公开(公告)号：US20140300901A1

公开(公告)日：2014-10-09

申请号：US13997912

申请日：2012-08-08

申请人： Hyun Rok Cha ,  Dae Yeong Im ,  Jae Young Ahn ,  Hyoung UK Nam ,  Tae Won Jeong

发明人： Hyun Rok Cha ,  Dae Yeong Im ,  Jae Young Ahn ,  Hyoung UK Nam ,  Tae Won Jeong

IPC分类号： G01B9/02 ,  G01B1/00

CPC分类号： G01B1/00 ,  A61B1/00096 ,  A61B1/00112 ,  A61B1/00165 ,  A61B1/00172 ,  A61B5/0066 ,  A61B2562/0233 ,  G01B9/0205 ,  G01B9/02091 ,  G01B2290/65 ,  G01N21/4795

摘要： An optical coherence tomography (OCT) probe using lead zirconate titanate (PZT). In the OCT probe using PZT, a sine wave is induced from a vibrator made of a piezoelectric element, so that an image in which the scanning range is increased can be captured due to the vibration of the vibrator. A decrease in the vibration of the vibrator can be minimized by optimizing the position where the base fixes the vibrator.

摘要翻译： 使用锆钛酸铅（PZT）的光学相干断层扫描（OCT）探针。 在使用PZT的OCT探针中，由由压电元件制成的振动器引起正弦波，使得由于振动器的振动而可以捕获其中扫描范围增加的图像。 可以通过优化基座固定振动器的位置来最小化振动器的振动减小。

公开(公告)号：US08718663B2

公开(公告)日：2014-05-06

申请号：US13172400

申请日：2011-06-29

申请人： Hee Soo Lee ,  Jae Young Ahn

发明人： Hee Soo Lee ,  Jae Young Ahn

IPC分类号： H04W72/04

CPC分类号： H04W72/0426 ,  H04W8/26

摘要： Provided is a system for allocating a radio resource. The system for allocating a radio resource may include a macro base station, a macro terminal, and a femto base station. The femto base station may allocate a radio resource for transmitting a control channel to a femto terminal, and transmit information of the allocated radio resource to the macro base station. The macro base station may allocate a radio resource for transmitting a control channel to the macro terminal in relation to the received information of the radio resource.

摘要翻译： 提供了一种用于分配无线电资源的系统。 用于分配无线电资源的系统可以包括宏基站，宏终端和毫微微基站。 毫微微基站可以向毫微微终端分配用于发送控制信道的无线电资源，并将分配的无线电资源的信息发送到宏基站。 宏基站可以根据接收到的无线电资源的信息，分配用于向宏终端发送控制信道的无线电资源。

公开(公告)号：US08705644B2

公开(公告)日：2014-04-22

申请号：US13387016

申请日：2010-09-17

申请人： Byung Jang Jeong ,  Young Jo Ko ,  Bangwon Seo ,  Jae Young Ahn

发明人： Byung Jang Jeong ,  Young Jo Ko ,  Bangwon Seo ,  Jae Young Ahn

IPC分类号： H04L27/28

CPC分类号： H04L5/0048 ,  H04L5/0007 ,  H04L27/2607 ,  H04L27/265 ,  H04W72/0413

摘要： Disclosed is a method for generating and transmitting a reference signal in a clustered DFT-spread OFDM transmission scheme. A method for generating and transmitting a DM-RS in a clustered DFT-spread-OFDM scheme comprises: a step of generating DM-RS sequences corresponding to the number of clusters allocated for an uplink transmission; and a step of mapping the generated DM-RS sequences to the relevant DM-RS symbol positions for each cluster. Accordingly, the method for generating and transmitting a reference signal according to the present invention, in which DM-RS sequences are allocated and transmitted on a cluster basis, uses a complete DM-RS sequence for each cluster, and therefore inter-cell interference can be weakened, and problems which might occur when applied to a multi-user MIMO (MU-MIMO) scheme can be solved.

