyung Sub Lee , Jong Suk Chae
发明人： Seung Il Myong , Jong Sub Cha , Sang Hyun Mo , Jae Heum Lee , Heyung Sub Lee , Jong Suk Chae
IPC分类号： H04B1/00
CPC分类号： H04J13/10 , H04B1/707 , H04J13/0022
摘要： An apparatus and method of generating a pseudo noise (PN) code is provided. The apparatus for generating the PN code includes: a memory device unit including a plurality of memory devices; an exclusive-OR (XOR) operation unit receiving output values of at least two memory devices among output values of the plurality of memory devices to output an XOR operation value with respect to the received output values; and a PN code generation unit generating the PN code based on an output value of the XOR operation unit.
摘要翻译：提供了一种产生伪噪声（PN）码的装置和方法。用于产生PN码的装置包括：包括多个存储装置的存储装置单元; 异或（XOR）操作单元，在多个存储器件的输出值之间接收至少两个存储器件的输出值，以相对于所接收的输出值输出异或运算值; 以及PN代码生成单元，其基于所述异或运算单元的输出值生成所述PN码。

5. 发明申请

US20100158165A1 PARALLEL AUTOMATIC FREQUENCY OFFSET ESTIMATION METHOD AND APPARATUS 有权
标题翻译：并行自动频率偏移估计方法和装置
公开(公告)号：US20100158165A1
公开(公告)日：2010-06-24
申请号：US12579840
申请日：2009-10-15
申请人： Seung-il MYONG , Jong-sub CHA , Hoe-sung YANG , Kang-bok LEE , Heyung-sub LEE , Jong-suk CHAE
发明人： Seung-il MYONG , Jong-sub CHA , Hoe-sung YANG , Kang-bok LEE , Heyung-sub LEE , Jong-suk CHAE
IPC分类号： H04L7/00 , H04L27/06
CPC分类号： H04L27/0014 , H04L2027/0026 , H04L2027/0046
摘要： Disclosed is a wireless signal receiving apparatus, and more particularly, disclosed is a parallel automatic frequency offset estimation apparatus and method for tracking a frequency offset in an early stage by calculating, in parallel, frequency offsets of a received signal. The parallel automatic frequency offset estimation apparatus includes a receiving unit to receive a data frame; and a frequency offset estimation unit to calculate, in parallel, frequency and phase deviations at different bit intervals within a particular section of the received data frame, to add together the frequency and phase deviations to obtain a first sum of the frequency and phase deviations, and to add the first sum to a frequency phase deviation calculated for each bit after the particular section in the received data frame to obtain a second sum of the frequency and phase deviations. Accordingly, transmission frequency tracking can be performed at higher speed, compared to the conventional systems in which frequency offset acquisition is carried out in stages. Also, accurate tracking of a transmission frequency is possible in an initial frame.
摘要翻译：公开了一种无线信号接收装置，更具体地，公开了一种并行自动频率偏移估计装置和方法，用于通过并行计算接收信号的频率偏移来跟踪早期的频率偏移。并行自动频率偏移估计装置包括：接收单元，用于接收数据帧; 以及频率偏移估计单元，用于并行地计算在接收数据帧的特定部分内的不同比特间隔处的频率和相位偏差，以将频率和相位偏差相加以获得频率和相位偏差的第一和，并且将第一和加到针对接收数据帧中的特定部分之后的每个比特计算的频率相位偏移，以获得频率和相位偏差的第二和。因此，与分阶段进行频率偏移获取的常规系统相比，可以以更高的速度执行传输频率跟踪。此外，在初始帧中可以准确地跟踪传输频率。

