公开(公告)号：US07417964B2

公开(公告)日：2008-08-26

申请号：US10872807

申请日：2004-06-21

申请人： Young-Kwon Cho ,  Katz Marcos Daniel ,  Seok-Hyun Yoon ,  Dong-Seek Park ,  Seong-Ill Park ,  Ho-Kyu Choi ,  Pan-Yuh Joo ,  Young-Kyun Kim ,  Hyeon-Woo Lee

发明人： Young-Kwon Cho ,  Katz Marcos Daniel ,  Seok-Hyun Yoon ,  Dong-Seek Park ,  Seong-Ill Park ,  Ho-Kyu Choi ,  Pan-Yuh Joo ,  Young-Kyun Kim ,  Hyeon-Woo Lee

IPC分类号： H04B7/204

CPC分类号： H04L5/006 ,  H04L5/0017 ,  H04L5/0046 ,  H04L5/0048

摘要： A transmitter for a mobile communication system based on an OFDM scheme and a method for controlling the same. The transmitter can implement a characteristic of a multiple access scheme based on an OFDM scheme, a characteristic of a CDMA scheme, and a characteristic of a frequency hopping scheme which has very strong resistance to the frequency selective fading. An apparatus for transmitting information bit sequences from a BS (Base Station) transmitter to different users, includes a plurality of channelizers for dividing a single frame of information bit sequences to be transmitted to individual users into a plurality of times according to a given time interval, simultaneously transmitting the information bit sequences to the individual users within the plurality of division times, dividing the information bit sequences, spreading the divided information bit sequences using different Walsh codes, converting the spread information bit sequences into a single sequence associated with the individual users, and outputting the single sequence; and a frequency hopper for dividing the single sequence, distributing the spread information bit sequences over a plurality of bandwidths capable of mapping-processing the spread information bit sequences with sub-carrier frequencies, and preventing each of the bandwidths from overlapping with time-frequency cells given by the given time interval.

摘要翻译： 一种用于基于OFDM方案的移动通信系统的发射机及其控制方法。 发射机可以基于OFDM方案，CDMA方案的特征以及对频率选择性衰落具有非常强的抵抗性的跳频方案的特性来实现多址方案的特性。 用于从BS（基站）发射机向不同用户发送信息比特序列的装置包括：多个信道化器，用于根据给定的时间间隔将要发送给各个用户的单个信息比特序列划分成多个时间 同时在多个分割时间内将信息比特序列发送给各个用户，分割信息比特序列，使用不同的沃尔什码扩展分割的信息比特序列，将扩展信息比特序列转换成与各个用户相关联的单个序列 并输出单个序列; 以及用于分割单个序列的频率漏斗，在扩展信息比特序列分布在能够对扩展信息比特序列进行映射处理的子载波频率的多个带宽上分布，并且防止每个带宽与时频小区重叠 由给定的时间间隔给出。

公开(公告)号：US07450532B2

公开(公告)日：2008-11-11

申请号：US11005398

申请日：2004-12-06

申请人： Chan-Byoung Chae ,  Hong-Sil Jeong ,  Katz Marcos Daniel ,  Seok Hyun Yoon ,  Dong-Seek Park ,  Chang-Ho Suh ,  Jae-Yoel Kim ,  Young-Kwon Cho

发明人： Chan-Byoung Chae ,  Hong-Sil Jeong ,  Katz Marcos Daniel ,  Seok Hyun Yoon ,  Dong-Seek Park ,  Chang-Ho Suh ,  Jae-Yoel Kim ,  Young-Kwon Cho

IPC分类号： H04J11/00

CPC分类号： H04B7/0417 ,  H04B7/0634 ,  H04L1/06

摘要： Disclosed is a method for transmitting/receiving data by use of feedback information in a closed loop multi input multi output (MIMO) mobile communication system. The method includes the steps of feeding back transmission eigenvector selection information determined through a singular value decomposition (SVD) of a channel matrix and transmitting the transmission eigenvector selection information to a transmitter; and receiving the feedback transmission eigenvector selection information, selecting transmission data according to the received transmission eigenvector selection information, mapping the selected transmission data to at least one transmission antenna, and transmitting the transmission data to a receiver.

