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1. 发明申请

WO2005048497A2 METHOD FOR ESTIMATING TIME VARYING CHANNELS IN OFDM (ORTHOGONAL FREQUENCY DIVISION MULTIPLEX) MULTIPLE TRANSMIT ANTENNA SYSTEM 审中-公开
标题翻译：用于估计OFDM（正交频分多路复用）多个发射天线系统中的时变频信道的方法
公开(公告)号：WO2005048497A2
公开(公告)日：2005-05-26
申请号：PCT/KR2004002436
申请日：2004-09-22
申请人： KOREA ELECTRONICS TELECOMM , SAMSUNG ELECTRONICS CO LTD , KT CORP , SK TELECOM CO LTD , KT FREETEL 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 , H04L20060101 , H04L
CPC分类号： H04L25/0232 , H04L25/0204 , H04L27/2647
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.
摘要翻译：公开了一种OFDM中的时变信道估计方法，包括：（a）通过梳状方法生成导频符号，用于在每个OFDM符号中针对每个间隔将导频符号插入特定子载波; （b）通过使用至少两个多个发射天线通过时变信道从发射机向接收机发射导频符号; （c）通过时变信道接收导频信号; 以及（d）根据使用第二信道和第三信道的时间相关性的内插方法，估计时变信道中的第一信道。

2. 发明申请

WO2005050887A3 METHOD FOR CONFIGURING UPLINK FRAME IN OFDMA-BASED WIRELESS COMMUNICATION SYSTEM 审中-公开
标题翻译：在基于无线通信无线通信系统中配置上行帧的方法
公开(公告)号：WO2005050887A3
公开(公告)日：2007-10-11
申请号：PCT/KR2004001958
申请日：2004-08-04
申请人： KOREA ELECTRONICS TELECOMM , SAMSUNG ELECTRONICS CO LTD , KT CORP , SK TELECOM CO LTD , KT FREETEL CO LTD , HANARO TELECOM INC , LEE YU-RO , KWON DONG-SEUNG , KIM SEONG-RAG , CHOI IN-KYEONG , YEH CHOONG-IL , LIM HYOUNG-SOO , CHO SEONG-CHUL , OH JONG-EE , HWANG SEUNG-KU , AHN JEE-HWAN , YOON SOON-YOUNG , SUNG SANG-HOON , CHO JAE-HEE , HWANG IN-SEOK , HUH HOON
发明人： LEE YU-RO , KWON DONG-SEUNG , KIM SEONG-RAG , CHOI IN-KYEONG , YEH CHOONG-IL , LIM HYOUNG-SOO , CHO SEONG-CHUL , OH JONG-EE , HWANG SEUNG-KU , AHN JEE-HWAN , YOON SOON-YOUNG , SUNG SANG-HOON , CHO JAE-HEE , HWANG IN-SEOK , HUH HOON
IPC分类号： H04J11/00 , H04L27/26 , H04L20060101
CPC分类号： H04L5/023 , H04L25/023
摘要： Disclosed is a method for configuring an uplink frame in an OFDMA based wireless communication system. The total band of the uplink frame is divided into a predetermined number of subcarrier groups. Subcarriers within the respective allocated subcarrier groups are allocated to the subchannel defined for a predetermined number of consecutive symbols defined by slots in the uplink frame. Pilot subcarriers are allocated by the unit of the predetermined number of symbols so as to allow channel estimation from among the allocated subcarriers. Accordingly, data subcarriers are allocated by minimizing collision with specific users of adjacent cells so as to enable channel estimation using preambles in a cellular system, and some positions of the data subcarriers are allocated for pilots, thereby allowing synchronous demodulation and improving frequency reuse rates.
摘要翻译：公开了一种在基于OFDMA的无线通信系统中配置上行链路帧的方法。将上行链路帧的总频带划分为预定数量的子载波组。将分配的子载波组内的子载波分配给由上行链路帧中的时隙定义的预定数量的连续符号所定义的子信道。导频子载波由预定数目的符号的单位分配，以便允许从所分配的子载波中进行信道估计。因此，通过最小化与相邻小区的特定用户的冲突来分配数据子载波，以便能够使用蜂窝系统中的前同步码进行信道估计，并且为导频分配数据子载波的一些位置，从而允许同步解调和提高频率重用率。

3. 发明申请

WO2005043791A3 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：WO2005043791A3
公开(公告)日：2007-09-20
申请号：PCT/KR2004002445
申请日：2004-09-23
申请人： KOREA ELECTRONICS TELECOMM , SAMSUNG ELECTRONICS CO LTD , KT CORP , SK TELECOM CO LTD , KT FREETEL 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： H04J11/00 , H04L27/26 , H04L20060101
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。

