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1. 发明授权

US08982687B2 Apparatus and method for I/Q offset cancellation in SC-FDMA system 有权
标题翻译： SC-FDMA系统中I / Q偏移消除的装置和方法
公开(公告)号：US08982687B2
公开(公告)日：2015-03-17
申请号：US13820193
申请日：2010-12-30
申请人： Jinsoup Joung , Kyeongmin Ha , Seunghwan Ji , Yonghoon Lim , Byungkwan Jang
发明人： Jinsoup Joung , Kyeongmin Ha , Seunghwan Ji , Yonghoon Lim , Byungkwan Jang
IPC分类号： H04J11/00 , H04J1/16 , H04L27/26 , H04L27/38
CPC分类号： H04J1/16 , H04L27/2647 , H04L27/3854
摘要： The present invention relates to an apparatus and a method for eliminating I/Q offset in a receiver of a SC-FDMA system which improves performance of the system by accurate measurement and cancellation of I/Q offset in a receiver of a SC-FDMA system operating in a 3GPP LTE uplink. An apparatus for eliminating I/Q offset in a receiver of the SC-FDMA system constituting the receiver of the SC-FDMA system includes: a linear interpolation channel estimation unit for estimating channel using demodulation reference symbol (DMRS) that is a training sequence (X) corresponding to the discrete Fourier transformed signal (Y) that has passed through frame sync acquisition, frequency compensation and cyclic prefix elimination; a signal regeneration/cancellation unit for calculating I/Q offset (D=Y−Y′) by subtracting the discrete Fourier transformed signal (Y) from the ideal discrete Fourier transformed signal (Y′=H′X) generated by using channel coefficient (H′), that is an output of the linear interpolation channel estimation unit, and the DMRS that is the training sequence (X); and an I/Q offset measurement/cancellation unit for generating VQ offset-free signal (YNoDC=Y−D′) by subtracting I/Q offset (D′) having corrected phase and power of the VQ offset (D=Y−Y′) from the discrete Fourier transformed signal (Y).
摘要翻译：本发明涉及一种用于消除SC-FDMA系统的接收机中的I / Q偏移的装置和方法，其通过在SC-FDMA系统的接收机中精确测量和消除I / Q偏移来提高系统的性能在3GPP LTE上行链路中工作。构成SC-FDMA系统的接收机的SC-FDMA系统的接收机中的I / Q偏移消除装置包括：线性内插信道估计单元，用于使用作为训练序列的解调参考符号（DMRS）来估计信道 X）对应于通过帧同步捕获，频率补偿和循环前缀消除的离散傅立叶变换信号（Y）; 信号再现/消除单元，用于通过从使用信道系数产生的理想离散付里叶变换信号（Y'= H'X）中减去离散付里叶变换信号（Y）来计算I / Q偏移（D = Y-Y'）（H'），即线性内插信道估计单元的输出，作为训练序列（X）的DMRS; 以及用于通过减去具有校正相位的I / Q偏移（D'）和VQ偏移的功率来产生VQ无偏移信号（YNoDC = Y-D'）的I / Q偏移测量/消除单元（D = Y-Y' '）离散傅里叶变换信号（Y）。

