公开(公告)号：US08718192B2

公开(公告)日：2014-05-06

申请号：US12166750

申请日：2008-07-02

申请人： Eun-Seok Ko ,  Yung-Soo Kim ,  Myeon-Kyun Cho ,  In-Soo Hwang ,  Vahid Tarokh

发明人： Eun-Seok Ko ,  Yung-Soo Kim ,  Myeon-Kyun Cho ,  In-Soo Hwang ,  Vahid Tarokh

IPC分类号： H03K9/00

CPC分类号： H04L25/0204 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/06 ,  H04L1/20

摘要： An apparatus and method for generating an effective Signal to Noise Ratio (SNR) per stream in a Multiple Input Multiple Output (MIMO) wireless communication system is disclosed. The apparatus includes a selector, a calculator, a generator, and a decider. The selector selects effective streams among whole streams. The calculator calculates a relative SNR rate between the effective streams. The generator generates an equation having as a solution an SNR of a first effective stream. The decider decides an SNR per effective stream using the solution of the equation and the relative SNR rate.

摘要翻译： 公开了一种用于在多输入多输出（MIMO）无线通信系统中产生每个流的有效信噪比（SNR）的装置和方法。 该装置包括选择器，计算器，发生器和决定器。 选择器在整个流中选择有效的流。 计算器计算有效流之间的相对SNR率。 发生器产生具有作为第一有效流的SNR的解的等式。 决策者使用公式的解和相对SNR率决定每个有效流的SNR。

公开(公告)号：US08189706B2

公开(公告)日：2012-05-29

申请号：US12186160

申请日：2008-08-05

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： H04L25/0204 ,  H04L1/0003 ,  H04L25/0224 ,  H04L25/0242 ,  H04L27/0008

摘要： In the present invention, an apparatus and a method for generating feedback information for a Maximum Likelihood (ML) detection scheme in a Multiple-Input Multiple-Output (MIMO) wireless communication system are provided. An apparatus of the invention includes a generator for generating constellation difference points by converting a constellation domain representing values of symbols into a constellation difference domain representing values of distance between symbols, a calculator for calculating per stream Symbol Error Rates (SERs) using the constellation difference points, and a determiner for determining per stream Effective Signal to Noise Ratios (ESNRs) using the per stream SER.

摘要翻译： 在本发明中，提供了一种用于在多输入多输出（MIMO）无线通信系统中产生用于最大似然（ML）检测方案的反馈信息的装置和方法。 本发明的装置包括一个发生器，用于通过将表示符号值的星座域转换为表示符号之间的距离值的星座差异域来产生星座差分点，用于计算每个流的符号误差率（SER），使用星座差 点和确定每个流的有效信噪比（ESNR）使用每流SER。

公开(公告)号：US20120002745A1

公开(公告)日：2012-01-05

申请号：US13255766

申请日：2010-03-09

申请人： Eun Seok Ko ,  Eun Yong Kim

发明人： Eun Seok Ko ,  Eun Yong Kim

IPC分类号： H04B15/00

CPC分类号： H04L5/0073 ,  H04B7/022 ,  H04B7/024 ,  H04B7/0408 ,  H04B7/0413 ,  H04L5/0032 ,  H04L5/0053

摘要： The present invention relates to a system and to a method for the cooperation among base stations, in which a communication service is provided to a plurality of communication terminals through the plurality of base stations. When channel state information of a communication terminal is acquired, a serving base station selects a serving channel code matching the channel state information from a codebook, calculates linear transform information using the serving channel code and the channel state information, and transmits the serving channel code to a cooperative base station. When the cooperative base station receives a cooperation channel code, the serving base station calculates serving weight information of the serving base station and cooperation weight information of the cooperative base station using the serving channel code and the cooperation channel code, and determines a beam forming vector by applying the linear transform information to the serving weight information. According to the present invention, the channel state information is linearly transformed before the base station transforms the channel state information into the channel code, to thereby predict a quantization loss between the channel state information and the channel code in the system for the cooperation among base stations. In addition, the base station may recover the quantization loss when communication service is provided in the system for the cooperation among base stations. This leads to improved cooperation performance among base stations in the system for the cooperation among base stations.

