公开(公告)号：US20090196362A1

公开(公告)日：2009-08-06

申请号：US12304291

申请日：2006-09-28

申请人： Myung-Sun Song ,  Sung-Hyun Hwang ,  Gwang-Zeen Ko ,  Kyung-Hi Chang ,  Sung-Ho Park ,  Sang-Jun Ko ,  Joo Heo ,  Jung-Ju Kim

发明人： Myung-Sun Song ,  Sung-Hyun Hwang ,  Gwang-Zeen Ko ,  Kyung-Hi Chang ,  Sung-Ho Park ,  Sang-Jun Ko ,  Joo Heo ,  Jung-Ju Kim

IPC分类号： H04L27/28

CPC分类号： H04L5/0058 ,  H04B7/0408 ,  H04L1/0003 ,  H04L1/0009 ,  H04L5/0023 ,  H04L5/0032 ,  H04L5/0037 ,  H04L5/0046

摘要： Provided are a transmission method and apparatus for allocating a subchannel and forming a stationary beam to maximize transmission efficiency in an OFDMA based wireless communication system. The method includes determining the subchannel for the equipment of each user based on the channel state of the equipment of each user, determining a beam index for the equipment of each user, based on location information and direction of arrival information of the equipment of each user, generating an OFDM symbol by mapping a modulation symbol corresponding to the equipment of each user to the determined subchannel, and transmitting the generated OFDM symbol to a wireless space by forming a beam following the determined beam index. Using the method, the equipment of each user can be allocated with an advantageous subchannel, can remove an interference signal at low cost, and can increase total throughput of an OFDMA system downlink.

摘要翻译： 提供了一种用于分配子信道并形成固定波束以在基于OFDMA的无线通信系统中最大化传输效率的传输方法和装置。 该方法包括基于每个用户的设备的信道状态来确定每个用户的设备的子信道，基于每个用户的设备的位置信息和到达方向信息确定每个用户的设备的波束索引 通过将与每个用户的设备相对应的调制符号映射到所确定的子信道来生成OFDM符号，并且通过形成遵循所确定的波束索引的波束来将生成的OFDM符号发送到无线空间。 使用该方法，可以为每个用户的设备分配有利的子信道，可以以低成本去除干扰信号，并且可以增加OFDMA系统下行链路的总吞吐量。

公开(公告)号：US20100040159A1

公开(公告)日：2010-02-18

申请号：US12521370

申请日：2007-12-21

申请人： Dong-Kwan Lee ,  Jung-Ju Kim

发明人： Dong-Kwan Lee ,  Jung-Ju Kim

IPC分类号： H04L27/28

CPC分类号： H04L5/0048 ,  H04J11/00 ,  H04J13/004 ,  H04L5/0007 ,  H04L25/0228 ,  H04L27/18 ,  H04L27/2613 ,  H04W88/08

摘要： The present invention relates to a pilot tone generating method and apparatus of an orthogonal frequency division multiple access system and method, and a channel estimation method and apparatus using the same. The channel estimation apparatus includes a pilot tone extracting unit for extracting a pilot tone, which is inserted within a frame with data tone, masked with an orthogonal code; a pilot tone unmasking unit for unmasking of the pilot tone extracted from the pilot tone extracting unit by using an orthogonal code information; and a channel estimation operating unit for estimating a channel by calculating an average of the pilot tones which is unmasked in the unmasking unit.

摘要翻译： 本发明涉及一种正交频分多址系统和方法的导频音产生方法和装置，以及使用该方法的信道估计方法和装置。 信道估计装置包括导频音提取单元，用于提取插入具有用正交码掩蔽的数据音调的帧内的导频音; 导频音解掩模单元，用于通过使用正交码信息来解除从导频音提取单元提取的导频音; 以及信道估计操作单元，用于通过计算在所述揭幕单元中未屏蔽的导频音的平均值来估计信道。

公开(公告)号：US08588274B2

公开(公告)日：2013-11-19

申请号：US12521370

申请日：2007-12-21

申请人： Dong-Kwan Lee ,  Jung-Ju Kim

发明人： Dong-Kwan Lee ,  Jung-Ju Kim

IPC分类号： H04B1/00

CPC分类号： H04L5/0048 ,  H04J11/00 ,  H04J13/004 ,  H04L5/0007 ,  H04L25/0228 ,  H04L27/18 ,  H04L27/2613 ,  H04W88/08

摘要： The present invention relates to a pilot tone generating method and apparatus of an orthogonal frequency division multiple access system and method, and a channel estimation method and apparatus using the same. The channel estimation apparatus includes a pilot tone extracting unit for extracting a pilot tone, which is inserted within a frame with data tone, masked with an orthogonal code; a pilot tone unmasking unit for unmasking of the pilot tone extracted from the pilot tone extracting unit by using an orthogonal code information; and a channel estimation operating unit for estimating a channel by calculating an average of the pilot tones which is unmasked in the unmasking unit.

摘要翻译： 本发明涉及一种正交频分多址系统和方法的导频音产生方法和装置，以及使用该方法的信道估计方法和装置。 信道估计装置包括导频音提取单元，用于提取插入具有用正交码掩蔽的数据音调的帧内的导频音; 导频音解掩模单元，用于通过使用正交码信息来解除从导频音提取单元提取的导频音; 以及信道估计操作单元，用于通过计算在所述揭幕单元中未屏蔽的导频音的平均值来估计信道。