2. 发明授权

US09042483B2 Apparatus and method of compensating for I/Q imbalance in direct up-conversion system 有权
标题翻译：补偿直接上转换系统中I / Q不平衡的装置和方法
公开(公告)号：US09042483B2
公开(公告)日：2015-05-26
申请号：US14355941
申请日：2012-04-30
申请人： Jinsoup Joung , Seunghwan Ji , Yonghoon Lim , Byungkwan Jang
发明人： Jinsoup Joung , Seunghwan Ji , Yonghoon Lim , Byungkwan Jang
IPC分类号： H04K1/02 , H04B1/04 , H04L27/36 , H04L27/26
CPC分类号： H04B1/0475 , H04L27/2627 , H04L27/364
摘要： An apparatus and a method of compensating for an I/Q imbalance in a direct up-conversion system prevents the performance of the system from being deteriorated by efficiently compensating for an I/Q timing skew, an I/Q phase imbalance, and an I/Q gain imbalance by using a characteristic of an OFDM scheme in an Orthogonal Frequency Domain Multiple (Access) (OFDM(A)) system using a direct up-conversion scheme. According to the apparatus and the method of compensating for an I/Q imbalance in the direct up-conversion system of the present invention, an OFDM(A) system using a direct up-conversion scheme may efficiently compensate for I/Q timing skew, I/Q phase imbalance, and I/Q gain imbalance by using a characteristic of an OFDMA scheme, so that a performance of the system is prevented from being deteriorated.
摘要翻译：补偿直接上变频系统中的I / Q不平衡的装置和方法通过有效地补偿I / Q定时偏移，I / Q相位不平衡和I（I））来防止系统的性能恶化通过使用直接上变频方案在正交频域多（接入）（OFDM（A））系统中使用OFDM方案的特性来获得/ Q增益不平衡。根据本发明的直接上变频系统的补偿I / Q不平衡的装置和方法，使用直接上变频方案的OFDM（A）系统可以有效地补偿I / Q定时偏差， I / Q相位不平衡和通过使用OFDMA方案的特性的I / Q增益不平衡，从而防止系统的性能恶化。

3. 发明申请

US20130155833A1 APPARATUS AND METHOD FOR I/Q OFFSET CANCELLATION IN SC-FDMA SYSTEM 有权
标题翻译：用于SC-FDMA系统中I / Q偏移消除的装置和方法
公开(公告)号：US20130155833A1
公开(公告)日：2013-06-20
申请号：US13820193
申请日：2010-12-30
申请人： Jinsoup Joung , Kyeongmin Ha , Seunghwan Ji , Yonghoon Lim , Byungkwan Jang
发明人： Jinsoup Joung , Kyeongmin Ha , Seunghwan Ji , Yonghoon Lim , Byungkwan Jang
IPC分类号： H04J1/16
CPC分类号： H04J1/16 , H04L27/2647 , H04L27/3854
摘要： The present invention relates to an apparatus and a method for eliminating I/Q offset in a receiver of a SC-FDMA system which improves performance of the system by accurate measurement and cancellation of I/Q offset in a receiver of a SC-FDMA system operating in a 3GPP LTE uplink. An apparatus for eliminating I/Q offset in a receiver of the SC-FDMA system constituting the receiver of the SC-FDMA system includes: a linear interpolation channel estimation unit for estimating channel using demodulation reference symbol (DMRS) that is a training sequence (X) corresponding to the discrete Fourier transformed signal (Y) that has passed through frame sync acquisition, frequency compensation and cyclic prefix elimination; a signal regeneration/cancellation unit for calculating I/Q offset (D=Y−Y′) by subtracting the discrete Fourier transformed signal (Y) from the ideal discrete Fourier transformed signal (Y′=H′X) generated by using channel coefficient (H′), that is an output of the linear interpolation channel estimation unit, and the DMRS that is the training sequence (X); and an I/Q offset measurement/cancellation unit for generating VQ offset-free signal (YNoDC=Y−D′) by subtracting I/Q offset (D′) having corrected phase and power of the VQ offset (D=Y−Y′) from the discrete Fourier transformed signal (Y).
摘要翻译：本发明涉及一种用于消除SC-FDMA系统的接收机中的I / Q偏移的装置和方法，其通过在SC-FDMA系统的接收机中精确测量和消除I / Q偏移来提高系统的性能在3GPP LTE上行链路中工作。构成SC-FDMA系统的接收机的SC-FDMA系统的接收机中的I / Q偏移消除装置包括：线性内插信道估计单元，用于使用作为训练序列的解调参考符号（DMRS）来估计信道 X）对应于通过帧同步捕获，频率补偿和循环前缀消除的离散傅立叶变换信号（Y）; 信号再现/消除单元，用于通过从使用信道系数产生的理想离散付里叶变换信号（Y'= H'X）中减去离散付里叶变换信号（Y）来计算I / Q偏移（D = Y-Y'）（H'），即线性内插信道估计单元的输出，作为训练序列（X）的DMRS; 以及用于通过减去具有校正相位的I / Q偏移（D'）和VQ偏移的功率来产生VQ无偏移信号（YNoDC = Y-D'）的I / Q偏移测量/消除单元（D = Y-Y' '）离散傅里叶变换信号（Y）。

