公开(公告)号：US09907041B2

公开(公告)日：2018-02-27

申请号：US14811500

申请日：2015-07-28

申请人： Jeong-Soon Park ,  Hwan-Min Park ,  Sang-Woo Kim ,  Myung-Joon Shim ,  Suk-Bum Hong ,  Jong-Yoon Hwang

发明人： Jeong-Soon Park ,  Hwan-Min Park ,  Sang-Woo Kim ,  Myung-Joon Shim ,  Suk-Bum Hong ,  Jong-Yoon Hwang

IPC分类号： H04L12/28 ,  H04W56/00 ,  H04B1/7073 ,  H04B1/7107

CPC分类号： H04W56/003 ,  H04B1/7073 ,  H04B1/71072

摘要： The present disclosure provides a method and a receiver for detecting synchronization in a Time Division-Synchronous Code Division Multiple Access (TD-SCDMA) system. The receiver includes a reception unit that receives a synchronization signal including an interference signal from at least one adjacent cell; and a synchronization detector that cancels the interference signal included in the synchronization signal based on a serial interference cancellation, and detects the synchronization based on the synchronization signal, from which the interference signal is canceled.

公开(公告)号：US07966545B2

公开(公告)日：2011-06-21

申请号：US11829569

申请日：2007-07-27

申请人： Dong-Kyoon Cho ,  Jong-Yoon Hwang

发明人： Dong-Kyoon Cho ,  Jong-Yoon Hwang

IPC分类号： H03M13/00

CPC分类号： H04L1/0631 ,  H04L1/0656

摘要： A method for performing Forward Error Correction (FEC) in a Turbo-Bell Labs Layered Space-Time (BLAST) Multiple-Input Multiple-Output (MIMO) communication system. The FEC method includes performing soft decision on a frame received via a plurality of antennas; performing iterative decoding on the soft decision result value a predetermined number of times, and outputting Log Likelihood Ratio (LLR) values for information bits and first parity bits constituting the frame; generating second parity bits by coding information bits calculated from the LLR values, and comparing the first parity bits calculated from the LLR values with the coded second parity bits; and if the first parity bits are identical to the second parity bits, outputting the information bits, determining that there is no error, and if the first parity bits are not identical to the second parity bits, feeding back the LLR values as a-priori information of the soft decision, and returning to the performing of soft decision.

摘要翻译： 一种用于在Turbo-Bell实验室分层时空（BLAST）多输入多输出（MIMO）通信系统中执行前向纠错（FEC）的方法。 FEC方法包括对经由多个天线接收到的帧执行软判决; 对软判决结果值进行预定次数的迭代解码，并输出构成该帧的信息位和第一奇偶校验位的对数似然比（LLR）值; 通过对从LLR值计算的信息比特进行编码，并将从LLR值计算的第一奇偶校验位与编码的第二奇偶校验位进行比较，产生第二奇偶校验位; 并且如果第一奇偶校验位与第二奇偶校验位相同，则输出信息比特，确定没有错误，并且如果第一奇偶校验位与第二奇偶校验位不相同，则将LLR值反馈给先验 软判决的信息，并返回执行软判决。

公开(公告)号：US08724685B2

公开(公告)日：2014-05-13

申请号：US13278487

申请日：2011-10-21

申请人： Young-Min Ki ,  Byonghyo Shim ,  Jong-Yoon Hwang ,  Seung-Hwan Won ,  Chae-Man Lim

发明人： Young-Min Ki ,  Byonghyo Shim ,  Jong-Yoon Hwang ,  Seung-Hwan Won ,  Chae-Man Lim

IPC分类号： H03H7/30

CPC分类号： H04L25/03891 ,  H04B1/7097 ,  H04B7/0413 ,  H04B7/0848 ,  H04L1/0618 ,  H04L25/03968

摘要： An apparatus and a method for interference cancellation in a Multiple Input Multiple Output (MIMO) wireless communication system. The method for interference cancellation includes equalizing first reception signals received through two or more reception antennas to estimate transmission signals transmitted through two or more transmission antennas, generating two or more second reception signals in which a mutual interference between the transmission signals is removed from the first reception signals by using the estimated transmission signals, independently equalizing the generated two or more second reception signals, and combining the independently equalized two or more second reception signals to estimate a transmission signal in which an interference is removed.

