公开(公告)号：US20090135939A1

公开(公告)日：2009-05-28

申请号：US11856569

申请日：2007-09-17

申请人： In-Soo Hwang ,  Cheol-Woo You ,  Yung-Soo Kim ,  Young-Ho Jung

发明人： In-Soo Hwang ,  Cheol-Woo You ,  Yung-Soo Kim ,  Young-Ho Jung

IPC分类号： H04B7/02

CPC分类号： H04B7/0669 ,  H04L1/0006 ,  H04L1/0618 ,  H04L1/0656 ,  H04L1/0662

摘要： Disclosed is a space-time coding apparatus and method to flexibly adjust diversity/multiplexing orders in a multiple-antenna system. The transmitting apparatus for the multiple-antenna system includes a space-time code controller, an encoder, a demultiplexer, and a space-time encoder. The space-time code controller generates space-time codes by determining bases according to a multiplexing order required by a receiver. The encoder modulates and encodes data destined for the receiver in accordance with a predetermined modulation level. The demultiplexer demultiplexes data received from the encoder in order to transmit the data through at least one antenna. The space-time encoder space-time-codes the demultiplexed data using the space-time codes.

摘要翻译： 公开了一种在多天线系统中灵活地调整分集/复用顺序的时空编码装置和方法。 用于多天线系统的发送装置包括时空码控制器，编码器，解复用器和时空编码器。 空时编码控制器通过根据接收机所要求的多路复用顺序确定基准来产生时空码。 编码器根据预定的调制电平对目的地为接收机的数据进行调制和编码。 解复用器对从编码器接收的数据进行解复用，以通过至少一个天线发送数据。 时空编码器使用空时码对多路复用数据进行空时编码。

公开(公告)号：US07535970B2

公开(公告)日：2009-05-19

申请号：US10924463

申请日：2004-08-23

申请人： Chang-Soon Park ,  Kwang-Bok Lee ,  Yung-Soo Kim ,  Jong-Hyeuk Lee ,  Sung-Jin Kim

发明人： Chang-Soon Park ,  Kwang-Bok Lee ,  Yung-Soo Kim ,  Jong-Hyeuk Lee ,  Sung-Jin Kim

IPC分类号： H04L27/00

CPC分类号： H04B7/061 ,  H04B7/0669 ,  H04W52/42

摘要： Disclosed is a wireless communication apparatus and method for a multiple transmit and receive antenna system using multiple codes. In suggested detection algorithm, a successive interference cancellation (SIC) scheme is employed in both an antenna domain and a code domain by successively canceling multi-code interference (MCI). An effective transmit power allocation method suitable for the detection algorithm is suggested. Transmit power allocated to each code is calculated. The transmit power is determined as a simple ratio of power of a certain signal to power of a next code signal. Based on the calculated code transmit power, transmit power for each transmit antenna is allocated. Thus, information about transmit power calculated at a receive end is feedback to a transmit end through a feedback channel.

摘要翻译： 公开了一种使用多个码的多发射和接收天线系统的无线通信装置和方法。 在建议的检测算法中，通过连续取消多码干扰（MCI），在天线域和码域中采用连续干扰消除（SIC）方案。 建议适用于检测算法的有效发射功率分配方法。 计算分配给每个代码的发射功率。 发送功率被确定为特定信号的功率与下一个码信号的功率的简单比率。 基于计算出的码发射功率，分配每个发射天线的发射功率。 因此，在接收端计算的关于发射功率的信息通过反馈信道反馈到发射端。

公开(公告)号：US07505527B2

公开(公告)日：2009-03-17

申请号：US10681937

申请日：2003-10-09

申请人： Chan-Soo Hwang ,  Vahid Tarokh ,  Seung-Hoon Nam ,  Jae-Hak Chung ,  Yung-Soo Kim

发明人： Chan-Soo Hwang ,  Vahid Tarokh ,  Seung-Hoon Nam ,  Jae-Hak Chung ,  Yung-Soo Kim

