公开(公告)号：US20110122760A1

公开(公告)日：2011-05-26

申请号：US12623658

申请日：2009-11-23

申请人： Hyuck Chan KWON ,  Hee Gul Park ,  Jung Seung Lee ,  Byoung Seong Park

发明人： Hyuck Chan KWON ,  Hee Gul Park ,  Jung Seung Lee ,  Byoung Seong Park

IPC分类号： H04J11/00 ,  H04J1/00

CPC分类号： H04J11/0043

摘要： An apparatus and a method for interference cancellation using a multi-user multiple input multiple output (MU-MIMO) scheme in a single carrier frequency division multiple access (SC-FDMA) system are disclosed. Received data of every terminal are classified into first received data and second received data. The first received data has lower reliability and the second received data has higher reliability than the first received data. The second received data is transmitted to an upper layer. Interference signals are formed with the second received data based on a channel estimation value. The interference signals are removed from the first received data, and the interference signal free first received data is transmitted to the upper layer.

摘要翻译： 公开了一种在单载波频分多址（SC-FDMA）系统中使用多用户多输入多输出（MU-MIMO）方案进行干扰消除的装置和方法。 每个终端的接收数据分为第一接收数据和第二接收数据。 第一个接收的数据具有较低的可靠性，第二个接收到的数据比第一个接收到的数据具有更高的可靠性。 第二个接收到的数据被发送到上一层。 基于信道估计值，用第二接收数据形成干扰信号。 干扰信号从第一个接收到的数据中去除，无干扰信号的第一个接收的数据被传送到上层。

公开(公告)号：US08457076B2

公开(公告)日：2013-06-04

申请号：US11654000

申请日：2007-01-17

申请人： Sung Lark Kwon ,  Dong Joo Park ,  Hyuck Chan Kwon ,  Young Kwon Ryu ,  Hoo Young Jeong ,  Hong Jik Kim ,  Jung Seung Lee ,  Jae Won Jang ,  Byoung Seong Park ,  Hee Gul Park

发明人： Sung Lark Kwon ,  Dong Joo Park ,  Hyuck Chan Kwon ,  Young Kwon Ryu ,  Hoo Young Jeong ,  Hong Jik Kim ,  Jung Seung Lee ,  Jae Won Jang ,  Byoung Seong Park ,  Hee Gul Park

IPC分类号： H04B7/216 ,  H04J1/06 ,  H04J11/00 ,  H04W4/00

CPC分类号： H04W72/082 ,  H04J13/0059 ,  H04L5/0005 ,  H04L5/0007 ,  H04L5/0037 ,  H04L5/023 ,  H04L27/2613 ,  H04L27/2626 ,  H04L27/2655

摘要： Embodiments of the present invention may provide an apparatus and a method for transmitting and receiving a random access channel (RACH) in a single carrier-frequency division multiple access (SC-FDMA) system. A frequency domain RACH signal may be mapped to a localized sub-frequency band of an entire frequency band available to the SC-FDMA system. A guard band including at least one sub carrier may be allocated between the RACH signal band and other channel signal bands. A guard time may be allocated between the RACH signal and other channel signals in the time domain. The RACH signal may include a short message including information related to a mobile station. The RACH signal may be detected in a frequency based method, a time based method or a sliding matched filter based method. Receiver complexity can be decreased if the RACH signal includes a CAZAC code sequence for a preamble. In such a case, a receive delay may be simply calculated and then adjusted more accurately.

摘要翻译： 本发明的实施例可以提供在单载波频分多址（SC-FDMA）系统中发送和接收随机接入信道（RACH）的装置和方法。 频域RACH信号可以映射到SC-FDMA系统可用的整个频带的本地化子频带。 可以在RACH信号频带和其它信道信号频带之间分配包括至少一个子载波的保护频带。 可以在RACH信号和时域中的其它信道信号之间分配保护时间。 RACH信号可以包括包括与移动台有关的信息的短消息。 可以基于频率的方法，基于时间的方法或基于滑动匹配滤波器的方法来检测RACH信号。 如果RACH信号包括用于前同步码的CAZAC码序列，则接收机复杂度可以降低。 在这种情况下，可以简单地计算接收延迟，然后更精确地进行调整。