4. 发明申请

US20130208679A1 REFERENCE SIGNAL CREATION APPARATUS AND PREAMBLE SEQUENCE DETECTION APPARATUS USING THE SAME 审中-公开
标题翻译：参考信号创建装置和使用其的前序列检测装置
公开(公告)号：US20130208679A1
公开(公告)日：2013-08-15
申请号：US13825149
申请日：2011-02-22
申请人： Jinsoup Joung , Seunghwan Ji , Yonghoon Lim , Eunjin Lee , Seungik Yang
发明人： Jinsoup Joung , Seunghwan Ji , Yonghoon Lim , Eunjin Lee , Seungik Yang
IPC分类号： H04W56/00
CPC分类号： H04W56/001 , H04L27/2613 , H04W28/06 , H04W56/0005 , H04W56/0085 , H04W74/0833
摘要： The present invention relates to a method for shortening the time taken for physical random access channel (PRACH) signal synchronization and preamble sequence detection in an LTE uplink system, and more particularly, to a method for shortening the time taken for preamble sequence detection using an inverse discrete Fourier transform. To this end, a preamble sequence detection apparatus according to the present invention comprises: a reference signal generation unit, which includes a preamble sequence generation unit for receiving a first signal having a predetermined length and outputting a plurality of second signals having the length of 839, a discrete Fourier transform unit for performing a discrete Fourier transform on the second signals received from the preamble sequence generation unit to transform the second signals into a frequency domain signal, a subcarrier mapping unit for mapping the frequency domain signal outputted from the discrete Fourier transform unit to a subcarrier, and an inverse discrete Fourier transform unit for receiving a signal having the length of 2n from the subcarrier mapping unit and performing an inverse discrete Fourier transform to transform the received signal into a time domain signal having the length of 2n; a PRACH reception unit which receives a PRACH signal transmitted from a terminal; and a second correlation unit which detects a correlation between the reference signal received from the reference signal generation unit and a signal received from the PRACH reception unit.
摘要翻译：本发明涉及一种在LTE上行链路系统中缩短物理随机接入信道（PRACH）信号同步和前同步码序列检测所花费的时间的方法，更具体地说，涉及一种缩短使用逆离散傅里叶变换。为此，根据本发明的前序序列检测装置包括：参考信号生成单元，包括：前导序列生成单元，用于接收具有预定长度的第一信号，并输出长度为839的多个第二信号离散傅里叶变换单元，用于对从前序序列生成单元接收到的第二信号进行离散付里叶变换，将第二信号变换为频域信号;子载波映射单元，用于映射从离散傅里叶变换以及离散傅里叶逆变换单元，用于从子载波映射单元接收长度为2n的信号，并执行逆离散付里叶变换，将接收信号变换为长度为2n的时域信号; PRACH接收单元，其接收从终端发送的PRACH信号; 以及第二相关单元，其检测从参考信号生成单元接收的参考信号与从PRACH接收单元接收的信号之间的相关性。

