公开(公告)号：US20110053628A1

公开(公告)日：2011-03-03

申请号：US12869186

申请日：2010-08-26

申请人： Hee-Wook Kim ,  Kunseok Kang ,  Do-Seob Ahn ,  Ho-Jin Lee

发明人： Hee-Wook Kim ,  Kunseok Kang ,  Do-Seob Ahn ,  Ho-Jin Lee

IPC分类号： H04B7/00

CPC分类号： H04B7/18539 ,  H04B7/2041

摘要： A service providing method in a satellite communication system includes: confirming positions of terminals when the terminals existing within a service area and intended to receive a service is connected to a satellite base station or a complementary terrestrial component; confirming first terminals, which communicate with the satellite base station, and second terminals, which communicate with the complementary terrestrial component, according to the positions of the terminals; allocating resources usable when communicating with the first terminals and resources usable when communicating with the second terminals; and providing a service to the terminals by using the allocated resources through multi-beams of the satellite base station and multi-beams of the complementary terrestrial component.

摘要翻译： 卫星通信系统中的服务提供方法包括：当存在于业务区域内并且要接收业务的终端连接到卫星基站或互补地面组件时，确认终端的位置; 确定与卫星基站通信的第一终端，以及根据终端的位置与互补地面组件通信的第二终端; 分配与第一终端通信时可用的资源和与第二终端通信时可用的资源; 以及通过使用经由分配的资源通过卫星基站的多波束和互补地面分量的多波束向终端提供服务。

公开(公告)号：US09136936B2

公开(公告)日：2015-09-15

申请号：US13328261

申请日：2011-12-16

申请人： Hee-Wook Kim ,  Kun-Seok Kang ,  Bon-Jun Ku ,  Do-Seob Ahn

发明人： Hee-Wook Kim ,  Kun-Seok Kang ,  Bon-Jun Ku ,  Do-Seob Ahn

IPC分类号： H04W84/06 ,  H04B7/185 ,  H04L5/00 ,  H01Q25/00 ,  H04W72/04

CPC分类号： H04B7/18515 ,  H01Q25/00 ,  H04L5/0023 ,  H04L5/0037 ,  H04W72/0453 ,  H04W84/06

摘要： A transmission apparatus and method for implementing frequency selectivity in a multi-beam satellite system that transmits a signal to user equipment through one or more antenna feed groups. The transmission apparatus includes: an antenna feed group selecting unit configured to select one or more antenna feed groups from the one or more antenna feed groups; a cyclic delay offset determining unit configured to determine a cyclic delay offset according to a determination result of the antenna feed group selecting unit; and a transmitting unit configured to apply the cyclic delay offset determined by the cyclic delay offset determining unit to a signal to be transmitted through the one or more antenna feed groups selected by the antenna feed group selecting unit, and to transmit a resultant signal.

摘要翻译： 一种用于在通过一个或多个天线馈送组向用户设备发送信号的多波束卫星系统中实现频率选择性的传输装置和方法。 发送装置包括：天线馈送组选择单元，被配置为从所述一个或多个天线馈送组中选择一个或多个天线馈送组; 循环延迟偏移确定单元，被配置为根据天线馈送组选择单元的确定结果确定循环延迟偏移; 以及发送单元，被配置为将由循环延迟偏移确定单元确定的循环延迟偏移应用于通过天线馈送组选择单元选择的一个或多个天线馈送组发送的信号，并发送结果信号。

公开(公告)号：US08560928B2

公开(公告)日：2013-10-15

申请号：US12988310

申请日：2008-09-10

申请人： Sooyoung Kim ,  Hee-Wook Kim ,  Do-Seob Ahn

发明人： Sooyoung Kim ,  Hee-Wook Kim ,  Do-Seob Ahn

IPC分类号： H03M13/03

CPC分类号： H04L1/0618 ,  H04B7/0669 ,  H04B7/0891 ,  H04L1/0068

摘要： A diversity method using an error correcting code. The diversity method includes creating a mother code by performing error correction coding on an input bit string to be coded, puncturing the created mother code and acquiring an error correcting code including systematic information and partial parity information, and space-time encoding the acquired error correcting code corresponding to each frequency.