摘要翻译： 一种用于多输入多输出（MIMO）无线通信系统中的干扰消除的装置和方法。 用于干扰消除的方法包括均衡通过两个或更多个接收天线接收的第一接收信号，以估计通过两个或更多个发送天线发送的传输信号，生成两个或更多个第二接收信号，其中从第一个发送信号中去除传输信号之间的相互干扰 通过使用估计的传输信号接收信号，独立地均衡所生成的两个或更多个第二接收信号，并组合独立均衡的两个或更多个第二接收信号，以估计干扰被去除的传输信号。

公开(公告)号：US20080028277A1

公开(公告)日：2008-01-31

申请号：US11829569

申请日：2007-07-27

申请人： Dong-Kyoon CHO ,  Jong-Yoon Hwang

发明人： Dong-Kyoon CHO ,  Jong-Yoon Hwang

IPC分类号： G06F11/10 ,  G06F11/00

CPC分类号： H04L1/0631 ,  H04L1/0656

摘要： A method for performing Forward Error Correction (FEC) in a Turbo-Bell Labs Layered Space-Time (BLAST) Multiple-Input Multiple-Output (MIMO) communication system. The FEC method includes performing soft decision on a frame received via a plurality of antennas; performing iterative decoding on the soft decision result value a predetermined number of times, and outputting Log Likelihood Ratio (LLR) values for information bits and first parity bits constituting the frame; generating second parity bits by coding information bits calculated from the LLR values, and comparing the first parity bits calculated from the LLR values with the coded second parity bits; and if the first parity bits are identical to the second parity bits, outputting the information bits, determining that there is no error, and if the first parity bits are not identical to the second parity bits, feeding back the LLR values as a-priori information of the soft decision, and returning to the performing of soft decision.

摘要翻译： 一种用于在Turbo-Bell实验室分层时空（BLAST）多输入多输出（MIMO）通信系统中执行前向纠错（FEC）的方法。 FEC方法包括对经由多个天线接收到的帧执行软判决; 对软判决结果值进行预定次数的迭代解码，并输出构成该帧的信息位和第一奇偶校验位的对数似然比（LLR）值; 通过对从LLR值计算的信息比特进行编码，并将从LLR值计算的第一奇偶校验位与编码的第二奇偶校验位进行比较，产生第二奇偶校验位; 并且如果第一奇偶校验位与第二奇偶校验位相同，则输出信息比特，确定没有错误，并且如果第一奇偶校验位与第二奇偶校验位不相同，则将LLR值反馈给先验 软判决的信息，并返回执行软判决。

公开(公告)号：US07283836B2

公开(公告)日：2007-10-16

申请号：US10673532

申请日：2003-09-29

申请人： Jong-Yoon Hwang ,  Hi-Chan Moon ,  Jong-Han Kim ,  Jin-Soo Park

发明人： Jong-Yoon Hwang ,  Hi-Chan Moon ,  Jong-Han Kim ,  Jin-Soo Park

IPC分类号： H04B7/00 ,  H04Q7/20

CPC分类号： H04W52/283 ,  H04L1/20 ,  H04L1/201 ,  H04W52/143 ,  H04W52/24 ,  H04W52/241 ,  H04W52/247 ,  H04W52/282 ,  H04W52/288 ,  H04W52/44 ,  H04W52/54 ,  Y02D70/20

摘要： An apparatus and method of detecting whether data exists in a received signal while a mobile communication terminal is in discontinuous transmission mode. The apparatus and method comprises generating and transmitting a forward power control command for providing the forward power control, and performing forward power control in a mobile communication system. According to the forward power control method, a power control command is generated based on a received frame including a plurality of slots each of which includes power control bits. The ratio of the power control bit energy to noise energy, which is given by a ratio of the accumulated energy of the power control bits in the slots of the received frame to an accumulated energy value of noise in the slots of the received frame, is provided, and the power control command based on a ratio of the accumulated energy value of traffic symbol bits in the slots to the accumulated energy value of the power control bits is generated when the provided ratio of the power control bits to noise is acceptable.

