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1. 发明申请

WO2008066271A1 ITERATIVE RECEPTION METHOD AND ITERATIVE RECEIVER 审中-公开
标题翻译：迭代接收方法和迭代接收机
公开(公告)号：WO2008066271A1
公开(公告)日：2008-06-05
申请号：PCT/KR2007/005792
申请日：2007-11-16
申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE , KIM, Seong-Rag , NAM, Jun-Young , CHUNG, Hyun Kyu
发明人： KIM, Seong-Rag , NAM, Jun-Young , CHUNG, Hyun Kyu
IPC分类号： H04B1/69
CPC分类号： H04B1/7105 , H04L27/2647
摘要： An iterative reception method and iterative receiver in a mobile communication system are provided. In order to remove inter-cell interference of a signal that is iteratively received in a multi-cell environment, a soft determination value of different cells excluding a specific cell is re-spread to be used. In addition, in order to improve reception performance of the iterative receiver that performs the interference removal by using the soft determination value, channel estimation is iteratively performed on the iteratively received signal by using a soft determination value of a previous order of the specific cell to update a channel estimation value. Accordingly, it is possible to reduce complexity of implementation and effectively remove the inter-cell interference by using the soft determination value.
摘要翻译：提供了一种移动通信系统中的迭代接收方法和迭代接收机。为了消除在多小区环境中迭代地接收的信号的小区间干扰，重新扩展除了特定小区之外的不同小区的软判定值。此外，为了通过使用软判定值来提高执行干扰去除的迭代接收机的接收性能，通过使用特定小区的先前顺序的软判定值对迭代接收信号迭代地进行信道估计，更新信道估计值。因此，可以通过使用软判定值来降低实现的复杂度并有效地消除小区间干扰。

2. 发明申请

WO2008069467A1 ITERATIVE RECEIVER AND METHOD FOR DETECTING TRANSMITTED SIGNAL THEREOF 审中-公开
标题翻译：用于检测其传输信号的迭代接收器和方法
公开(公告)号：WO2008069467A1
公开(公告)日：2008-06-12
申请号：PCT/KR2007/005688
申请日：2007-11-13
申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE , KIM, Seong-Rag , NAM, Jun-Young , CHUNG, Hyun Kyu
发明人： KIM, Seong-Rag , NAM, Jun-Young , CHUNG, Hyun Kyu
IPC分类号： H04B7/02
CPC分类号： H04L1/0048 , H04B7/0854 , H04L1/005 , H04L1/06
摘要： In an iterative receiver, a signal detector estimates interference from an estimated transmitted signal, and cancels the estimated interference from a signal received through an antenna. A decoder performs channel decoding by using the interference cancelled received signal. A soft decision unit performs a soft decision process on the transmitted signal by using the channel decoded signal. A channel estimator estimates a channel by using the soft decision applied transmitted signal and the received signal. A covariance estimator estimates covariance on the sum signal of the interference and noise by using the soft decision applied transmitted signal, the received signal, and the estimated channel. A hard decision unit determines the transmitted signal by using the channel decoded signal after interference cancellation, channel decoding, estimated transmitted signal updating, channel estimation, and covariance estimation are iterated a number of times.
摘要翻译：在迭代接收机中，信号检测器估计来自估计的发射信号的干扰，并且从通过天线接收的信号中消除所估计的干扰。解码器通过使用干扰消除的接收信号来执行信道解码。软判决单元通过使用信道解码信号对所发送的信号进行软判定处理。信道估计器通过使用软判决应用发送信号和接收信号来估计信道。协方差估计器通过使用软判决应用发射信号，接收信号和估计信道来估计干扰和噪声的和信号的协方差。硬判决单元通过使用干扰消除之后的信道解码信号来确定发送信号，信道解码，估计的发送信号更新，信道估计和协方差估计被重复多次。