摘要翻译： 公开了一种用于在聚集的DFT扩展OFDM传输方案中产生和发送参考信号的方法。 一种用于在聚簇DFT扩展OFDM方案中产生和发送DM-RS的方法包括：产生对应于为上行链路传输分配的簇数量的DM-RS序列的步骤; 以及将生成的DM-RS序列映射到每个簇的相关DM-RS符号位置的步骤。 因此，根据本发明的基于簇分配和发送DM-RS序列的参考信号的生成和发送方法对于每个簇使用完整的DM-RS序列，因此小区间干扰可以 被削弱，并且可以解决当应用于多用户MIMO（MU-MIMO）方案时可能出现的问题。

公开(公告)号：US08494082B2

公开(公告)日：2013-07-23

申请号：US12991325

申请日：2009-03-06

申请人： Junyoung Nam ,  Jae Young Ahn

发明人： Junyoung Nam ,  Jae Young Ahn

IPC分类号： H04L27/00

CPC分类号： H04B7/0617 ,  H04B7/0697 ,  H04L1/0014 ,  H04L1/0017 ,  H04L1/007 ,  H04L2001/0093

摘要： A transmission apparatus, including: a first encoding unit to encode first layer data based on a first encoding scheme and generate first encoded data; a second encoding unit to encode both the first encoded data and second layer data based on a second encoding scheme and generate second encoded data; and a transmission unit to transmit the second encoded data to a receiving apparatus.

摘要翻译： 一种传输装置，包括：第一编码单元，用于基于第一编码方案对第一层数据进行编码并生成第一编码数据; 第二编码单元，基于第二编码方案对第一编码数据和第二层数据进行编码，并生成第二编码数据; 以及发送单元，用于将第二编码数据发送到接收装置。

公开(公告)号：US20120202540A1

公开(公告)日：2012-08-09

申请号：US13501646

申请日：2010-10-12

申请人： Hee Soo Lee ,  Jae Young Ahn ,  Nam Hoon Park

发明人： Hee Soo Lee ,  Jae Young Ahn ,  Nam Hoon Park

IPC分类号： H04B15/00 ,  H04W72/04

CPC分类号： H04W72/082

摘要： A method for managing neighbor cell interference comprises: a step of measuring inter-cell interference control information by subframe units; and a step of transmitting the inter-cell interference control information measured by subframe units, to at least one neighbor cell for each of the subframes. The interference management method of the present invention dynamically performs neighbor cell interference management under the condition where neighbor cell interference changes in terms of time, thus improving performance of a system. Further, the interference management method of the present invention maps a wireless resource property pattern to a cell ID. Consequently, the system adopting the method of the present invention exhibits excellent performance in any environment.

摘要翻译： 一种用于管理邻居小区干扰的方法包括：通过子帧单元测量小区间干扰控制信息的步骤; 以及将通过子帧单位测量的小区间干扰控制信息发送到每个子帧的至少一个相邻小区的步骤。 本发明的干扰管理方法在相邻小区干扰时间变化的情况下动态地执行相邻小区干扰管理，从而提高系统的性能。 此外，本发明的干扰管理方法将无线资源属性模式映射到小区ID。 因此，采用本发明方法的系统在任何环境中表现出优异的性能。

公开(公告)号：US08136022B2

公开(公告)日：2012-03-13

申请号：US11920226

申请日：2006-05-12

申请人： Byung-Jang Jeong ,  Jae Young Ahn ,  Jinho Choi

发明人： Byung-Jang Jeong ,  Jae Young Ahn ,  Jinho Choi

IPC分类号： H03M13/03

CPC分类号： H04B7/04

摘要： Provided are a detector for a multi-level modulated signal and a detection method using the same, and an iterative receiver for a multi-level modulated signal and an iteratively receiving method using the same. The detector includes: a channel estimator estimating a channel response of each of a plurality of bits included in at least one received signal based on multi-level modulation; a hard decision unit, for each bit, selecting at least one of a plurality of bits remaining by excluding the bit and performing a hard decision based on a pre-probability of the selected bit; and a reliability calculator calculating reliability of each of all the bits in the received signal based on the received signal from which the hard-decided bit component is cancelled and the estimated channel response. Accordingly, the computation amount according to detection can be reduced without the degradation of performance.