摘要翻译： 公开了一种在闭环多输入多输出（MIMO）移动通信系统中通过使用反馈信息发送/接收数据的方法。 该方法包括以下步骤：反馈通过信道矩阵的奇异值分解（SVD）确定的发送特征向量选择信息，并将发送特征向量选择信息发送给发送机; 以及接收所述反馈传输特征向量选择信息，根据接收到的传输特征向量选择信息选择传输数据，将所选择的传输数据映射到至少一个传输天线，以及将传输数据发送到接收机。

公开(公告)号：US20050068931A1

公开(公告)日：2005-03-31

申请号：US10955131

申请日：2004-09-30

申请人： Young-Kwon Cho ,  Jung-Min Ro ,  Hyeon-Woo Lee ,  Seok-Hyun Yoon ,  Dong-Seek Park ,  Chang-Ho Suh ,  Chan-Byoung Chae ,  Su-Ryong Jeong

发明人： Young-Kwon Cho ,  Jung-Min Ro ,  Hyeon-Woo Lee ,  Seok-Hyun Yoon ,  Dong-Seek Park ,  Chang-Ho Suh ,  Chan-Byoung Chae ,  Su-Ryong Jeong

IPC分类号： H04B7/204 ,  H04B1/707 ,  H04J1/00 ,  H04J11/00 ,  H04J13/16 ,  H04L5/02 ,  H04L27/26 ,  H04J3/00

CPC分类号： H04L5/026 ,  H04L27/261

摘要： An apparatus and method for transmitting a reference signal in an Orthogonal Frequency Division Multiple Access (OFDMA) communication system in which a total frequency band is divided into a plurality of subcarrier bands. A time division multiplexer performs time division multiplexing such that the reference signal is transmitted for a first duration in a predetermined number of subcarrier bands from among the plurality of the subcarrier bands, and a signal other than the reference signal is transmitted for a second duration other than the first duration. A transmitter transmits the time-division multiplexed subcarrier band signals.

摘要翻译： 一种在正交频分多址（OFDMA）通信系统中发送参考信号的装置和方法，其中总频带被划分成多个子载波频带。 时分复用器执行时分多路复用，使得参考信号在多个子载波频带之间的预定数量的子载波频带中被发送第一持续时间，并且除了参考信号之外的信号被传送第二持续时间 比第一个持续时间。 发射机发射时分复用的副载波频带信号。

公开(公告)号：US07567545B2

公开(公告)日：2009-07-28

申请号：US10955131

申请日：2004-09-30

申请人： Young-Kwon Cho ,  Jung-Min Ro ,  Hyeon-Woo Lee ,  Seok-Hyun Yoon ,  Dong-Seek Park ,  Chang-Ho Suh ,  Chan-Byoung Chae ,  Su-Ryong Jeong

发明人： Young-Kwon Cho ,  Jung-Min Ro ,  Hyeon-Woo Lee ,  Seok-Hyun Yoon ,  Dong-Seek Park ,  Chang-Ho Suh ,  Chan-Byoung Chae ,  Su-Ryong Jeong

IPC分类号： H04B7/208

CPC分类号： H04L5/026 ,  H04L27/261

摘要： An apparatus and method for transmitting a reference signal in an Orthogonal Frequency Division Multiple Access (OFDMA) communication system in which a total frequency band is divided into a plurality of subcarrier bands. A time division multiplexer performs time division multiplexing such that the reference signal is transmitted for a first duration in a predetermined number of subcarrier bands from among the plurality of the subcarrier bands, and a signal other than the reference signal is transmitted for a second duration other than the first duration. A transmitter transmits the time-division multiplexed subcarrier band signals.