4. 发明申请

WO2005053198A3 METHOD FOR ALLOCATING PILOT SUBCARRIERS, METHOD AND DEVICE FOR TRANSMITTING AND RECEIVING PILOT SUBCARRIERS IN ORTHOGONAL FREQUENCY DIVISION MULTIPLEX SYSTEM 审中-公开
标题翻译：用于分配试点分支机构的方法，用于在正交频分多路复用系统中发送和接收导频子载波的方法和装置
公开(公告)号：WO2005053198A3
公开(公告)日：2007-12-06
申请号：PCT/KR2004001836
申请日：2004-07-22
申请人： KOREA ELECTRONICS TELECOMM , SAMSUNG ELECTRONICS CO LTD , SK TELECOM CO LTD , KT CORP , KT FREETEL CO LTD , HANARO TELECOM INC , LEE YU-RO , YEH CHOONG-IL , LIM HYOUNG-SOO , OH JONG-EE , KWON DONG-SEUNG
发明人： LEE YU-RO , YEH CHOONG-IL , LIM HYOUNG-SOO , OH JONG-EE , KWON DONG-SEUNG
IPC分类号： H04J11/00 , H04L27/26 , H04L20060101
CPC分类号： H04L5/0048 , H04L5/0007 , H04L25/0226 , H04L25/0232
摘要： Disclosed is a method for allocating pilot subcarriers, and a method and device for transmitting and receiving pilot subcarriers in an OFDMA system. The method for allocating pilot subcarriers partitions the total bandwidth of the downlink channel into subcarrier groups having a predetermined number of subcarriers, allocates pilots to the subcarriers of the subcarrier group according to specific pilot patterns, and cycles positions of the inter-cell pilots within a specific group by a specific cycle to exchange the determined pilots according to a predetermined reference. Accordingly, pilot collision is reduced to improve accuracy of channel estimation, a number of distinguishable pilots is increased to easily perform cell planning, and a system is deployed without special cell planning.
摘要翻译：公开了一种用于分配导频子载波的方法，以及用于在OFDMA系统中发送和接收导频子载波的方法和装置。用于分配导频子载波的方法将下行链路信道的总带宽划分为具有预定数量子载波的子载波组，根据特定导频模式将导频分配给副载波组的子载波，并且将小区内导频的周期位置特定组，按照预定参考交换所确定的导频。因此，减少导频冲突以提高信道估计的准确性，增加多个可区分的导频以容易地执行小区规划，并且在没有特殊小区规划的情况下部署系统。

5. 发明申请

WO2005060108A3 METHOD FOR ALLOCATING DATA AND PILOTS, AND TRANSMITTING METHOD AND DEVICE AND RECEIVING METHOD AND DEVICE USING THE SAME IN ORTHOGONAL FREQUENCY DIVISION MULTIPLE ACCESS SYSTEM 审中-公开
标题翻译：用于分配数据和引导的方法，以及发送方法和设备以及使用其在正交频分多址访问系统中接收方法和设备
公开(公告)号：WO2005060108A3
公开(公告)日：2006-08-31
申请号：PCT/KR2004001835
申请日：2004-07-22
申请人： UTE ELECTRONICS & TELECOMMUNICATIONS RES INST , SAMSUNG ELECTRONICS CO LTD , SK TELECOM CO LTD , KT CORP , KT FREETEL CO LTD , HANARO TELECOM INC , LEE YU-RO , OH JONG-EE , YEH CHOONG-IL , LIM HYOUNG-SOO , KWON DONG-SEUNG
发明人： LEE YU-RO , OH JONG-EE , YEH CHOONG-IL , LIM HYOUNG-SOO , KWON DONG-SEUNG
IPC分类号： H04J11/00 , H04B20060101 , H04B7/12
CPC分类号： H04B7/12 , H04L5/0044 , H04L5/0048 , H04W72/00
摘要： Disclosed is a method for allocating data and pilots, a transmitting method and device, a receiving method and device in an OFDMA system. A terminal partitions subcarrier groups and symbols from an uplink channel based on a basic pilot pattern generated by a specific reference, receives at least one subchannel based on the partitioned subcarrier groups and symbols, hops the subcarrier groups caused by the subchannel according to hopping patterns, allocates data, and differently positions the pilots per subcarrier group based on the basic pilot pattern. Accordingly, the probability of pilot collision between adjacent cells is reduced, and accuracy of channel estimation is increased through boosting the pilot subcarrier power.
摘要翻译：公开了一种在OFDMA系统中分配数据和导频的方法，发送方法和设备，接收方法和设备。终端基于由特定基准产生的基本导频模式，从上行链路信道分割子载波组和符号，根据划分的子载波组和符号接收至少一个子信道，根据跳频图案跳过由子信道引起的子载波组，分配数据，并且基于基本导频模式不同地定位每个子载波组的导频。因此，相邻小区之间的导频冲突的概率降低，并且通过提升导频副载波功率来增加信道估计的精度。