3. 发明申请

WO2008066270A1 ITERATIVE RECEPTION METHOD AND ITERATIVE RECEIVER 审中-公开
标题翻译：迭代接收方法和迭代接收机
公开(公告)号：WO2008066270A1
公开(公告)日：2008-06-05
申请号：PCT/KR2007/005791
申请日：2007-11-16
申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE , NAM, Jun-Young , KIM, Seong-Rag , CHUNG, Hyun Kyu
发明人： NAM, Jun-Young , KIM, Seong-Rag , CHUNG, Hyun Kyu
IPC分类号： H04B1/69
CPC分类号： H04L5/0021 , H04B1/7105 , H04L25/0212 , H04L25/022 , H04L25/024 , H04L25/061 , H04L2025/03414
摘要： An iterative reception method and iterative receiver in a mobile communication system are provided. In order to remove inter-cell interference of a signal that is iteratively received in a multi-cell environment, a hard determination value of different cells excluding a specific cell is used. In addition, in order to remove interference of different user in the specific cell caused by inaccurate channel estimation, the hard determination value of the specific cell signal is used. Further, in order to improve reception performance of the iterative receiver that performs the interference by using the hard determination value, channel estimation is iteratively performed on the iteratively received signal by using a hard determination value of the specific cell to update a channel estimation value.
摘要翻译：提供了一种移动通信系统中的迭代接收方法和迭代接收机。为了消除在多小区环境中迭代地接收的信号的小区间干扰，使用除特定小区之外的不同小区的硬判定值。此外，为了消除由不正确的信道估计引起的特定小区中的不同用户的干扰，使用特定小区信号的硬判定值。此外，为了通过使用硬判定值来提高执行干扰的迭代接收机的接收性能，通过使用特定小区的硬判定值来更新信道估计值，迭代地对迭代接收的信号进行信道估计。

4. 发明申请

WO2008066226A3 DECODING METHOD AND DEVICE FOR DETECTING TRANSMISSION SIGNAL IN MULTIPLE-INPUT MULTIPLE-OUTPUT SYSTEM 审中-公开
公开(公告)号：WO2008066226A3
公开(公告)日：2008-06-05
申请号：PCT/KR2007/002396
申请日：2007-05-16
申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE , PARK, In-Sook , AHN, Jae-Young , KIM, Seong-Rag , CHUNG, Hyun-Kyu
发明人： PARK, In-Sook , AHN, Jae-Young , KIM, Seong-Rag , CHUNG, Hyun-Kyu
IPC分类号： H04B7/04 , G06F17/16
摘要： The present invention relates to a decoding method and a decoding device for detecting a transmission signal in a multiple-input multiple-output (MIMO) system. In the method, a sorted QR decomposition for calculating a unitary matrix and an upper triangular matrix, the received signal is multiplied by a transpose matrix of the unitary matrix to calculate a vector, an initial detection lattice point and a minimum eigenvalue is calculated from the vector and the upper triangular matrix, and a maximum likelihood point is detected by using the initial detection lattice point and the minimum eigenvalue. In addition, a transmission signal detecting device includes a QR decomposition unit for performing a sorted QR decomposition for the received signal, a vector calculating unit for calculating a vector by multiplying the received signal by a transpose matrix of a unitary matrix, an initial detection lattice point detecting unit for calculating an initial detection lattice point, an eigenvalue extractor for calculating a minimum eigenvalue, and a maximum likelihood point detecting unit for detecting a maximum likelihood point by using the initial detection lattice point and the minimum eigenvalue.