公开(公告)号：US08416867B2

公开(公告)日：2013-04-09

申请号：US12623658

申请日：2009-11-23

申请人： Hyuck Chan Kwon ,  Hee Gul Park ,  Jung Seung Lee ,  Byoung Seong Park

发明人： Hyuck Chan Kwon ,  Hee Gul Park ,  Jung Seung Lee ,  Byoung Seong Park

IPC分类号： H04K1/10

CPC分类号： H04J11/0043

摘要： An apparatus and a method for interference cancellation using a multi-user multiple input multiple output (MU-MIMO) scheme in a single carrier frequency division multiple access (SC-FDMA) system are disclosed. Received data of every terminal are classified into first received data and second received data. The first received data has lower reliability and the second received data has higher reliability than the first received data. The second received data is transmitted to an upper layer. Interference signals are formed with the second received data based on a channel estimation value. The interference signals are removed from the first received data, and the interference signal free first received data is transmitted to the upper layer.

摘要翻译： 公开了一种在单载波频分多址（SC-FDMA）系统中使用多用户多输入多输出（MU-MIMO）方案进行干扰消除的装置和方法。 每个终端的接收数据分为第一接收数据和第二接收数据。 第一个接收的数据具有较低的可靠性，第二个接收到的数据比第一个接收到的数据具有更高的可靠性。 第二个接收到的数据被发送到上一层。 基于信道估计值，用第二接收数据形成干扰信号。 干扰信号从第一个接收到的数据中去除，无干扰信号的第一个接收的数据被传送到上层。

公开(公告)号：US20070171889A1

公开(公告)日：2007-07-26

申请号：US11654000

申请日：2007-01-17

申请人： Sung Lark Kwon ,  Dong Joo Park ,  Hyuck Chan Kwon ,  Young Kwon Ryu ,  Hoo Young Jeong ,  Hong Jik Kim ,  Jung Seung Lee ,  Jae Won Jang ,  Byoung Seong Park ,  Hee Gul Park

发明人： Sung Lark Kwon ,  Dong Joo Park ,  Hyuck Chan Kwon ,  Young Kwon Ryu ,  Hoo Young Jeong ,  Hong Jik Kim ,  Jung Seung Lee ,  Jae Won Jang ,  Byoung Seong Park ,  Hee Gul Park

IPC分类号： H04J3/06

CPC分类号： H04W72/082 ,  H04J13/0059 ,  H04L5/0005 ,  H04L5/0007 ,  H04L5/0037 ,  H04L5/023 ,  H04L27/2613 ,  H04L27/2626 ,  H04L27/2655

摘要： Embodiments of the present invention may provide an apparatus and a method for transmitting and receiving a random access channel (RACH) in a single carrier-frequency division multiple access (SC-FDMA) system. A frequency domain RACH signal may be mapped to a localized sub-frequency band of an entire frequency band available to the SC-FDMA system. A guard band including at least one sub carrier may be allocated between the RACH signal band and other channel signal bands. A guard time may be allocated between the RACH signal and other channel signals in the time domain. The RACH signal may include a short message including information related to a mobile station. The RACH signal may be detected in a frequency based method, a time based method or a sliding matched filter based method. Receiver complexity can be decreased if the RACH signal includes a CAZAC code sequence for a preamble. In such a case, a receive delay may be simply calculated and then adjusted more accurately.

摘要翻译： 本发明的实施例可以提供在单载波频分多址（SC-FDMA）系统中发送和接收随机接入信道（RACH）的装置和方法。 频域RACH信号可以映射到SC-FDMA系统可用的整个频带的本地化子频带。 可以在RACH信号频带和其它信道信号频带之间分配包括至少一个子载波的保护频带。 可以在RACH信号和时域中的其它信道信号之间分配保护时间。 RACH信号可以包括包括与移动台有关的信息的短消息。 可以基于频率的方法，基于时间的方法或基于滑动匹配滤波器的方法来检测RACH信号。 如果RACH信号包括用于前同步码的CAZAC码序列，则接收机复杂度可以降低。 在这种情况下，可以简单地计算接收延迟，然后更精确地进行调整。

公开(公告)号：US20130250921A1

公开(公告)日：2013-09-26

申请号：US13894973

申请日：2013-05-15

申请人： Sung Lark KWON ,  Dong Joo Park ,  Hyuck Chan Kwon ,  Young Kwon Ryu ,  Hoo Young Jeong ,  Hong Jik Kim ,  Jung Seong Lee ,  Jae Won Jang ,  Byoung Seong Park ,  Hee Gul Park