IPC分类号： H04B7/02

CPC分类号： H04L1/0618 ,  H04B7/0669 ,  H04B7/0697 ,  H04B7/0891 ,  H04L1/0643

摘要： A transmitter and a receiver are disclosed herein that support transmit antenna diversity using space-time block coding in a wireless communication system. The transmitter produces symbol combinations containing, as their elements, input symbols, the inversions and conjugates of the symbols, and symbols obtained by rotating the phases of the symbols once, forms a matrix having symbols in at least two columns orthogonal to each other with the symbol combinations, and transmits the matrix. The receiver detects symbols that minimize maximum likelihood (ML) decoding metrics over all possible symbols using channel gains from transmit antennas to a receive antenna. Also, the receiver selects candidate symbols among all possible symbols according to the characteristics of transmitted modulation symbols and detects symbols that minimize the ML decoding metrics.

摘要翻译： 本文公开的发射器和接收器在无线通信系统中支持使用空时块编码的发射天线分集。 发射机产生符号组合，其包含输入符号，符号的反转和共轭以及通过旋转符号的相位获得的符号一次作为其元素，形成具有彼此正交的至少两列中的符号的矩阵， 符号组合，并传输矩阵。 接收机通过使用从发射天线到接收天线的信道增益，检测所有可能符号上的最大似然（ML）解码度量的符号。 此外，接收机根据发送的调制符号的特性来选择所有可能符号中的候选符号，并且检测使ML解码度量最小化的符号。

公开(公告)号：US20090036133A1

公开(公告)日：2009-02-05

申请号：US12220853

申请日：2008-07-29

申请人： Yung-Soo Kim ,  Jong-Hyung Kwun ,  Dai-Kwan Kim

发明人： Yung-Soo Kim ,  Jong-Hyung Kwun ,  Dai-Kwan Kim

IPC分类号： H04Q7/20

CPC分类号： H04W36/0077 ,  H04W36/08 ,  H04W36/14 ,  H04W92/20

摘要： Provided is an apparatus and method for transmitting/receiving a message for a handover to a heterogeneous system in a BWA system. In the method, a neighboring BS information message containing the neighboring heterogeneous system BS information is generated according to the neighboring BS information message generation scheme of the serving system. The serving system BS has only to transmit information about a neighboring BS of the serving system, thus reducing a message overhead. Also, the neighboring heterogeneous system BS has only to transmit its own BS information within the corresponding coverage, thus enabling efficient use of control channel resources.

摘要翻译： 提供了一种用于在BWA系统中向异构系统发送/接收用于切换的消息的装置和方法。 在该方法中，根据服务系统的相邻BS信息消息生成方案生成包含相邻异构系统BS信息的相邻BS信息消息。 服务系统BS仅仅发送关于服务系统的相邻BS的信息，从而减少消息开销。 另外，相邻的异构系统BS仅仅在对应的覆盖范围内发送自己的BS信息，从而能够有效地利用控制信道资源。

公开(公告)号：US20080130570A1

公开(公告)日：2008-06-05

申请号：US11946456

申请日：2007-11-28

申请人： Young-Ho Jung ,  Cheol-Woo You ,  Yung-Soo Kim ,  Sung-Hyun Cho ,  Jong-Hyung Kwun

发明人： Young-Ho Jung ,  Cheol-Woo You ,  Yung-Soo Kim ,  Sung-Hyun Cho ,  Jong-Hyung Kwun

IPC分类号： H04Q7/00

CPC分类号： H04W28/18 ,  H04W48/08 ,  H04W72/08 ,  H04W88/10

摘要： A method for providing a service in a communication system is provided. A Base Station (BS) supporting a plurality of communication service modes allocates communication resources for each of the plurality of communication service modes according to a ratio determined in accordance with a communication service mode preferred by a terminal. The BS transmits a combination of resources allocated for each of the plurality of communication service modes to the terminal. The communication service mode preferred by the terminal is determined using at least one of channel condition of the terminal, moving velocity, preferred communication mode, required performance, billing system, and user preference.