5. 发明授权

US08976718B2 Automatic detection apparatus for UL/DL configuration in LTE-TDD signal and the method thereby 有权
标题翻译：用于LTE-TDD信号中的UL / DL配置的自动检测装置及其方法
公开(公告)号：US08976718B2
公开(公告)日：2015-03-10
申请号：US13822766
申请日：2011-01-06
申请人： Jinsoup Joung , Seunghwan Ji , Yonghoon Lim , Jaesung Lee
发明人： Jinsoup Joung , Seunghwan Ji , Yonghoon Lim , Jaesung Lee
IPC分类号： H04B7/00 , H04W24/00 , H04B17/00 , H04L5/00 , H04L5/14
CPC分类号： H04W24/00 , H04B17/318 , H04B17/382 , H04L5/0007 , H04L5/1469
摘要： This invention relates to an automatic detection apparatus for UL/DL configuration in LTE-TDD signal and the method thereby for automatically detecting the UL/DL configuration number of an LTE-TDD signal without a decoder by using a simple structure. An automatic detection apparatus for UL/DL configuration in LTE-TDD signal comprises: a signal receiving unit for receiving an LTE-TDD RF signal and converting the LTE-TDD RF signal into a LTE-TDD baseband signal; a signal extracting unit for extracting a cell-specific reference signal for each subframe length in one frame length of the LTE-TDD baseband signal received from the signal receiving unit; a signal power measurement unit for measuring the power of the corresponding subframe reference signal according to the cell-specific reference signal received from the signal extracting unit; and an UL/DL configuration determination unit for determining whether the corresponding subframe is a DL subframe or an UL subframe according to the comparison result of the power of the corresponding subframe reference signal measured in the signal power measurement unit with a predetermined reference value, and determining the UL/DL configuration number for the corresponding frame based on the subframe number determined as described above. In the above configuration, it is characterized in that the predetermined reference value is the noise power without any LTE-TDD signal.
摘要翻译：本发明涉及用于LTE-TDD信号中的UL / DL配置的自动检测装置及其方法，其通过使用简单的结构自动检测没有解码器的LTE-TDD信号的UL / DL配置号。一种用于LTE-TDD信号中UL / DL配置的自动检测装置，包括：信号接收单元，用于接收LTE-TDD RF信号，并将LTE-TDD RF信号转换为LTE-TDD基带信号; 信号提取单元，用于从从信号接收单元接收的LTE-TDD基带信号的一个帧长度中提取每个子帧长度的小区特定参考信号; 信号功率测量单元，用于根据从信号提取单元接收的小区特定参考信号来测量相应子帧参考信号的功率; 以及UL / DL配置确定单元，用于根据在具有预定参考值的信号功率测量单元中测量的相应子帧参考信号的功率的比较结果来确定相应子帧是否为DL子帧或UL子帧，以及基于如上所述确定的子帧号来确定相应帧的UL / DL配置编号。在上述配置中，其特征在于，预定参考值是没有任何LTE-TDD信号的噪声功率。

6. 发明申请

US20130215856A1 PREAMBLE SEQUENCE DETECTION APPARATUS 审中-公开
标题翻译：前置序列检测装置
公开(公告)号：US20130215856A1
公开(公告)日：2013-08-22
申请号：US13876690
申请日：2011-02-22
申请人： Jinsoup Joung , Seunghwan Ji , Yonghoon Lim , Eunjin Lee , Seungik Yang
发明人： Jinsoup Joung , Seunghwan Ji , Yonghoon Lim , Eunjin Lee , Seungik Yang
IPC分类号： H04W74/08
CPC分类号： H04W74/0833 , H04L27/2613 , H04L27/2627 , H04L27/2663
摘要： The present invention relates to a method for shortening the time taken for physical random access channel (PRACH) signal synchronization and preamble sequence detection in an LTE uplink system, and more particularly, to a method for shortening the time taken for preamble sequence detection using an inverse discrete Fourier transform. To this end, a preamble sequence detection apparatus according to the present invention comprises: a reference signal generation unit, which receives a first signal having a predetermined value, generates a preamble sequence, performs a discrete Fourier transform, a subcarrier mapping, and an inverse discrete Fourier transform on the generated preamble sequence, and then expands the resultant signal at a set rate to quantize the resultant signal; a PRACH reception unit which receives a PRACH signal transmitted from a terminal; and a correlation unit which detects a correlation between the reference signal received from the reference signal generation unit and a signal received from the PRACH reception unit.
摘要翻译：本发明涉及一种在LTE上行链路系统中缩短物理随机接入信道（PRACH）信号同步和前同步码序列检测所花费的时间的方法，更具体地说，涉及一种缩短使用逆离散傅里叶变换。为此，根据本发明的前序序列检测装置包括：参考信号生成单元，其接收具有预定值的第一信号，生成前导码序列，执行离散付里叶变换，子载波映射和反相对所生成的前导码序列进行离散傅里叶变换，然后以设定的速率扩展所得到的信号以量化所得到的信号; PRACH接收单元，其接收从终端发送的PRACH信号; 以及相关单元，其检测从参考信号生成单元接收的参考信号与从PRACH接收单元接收的信号之间的相关性。