摘要翻译： 本发明涉及用于通过多个基站向多个通信终端提供通信服务的基站之间的协作的系统和方法。 当获取通信终端的信道状态信息时，服务基站从码本中选择与信道状态信息相匹配的服务信道码，使用服务信道码和信道状态信息计算线性变换信息，并发送服务信道码 到合作基站。 当协作基站接收到协作信道码时，服务基站使用服务信道码和协作信道码来计算服务基站的服务权重信息和合作基站的协作权重信息，并且确定波束形成向量 通过将线性变换信息应用于服务权重信息。 根据本发明，在基站将信道状态信息变换为信道码之前，对信道状态信息进行线性变换，从而预测信道状态信息与系统中的信道码之间的量化损失，用于基站 车站。 此外，当在用于基站之间的协作的系统中提供通信服务时，基站可以恢复量化损失。 这导致系统中基站之间的基站之间的合作的协作性能得到改善。

公开(公告)号：US20100220010A1

公开(公告)日：2010-09-02

申请号：US12660644

申请日：2010-03-02

申请人： Eun Seok Ko ,  Jong-Hyung Kwun ,  Sang Hyun Kim ,  Robert Heath, JR. ,  Chan-Byoung Chae

发明人： Eun Seok Ko ,  Jong-Hyung Kwun ,  Sang Hyun Kim ,  Robert Heath, JR. ,  Chan-Byoung Chae

IPC分类号： H01Q3/00

CPC分类号： H04B7/043 ,  H04B7/0452

摘要： A base station is capable of transmitting a signal in a wireless communication network. The base station decides channel state information matrices of respective channels by determining a state of the channels corresponding to respective transmission antennas. The base station calculates transmission beam forming vectors for the respective transmission antennas by a combination of a dot product and a cross product of the channel state information matrices. Thereafter, the base station beam-forms signals for the respective transmission antennas by using the respective transmission beam forming vectors, and transmitting the beam-formed signals.

摘要翻译： 基站能够在无线通信网络中发送信号。 基站通过确定与各个发送天线相对应的信道的状态来确定各信道的信道状态信息矩阵。 基站通过信道状态信息矩阵的点积和交叉乘积的组合来计算各个发送天线的发送波束形成向量。 此后，基站通过使用各个发送波束形成向量波束形成各个发送天线的信号，并发送波束形成的信号。

公开(公告)号：US07693041B2

公开(公告)日：2010-04-06

申请号：US11873251

申请日：2007-10-16

申请人： Pan-Yuh Joo ,  Dae-Eop Kang ,  Eun-Seok Ko ,  Dae-Sik Hong

发明人： Pan-Yuh Joo ,  Dae-Eop Kang ,  Eun-Seok Ko ,  Dae-Sik Hong

IPC分类号： H04J11/00 ,  H04J1/00 ,  H04L12/28 ,  H04L12/56 ,  H04K1/10 ,  H04L27/28

CPC分类号： H04L27/2607 ,  H04L1/0618

摘要： A mobile communication system for modulating input data with a specific size into an OFDM (Orthogonal Frequency Division Multiplexing) symbol and transmitting the OFDM symbol through at least two different antennas. A replica generator generates replica data by cyclically-circulating the input data. An encoder generates a first antenna signal and a second antenna signal by encoding the input data and the replica data. A first IFFT (Inverse Fast Fourier Transform) block generates a first OFDM symbol by performing IFFT on the first antenna signal, and a second IFFT block generates a second OFDM symbol by performing IFFT on the second antenna signal. A first antenna transmits the first OFDM symbol, and a second antenna transmits the second OFDM symbol.

摘要翻译： 一种用于将具有特定尺寸的输入数据调制成OFDM（正交频分复用）符号并通过至少两个不同天线发送OFDM符号的移动通信系统。 复制生成器通过循环输入数据来生成副本数据。 编码器通过对输入数据和副本数据进行编码来生成第一天线信号和第二天线信号。 第一IFFT（快速傅里叶逆变换）块通过对第一天线信号执行IFFT产生第一OFDM符号，第二IFFT块通过对第二天线信号执行IFFT来产生第二OFDM符号。 第一天线发送第一OFDM符号，第二天线发送第二OFDM符号。

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：US07483366B2

公开(公告)日：2009-01-27

申请号：US10292065

申请日：2002-11-12

申请人： Pan-Yuh Joo ,  Dae-Eop Kang ,  Eun-Seok Ko ,  Dae-Sik Hong

发明人： Pan-Yuh Joo ,  Dae-Eop Kang ,  Eun-Seok Ko ,  Dae-Sik Hong

IPC分类号： H04J11/00 ,  H04J1/00 ,  H04K1/10 ,  H04L27/28

CPC分类号： H04L1/08 ,  H04L1/0618 ,  H04L27/2602

摘要： A mobile communication system modulates input data with a specific size into an OFDM symbol and transmits the OFDM symbol through an antenna. In the mobile communication system, a replica generator generates OFDM symbol data by cyclic-circulating the input data by a predetermined cyclic circulation distance d, and outputs a stream of the input data and the replica data as a data stream.