摘要翻译： 一种在移动通信终端处于不连续传输模式时检测接收信号中是否存在数据的装置和方法。 该装置和方法包括生成和发送用于提供正向功率控制的前向功率控制命令，以及在移动通信系统中执行正向功率控制。 根据正向功率控制方法，基于包括多个时隙的接收帧生成功率控制命令，每个时隙包括功率控制位。 由接收帧的时隙中的功率控制位的累积能量与接收帧的时隙中累积的噪声能量值的比率给出的功率控制比特能量与噪声能量的比率是 并且当所提供的功率控制比特与噪声的比率是可接受的时，产生基于时隙中的业务符号比特的累积能量值与功率控制比特的累积能量值的比率的功率控制命令。

公开(公告)号：US06633553B1

公开(公告)日：2003-10-14

申请号：US09476435

申请日：1999-12-30

申请人： Jong-Yoon Hwang

发明人： Jong-Yoon Hwang

IPC分类号： H04Q7212

CPC分类号： H04W52/12 ,  H04W52/143 ,  H04W52/24 ,  H04W52/26 ,  H04W52/58 ,  H04W52/60

摘要： A forward power controlling apparatus in a CDMA mobile communication system is provided. In the forward power controlling apparatus, an SIR measurer measures the SIR of each received frame on a forward user channel using all the demodulated symbols of the frame, a symbol rate detector detects symbol rate information inserted in a predetermined position of the frame, and a controller changes a threshold according to the detected symbol rate information, compares the threshold with the SIR, and generates a forward power control command.

摘要翻译： 提供了CDMA移动通信系统中的正向功率控制装置。 在正向功率控制装置中，SIR测量器使用所述帧的所有解调符号来测量前向用户信道上的每个接收帧的SIR，符号速率检测器检测插入在帧的预定位置的符号速率信息，以及 控制器根据检测到的符号速率信息改变阈值，将阈值与SIR进行比较，并产生正向功率控制命令。

公开(公告)号：US07643566B2

公开(公告)日：2010-01-05

申请号：US11401484

申请日：2006-04-11

申请人： Jong-Yoon Hwang ,  Kwang-Soon Kim ,  Keum-Chan Whang

发明人： Jong-Yoon Hwang ,  Kwang-Soon Kim ,  Keum-Chan Whang

IPC分类号： H04K1/10

CPC分类号： H04L27/2657 ,  H04L27/2676

摘要： An apparatus and method for estimating a frequency offset in an Orthogonal Frequency Division Multiplexing (OFDM) system are provided. Two time domain signals are generated from one received OFDM symbol through two observation windows with different delay times. The two time domain signals are compensated for a candidate frequency offset. A discrete Fourier transform process and a phase compensation process in a frequency domain are performed. A difference between two frequency domain signals compensated for a phase difference is computed with respect to each candidate frequency offset. For all candidate frequency offsets, difference values are compared with each other. A candidate frequency offset mapped to a minimum difference value is detected as an optimal frequency offset. The frequency offset can be more exactly estimated without consuming a bandwidth and increasing hardware complexity of a receiver.

摘要翻译： 提供了一种用于估计正交频分复用（OFDM）系统中的频率偏移的装置和方法。 通过具有不同延迟时间的两个观察窗从一个接收的OFDM符号生成两个时域信号。 对候选频率偏移补偿两个时域信号。 执行频域中的离散付里叶变换处理和相位补偿处理。 针对每个候选频率偏移计算补偿相位差的两个频域信号之间的差异。 对于所有候选频率偏移量，将差值进行比较。 映射到最小差值的候选频率偏移被检测为最佳频率偏移。 可以更精确地估计频率偏移，而不消耗带宽并增加接收机的硬件复杂度。

公开(公告)号：US07133460B2

公开(公告)日：2006-11-07

申请号：US09986216

申请日：2001-10-22

申请人： Sang-Min Bae ,  Young-Kwon Cho ,  Ho-Kyu Choi ,  Youn-Sun Kim ,  Jin-Woo Heo ,  Jong-Yoon Hwang ,  Hyun-Woo Lee ,  Sung-Jin Kim ,  Chu-Hyon Yi ,  Sun-Gi Ku ,  Hwan-Joon Kwon ,  Ju-Ho Lee

发明人： Sang-Min Bae ,  Young-Kwon Cho ,  Ho-Kyu Choi ,  Youn-Sun Kim ,  Jin-Woo Heo ,  Jong-Yoon Hwang ,  Hyun-Woo Lee ,  Sung-Jin Kim ,  Chu-Hyon Yi ,  Sun-Gi Ku ,  Hwan-Joon Kwon ,  Ju-Ho Lee

IPC分类号： H04L27/04 ,  H04B1/707

CPC分类号： H04B7/264 ,  H04B1/707 ,  H04B2201/70705

摘要： Disclosed is a mobile station for determining a data rate for a packet data service in a mobile communication system including a base station, and the mobile station being provided with a voice service and a packet data service from the base station. In the mobile station, a receiver receives orthogonal code allocation information indicating the number of orthogonal codes allocated for the packet data service, a measurer measures a CIR using a received pilot channel, and a controller determines a data rate corresponding to the measured CIR, controls the determined data rate based on the number of the allocated orthogonal codes, and determines a controlled data rate.