发明人： Sung Lark KWON ,  Dong Joo Park ,  Hyuck Chan Kwon ,  Young Kwon Ryu ,  Hoo Young Jeong ,  Hong Jik Kim ,  Jung Seong Lee ,  Jae Won Jang ,  Byoung Seong Park ,  Hee Gul Park

IPC分类号： H04W72/08

CPC分类号： H04W72/082 ,  H04J13/0059 ,  H04L5/0005 ,  H04L5/0007 ,  H04L5/0037 ,  H04L5/023 ,  H04L27/2613 ,  H04L27/2626 ,  H04L27/2655

摘要： Embodiments of the present invention may provide an apparatus and a method for transmitting and receiving a random access channel (RACH) in a single carrier-frequency division multiple access (SC-FDMA) system. A frequency domain RACH signal may be mapped to a localized sub-frequency band of an entire frequency band available to the SC-FDMA system. A guard band including at least one sub carrier may be allocated between the RACH signal band and other channel signal bands. A guard time may be allocated between the RACE signal and other channel signals in the time domain. The RACH signal may include a short message including information related to a mobile station. The RACE signal may be detected in a frequency based method, a time based method or a sliding matched filter based method. Receiver complexity can be decreased if the RACH signal includes a CAZAC code sequence for a preamble. In such a case, a receive delay may be simply calculated and then adjusted more accurately.

摘要翻译： 本发明的实施例可以提供在单载波频分多址（SC-FDMA）系统中发送和接收随机接入信道（RACH）的装置和方法。 频域RACH信号可以映射到SC-FDMA系统可用的整个频带的本地化子频带。 可以在RACH信号频带和其它信道信号频带之间分配包括至少一个子载波的保护频带。 可以在RACE信号和时域中的其他信道信号之间分配保护时间。 RACH信号可以包括包括与移动台有关的信息的短消息。 可以以基于频率的方法，基于时间的方法或基于滑动匹配滤波器的方法来检测RACE信号。 如果RACH信号包括用于前同步码的CAZAC码序列，则接收机复杂度可以降低。 在这种情况下，可以简单地计算接收延迟，然后更精确地进行调整。

公开(公告)号：US07340498B2

公开(公告)日：2008-03-04

申请号：US10446108

申请日：2003-05-28

申请人： Tan Joong Park ,  Sung Lark Kwon ,  Hee Gul Park

发明人： Tan Joong Park ,  Sung Lark Kwon ,  Hee Gul Park

IPC分类号： G06F7/499

CPC分类号： H03M7/24

摘要： Apparatus and method for determining a fixed point in a mobile communication system are disclosed. An initial fixed point is set through simulation and a saturation for an output of a target device is compared with a reference saturation. Then, the position of the initial fixed point is adaptively changed according to the change in the output range of the target device. Therefore, when a floating point is converted into a fixed point, the performance of the system can be improved while the complexity of the hardware can be reduced.

摘要翻译： 公开了一种用于确定移动通信系统中的固定点的装置和方法。 通过仿真设置初始固定点，并将目标设备的输出的饱和度与参考饱和度进行比较。 然后，根据目标装置的输出范围的变化，自适应地改变初始固定点的位置。 因此，当将浮点转换为固定点时，可以提高系统的性能，同时降低硬件的复杂度。

公开(公告)号：US06380892B1

公开(公告)日：2002-04-30

申请号：US09540986

申请日：2000-03-31

申请人： Jin Ho Choi ,  Hee Gul Park ,  Yoon Oh Yang

发明人： Jin Ho Choi ,  Hee Gul Park ,  Yoon Oh Yang

IPC分类号： H01Q324

CPC分类号： H01Q3/2605

摘要： An adaptive beamforming apparatus and method of an array antenna in a communication system. First, a tentative symbol decision value is obtained by processing a traffic signal vector, and a final updated coefficient value is obtained by performing a least mean square (LMS) algorithm at least once with respect to the tentative symbol decision value and a pilot signal vector on the assumption that the tentative symbol decision value is a transmitted symbol value. Then an adaptive beam which corresponds to a final symbol decision value is formed using the traffic signal vector and the final updated coefficient value.

摘要翻译： 一种通信系统中的阵列天线的自适应波束成形装置和方法。 首先，通过处理交通信号矢量获得暂定符号判定值，并且通过相对于暂定符号判定值至少一次执行最小均方（LMS）算法和导频信号矢量来获得最终更新系数值 假设假定符号判定值是发送符号值。 然后使用交通信号矢量和最终更新的系数值形成对应于最终符号判定值的自适应波束。