摘要翻译： 移动通信系统将具有特定大小的输入数据调制成OFDM符号，并通过天线发送OFDM码元。 在移动通信系统中，复制发生器通过使输入数据循环循环预定的循环循环距离d来生成OFDM符号数据，并输出输入数据流和副本数据作为数据流。

公开(公告)号：US20060176993A1

公开(公告)日：2006-08-10

申请号：US11346698

申请日：2006-02-03

申请人： Jong-Hyung Kwun ,  Eung-Sun Kim ,  Jong-Hyeuk Lee ,  Dae-Sik Hong ,  Eun-Seok Ko

发明人： Jong-Hyung Kwun ,  Eung-Sun Kim ,  Jong-Hyeuk Lee ,  Dae-Sik Hong ,  Eun-Seok Ko

IPC分类号： H04L7/00

CPC分类号： H04L1/0618 ,  H04B7/0417 ,  H04B7/061 ,  H04B7/0626 ,  H04B7/0691

摘要： A signal transmission method for a multiple input multiple output (MIMO) communication system. A transmitter having a plurality of transmission antennas receives antenna selection information from a receiver having at least one reception antenna. The transmitter selects at least two transmission antennas based on the antenna selection information, beamforms space-time block coding (STBC)-coded input signals with a weighting matrix, and transmits the beamformed signals via the selected transmission antennas. The antenna selection information is generated based on exact channel characteristics and statistical channel characteristics for the transmission antennas and a spatial correlation between the transmission antennas.

摘要翻译： 一种用于多输入多输出（MIMO）通信系统的信号传输方法。 具有多个发送天线的发射机从具有至少一个接收天线的接收机接收天线选择信息。 发射机基于天线选择信息来选择至少两个发射天线，波束形成具有加权矩阵的时空块编码（STBC）编码的输入信号，并且经由所选择的发射天线发射波束形成的信号。 天线选择信息是基于发射天线的精确信道特性和统计信道特性以及发射天线之间的空间相关来产生的。

公开(公告)号：US09030952B2

公开(公告)日：2015-05-12

申请号：US13362971

申请日：2012-01-31

申请人： Eun-Seok Ko ,  Chung-Yong Lee ,  Myoung-Seok Kim ,  Mi-Sun Yoon ,  Yung-Soo Kim ,  June Moon

发明人： Eun-Seok Ko ,  Chung-Yong Lee ,  Myoung-Seok Kim ,  Mi-Sun Yoon ,  Yung-Soo Kim ,  June Moon

IPC分类号： H04L12/26 ,  H04W72/04 ,  H04B7/04 ,  H04W72/08

CPC分类号： H04W72/0433 ,  H04B7/0413 ,  H04W72/082

摘要： An apparatus and method are provided for precoding by limited cooperation in a wireless communication system. A method of data precoding by a Base Station (BS) in a wireless communication system includes determining a Channel Quality Indicator (CQI) parameter indicating channel size information between the BS and a User Equipment (UE) served by the BS; transmitting the determined CQI parameter through a backhaul to a central unit; receiving, from the central unit, a weight factor based on a CQI parameter from each cell; and determining a precoding vector based on the weight factor. The weight factor represents a relative ratio of an inter-cell environment that is to be interfered by the BS.

摘要翻译： 提供了一种用于通过无线通信系统中的有限协作进行预编码的装置和方法。 在无线通信系统中由基站（BS）进行数据预编码的方法包括确定指示BS与由BS服务的用户设备（UE）之间的信道大小信息的信道质量指示符（CQI）参数; 通过回程将确定的CQI参数发送到中央单元; 从所述中央单元接收来自每个小区的基于CQI参数的权重因子; 以及基于所述权重因子确定预编码向量。 权重因子表示要被BS干扰的小区间环境的相对比例。

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。