公开(公告)号：US20060239368A1

公开(公告)日：2006-10-26

申请号：US11401484

申请日：2006-04-11

申请人： Jong-Yoon Hwang ,  Kwang-Soon Kim ,  Keum-Chan Whang

发明人： Jong-Yoon Hwang ,  Kwang-Soon Kim ,  Keum-Chan Whang

IPC分类号： H04K1/10

CPC分类号： H04L27/2657 ,  H04L27/2676

摘要： An apparatus and method for estimating a frequency offset in an Orthogonal Frequency Division Multiplexing (OFDM) system are provided. Two time domain signals are generated from one received OFDM symbol through two observation windows with different delay times. The two time domain signals are compensated for a candidate frequency offset. A discrete Fourier transform process and a phase compensation process in a frequency domain are performed. A difference between two frequency domain signals compensated for a phase difference is computed with respect to each candidate frequency offset. For all candidate frequency offsets, difference values are compared with each other. A candidate frequency offset mapped to a minimum difference value is detected as an optimal frequency offset. The frequency offset can be more exactly estimated without consuming a bandwidth and increasing hardware complexity of a receiver.

摘要翻译： 提供了一种用于估计正交频分复用（OFDM）系统中的频率偏移的装置和方法。 通过具有不同延迟时间的两个观察窗从一个接收的OFDM符号生成两个时域信号。 对候选频率偏移补偿两个时域信号。 执行频域中的离散付里叶变换处理和相位补偿处理。 针对每个候选频率偏移计算补偿相位差的两个频域信号之间的差异。 对于所有候选频率偏移量，将差值进行比较。 映射到最小差值的候选频率偏移被检测为最佳频率偏移。 可以更精确地估计频率偏移，而不消耗带宽并增加接收机的硬件复杂度。

公开(公告)号：US06791964B1

公开(公告)日：2004-09-14

申请号：US09475560

申请日：1999-12-30

申请人： Jong-Yoon Hwang ,  Sang-Min Bae ,  Jin-Woo Heo

发明人： Jong-Yoon Hwang ,  Sang-Min Bae ,  Jin-Woo Heo

IPC分类号： H04B7216

CPC分类号： H04L27/2657 ,  H04B1/7085 ,  H04B1/7087 ,  H04L5/0021 ,  H04L27/2613 ,  H04L27/2662 ,  H04L27/2675

摘要： A receiving device in a multi-carrier CDMA communication system. In the receiving device, a time compensation means has a time tracker for each of signals received on multi-carriers and generates a time delay compensation signal by combining time errors of the carriers received from the time trackers. A first PN sequence generator generates a first PN sequence whose time delay is compensated for by the time delay compensation signal. A plurality of PN despreaders PN-despread the signals received on the multi-carriers by the first PN sequence. A frequency compensation means detects pilot signals corresponding to the PN-despread signals, generates frequency error signals for the carriers by the detected pilot signals, and compensates for frequency errors of the signals received on the multi-carriers. A phase compensation means compensates for phases for the carriers using the PN-despread signals and the pilot signals. A multiplexer multiplexes the phase-compensated signals.

摘要翻译： 一种多载波CDMA通信系统中的接收装置。 在接收装置中，时间补偿装置具有用于在多载波上接收的每个信号的时间跟踪器，并且通过组合从时间跟踪器接收的载波的时间误差来产生时间延迟补偿信号。 第一PN序列发生器产生其时间延迟由时间延迟补偿信号补偿的第一PN序列。 多个PN去扩频器通过第一PN序列PN扩展在多载波上接收的信号。 频率补偿装置检测对应于PN解扩信号的导频信号，通过检测到的导频信号产生载波的频率误差信号，并补偿在多载波上接收的信号的频率误差。 相位补偿装置使用PN解扩信号和导频信号来补偿载波的相位。 复用器复用相位补偿信号。