公开(公告)号：US20090097586A1

公开(公告)日：2009-04-16

申请号：US12287104

申请日：2008-10-06

申请人： Eun-Seok Ko ,  Yung-Soo Kim ,  Myeon-Kyun Cho ,  Eun-Yong Kim

发明人： Eun-Seok Ko ,  Yung-Soo Kim ,  Myeon-Kyun Cho ,  Eun-Yong Kim

IPC分类号： H04B7/02

CPC分类号： H04B7/0417 ,  H04B7/063 ,  H04B7/0639 ,  H04L25/0204 ,  H04L25/0224 ,  H04L25/0242

摘要： A Multiple-Input Multiple-Output (MIMO) wireless communication system is provided. A receiving end includes a selector for selecting at least one stream for a MultiUser (MU) mode; a first generator for generating per stream channel quality information for the at least one selected stream as at least one candidate for channel information for the MU mode; and a determiner for determining one per stream channel quality information of the candidates as channel information for the MU mode.

摘要翻译： 提供了多输入多输出（MIMO）无线通信系统。 接收端包括用于为多用户（MU）模式选择至少一个流的选择器; 第一发生器，用于生成用于所述至少一个所选流的每流信道质量信息，作为所述MU模式的信道信息的至少一个候选; 以及确定器，用于确定候选的一个每个流信道质量信息作为MU模式的信道信息。

公开(公告)号：US08369444B2

公开(公告)日：2013-02-05

申请号：US12322587

申请日：2009-02-04

申请人： Eun-Yong Kim ,  Eun-Seok Ko ,  Yung-Soo Kim ,  Myeon-Kyun Cho

发明人： Eun-Yong Kim ,  Eun-Seok Ko ,  Yung-Soo Kim ,  Myeon-Kyun Cho

IPC分类号： H04L27/00

CPC分类号： H04B7/0617 ,  H04B7/0626 ,  H04B7/086

摘要： An apparatus and method for beamforming in a multi-antenna system are provided. The method includes assuming at least one codeword comprised in a codebook as a precoding weight of a reference receive end and generating post-processing weights of at least two receive ends, confirming a codeword maximizing a sum rate using the post-processing weights, generating preceding weights of the receive ends using the codeword maximizing the sum rate, and precoding a transmit signal using the generated precoding weights and transmitting the precoded transmit signal to each receive end.

公开(公告)号：US08364091B2

公开(公告)日：2013-01-29

申请号：US12098099

申请日：2008-04-04

申请人： Eun-Seok Ko ,  Yung-Soo Kim ,  Myeon-Kyun Cho ,  Dae-Sik Hong

发明人： Eun-Seok Ko ,  Yung-Soo Kim ,  Myeon-Kyun Cho ,  Dae-Sik Hong

IPC分类号： H04B1/00

CPC分类号： H04B7/0691 ,  H04B7/0617 ,  H04L5/0023

摘要： A method and apparatus for selecting an antenna in a communication system is provided. The apparatus includes a mobile station for determining a set of transmit antennas by considering statistical channel information, for determining a subset of the transmit antennas, which can increase a diversity gain and reduce an effect of a spatial correlation, from among the determined set of the transmit antennas by considering the statistical channel information and instantaneous channel information, for generating antenna selection information by using the determined subset of the transmit antennas, and for feeding back the generated antenna selection information to a base station.

摘要翻译： 提供一种在通信系统中选择天线的方法和装置。 该装置包括：移动站，用于通过考虑统计信道信息来确定一组发射天线，用于确定发射天线的子集，其可以增加分集增益并降低空间相关性的影响，所确定的一组 通过考虑统计信道信息和瞬时信道信息来发射天线，用于通过使用所确定的发射天线的子集来产生天线选择信息，并且将生成的天线选择信息反馈给基站。

公开(公告)号：US08184752B2

公开(公告)日：2012-05-22

申请号：US12287104

申请日：2008-10-06

申请人： Eun-Seok Ko ,  Yung-Soo Kim ,  Myeon-Kyun Cho ,  Eun-Yong Kim

发明人： Eun-Seok Ko ,  Yung-Soo Kim ,  Myeon-Kyun Cho ,  Eun-Yong Kim

IPC分类号： H03D1/04 ,  H03D1/06 ,  H03K5/01 ,  H03K6/04 ,  H04B1/10 ,  H04L1/00 ,  H04L25/08

CPC分类号： H04B7/0417 ,  H04B7/063 ,  H04B7/0639 ,  H04L25/0204 ,  H04L25/0224 ,  H04L25/0242

摘要： A Multiple-Input Multiple-Output (MIMO) wireless communication system is provided. A receiving end includes a selector for selecting at least one stream for a MultiUser (MU) mode; a first generator for generating per stream channel quality information for the at least one selected stream as at least one candidate for channel information for the MU mode; and a determiner for determining one per stream channel quality information of the candidates as channel information for the MU mode.

