公开(公告)号：US08155231B2

公开(公告)日：2012-04-10

申请号：US11850301

申请日：2007-09-05

Applicant: Kyung-Hun Jang ,  In-Kyu Lee ,  Dong-Jun Lee ,  Heun-Chul Lee ,  Jung-Hoon Suh ,  Young-Soo Kim ,  Hyo-Sun Hwang

Inventor： Kyung-Hun Jang ,  In-Kyu Lee ,  Dong-Jun Lee ,  Heun-Chul Lee ,  Jung-Hoon Suh ,  Young-Soo Kim ,  Hyo-Sun Hwang

IPC: H04B7/02

CPC classification number: H04B7/0691 ,  H04B7/061 ,  H04B7/0697 ,  H04L1/0054

Abstract: A method for selecting an antenna in an orthogonalized spatial multiplexing system. Upon receipt of at least one symbol from a transmitter via multiple receive antennas, a receiver decodes each of the received symbols; determines a rotation angle between the received symbols, and selects an optimal subset of transmit antennas using a distance between vectors of the decoded symbols; generates feedback information including the determined rotation angle and the selected optimal subset, and transmits the generated feedback information to the transmitter. Upon receipt of the feedback information, the transmitter beam-forms an antenna corresponding to the optimal subset depending on the received feedback information, and transmits a data symbol to the receiver. The receiver detects each of data symbols received from the transmitter.

Abstract translation: 一种在正交空间复用系统中选择天线的方法。 在经由多个接收天线从发射机接收到至少一个符号后，接收机对每个所接收的符号进行解码; 确定接收到的符号之间的旋转角度，并使用解码符号的向量之间的距离来选择发射天线的最佳子集; 产生包括所确定的旋转角度和所选择的最佳子集的反馈信息，并将生成的反馈信息发送到发射机。 在接收到反馈信息时，发射机波束根据接收的反馈信息形成对应于最佳子集的天线，并将数据符号发送到接收机。 接收机检测从发射机接收的每个数据符号。

公开(公告)号：US20070189416A1

公开(公告)日：2007-08-16

申请号：US11655780

申请日：2007-01-19

Applicant: Young-Soo Kim ,  Dong-Jun Lee ,  Jung-Hoon SUH ,  Kyung-Hun Jang ,  Hyo-Sun Hwang ,  In-Kyu Lee ,  Heun-Chul Lee

Inventor： Young-Soo Kim ,  Dong-Jun Lee ,  Jung-Hoon SUH ,  Kyung-Hun Jang ,  Hyo-Sun Hwang ,  In-Kyu Lee ,  Heun-Chul Lee

IPC: H04L27/00 ,  H04L1/02

CPC classification number: H04L27/2608 ,  H04B7/0417 ,  H04B7/0626 ,  H04L1/0041 ,  H04L1/0056 ,  H04L25/03343 ,  H04L2025/03414

Abstract: An Orthogonal Spatial Multiplexing (OSM) apparatus and method in a closed-loop Multiple Input Multiple Output-Orthogonal Frequency Division Multiplexing (MIMO-OFDM) system are provided. In the OSM method, a basic signal model is set and transmission symbols are encoded. A real-valued system model corresponding to the basic signal model is obtained. To achieve orthogonality, rotations angles are calculated and are applied to the encoded transmission symbols.

Abstract translation: 提供了一种闭环多输入多输出正交频分复用（MIMO-OFDM）系统中的正交空间复用（OSM）装置和方法。 在OSM方法中，设置基本信号模型并对发送符号进行编码。 获得对应于基本信号模型的实值系统模型。 为了实现正交性，计算旋转角度并将其应用于编码的传输符号。

公开(公告)号：US10027392B2

公开(公告)日：2018-07-17

申请号：US15005657

申请日：2016-01-25

Applicant: Heun-Chul Lee ,  Sung-Soo Kim ,  Jong-Han Lim ,  Sung-Yoon Cho

Inventor： Heun-Chul Lee ,  Sung-Soo Kim ,  Jong-Han Lim ,  Sung-Yoon Cho

IPC: H04B7/0456 ,  H04J11/00

Abstract: Methods and apparatuses are provided for determining an interference transmission mode (TM) at a communication device in a cellular communication system using a resource element (RE) defined by frequency and time. A first signal is received in one RE. The first signal comprises a serving signal and an interference signal. A first vector of the received first signal is projected onto each of N projection vectors. A traffic-to-pilot ratio (TPR) decision metric of the interference signal is determined by using N pairs of an actual squared value and an expected squared value which are corresponding to the projected first vector. A TM of the interference signal is detected by determining a TF of the interference signal which minimizes the TPR decision metric from among predetermined transmit format (TF) candidates.

公开(公告)号：US07564915B2

公开(公告)日：2009-07-21

申请号：US11153201

申请日：2005-06-15

Applicant: In-Kyu Lee ,  Heun-Chul Lee

Inventor： In-Kyu Lee ,  Heun-Chul Lee

IPC: H04B1/00

CPC classification number: H04L1/0668

Abstract: An apparatus for coding a pseudo orthogonal space-time block code in a transmitter using 4 transmission antennas of first to fourth transmission antennas. Upon receiving information symbol streams x1x2x3x4 to be transmitted, a serial-to-parallel converter parallel-converts the received information symbol streams x1x2x3x4 into x1,x2,x3,x4. A pseudo orthogonal space-time block coding (PO-STBC) encoder codes the parallel-converted information symbol streams x1,x2,x3,x4 using a pseudo orthogonal space-time block coding scheme such that the information symbol streams x1,x2,x3,x4 are transmitted via corresponding transmission antennas for first to fourth time periods.

Abstract translation: 一种用于使用第一至第四发送天线的4个发送天线对发送机中的伪正交空时块码进行编码的装置。 在接收要发送的信息符号流x1x2x3x4时，串并转换器将接收到的信息符号流x1x2x3x4并行转换为x1，x2，x3，x4。 伪正交空时块编码（PO-STBC）编码器使用伪正交空时块编码方案对并行转换的信息符号流x1，x2，x3，x4进行编码，使得信息符号流x1，x2，x3 ，x4经由相应的发送天线发送第一至第四时间段。