7. 发明申请

US20140269398A1 METHOD FOR TRANSMITTING A CQI INDEX FROM A USER TERMINAL 审中-公开
标题翻译：从用户终端发送CQI索引的方法
公开(公告)号：US20140269398A1
公开(公告)日：2014-09-18
申请号：US14361486
申请日：2012-02-24
申请人： Jinsoup Joung , Seunghwan Ji , Yonghoon Lim , Eunjin Lee
发明人： Jinsoup Joung , Seunghwan Ji , Yonghoon Lim , Eunjin Lee
IPC分类号： H04W24/10
CPC分类号： H04W24/10 , H04L1/0026 , H04L1/0029
摘要： A user terminal and a method for transmitting a CQI index from the user terminal to a base station. A method for performing a CQI index conversion so as to have a constant number of bits regardless of the number of bits of a calculated CQI index includes the steps of: calculating the CQI index for a signal received from the base station; converting the calculated CQI index to an one-bit CQI index through delta-sigma modulation; and transmitting the converted one-bit CQI index to the base station.
摘要翻译：一种从用户终端向基站发送CQI索引的用户终端和方法。用于执行CQI索引转换以便具有恒定数量的比特而不考虑所计算的CQI索引的比特数的方法包括以下步骤：计算从基站接收的信号的CQI索引; 通过Δ-Σ调制将所计算的CQI索引转换为1比特CQI索引; 以及将转换的一比特CQI索引发送到基站。

8. 发明申请

US20130176886A1 AUTOMATIC DETECTION APPARATUS FOR UL/DL CONFIGURATION IN LTE-TDD SIGNAL AND THE METHOD THEREBY 有权
标题翻译：用于LTE-TDD信号中UL / DL配置的自动检测装置及其方法
公开(公告)号：US20130176886A1
公开(公告)日：2013-07-11
申请号：US13822766
申请日：2011-01-06
申请人： Jinsoup Joung , Seunghwan Ji , Yonghoon Lim , Jaesung Lee
发明人： Jinsoup Joung , Seunghwan Ji , Yonghoon Lim , Jaesung Lee
IPC分类号： H04W24/00
CPC分类号： H04W24/00 , H04B17/318 , H04B17/382 , H04L5/0007 , H04L5/1469
摘要： This invention relates to an automatic detection apparatus for UL/DL configuration in LTE-TDD signal and the method thereby for automatically detecting the UL/DL configuration number of an LTE-TDD signal without a decoder by using a simple structure. An automatic detection apparatus for UL/DL configuration in LTE-TDD signal comprises: a signal receiving unit for receiving an LTE-TDD RF signal and converting the LTE-TDD RF signal into a LTE-TDD baseband signal; a signal extracting unit for extracting a cell-specific reference signal for each subframe length in one frame length of the LTE-TDD baseband signal received from the signal receiving unit; a signal power measurement unit for measuring the power of the corresponding subframe reference signal according to the cell-specific reference signal received from the signal extracting unit; and an UL/DL configuration determination unit for determining whether the corresponding subframe is a DL subframe or an UL subframe according to the comparison result of the power of the corresponding subframe reference signal measured in the signal power measurement unit with a predetermined reference value, and determining the UL/DL configuration number for the corresponding frame based on the subframe number determined as described above. In the above configuration, it is characterized in that the predetermined reference value is the noise power without any LTE-TDD signal.
摘要翻译：本发明涉及用于LTE-TDD信号中的UL / DL配置的自动检测装置及其方法，其通过使用简单的结构自动检测没有解码器的LTE-TDD信号的UL / DL配置号。一种用于LTE-TDD信号中UL / DL配置的自动检测装置，包括：信号接收单元，用于接收LTE-TDD RF信号，并将LTE-TDD RF信号转换为LTE-TDD基带信号; 信号提取单元，用于从从信号接收单元接收的LTE-TDD基带信号的一个帧长度中提取每个子帧长度的小区特定参考信号; 信号功率测量单元，用于根据从信号提取单元接收的小区特定参考信号来测量相应子帧参考信号的功率; 以及UL / DL配置确定单元，用于根据在具有预定参考值的信号功率测量单元中测量的相应子帧参考信号的功率的比较结果来确定对应的子帧是否是DL子帧或UL子帧，以及基于如上所述确定的子帧号来确定相应帧的UL / DL配置编号。在上述配置中，其特征在于，预定参考值是没有任何LTE-TDD信号的噪声功率。