摘要翻译： 一种在正交频分多址（OFDMA）通信系统中发送参考信号的装置和方法，其中总频带被划分成多个子载波频带。 时分复用器执行时分多路复用，使得参考信号在多个子载波频带之间的预定数量的子载波频带中被发送第一持续时间，并且除了参考信号之外的信号被传送第二持续时间 比第一个持续时间。 发射机发送时分复用的副载波频带信号。

公开(公告)号：US07209460B2

公开(公告)日：2007-04-24

申请号：US11214312

申请日：2005-08-29

申请人： Frank Hanns Paul Fitzek ,  Carl Simon Wijting ,  Jeroen Theeuwes ,  Petar Popovski ,  Ramjee Prasad ,  Chang-Ho Suh ,  Seok-Hyun Yoon ,  Sung-Kwon Hong ,  Young-Kwon Cho ,  Young-Kyun Kim ,  Dong-Seek Park ,  Jung-Min Ro

发明人： Frank Hanns Paul Fitzek ,  Carl Simon Wijting ,  Jeroen Theeuwes ,  Petar Popovski ,  Ramjee Prasad ,  Chang-Ho Suh ,  Seok-Hyun Yoon ,  Sung-Kwon Hong ,  Young-Kwon Cho ,  Young-Kyun Kim ,  Dong-Seek Park ,  Jung-Min Ro

IPC分类号： H04Q7/20 ,  H04Q7/38

CPC分类号： H04W72/08 ,  H04W48/20 ,  H04W72/0453

摘要： A subcarrier assignment apparatus and a subcarrier assignment method, in which each of a plurality of Base Stations (BSs) constituting an Orthogonal Frequency Division Multiple Access (OFDMA) communication system provides services in the capacity of a serving BS to Mobile Stations (MSs). Channel quality information for the respective MSs are fed-back from the respective BSs. Subcarriers are assigned to the respective MSs according to a corresponding scheduling scheme in consideration of the channel quality information for the respective MSs, which are fed-back from the respective BSs, and then BSs which manage the subcarriers assigned to the respective MSs according to the corresponding scheduling scheme are selected. These operations provide site diversity to each of the MSs, and thus system capacity is maximized.

摘要翻译： 一种子载波分配装置和子载波分配方法，其中构成正交频分多址（OFDMA）通信系统的多个基站（BS）中的每个基站提供服务BS到移动台（MS）的能力的服务。 各个MS的信道质量信息从相应的BS反馈。 考虑到从各个BS反馈的各个MS的信道质量信息，根据相应的调度方案将子载波分配给相应的MS，然后根据相应的MS管理分配给各个MS的子载波的BS 选择相应的调度方案。 这些操作为每个MS提供站点分集，从而最大化系统容量。

公开(公告)号：US20060079240A1

公开(公告)日：2006-04-13

申请号：US11214312

申请日：2005-08-29

申请人： Frank Hanns Fitzek ,  Carl Wijting ,  Jeroen Theeuwes ,  Petar Popovski ,  Ramjee Prasad ,  Chang-Ho Suh ,  Seok-Hyun Yoon ,  Sung-Kwon Hong ,  Young-Kwon Cho ,  Young-Kyun Kim ,  Dong-Seek Park ,  Jung-Min Ro

发明人： Frank Hanns Fitzek ,  Carl Wijting ,  Jeroen Theeuwes ,  Petar Popovski ,  Ramjee Prasad ,  Chang-Ho Suh ,  Seok-Hyun Yoon ,  Sung-Kwon Hong ,  Young-Kwon Cho ,  Young-Kyun Kim ,  Dong-Seek Park ,  Jung-Min Ro

IPC分类号： H04Q7/20

CPC分类号： H04W72/08 ,  H04W48/20 ,  H04W72/0453

摘要： A subcarrier assignment apparatus and a subcarrier assignment method, in which each of a plurality of Base Stations (BSs) constituting an Orthogonal Frequency Division Multiple Access (OFDMA) communication system provides services in the capacity of a serving BS to Mobile Stations (MSs). Channel quality information for the respective MSs are fed-back from the respective BSs. Subcarriers are assigned to the respective MSs according to a corresponding scheduling scheme in consideration of the channel quality information for the respective MSs, which are fed-back from the respective BSs, and then BSs which manage the subcarriers assigned to the respective MSs according to the corresponding scheduling scheme are selected. These operations provide site diversity to each of the MSs, and thus system capacity is maximized.