摘要翻译： 提供了一种用于多电平调制信号的检测器和使用该检测方法的检测方法，以及用于多电平调制信号的迭代接收机和使用其的迭代接收方法。 检测器包括：信道估计器，用于基于多电平调制来估计包含在至少一个接收信号中的多个比特中的每一个的信道响应; 硬决策单元，对于每个位，通过排除所述比特来选择剩余的多个比特中的至少一个，并且基于所选择的比特的预先概率执行硬判决; 以及可靠性计算器，基于从硬判决位分量被取消的接收信号和所估计的信道响应，计算接收信号中的所有比特中的每一个的可靠性。 因此，可以降低根据检测的计算量，而不会降低性能。

公开(公告)号：US07882418B2

公开(公告)日：2011-02-01

申请号：US11721162

申请日：2005-12-07

申请人： Sang Hyun Lee ,  Jae Young Ahn

发明人： Sang Hyun Lee ,  Jae Young Ahn

IPC分类号： H03M13/00

CPC分类号： H03M13/1148 ,  H03M13/6505

摘要： Provided are an LDPC encoder and decoder, and LDPC encoding and decoding methods. The LDPC encoder includes: a code generating circuit that includes a memory storing a first parity check matrix and sums a first row which is at least one row of the first parity check matrix and a second row which is at least one of the remaining rows of the first parity check matrix to output a second parity check matrix; and an encoding circuit receiving the second parity check matrix and an information word to output an LDPC-encoded code word. Also the LDPC decoder includes: a code generating circuit including a memory which stores a first parity check matrix and summing a first row which is at least one row of the first parity check matrix and a second row which is at least one of the remaining rows of the first parity check matrix to output a second parity check matrix; and a decoding circuit receiving the second parity check matrix and a code word to output an LDPC-decoded information word.

摘要翻译： 提供了一种LDPC编码器和解码器，以及LDPC编码和解码方法。 LDPC编码器包括：代码生成电路，其包括存储第一奇偶校验矩阵的存储器，并且对作为第一奇偶校验矩阵的至少一行的第一行和与作为第一奇偶校验矩阵的剩余行中的至少一行的第二行求和 所述第一奇偶校验矩阵输出第二奇偶校验矩阵; 以及接收第二奇偶校验矩阵的编码电路和输出LDPC编码码字的信息字。 此外，LDPC解码器包括：代码生成电路，包括存储器，存储第一奇偶校验矩阵并对作为第一奇偶校验矩阵的至少一行的第一行求和作为剩余行中的至少一个的第二行 的第一奇偶校验矩阵以输出第二奇偶校验矩阵; 以及接收第二奇偶校验矩阵的解码电路和输出LDPC解码信息字的码字。

公开(公告)号：US20100303032A1

公开(公告)日：2010-12-02

申请号：US12745520

申请日：2008-06-19

申请人： Bangwon Seo ,  Heesoo Lee ,  Jae Young Ahn ,  Hyun Kyu Chung ,  Chung Gu Kang ,  Hyun Seok Ryu ,  Jung Jae Yu

发明人： Bangwon Seo ,  Heesoo Lee ,  Jae Young Ahn ,  Hyun Kyu Chung ,  Chung Gu Kang ,  Hyun Seok Ryu ,  Jung Jae Yu

IPC分类号： H04W72/04

CPC分类号： H04B7/026

摘要： A selective cooperative relaying method, the method including: determining, by a base station, whether a mobile station for which the base station provides a service is the mobile station necessary for direct transmission or is the mobile station necessary for cooperative relaying via a relay station; and selecting, by a base station, mobile stations using a simple relaying scheme, a cooperative transmission diversity scheme, or a cooperative receiving diversity scheme from mobile stations necessary for the cooperative relaying via the relay station.