5. 发明申请

WO2006025635A1 A STRUCTURED SPACE-TIME CODE ACHIEVING THE FULL DIVERSITY AND FULL RATE AND GENERATING METHOD THEREOF, AND MULTI-INPUT MULTI-OUTPUT SYSTEM 审中-公开
标题翻译：实现完全多样性和全速率及其产生方法的结构化空间时间码，以及多输入多输出系统
公开(公告)号：WO2006025635A1
公开(公告)日：2006-03-09
申请号：PCT/KR2005/000558
申请日：2005-02-28
申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE , AJOU UNIVERSITY INDUSTRY COOPERATION FOUNDATION , LEE, Seung-Joon , YEH, Choong-Il , KWON, Dong-Seung , HWANG, Seung-Ku , LIM, Hyoung-Soo , CHOI, In-Kyeong , OH, Jong-Ee , LIM, Kwang-Jae , KIM, Seong-Rag , SONG, Young-Seog , LEE, Yu-Ro , OH, Seong-Keun , LEE, Moon-Il
发明人： LEE, Seung-Joon , YEH, Choong-Il , KWON, Dong-Seung , HWANG, Seung-Ku , LIM, Hyoung-Soo , CHOI, In-Kyeong , OH, Jong-Ee , LIM, Kwang-Jae , KIM, Seong-Rag , SONG, Young-Seog , LEE, Yu-Ro , OH, Seong-Keun , LEE, Moon-Il
IPC分类号： H04B7/02
CPC分类号： H04B7/02 , H04B7/0697 , H04L1/0612
摘要： A space-time code used for a transmitter to transmit a plurality of data symbols to a receiver in a MIMO system, the space-time code including a code word matrix for transmitting an amount of data symbols corresponding to a product of the number of transmit antennas and a spatial multiplexing rate during one block period, wherein a row index indicates combined signals transmitted through different transmit antennas and a column index indicates time slots that correspond to the number of transmit antennas, and wherein the number of data symbols allocated to each transmit antenna in a code block corresponds to the spatial multiplexing rate, and the data symbols are combined by different combining coefficients for each transmit antenna at every time slot, and simultaneously transmitted through different transmit antennas, and each transmit antenna transmits a different set of data symbols at every time slot.
摘要翻译：用于发射机的空时码将多个数据符号发送到MIMO系统中的接收机，所述时空码包括用于发送对应于发射次数的乘积的数据符号量的码字矩阵天线和一个块周期内的空间多路复用率，其中行索引表示通过不同发射天线发射的组合信号，列索引指示对应于发射天线数的时隙，并且其中分配给每个发射的数据符号数代码块中的天线对应于空间复用速率，并且通过在每个时隙对每个发射天线的不同组合系数组合数据符号，并且同时通过不同的发射天线发射，并且每个发射天线发射不同的数据符号集合在每个时间段

6. 发明申请

WO2005104589A1 TRANSMITTER AND RECEIVER FOR MULTICARRIER SYSTEM AND SUBCARRIER ASSIGNMENT METHOD THEREOF 审中-公开
标题翻译：多媒体系统的发射机和接收机及其分配方法
公开(公告)号：WO2005104589A1
公开(公告)日：2005-11-03
申请号：PCT/KR2004/003470
申请日：2004-12-27
申请人： Electronics and Telecommunications Research Institute , SAMSUNG ELECTRONICS CO., LTD. , KT Corporation , SK Telecom Co., Ltd. , KTFREETEL CO., LTD. , HANARO TELECOM, INC. , OH, Jong-Ee , KWON, Dong-Seung , KIM, Seong-Rag , CHOI, In-Kyeong , YEH, Choong-Il , CHO, Seong-Chul , LEE, Yu-Ro
发明人： KWON, Dong-Seung , KIM, Seong-Rag , CHOI, In-Kyeong , YEH, Choong-Il , CHO, Seong-Chul , LEE, Yu-Ro
IPC分类号： H04Q7/36
CPC分类号： H04L27/2608 , H04L5/023 , H04W72/044
摘要： Disclosed is a subcarrier assignment method in a multicarrier communication system, e.g. an OFDM communication system. A frequency bandwidth is divided into a plurality of groups having a predetermined number of contiguous subcarriers, a (p n -1, 1, p n -1) Reed-Solomon code on the Galois Field (p n ) to which identifiers are added according to primitive elements is used, a subcarrier is selected from each group to generate a subchannel, and the generated subchannel is assigned to a base station user. Accordingly, the subcarrier assignment method provides easy cell planning even when using a considerably short Reed-Solomon sequence. The frequency diversity effect is provided to the base station user, and the Reed-Solomon sequence for averaging adjacent cell interference is generated to increase the number of identifiable base stations.
摘要翻译：公开了一种多载波通信系统中的子载波分配方法，例如， OFDM通信系统。频率带宽被划分为具有预定数量的连续子载波的多个组，在Galois域（p ）上的第（p -1,1，p -1）Reed-Solomon码使用根据原始元素添加的标识符，从每个组中选择副载波以生成子信道，并且将生成的子信道分配给基站用户。因此，即使当使用相当短的Reed-Solomon序列时，子载波分配方法也提供了容易的小区规划。频率分集效应被提供给基站用户，并且生成用于平均相邻小区干扰的里德 - 索罗门序列以增加可识别基站的数量。