摘要翻译： 一种使用纠错码的分集方法。 分集方法包括通过对要编码的输入比特串执行纠错编码来创建母码，对创建的母码进行穿孔并获取包括系统信息和部分奇偶校验信息的纠错码，以及对所获取的纠错码进行空时编码 代码对应于每个频率。

公开(公告)号：US08804857B2

公开(公告)日：2014-08-12

申请号：US13284147

申请日：2011-10-28

申请人： Hee-Wook Kim ,  Soo-Young Kim ,  Bon-Jun Ku ,  Do-Seob Ahn

发明人： Hee-Wook Kim ,  Soo-Young Kim ,  Bon-Jun Ku ,  Do-Seob Ahn

IPC分类号： H04L27/00

CPC分类号： H04L27/34 ,  H04B7/14 ,  H04B7/15528 ,  H04B7/18543

摘要： A signal processing technology for allowing a repeater to transmit a signal received from an external apparatus to a terminal is provided. In a satellite system, a signal transmitted from a satellite or transmitted to a satellite is subject to a low order modulation, and a terrestrial repeater performs a high order modulation on signals and retransmits the signals.

摘要翻译： 提供了一种用于允许中继器将从外部设备接收的信号发送到终端的信号处理技术。 在卫星系统中，从卫星发射或发送到卫星的信号经受​​低阶调制，并且地面中继器对信号执行高阶调制并重发信号。

公开(公告)号：US20100022238A1

公开(公告)日：2010-01-28

申请号：US12442072

申请日：2006-12-11

申请人： Hee-Wook Kim ,  Kun-Seok Kang ,  Do-Seob Ahn

发明人： Hee-Wook Kim ,  Kun-Seok Kang ,  Do-Seob Ahn

IPC分类号： H04W84/06

CPC分类号： H04B7/0669 ,  H04B7/15514 ,  H04B7/18582

摘要： Provided is a satellite communication system for obtaining a diversity gain by transmitting a signal applied with STBC. When a signal transmission band of a link between a satellite and a terminal differs from that of a link between a satellite and a repeater, the satellite communication system includes: a satellite for transmitting a first signal encoded to STBC using a band of a link formed between the satellite to a terminal and transmitting a second signal encoded to STBC using a band of a link formed between the satellite to a repeater; and at least one of frequency transforming repeaters for receiving the second signal through the band of the link formed between the satellite to the repeater, transforming the received second signal to a signal with other frequency band, and transmitting the transformed second signal using a band of a link formed to a terminal.

摘要翻译： 提供了一种用于通过发送施加有STBC的信号来获得分集增益的卫星通信系统。 当卫星和终端之间的链路的信号传输频带与卫星和中继器之间的链路的信号传输频带不同时，卫星通信系统包括：用于使用形成的链路的频带发送编码到STBC的第一信号的卫星 在所述卫星到终端之间，并且使用在所述卫星与中继器之间形成的链路的频带来发送编码到STBC的第二信号; 以及频率变换中继器中的至少一个，用于通过在卫星与中继器之间形成的链路的频带接收第二信号，将接收到的第二信号变换为具有其他频带的信号，以及使用 与终端形成的链接。

公开(公告)号：US08543106B2

公开(公告)日：2013-09-24

申请号：US12442072

申请日：2006-12-11

申请人： Hee-Wook Kim ,  Kun-Seok Kang ,  Do-Seob Ahn

发明人： Hee-Wook Kim ,  Kun-Seok Kang ,  Do-Seob Ahn

IPC分类号： H04W92/00

CPC分类号： H04B7/0669 ,  H04B7/15514 ,  H04B7/18582

摘要： Provided is a satellite communication system for obtaining a diversity gain by transmitting a signal applied with STBC. When a signal transmission band of a link between a satellite and a terminal differs from that of a link between a satellite and a repeater, the satellite communication system includes: a satellite for transmitting a first signal encoded to STBC using a band of a link formed between the satellite to a terminal and transmitting a second signal encoded to STBC using a band of a link formed between the satellite to a repeater; and at least one of frequency transforming repeaters for receiving the second signal through the band of the link formed between the satellite to the repeater, transforming the received second signal to a signal with other frequency band, and transmitting the transformed second signal using a band of a link formed to a terminal.

摘要翻译： 提供了一种用于通过发送施加有STBC的信号来获得分集增益的卫星通信系统。 当卫星和终端之间的链路的信号传输频带与卫星和中继器之间的链路的信号传输频带不同时，卫星通信系统包括：用于使用形成的链路的频带发送编码到STBC的第一信号的卫星 在所述卫星到终端之间，并且使用在所述卫星与中继器之间形成的链路的频带来发送编码到STBC的第二信号; 以及频率变换中继器中的至少一个，用于通过在卫星与中继器之间形成的链路的频带接收第二信号，将接收到的第二信号变换为具有其他频带的信号，以及使用 与终端形成的链接。