摘要翻译： 一种子载波分配装置和子载波分配方法，其中构成正交频分多址（OFDMA）通信系统的多个基站（BS）中的每个基站提供服务BS到移动台（MS）的能力的服务。 各个MS的信道质量信息从相应的BS反馈。 考虑到从各个BS反馈的各个MS的信道质量信息，根据相应的调度方案将子载波分配给相应的MS，然后根据相应的MS管理分配给各个MS的子载波的BS 选择相应的调度方案。 这些操作为每个MS提供站点分集，从而最大化系统容量。

公开(公告)号：US20050094550A1

公开(公告)日：2005-05-05

申请号：US10978814

申请日：2004-11-01

申请人： Hoon Huh ,  Soon-Young Yoon ,  Jae-Hee Cho ,  Pan-Yuh Joo ,  Hyeon-Woo Lee ,  Dong-Seek Park

发明人： Hoon Huh ,  Soon-Young Yoon ,  Jae-Hee Cho ,  Pan-Yuh Joo ,  Hyeon-Woo Lee ,  Dong-Seek Park

IPC分类号： H04J11/00 ,  H04L27/26

CPC分类号： H04L5/0048 ,  H04L5/0007 ,  H04L25/0226 ,  H04L25/03866 ,  H04L27/2613 ,  H04L27/2662

摘要： A radio communication system divides an entire frequency band into a plurality of subcarrier bands, forms a symbol with signals on the subcarrier bands, forms a frame with a plurality of symbols, transmits a pilot signal within symbols in a predetermined position of the frame, and transmits a data signal within symbols other than the symbols for transmitting the pilot signal. A transmitter allocates subcarriers through which the reference signal is transmitted, wherein the subcarriers are allocated to have an exclusive relation with subcarriers through which reference signals of other transmitters are transmitted, generates the pilot signal, performs an inverse fast Fourier transform (IFFT) on the pilot signal by applying an IFFT size which is less than or equal to an IFFT size applied to the data signal, and transmits the IFFT-processed reference signal to a receiver.

摘要翻译： 无线电通信系统将整个频带划分为多个子载波频带，在子载波频带上形成具有信号的符号，形成具有多个符号的帧，在帧的预定位置的符号内发送导频信号，以及 在除了用于发送导频信号的符号之外的符号内发送数据信号。 发射机分配通过其发送参考信号的子载波，其中子载波被分配为与其他发射机的参考信号通过其发送的子载波具有排他关系，产生导频信号，在该载波上执行快速傅立叶逆变换（IFFT） 通过应用小于或等于应用于数据信号的IFFT尺寸的IFFT尺寸的IFFT尺寸的导频信号，并将IFFT处理的参考信号发送到接收机。

公开(公告)号：US07372910B2

公开(公告)日：2008-05-13

申请号：US10868410

申请日：2004-06-15

申请人： Chang-Ho Suh ,  Pan-Yuh Joo ,  Dong-Seek Park ,  Young-Kwon Cho

发明人： Chang-Ho Suh ,  Pan-Yuh Joo ,  Dong-Seek Park ,  Young-Kwon Cho

IPC分类号： H04K1/10

CPC分类号： H04J13/0014 ,  H04J11/003 ,  H04J13/107 ,  H04L5/0007 ,  H04L5/0048 ,  H04L25/0226 ,  H04L27/2605 ,  H04L27/2613 ,  H04L27/262 ,  H04L27/2657 ,  H04L27/2662

摘要： An apparatus for generating a preamble sequence in an orthogonal frequency division multiplexing (OFDM) communication system using A subcarriers in a frequency domain. A preamble sequence generator generates a length−M+N+k preamble sequence, where M+N+k is less than A, by combining a length−N Golay complementary sequence with a length−M Golay complementary sequence. An inverse fast Fourier transform (IFFT) processor assigns elements constituting the preamble sequence to the M+N+k subcarriers among the A subcarriers on a one-to-one mapping basis, assigns null data to remaining subcarriers excluding the M+N+k subcarriers from the A subcarriers, and then IFFT-transforms the assigned result into time-domain data.