摘要翻译： 提供了一种用于在通信系统中提供服务的方法。 支持多个通信服务模式的基站（BS）根据根据终端优选的通信服务模式确定的比例为多个通信服务模式中的每一个分配通信资源。 BS向终端发送为多个通信服务模式中的每一个分配的资源的组合。 终端优选的通信服务模式使用终端的信道条件，移动速度，优选通信模式，所需性能，计费系统和用户偏好中的至少一个来确定。

公开(公告)号：US20080064329A1

公开(公告)日：2008-03-13

申请号：US11851922

申请日：2007-09-07

申请人： Young-Ho JUNG ,  Yung-Soo Kim ,  Cheol-Woo You

发明人： Young-Ho JUNG ,  Yung-Soo Kim ,  Cheol-Woo You

IPC分类号： H04B7/14

CPC分类号： H04B7/2606 ,  H04B7/155

摘要： A method for performing ranging by a mobile station in a communication system. The method includes transmitting a ranging sequence to a relay station; receiving an added signal of a reference sequence of the relay station and the ranging sequence, from the relay station; performing a correlation operation on each of the ranging sequence and the reference sequence in the added signal; estimating a time difference between the ranging sequence and the reference sequence depending on the correlation operation; and transmitting the signal to the relay station taking the time difference into account.

摘要翻译： 一种在通信系统中由移动台执行测距的方法。 该方法包括向中继站发送测距序列; 从所述中继站接收所述中继站的参考序列和所述测距序列的附加信号; 对所添加的信号中的测距序列和参考序列中的每一个进行相关运算; 根据相关运算估计测距序列与参考序列之间的时间差; 并将信号发送到中继站考虑时间差。

公开(公告)号：US20080018535A1

公开(公告)日：2008-01-24

申请号：US11776631

申请日：2007-07-12

申请人： In-Soo Hwang ,  Cheol-Woo You ,  Yung-Soo Kim ,  Dong-Ho Kim ,  Vahid Tarokh

发明人： In-Soo Hwang ,  Cheol-Woo You ,  Yung-Soo Kim ,  Dong-Ho Kim ,  Vahid Tarokh

IPC分类号： H01Q21/00

CPC分类号： H01Q21/00 ,  H01Q1/52

摘要： An apparatus and method for removing interference in a transmitting end of a multi-antenna system is provided. The method includes decomposing a channel matrix comprising channel coefficients for a plurality of terminals, calculating a value proportional to an interference signal for each of antennas, and calculating a sum of a transmission signal and the calculated value for each terminal and multiplying the calculated sum by the decomposed channel matrix. Accordingly, channel capacity can be improved by optimizing a data transfer rate and transmission power for each terminal.

摘要翻译： 提供一种用于消除多天线系统的发送端的干扰的装置和方法。 该方法包括分解包括多个终端的信道系数的信道矩阵，计算与每个天线的干扰信号成比例的值，并且计算每个终端的发送信号和计算值的和，并将计算出的和乘以 分解的信道矩阵。 因此，通过优化每个终端的数据传输速率和传输功率可以提高信道容量。

公开(公告)号：US20070218904A1

公开(公告)日：2007-09-20

申请号：US11715167

申请日：2007-03-07

申请人： Dae-Young Park ,  Cheol-Woo You ,  Seung-Young Park ,  Sang-Boh Yun ,  Yung-Soo Kim

发明人： Dae-Young Park ,  Cheol-Woo You ,  Seung-Young Park ,  Sang-Boh Yun ,  Yung-Soo Kim

IPC分类号： H04Q7/20

CPC分类号： H04W28/22 ,  H04W28/08 ,  H04W72/0486

摘要： Disclosed is a method for efficiently allocating resources in a multi-cell communication system. The method includes feeding back, by a mobile station to a base station, Modulation and Coding Scheme (MCSs) corresponding to loading factors; calculating, by the base station, efficient data rates corresponding to the MCSs fedback from the mobile station; allocating, by the base station, a loading factor according to the MCSs to the mobile station; and allocating resources to the mobile station according to the loading factor.