7. 发明申请

WO2005048497A3 METHOD FOR ESTIMATING TIME VARYING CHANNELS IN OFDM (ORTHOGONAL FREQUENCY DIVISION MULTIPLEX) MULTIPLE TRANSMIT ANTENNA SYSTEM 审中-公开
公开(公告)号：WO2005048497A3
公开(公告)日：2005-05-26
申请号：PCT/KR2004/002436
申请日：2004-09-22
申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE , SAMSUNG ELECTRONICS CO., LTD. , KT Corporation , SK Telecom Co., Ltd. , KTFREETEL CO., LTD. , HANARO TELECOM, INC. , LEE, Yu-Ro , HONG, Dae-Sik , KIM, Seong-Rag , CHOI, In-Kyeong , YEH, Choong-Il , LIM, Hyoung-Soo , CHO, Seong-Chul , OH, Jong-Ee , KWON, Dong-Seung , AHN, Jee-Hwan , HWANG, Seung-Ku
发明人： LEE, Yu-Ro , HONG, Dae-Sik , KIM, Seong-Rag , CHOI, In-Kyeong , YEH, Choong-Il , LIM, Hyoung-Soo , CHO, Seong-Chul , OH, Jong-Ee , KWON, Dong-Seung , AHN, Jee-Hwan , HWANG, Seung-Ku
IPC分类号： H04J11/00
摘要： Disclosed is a time-varying channel estimation method in an OFDM which comprises: (a) generating a pilot symbol by a comb type method for inserting a pilot symbol into a specific subcarrier for each interval in each OFDM symbol; (b) transmitting the pilot symbol to a receiver from a transmitter through a time-varying channel by using at least two multiple transmit antennas; (c) receiving the pilot signal through the time-varying channel; and (d) estimating a first channel of from among the time-varying channel according to an interpolation method which uses a temporal correlation of a second channel and a third channel.

8. 发明申请

WO2006052058A2 MULTI-INPUT MULTI-OUTPUT SYSTEM FOR ENHANCING TRANSMISSION PERFORMANCE 审中-公开
标题翻译：用于增强传输性能的多输入多输出系统
公开(公告)号：WO2006052058A2
公开(公告)日：2006-05-18
申请号：PCT/KR2005/002592
申请日：2005-08-10
申请人： ElECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE , INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY , SONG, Young-Seog , KIM, Seong-Rag , CHOI, In-Kyeong , YEH, Choong-Il , LEE, Seung-Joon , LIM, Hyoung-Soo , LIM, Kwang-Jae , LEE, Yu-Ro , OH, Jong-Ee , KWON, Dong-Seung , HWANG, Seung-Ku , LEE, Chung-Yong , SHIN, Myeong-Cheol
发明人： SONG, Young-Seog , KIM, Seong-Rag , CHOI, In-Kyeong , YEH, Choong-Il , LEE, Seung-Joon , LIM, Hyoung-Soo , LIM, Kwang-Jae , LEE, Yu-Ro , OH, Jong-Ee , KWON, Dong-Seung , HWANG, Seung-Ku , LEE, Chung-Yong , SHIN, Myeong-Cheol
IPC分类号： H04B7/04 , H04B7/06 , H04N7/08 , H04L1/00 , H04L1/06
CPC分类号： H04B7/061 , H04B7/0669 , H04B7/0691 , H04B7/08 , H04L1/0003 , H04L1/0637 , H04L1/0675
摘要： The present invention relates to a multi-input multi-output (MIMO) system for enhancing transmission performance. The MIMO system uses space-time encoding and transmit antenna selection methods, and includes a transmitter and a receiver. The transmitter includes N transmit antennas that are more than M transmit antennas used for transmitting a signal to a space channel, selects the M transmit antennas among the N transmit antennas, and transmits a symbol by space-time encoding the symbol. The receiver includes M receive antennas for receiving a signal from the space channel, detects an information symbol by using the signal received through the receive antenna, generates transmit antenna selection information for selecting M transmit antennas among N transmit antennas with reference to a channel estimate, and returns the information to the transmitter.
摘要翻译：本发明涉及用于增强传输性能的多输入多输出（MIMO）系统。 MIMO系统使用空时编码和发射天线选择方法，并且包括发射机和接收机。发射机包括比用于向空间信道发射信号的M个发射天线多的N个发射天线，选择N个发射天线中的M个发射天线，并通过空间编码该符号来传输符号。接收机包括用于从空间信道接收信号的M个接收天线，通过使用通过接收天线接收的信号来检测信息符号，生成用于参考信道估计在N个发射天线之中选择M个发射天线的发射天线选择信息，并将信息返回给发射机。