摘要翻译： 一种用于在频域中使用A个子载波的正交频分复用（OFDM）通信系统中生成前置码序列的装置。 前导码序列生成器通过将长度-GGayay互补序列与长度-M Gayay互补序列组合来生成长度M + N + k个前导序列，其中M + N + k小于A。 逆快速傅里叶变换（IFFT）处理器在一对一映射基础上将构成前导序列的元素分配给A个子载波中的M + N + k个子载波，将零数据分配给除M + N + k之外的剩余子载波 子载波，然后IFFT将分配的结果转换成时域数据。

公开(公告)号：US07620117B2

公开(公告)日：2009-11-17

申请号：US11124888

申请日：2005-05-09

申请人： Chan-Byoung Chae ,  Hong-Sil Jeong ,  Katz Marcos Daniel ,  Dong-Seek Park ,  Young-Kwon Cho

发明人： Chan-Byoung Chae ,  Hong-Sil Jeong ,  Katz Marcos Daniel ,  Dong-Seek Park ,  Young-Kwon Cho

IPC分类号： H04L27/00

CPC分类号： H04L1/0643

摘要： Disclosed is an apparatus and method for encoding/decoding a space time block code in a mobile communication system using a multiple input multiple output scheme. In a transmitter employing a plurality of transmit antennas in the mobile communication system, if a signal to be transmitted is input, the transmit signal is pre-encoded according to a preset coding scheme, the pre-encoded signal is space-time mapped according to a number of the transmit antennas to employ a preset space time block coding scheme, and the space-time mapped signal is transmitted through the transmit antennas by applying the preset space time block coding scheme to the space-time mapped signal.

摘要翻译： 公开了一种使用多输入多输出方案在移动通信系统中对时空块码进行编码/解码的装置和方法。 在移动通信系统中采用多个发射天线的发射机中，如果要发射的信号被输入，则根据预设的编码方案对发射信号进行预编码，根据预编码信号进行空时映射 使用预设空间时间块编码方案的多个发送天线，并且通过将预设空间时间块编码方案应用于时空映射信号，通过发送天线发送空时映射信号。

公开(公告)号：US07606320B2

公开(公告)日：2009-10-20

申请号：US11156689

申请日：2005-06-20

申请人： Chan-Byoung Chae ,  Hong-Sil Jeong ,  Young-Kwon Cho ,  Dong-Seek Park ,  Katz Marcos Daniel

发明人： Chan-Byoung Chae ,  Hong-Sil Jeong ,  Young-Kwon Cho ,  Dong-Seek Park ,  Katz Marcos Daniel

IPC分类号： H04B7/02

CPC分类号： H04B7/068

摘要： An apparatus and method for SFBC coding and decoding in a communication system using a plurality of (Nt) Tx antennas are provided. In a transmitter using Nt transmit antennas, a pre-coder pre-codes an input symbol sequence using a pre-coding matrix. The pre-coding matrix is produced by puncturing a unitary matrix in a predetermined method. An encoder generates a plurality of vectors by grouping the symbols of the pre-coded symbol sequence by twos, space-frequency maps each of the vectors by encoding each of the vectors in an Alamouti coding scheme, and provides each of the space-frequency mapped symbols to a predetermined OFDM modulator.

摘要翻译： 提供了一种在使用多个（Nt）个Tx天线的通信系统中用于SFBC编码和解码的装置和方法。 在使用Nt个发射天线的发射机中，预编码器使用预编码矩阵对输入符号序列进行预编码。 预编码矩阵是通过以预定方法对单一矩阵进行打孔而产生的。 编码器通过对预编码符号序列的符号进行二进制分组来生成多个向量，通过以Alamouti编码方案对每个向量进行编码，对每个向量进行空间频率映射，并且提供每个空间频率映射 符号到预定的OFDM调制器。