6. 发明申请

US20100127831A1 ACTIVE RFID APPARATUS FOR IMPROVING PN CODE GNENRATION 有权
标题翻译：有效的RFID设备，用于改进PN代码
公开(公告)号：US20100127831A1
公开(公告)日：2010-05-27
申请号：US12562105
申请日：2009-09-17
申请人： Jong-sub CHA , Seung-il MYONG , Heyung-sub LEE , Sang-hyun MO , Jong-suk CHAE
发明人： Jong-sub CHA , Seung-il MYONG , Heyung-sub LEE , Sang-hyun MO , Jong-suk CHAE
IPC分类号： H04B1/707 , H04Q5/22
CPC分类号： H04J13/10 , H04B1/707 , H04J13/0022
摘要： An active radio frequency identification (RFID) apparatus having an additional transmitter in addition to a single transmitter is provided. The active RFID apparatus includes a first transmitter including a first pseudo noise (PN) code generator to generate a direct sequence spread spectrum (DSSS) introduced by ISO/IEC (International Organization for Standardization/International Electrotechnical Commission) 24730-2 or ISO/IEC 18185-5 type B; and a second transmitter including a second PN code generator to perform an AND operation on an initial value and a fed back value and shift the resultant value of the AND operation, to perform an XOR operation on particular bits from among the shifted bits and to perform an XOR operation again on the shifted bits and the resulting value of the XOR operation to finally generate a PN code. Accordingly, where an additional PN code is added besides an existing PN code, a PN code having excellent auto correlation characteristics allowing discrimination of the PN code itself and cross-correlation characteristics providing a code discrimination ability with respect to another code can be generated.
摘要翻译：提供了除了单个发射机之外还具有附加发射机的有源射频识别（RFID）装置。有源RFID装置包括第一发射机，其包括第一伪噪声（PN）码发生器，以产生由ISO / IEC（国际标准化组织/国际电工委员会）24730-2或ISO / IEC引入的直接序列扩频（DSSS） 18185-5型B; 以及第二发送器，包括第二PN码发生器，用于对初始值和反馈值执行AND运算，并且移位AND运算的结果值，以对从移位中的特定比特执行异或运算，并执行对移位的位再次进行XOR操作，并且产生XOR运算的结果值，以最终生成PN码。因此，除了现有的PN码之外附加附加的PN码，可以产生具有能够区分PN码本身的优良自相关特性的PN码和提供相对于其他码的码识别能力的互相关特性。

7. 发明授权

US08787514B2 Apparatus and method for generating pseudo noise code 有权
标题翻译：用于产生伪噪声码的装置和方法
公开(公告)号：US08787514B2
公开(公告)日：2014-07-22
申请号：US13003374
申请日：2008-12-31
申请人： Seung Il Myong , Jong Sub Cha , Sang Hyun Mo , Jae Heum Lee , Heyung Sub Lee , Jong Suk Chae
发明人： Seung Il Myong , Jong Sub Cha , Sang Hyun Mo , Jae Heum Lee , Heyung Sub Lee , Jong Suk Chae
IPC分类号： H04L27/10
CPC分类号： H04J13/10 , H04B1/707 , H04J13/0022
摘要： An apparatus and method of generating a pseudo noise (PN) code is provided. The apparatus for generating the PN code includes: a memory device unit including a plurality of memory devices; an exclusive-OR (XOR) operation unit receiving output values of at least two memory devices among output values of the plurality of memory devices to output an XOR operation value with respect to the received output values; and a PN code generation unit generating the PN code based on an output value of the XOR operation unit.
摘要翻译：提供了一种产生伪噪声（PN）码的装置和方法。用于产生PN码的装置包括：包括多个存储装置的存储装置单元; 异或（XOR）操作单元，在多个存储器件的输出值之间接收至少两个存储器件的输出值，以相对于所接收的输出值输出异或运算值; 以及PN代码生成单元，其基于所述异或运算单元的输出值生成所述PN码。

8. 发明授权

US08369438B2 Iterative tree search-based precoding technique for multiuser MIMO communication system 有权
标题翻译：基于迭代树搜索的多用户MIMO通信系统的预编码技术
公开(公告)号：US08369438B2
公开(公告)日：2013-02-05
申请号：US12454272
申请日：2009-05-14
申请人： Joo-Hyun Lee , Sung-Soo Hwang , Sang-Boh Yun , Jong-Ho Lee , Sung-Yoon Jung , Joonhyuk Kang , Kyung-Ho Park , Jong-Sub Cha , Namseok Chang , Keon-Kook Lee
发明人： Joo-Hyun Lee , Sung-Soo Hwang , Sang-Boh Yun , Jong-Ho Lee , Sung-Yoon Jung , Joonhyuk Kang , Kyung-Ho Park , Jong-Sub Cha , Namseok Chang , Keon-Kook Lee
IPC分类号： H04B7/02
CPC分类号： H04L25/03203 , H04L25/03191 , H04L25/0328 , H04L25/03343 , H04L2025/03426
摘要： An iterative tree search-based preceding method for a multi-user Multi-Input Multi-Output (MIMO) communication system includes determining a reference value of a cumulative branch metric of a candidate symbol, eliminating candidates having values that exceed the determined reference value of the cumulative branch metric of the candidate symbol, and registering values, which do not exceed the determined reference value of the cumulative branch metric of the candidate symbol, as entries, and selecting the least value from the values registered as the entries. Thereby, the method has low complexity and similar performance compared to an existing Sphere Encoding (SE) technique.
摘要翻译：用于多用户多输入多输出（MIMO）通信系统的基于迭代树搜索的先前方法包括确定候选符号的累积分支度量的参考值，消除具有超过确定的参考值的值的候选者候选符号的累积分支度量，以及将不超过所确定的候选符号的累积分支度量的参考值的值登记为条目，并从登记为条目的值中选择最小值。因此，与现有的球体编码（SE）技术相比，该方法具有低复杂性和相似的性能。