9. 发明申请

WO2005062729A3 A MIMO-OFDM SYSTEM USING EIGENBEAMFORMING METHOD 审中-公开
公开(公告)号：WO2005062729A3
公开(公告)日：2005-07-14
申请号：PCT/KR2004/003065
申请日：2004-11-25
申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE , CHOI, In-Kyeong , KIM, Seong-Rag , KWON, Dong-Seung , CHOI, Jin-Ho
发明人： CHOI, In-Kyeong , KIM, Seong-Rag , KWON, Dong-Seung , CHOI, Jin-Ho
IPC分类号： H04B7/06
摘要： Disclosed is a MIMO-OFDM system, wherein the transmitter comprises a serial/parallel converter for converting continuouslyinputted symbols of the number of subcarriers to K parallel signals; a signal reproducer for reproducing K parallel signals by the number of transmit antennas L an eigenmode generator for generating eigenbeam of the reproduced signals outputted from the signal reproducer at each subcarrier, on the basis of Nf eigenbeam forming vectors which are fed backlong-term and information of a best eigenbeam forming vector at each subcarrier which is fed back short-term, through the feedback device; and aplurality of inverse Fourier converters for receiving the signals outputted from the eigenmode generator and generating an OFDM symbol.

10. 发明申请

WO2005043791A2 METHOD FOR CONSTRUCTING DOWNLINK FRAME IN WIRELESS COMMUNICATION SYSTEM USING ORTHOGONAL FREQUENCY DIVISION MULTIPLE ACCESS 审中-公开
标题翻译：使用正交频分多址访问在无线通信系统中构建下行链路帧的方法
公开(公告)号：WO2005043791A2
公开(公告)日：2005-05-12
申请号：PCT/KR2004/002445
申请日：2004-09-23
申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE , SAMSUNG ELECTRONICS CO., LTD. , KT Corporation , SK TELECOM CO., LTD. , KTFREETEL CO., LTD. , HANARO TELECOM, INC. , LIM, Hyoung-Soo , KWON, Dong-Seung , KIM, Seong-Rag , CHOI, In-Kyeong , YEH, Choong-Il , CHO, Seong-Chul , LEE, Yu-Ro , OH, Jong-Ee , HWANG, Seung-Ku , YOON, Soon-Young , SUNG, Sang-Hoon , CHO, Jae-Hee , HWANG, In-Seok , HUH, Hoon
发明人： LIM, Hyoung-Soo , KWON, Dong-Seung , KIM, Seong-Rag , CHOI, In-Kyeong , YEH, Choong-Il , CHO, Seong-Chul , LEE, Yu-Ro , OH, Jong-Ee , HWANG, Seung-Ku , YOON, Soon-Young , SUNG, Sang-Hoon , CHO, Jae-Hee , HWANG, In-Seok , HUH, Hoon
IPC分类号： H04L
CPC分类号： H04L27/2613
摘要： Disclosed is a method for constructing a downlink frame in a mobile data communication system using an OFDMA method. To construct the downlink frame, a single preamble is arranged at the head of the downlink frame, and a plurality of data symbols are arranged following the preamble. Then, a plurality of pilot symbols are inserted between the data symbols over the downlink frame at a predetermined period. Accordingly, a channel variation can be rapidly tracked using the preamble and pilot symbols. Furthermore, interference between adjacent cells is minimized and averaged to make a frequency reuse rate be 1, such that arrangement of multiple cells can be easily designed.
摘要翻译：公开了一种使用OFDMA方法在移动数据通信系统中构建下行链路帧的方法。为了构建下行链路帧，在下行链路帧的头部设置单个前导码，并且在前导码之后配置多个数据符号。然后，多个导频符号以预定周期通过下行链路帧插入数据符号之间。因此，可以使用前同步码和导频符号快速跟踪信道变化。此外，相邻小区之间的干扰被最小化并被平均以使频率重用率为1，使得可以容易地设计多个小区的布置。

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