摘要翻译： 一种选择性协同中继方法，所述方法包括：基站确定基站提供业务的移动台是直接发送所需要的移动台，还是经由中继站进行合作中继所需的移动台 ; 以及由基站使用简单中继方案，协作传输分集方案或协作接收分集方案从移动台选择经由中继站的协作中继所需的移动台。

公开(公告)号：US20090116565A1

公开(公告)日：2009-05-07

申请号：US11914922

申请日：2005-12-13

申请人： Jae Young Ahn ,  Yong-Soo Cho ,  Hyun-Soo Ko

发明人： Jae Young Ahn ,  Yong-Soo Cho ,  Hyun-Soo Ko

IPC分类号： H04L27/28 ,  H04L7/00

CPC分类号： H04B7/0491 ,  H04B7/0408 ,  H04B7/0617 ,  H04L5/023 ,  H04W16/10 ,  H04W16/24 ,  H04W16/28

摘要： A method for selecting beams, a switched beam operation method during an initial synchronization process, and an initial synchronization method using it are provided for selecting beams to minimize the probability of occurrence of interferences between cells by considering a distance between beams within neighboring sectors during an initial synchronization process using switched beams, in an orthogonal frequency division multiplexing (OFDM) cellular system employing a smart antenna. The inventive method comprises the steps of dividing each cell into sectors, and counting the number of fixed beams per cell, and selecting a switched beam for minimizing probability of interference, from fixed beams presenting in a corresponding sector, based on distances between a selected beam and beams of all of adjacent cells and the number of cases to be selected in a subsequent time slot, according to the counted number of the fixed beams existing in each sector.

摘要翻译： 提供一种用于选择波束的方法，初始同步过程中的切换波束操作方法以及使用该方法的初始同步方法，用于选择波束以通过考虑在相邻扇区内的波束之间的距离来最小化小区之间干扰发生的概率 在使用智能天线的正交频分复用（OFDM）蜂窝系统中使用切换波束的初始同步过程。 本发明的方法包括以下步骤：将每个小区划分成扇区，并且对每个小区的固定波束数进行计数，并且根据所选择的波束之间的距离，选择用于最小化相应扇区中呈现的固定波束的干扰概率的切换波束 根据存在于每个扇区中的固定光束的数目，所有相邻小区的波束和后续时隙中的选择的个数。

公开(公告)号：US20090010149A1

公开(公告)日：2009-01-08

申请号：US12064206

申请日：2006-08-18

申请人： Hyo Jin Lee ,  Jae Young Ahn ,  Yong Soo Cho ,  Kyu-Jin Lee ,  Kyung-Won Park

发明人： Hyo Jin Lee ,  Jae Young Ahn ,  Yong Soo Cho ,  Kyu-Jin Lee ,  Kyung-Won Park

IPC分类号： H04J11/00

CPC分类号： H04B7/068 ,  H04L25/03159 ,  H04L25/03343 ,  H04L27/2602 ,  H04L2025/03414 ,  H04L2025/03522 ,  H04L2025/03605

摘要： Provided are a virtual multi-antenna method for an orthogonal frequency division multiplexing (OFDM) system and an OFDM-based cellular system. The virtual multi-antenna method includes grouping sub-carriers in a frequency domain of an OFDM symbol and generating at least one group including G sub-carriers; and regarding the G sub-carriers included in the at least one group as multiple channels used in a multi-antenna technique and virtually applying the multi-antenna technique to the transmission and reception of the OFDM symbol. The virtual multi-antenna method can effectively reduce an interference signal and obtain the effects of a spatial division multiple access (SDMA) technique without physically using multiple antennas.

摘要翻译： 提供了一种用于正交频分复用（OFDM）系统和基于OFDM的蜂窝系统的虚拟多天线方法。 虚拟多天线方法包括在OFDM符号的频域中分组子载波并且生成包括G个子载波的至少一个组; 并且将包括在至少一个组中的G个子载波作为在多天线技术中使用的多个信道，并将多天线技术虚拟地应用于OFDM符号的发送和接收。 虚拟多天线方法可以有效地减少干扰信号并获得空分多址（SDMA）技术的效果，而无需物理上使用多个天线。