9. 发明申请

US20090286494A1 Iterative tree search-based precoding technique for multiuser mimo communication system 有权
标题翻译：用于多用户mimo通信系统的基于迭代树搜索的预编码技术
公开(公告)号：US20090286494A1
公开(公告)日：2009-11-19
申请号：US12454272
申请日：2009-05-14
申请人： Joo-Hyun Lee , Sung-Soo Hwang , Sang-Boh Yun , Jong-Ho Lee , Sung-Yoon Jung , Joonhyuk Kang , Kyung-Ho Park , Jong-Sub Cha , Namseok Chang , Keon-Kook Lee
发明人： Joo-Hyun Lee , Sung-Soo Hwang , Sang-Boh Yun , Jong-Ho Lee , Sung-Yoon Jung , Joonhyuk Kang , Kyung-Ho Park , Jong-Sub Cha , Namseok Chang , Keon-Kook Lee
IPC分类号： H04B1/04
CPC分类号： H04L25/03203 , H04L25/03191 , H04L25/0328 , H04L25/03343 , H04L2025/03426
摘要： An iterative tree search-based preceding method for a multi-user Multi-Input Multi-Output (MIMO) communication system includes determining a reference value of a cumulative branch metric of a candidate symbol, eliminating candidates having values that exceed the determined reference value of the cumulative branch metric of the candidate symbol, and registering values, which do not exceed the determined reference value of the cumulative branch metric of the candidate symbol, as entries, and selecting the least value from the values registered as the entries. Thereby, the method has low complexity and similar performance compared to an existing Sphere Encoding (SE) technique.
摘要翻译：用于多用户多输入多输出（MIMO）通信系统的基于迭代树搜索的先前方法包括确定候选符号的累积分支度量的参考值，消除具有超过确定的参考值的值的候选者候选符号的累积分支度量，以及将不超过所确定的候选符号的累积分支度量的参考值的值登记为条目，并从登记为条目的值中选择最小值。因此，与现有的球体编码（SE）技术相比，该方法具有低复杂性和相似的性能。

10. 发明申请

US20070291882A1 APPARATUS AND METHOD FOR DETECTING SIGNAL IN MULTI-INPUT MULTI-OUTPUT SYSTEM 审中-公开
标题翻译：用于在多输入多输出系统中检测信号的装置和方法
公开(公告)号：US20070291882A1
公开(公告)日：2007-12-20
申请号：US11762265
申请日：2007-06-13
申请人： Sung-Woo Park , Joo-Hyun Lee , Kyung-Joo Suh , Young-Hoon Kwon , Sung-Soo Hwang , Jong-In Kim , Joon-Hyuk Kang , Jong-Sub Cha
发明人： Sung-Woo Park , Joo-Hyun Lee , Kyung-Joo Suh , Young-Hoon Kwon , Sung-Soo Hwang , Jong-In Kim , Joon-Hyuk Kang , Jong-Sub Cha
IPC分类号： H04L1/02 , H03D1/00
CPC分类号： H04L25/03006 , H04L2025/03426 , H04L2025/03605
摘要： A signal detection apparatus and method using a modified stack algorithm in a Multi-Input Multi-Output (MIMO) system are provided. The signal detection method includes sorting signals received via antennas and channel coefficients for respective users in descending order, decomposing a channel matrix composed of the sorted channel coefficients into a unitary matrix and an upper-triangular matrix, determining the number of candidate symbol-sequences using the decomposed upper-triangular matrix, obtaining a signal vector for the antennas by using the sorted signals received via respective antennas and the unitary matrix, wherein the signal vector is proportional to the upper-triangular matrix, and detecting the determined number of candidate symbol-sequences by using a modified stack algorithm while expanding a stack structure for the obtained signal vector.
摘要翻译：提供了一种在多输入多输出（MIMO）系统中使用修改堆栈算法的信号检测装置和方法。信号检测方法包括按照降序对各个用户的经由天线和信道系数接收的信号进行分类，将由排序的信道系数组成的信道矩阵分解成酉矩阵和上三角矩阵，使用分解的上三角矩阵，通过使用经由各个天线接收的分类信号和单位矩阵获得天线的信号矢量，其中信号向量与上三角矩阵成比例，并且检测确定的候选符号 - 通过使用修改的堆栈算法同时扩展获得的信号向量的堆叠结构来扩展序列。

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