公开(公告)号：US08223858B2

公开(公告)日：2012-07-17

申请号：US12442319

申请日：2006-12-28

申请人： Hee-Wook Kim ,  Kun-Seok Kang ,  Do-Seob Ahn

发明人： Hee-Wook Kim ,  Kun-Seok Kang ,  Do-Seob Ahn

IPC分类号： H04L27/28

CPC分类号： H04L27/2657 ,  H04L27/2613 ,  H04L27/2662 ,  H04L27/2675

摘要： Provided are a time synchronization method and a frequency offset estimation method using the same in an OFDM system. The time synchronization method using a preamble transmitted from a transmitter to a receiver in the OFDM communication network includes the steps of: a) calculating a moving sum of a first sequence and a second sequence obtained by a product of neighboring elements in a received signal when the received signal containing a preamble is received from the transmitter; b) estimating a location of the received signal corresponding to the moving sum having a maximum value; and c) acquiring a time synchronization with respect to the received signal, based on the estimated location, wherein the first sequence is obtained from a product of neighboring elements in the preamble and a correlation value obtained by correlating another sequence with the first sequence is smaller than a predetermined value.

摘要翻译： 提供了一种在OFDM系统中的时间同步方法和使用该方法的频率偏移估计方法。 使用在OFDM通信网络中从发射机发送到接收机的前置码的时间同步方法包括以下步骤：a）计算接收信号中相邻元素乘积获得的第一序列和第二序列的移动和， 从发射机接收包含前置码的接收信号; b）估计与具有最大值的移动和对应的接收信号的位置; 以及c）基于估计的位置获取相对于接收信号的时间同步，其中从前导码中的相邻元素的乘积获得第一序列，以及通过将另一序列与第一序列相关而获得的相关值较小 超过预定值。

公开(公告)号：US20110041043A1

公开(公告)日：2011-02-17

申请号：US12988310

申请日：2008-09-10

申请人： Sooyoung Kim ,  Hee-Wook Kim ,  Do-Seob Ahn

发明人： Sooyoung Kim ,  Hee-Wook Kim ,  Do-Seob Ahn

IPC分类号： H03M13/03 ,  G06F11/10

CPC分类号： H04L1/0618 ,  H04B7/0669 ,  H04B7/0891 ,  H04L1/0068

摘要： Provided is a diversity method using an error correcting code. The diversity method includes: creating a mother code by start performing error correction coding on an input bit string to be coded; puncturing the created mother code and acquiring an error correcting code including systematic information and partial parity information; and space-time encoding the acquired error correcting code corresponding to each frequency.

摘要翻译： 提供了使用纠错码的分集方法。 分集方法包括：通过对要编码的输入比特串开始执行纠错编码来创建母码; 打破所创建的母版代码并获取包括系统信息和部分奇偶校验信息的纠错码; 并且对与每个频率相对应的获取的纠错码进行空时编码。

公开(公告)号：US20100027723A1

公开(公告)日：2010-02-04

申请号：US12442319

申请日：2006-12-28

申请人： Hee-Wook Kim ,  Kun-Seok Kang ,  Do-Seob Ahn

发明人： Hee-Wook Kim ,  Kun-Seok Kang ,  Do-Seob Ahn

IPC分类号： H04L27/06

CPC分类号： H04L27/2657 ,  H04L27/2613 ,  H04L27/2662 ,  H04L27/2675

摘要： Provided are a time synchronization method and a frequency offset estimation method using the same in an OFDM system. The time synchronization method using a preamble transmitted from a transmitter to a receiver in the OFDM communication network includes the steps of: a) calculating a moving sum of a first sequence and a second sequence obtained by a product of neighboring elements in a received signal when the received signal containing a preamble is received from the transmitter; b) estimating a location of the received signal corresponding to the moving sum having a maximum value; and c) acquiring a time synchronization with respect to the received signal, based on the estimated location, wherein the first sequence is obtained from a product of neighboring elements in the preamble and a correlation value obtained by correlating another sequence with the first sequence is smaller than a predetermined value.

摘要翻译： 提供了一种在OFDM系统中的时间同步方法和使用该方法的频率偏移估计方法。 使用在OFDM通信网络中从发射机发送到接收机的前置码的时间同步方法包括以下步骤：a）计算接收信号中相邻元素乘积获得的第一序列和第二序列的移动和， 从发射机接收包含前置码的接收信号; b）估计与具有最大值的移动和对应的接收信号的位置; 以及c）基于估计的位置获取相对于接收信号的时间同步，其中从前导码中的相邻元素的乘积获得第一序列，以及通过将另一序列与第一序列相关而获得的相关值较小 超过预定值。