9. 发明授权

US07869370B2 Portable internet analyzer having handover test function 有权
标题翻译：便携式互联网分析仪具有切换测试功能
公开(公告)号：US07869370B2
公开(公告)日：2011-01-11
申请号：US12020763
申请日：2008-01-28
申请人： Cheoljin Lee , Jinsoup Joung , Kyeongmin Ha , Seunghwan Ji , Junwan Park
发明人： Cheoljin Lee , Jinsoup Joung , Kyeongmin Ha , Seunghwan Ji , Junwan Park
IPC分类号： H04L12/26
CPC分类号： H04W24/08 , H04W36/00
摘要： Disclosed herein is a portable Internet analyzer (PIA) having a handover test function. The portable Internet analyzer includes a transmission unit, a reception unit, a switching unit, and a central control unit. The transmission unit encodes the various DownLink signals of a serving and/or target Base Station (stBS) using a preamble index, synthesizes the encoded signals, and sends the synthesized signals to a Portable Subscriber Station (PSS). The reception unit receives various UpLink (UL) signals from the PSS, and decodes the UL signals using the cell Parameters of the stBS. The switching unit selectively switches the transmission unit and the reception unit to the PSS. The central control unit generates various Media Access Control (MAC) messages to be sent to the PSS through the transmission unit in association with the handover test, analyzes handover test-related MAC messages received through the reception unit, and controls switching operation of the switching unit.
摘要翻译：这里公开了具有切换测试功能的便携式因特网分析器（PIA）。便携式因特网分析仪包括发送单元，接收单元，切换单元和中央控制单元。发送单元使用前置索引编码服务和/或目标基站（stBS）的各种DownLink信号，合成编码信号，并将合成信号发送到便携式用户站（PSS）。接收单元从PSS接收各种UpLink（UL）信号，并使用stBS的信元参数解码UL信号。开关单元有选择地将发送单元和接收单元切换到PSS。中央控制单元通过与切换测试相关联的发送单元生成要发送到PSS的各种媒体访问控制（MAC）消息，分析通过接收单元接收到的切换测试相关的MAC消息，并且控制切换的切换操作单元。

10. 发明授权

US08488660B2 Signal analyzing apparatus for LTE system 有权
标题翻译： LTE系统信号分析装置
公开(公告)号：US08488660B2
公开(公告)日：2013-07-16
申请号：US12872416
申请日：2010-08-31
申请人： Jinsoup Joung , Kyeongmin Ha , Seunghwan Ji , Jaesung Lee
发明人： Jinsoup Joung , Kyeongmin Ha , Seunghwan Ji , Jaesung Lee
IPC分类号： H04B3/46
CPC分类号： H04B17/309
摘要： A signal analysis apparatus of an LTE system includes a radio frequency reception unit for receiving a radio frequency signal of the LTE system and converting it into a signal of an intermediate frequency, a digital signal conversion unit for converting an analog signal, processed by the radio frequency reception unit, into a digital signal, a baseband conversion unit for converting the signal of the intermediate frequency into a baseband signal, a baseband signal simple analysis unit for decoding the baseband signal in real time in accordance with an LTE standard, a signal depository for storing the baseband signal, a baseband signal precision analysis unit for decoding and analyzing the baseband signal in accordance with the LTE standard and analyzing various items derived in the decoding process, two switching units for alternatively connecting the baseband conversion unit or the signal depository to the baseband signal simple analysis unit or the baseband signal precision analysis unit, and a control unit for controlling the switching units.
摘要翻译： LTE系统的信号分析装置包括：射频接收单元，用于接收LTE系统的射频信号并将其转换为中频信号;数字信号转换单元，用于转换由无线电处理的模拟信号; 频率接收单元转换为数字信号，用于将中频信号转换为基带信号的基带转换单元，用于根据LTE标准实时地对基带信号进行解码的基带信号简单分析单元，信号存储单元用于存储基带信号的基带信号精度分析单元，用于根据LTE标准对基带信号进行解码和分析，并分析在解码处理中导出的各种项目，将两个交换单元交替地连接到基带转换单元或信号存储器，基带信号简单分析单元或基带信号精度分析单元，以及用于控制开关单元的控制单元。

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