摘要翻译： 公开了一种在多小区通信系统中有效地分配资源的方法。 该方法包括由移动台向基站反馈与加载因子对应的调制和编码方案（MCS）; 由基站计算与从移动台反馈的MCS对应的有效数据速率; 由基站向移动台分配根据MCS的负载因子; 并根据负载因素向移动台分配资源。

公开(公告)号：US20070133480A1

公开(公告)日：2007-06-14

申请号：US11603652

申请日：2006-11-22

申请人： Seung-Hoon Nam ,  Cheol-Woo You ,  In-Soo Hwang ,  Yung-Soo Kim ,  Tarokh Vahid

发明人： Seung-Hoon Nam ,  Cheol-Woo You ,  In-Soo Hwang ,  Yung-Soo Kim ,  Tarokh Vahid

IPC分类号： H04B7/216

CPC分类号： H04L1/0021 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0025

摘要： A system and method are provided for controlling a data rate in a communication system. A transmitter sets threshold values for classifying Modulation and Coding Scheme (MCS) levels. When receiving information about an MCS level desired to be used in the receiver, the transmitter sets an MCS level to be actually used in the receiver and transmits information about the set MCS level to the receiver. When detecting that the information is to be transmitted to the transmitter, the receiver computes instantaneous link capacity using a channel estimation result, sets an MCS level mapped to the instantaneous link capacity, and transmits information about the set MCS level to the transmitter. The receiver receives the information about the MCS level to be actually used from the transmitter.

摘要翻译： 提供了一种用于控制通信系统中的数据速率的系统和方法。 发射机设置用于分类调制和编码方案（MCS）级别的阈值。 当接收到有关希望在接收机中使用的MCS级别的信息时，发射机设置在接收机中实际使用的MCS级别，并将关于所设置的MCS级别的信息发送给接收机。 当检测到要将信息发送到发射机时，接收机使用信道估计结果计算瞬时链路容量，设置映射到瞬时链路容量的MCS级别，并将关于所设置的MCS级别的信息发送到发射机。 接收机从发射机接收关于实际使用的MCS级别的信息。

公开(公告)号：US20070082624A1

公开(公告)日：2007-04-12

申请号：US11527981

申请日：2006-09-27

申请人： Young-Ho Jung ,  Yung-Soo Kim ,  Seung-Hoon Nam ,  Vahid Tarokh

发明人： Young-Ho Jung ,  Yung-Soo Kim ,  Seung-Hoon Nam ,  Vahid Tarokh

IPC分类号： H04B1/02 ,  H04B7/02

CPC分类号： H04L1/0662 ,  H04L1/002

摘要： Disclosed is a mobile communication system using a Multiple Input Multiple Output (MIMO) scheme. A transmitter of the mobile communication system, generates a unitary space-time matrix to correspond to a codeword if the codeword to be transmitted in a first time interval is input, multiplies the unitary space-time matrix by a first final transmission matrix denoting signals transmitted in a second time interval before the first time interval, thereby generating a second final transmission matrix denoting signals to be transmitted in the second time interval, and transmits signals corresponding to the second final transmission matrix through a plurality of transmit antennas in the second time interval.

摘要翻译： 公开了使用多输入多输出（MIMO）方案的移动通信系统。 移动通信系统的发射机如果输入要在第一时间间隔中发送的码字，则产生一个单位时空矩阵，以对应于码字，将单位时空矩阵乘以表示发送的信号的第一最终传输矩阵 在第一时间间隔之前的第二时间间隔中，从而生成表示在第二时间间隔中要发送的信号的第二最终传输矩阵，并且在第二时间间隔中通过多个发射天线发送与第二最终传输矩阵相对应的信号 。