摘要翻译： 提供了多输入多输出（MIMO）无线通信系统。 接收端包括用于为多用户（MU）模式选择至少一个流的选择器; 第一发生器，用于生成用于所述至少一个所选流的每流信道质量信息，作为所述MU模式的信道信息的至少一个候选; 以及确定器，用于确定候选的一个每个流信道质量信息作为MU模式的信道信息。

公开(公告)号：US20090195455A1

公开(公告)日：2009-08-06

申请号：US12322587

申请日：2009-02-04

申请人： Eun-Yong Kim ,  Eun-Seok Ko ,  Yung-Soo Kim ,  Myeon-Kyun Cho

发明人： Eun-Yong Kim ,  Eun-Seok Ko ,  Yung-Soo Kim ,  Myeon-Kyun Cho

IPC分类号： H01Q3/00

CPC分类号： H04B7/0617 ,  H04B7/0626 ,  H04B7/086

摘要： An apparatus and method for beamforming in a multi-antenna system are provided. The method includes assuming at least one codeword comprised in a codebook as a precoding weight of a reference receive end and generating post-processing weights of at least two receive ends, confirming a codeword maximizing a sum rate using the post-processing weights, generating preceding weights of the receive ends using the codeword maximizing the sum rate, and precoding a transmit signal using the generated precoding weights and transmitting the precoded transmit signal to each receive end.

摘要翻译： 提供了一种用于多天线系统中的波束成形的装置和方法。 该方法包括将码本中包含的至少一个码字作为参考接收端的预编码权重，并且生成至少两个接收端的后处理权重，使用后处理权重确认码字最大化和速率，生成前 接收端的权重使用最大化和速率的码字，并且使用所生成的预编码权重对发送信号进行预编码，并将预编码的发送信号发送到每个接收端。

公开(公告)号：US08396143B2

公开(公告)日：2013-03-12

申请号：US12283553

申请日：2008-09-12

申请人： Eun-Yong Kim ,  Eun-Seok Ko ,  Yung-Soo Kim ,  Myeon-Kyun Cho

发明人： Eun-Yong Kim ,  Eun-Seok Ko ,  Yung-Soo Kim ,  Myeon-Kyun Cho

IPC分类号： H04L27/28

CPC分类号： H04B7/0617 ,  H04B7/0619 ,  H04L5/0007 ,  H04L5/0051 ,  H04L25/0224

摘要： An apparatus and method for pilot transmission in a wireless communication system are provided. The method includes generating a precode and a postcode for coordinated beamforming using channel information of one or more streams for transmitting signals to one or more receive ends, selecting one or more streams to be allocated pilots, updating the precode according to a reference point for representing an effective channel of non-selected streams orthogonal to an effective channel of the selected streams, and precoding signals transmitted through the streams.

公开(公告)号：US20090067525A1

公开(公告)日：2009-03-12

申请号：US12283553

申请日：2008-09-12

申请人： Eun-Yong Kim ,  Eun-Seok Ko ,  Yung-Soo Kim ,  Myeon-Kyun Cho

发明人： Eun-Yong Kim ,  Eun-Seok Ko ,  Yung-Soo Kim ,  Myeon-Kyun Cho

IPC分类号： H04L27/28

CPC分类号： H04B7/0617 ,  H04B7/0619 ,  H04L5/0007 ,  H04L5/0051 ,  H04L25/0224

摘要： An apparatus and method for pilot transmission in a wireless communication system are provided. The method includes generating a precode and a postcode for coordinated beamforming using channel information of one or more streams for transmitting signals to one or more receive ends, selecting one or more streams to be allocated pilots, updating the precode according to a reference point for representing an effective channel of non-selected streams orthogonal to an effective channel of the selected streams, and precoding signals transmitted through the streams.

摘要翻译： 提供了一种用于无线通信系统中的导频传输的装置和方法。 该方法包括使用用于将信号发送到一个或多个接收端的一个或多个流的信道信息来生成用于协调波束成形的预编码和后码，选择要分配的导频的一个或多个流，根据用于表示的参考点更新预编码 与所选流的有效信道正交的未选择流的有效信道，以及通过流发送的预编码信号。

公开(公告)号：US20100248729A1

公开(公告)日：2010-09-30

申请号：US12661916

申请日：2010-03-26

申请人： Tak-Ki Yu ,  Eun-Seok Ko ,  Yu-Seok Kim ,  Joo-Hwan Chun ,  Hyun-Jong Yang

发明人： Tak-Ki Yu ,  Eun-Seok Ko ,  Yu-Seok Kim ,  Joo-Hwan Chun ,  Hyun-Jong Yang

IPC分类号： H04W72/04

CPC分类号： H04B7/0854 ,  H04B7/026

摘要： An apparatus for use in a relay wireless communication system is capable of bidirectional relaying with precoding. A Base Station (BS) includes a plurality of antennas. The BS can receive a relay signal that includes a transmit symbol vector of the BS and a transmit symbol vector of a Mobile Station (MS) from a Relay Station. The BS determines power difference values corresponding to all of symbol vectors available as the transmit symbol vector of the MS. The BS further determines the transmit symbol vector of the MS or per bit Log Likelihood Ratios using the power difference values.

摘要翻译： 用于中继无线通信系统的装置能够通过预编码进行双向中继。 基站（BS）包括多个天线。 BS可以从中继站接收包括BS的发射符号向量和移动站（MS）的发射符号向量的中继信号。 BS确定对应于可用作MS的发射符号向量的所有符号向量的功率差值。 BS还使用功率差值来确定MS的发射符号向量或每比特对数似然比。

公开(公告)号：US08417256B2

公开(公告)日：2013-04-09

申请号：US12783853

申请日：2010-05-20

申请人： Eun-Seok Ko ,  Tak-Ki Yu ,  Eun-Yong Kim

发明人： Eun-Seok Ko ,  Tak-Ki Yu ,  Eun-Yong Kim

IPC分类号： H04W72/00

CPC分类号： H04B7/022

摘要： An apparatus and a method for beamforming in a wireless communication using a Base Station (BS) cooperative scheme are provided. The beamforming method includes exchanging channel status information with at least one cooperative BS which provides a BS cooperative service, generating a beamforming weight based on the channel status information, determining channel variation caused by a time delay in the channel status information exchange with the cooperative BS, updating the generated beamforming weight based on the channel variation, and precoding a transmit signal based on the updated beamforming weight.

摘要翻译： 提供了一种使用基站（BS）协作方案在无线通信中进行波束成形的装置和方法。 波束形成方法包括：与提供BS协作服务的至少一个协作BS交换信道状态信息，基于信道状态信息生成波束成形加权，确定由与协作BS的信道状态信息交换中的时间延迟引起的信道变化 基于信道变化来更新所生成的波束成形权重，并且基于更新的波束形成权重对发送信号进行预编码。

公开(公告)号：US08315556B2

公开(公告)日：2012-11-20

申请号：US12661916

申请日：2010-03-26

申请人： Tak-Ki Yu ,  Eun-Seok Ko ,  Yu-Seok Kim ,  Joo-Hwan Chun ,  Hyun-Jong Yang

发明人： Tak-Ki Yu ,  Eun-Seok Ko ,  Yu-Seok Kim ,  Joo-Hwan Chun ,  Hyun-Jong Yang

IPC分类号： H04B7/185

CPC分类号： H04B7/0854 ,  H04B7/026

摘要： An apparatus for use in a relay wireless communication system is capable of bidirectional relaying with precoding. A Base Station (BS) includes a plurality of antennas. The BS can receive a relay signal that includes a transmit symbol vector of the BS and a transmit symbol vector of a Mobile Station (MS) from a Relay Station. The BS determines power difference values corresponding to all of symbol vectors available as the transmit symbol vector of the MS. The BS further determines the transmit symbol vector of the MS or per bit Log Likelihood Ratios using the power difference values.

摘要翻译： 用于中继无线通信系统的装置能够通过预编码进行双向中继。 基站（BS）包括多个天线。 BS可以从中继站接收包括BS的发射符号向量和移动站（MS）的发射符号向量的中继信号。 BS确定对应于可用作MS的发射符号向量的所有符号向量的功率差值。 BS还使用功率差值来确定MS的发射符号向量或每比特对数似然比。