6. 发明申请

WO2006052058A3 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：WO2006052058A3
公开(公告)日：2006-10-26
申请号：PCT/KR2005002592
申请日：2005-08-10
申请人： KOREA ELECTRONICS TELECOMM , IND ACADEMIC COOP , 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 , H04L1/00 , H04L1/06 , H04N7/08
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 enhancin transmission performance. The MlMO system uses space-time encoding and transmi antenna selection methods, and includes a transmitter (100) and a receiver (200). Th transmitter (100) includes N transmit antennas (130-1 , 130-4) that are more than M tansrni antennas (130-1 , 130-3) used for tansmitting a signal to space channel, selects the M transmi antennas (130-1, 130-3) among the N tansmit antennas (130-3 130-4), and tansmits symbol by space-time encoding the symbol. The receiver (200) includes M receive antenna (120-1 , 210-2) for receiving a signal from the space channel, detects an information symb by using the signal received through the receive antenna (210-1 , 210-2), generates transmi antenna selection information for selecting M transmit antennas (130-1 , 130-3) among tansmit antennas (i30-1,...7130-4) with reference to a channel estimate, and returns th information to the tansmitter.
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。 M10M系统使用时空编码和天线选择方法，并且包括发射机（100）和接收机（200）。 Th发射机（100）包括N个发射天线（130-1,130-4），其多于用于将信号转发到空间信道的M个天线（130-1,130-3），选择M个发射天线（130 -1,130-3），并且通过对码元进行空时编码来对码元进行篡改。接收器（200）包括用于从空间信道接收信号的M个接收天线（120-1,210-2），通过使用通过接收天线（210-1,210-2）接收的信号来检测信息，生成用于参照信道估计在篡改天线（i30-1，... 7130-4）中选择M个发送天线（130-1,130-3）的发送天线选择信息，并将该信息返回给转发器。

7. 发明申请

WO2007049944A3 APPARATUS AND METHOD FOR TRANSMITTING SIGNALS WITH MULTIPLE ANTENNAS 审中-公开
标题翻译：用于发送具有多个天线的信号的装置和方法
公开(公告)号：WO2007049944A3
公开(公告)日：2008-07-31
申请号：PCT/KR2006004432
申请日：2006-10-27
申请人： KOREA ELECTRONICS TELECOMM , LEE SEUNG-JOON , OH JONG-EE , LEE YU-RO , KWON DONG-SEUNG
发明人： LEE SEUNG-JOON , OH JONG-EE , LEE YU-RO , KWON DONG-SEUNG
IPC分类号： H04B7/06 , H04L1/06
CPC分类号： H04B7/0671 , H04L1/0625
摘要： An apparatus for transmitting signals with multiple antennas is disclosed. The multiple antenna transmission apparatus performs space-time encoding or space-frequency encoding, and cyclically delays the encoded symbol with a plurality of delay-values to generate a plurality of delayed symbols. The multiple antenna transmission apparatus transmits the plurality of delayed symbols to the channel through a plurality of antennas. By changing the number of space areas for encoding and the number of delay-values for delaying, the number of antennas for the multiple antenna transmission apparatus is easily expanded.
摘要翻译：公开了一种用多个天线发射信号的装置。多天线发送装置执行空时编码或空间频率编码，并且以多个延迟值循环地延迟编码符号，以生成多个延迟符号。多天线发送装置通过多个天线将多个延迟符号发送到信道。通过改变用于编码的空间区域的数量和用于延迟的延迟值的数量，多天线发送装置的天线数量容易扩大。

8. 发明申请

WO2007066869A3 TRANSMITTING APPARATUS USING SPREAD-SPECTRUM TRANSMISSION METHOD 审中-公开
标题翻译：使用传播频谱传输方法的发射装置
公开(公告)号：WO2007066869A3
公开(公告)日：2008-08-07
申请号：PCT/KR2006002915
申请日：2006-07-25
申请人： KOREA ELECTRONICS TELECOMM , SONG YOUNG-SEOG , KWON DONG-SEUNG , OH JONG-EE
发明人： SONG YOUNG-SEOG , KWON DONG-SEUNG , OH JONG-EE
IPC分类号： H04B1/707 , H04J13/10
CPC分类号： H04L27/2627 , H04B1/707 , H04B2201/70703 , H04J13/10 , H04L5/0021 , H04L25/03343
摘要： The present invention relates to a transmitting apparatus using a spread-spectrum transmission scheme. The transmitting apparatus includes a precoder for precoding a data signal by performing a product operation between a first matrix and a diagonal matrix. The precoding outputs a signal responding to the input data by performing a product operation between the first matrix and the diagonal matrix. Such a transmitting apparatus obtains a maximum diversity gain.
摘要翻译：本发明涉及使用扩频传输方案的发送装置。发送装置包括预编码器，用于通过执行第一矩阵和对角矩阵之间的乘积运算来预编码数据信号。预编码通过在第一矩阵和对角矩阵之间执行乘积运算来输出响应于输入数据的信号。这样的发送装置获得最大分集增益。

9. 发明申请

WO2007066936A2 TRANSMITTING APPARATUS AND METHOD, AND RECEIVING APPARATUS AND METHOD IN MULTIPLE ANTENNA SYSTEM 审中-公开
标题翻译：发射装置和方法，并在多天线系统中接收装置和方法
公开(公告)号：WO2007066936A2
公开(公告)日：2007-06-14
申请号：PCT/KR2006005171
申请日：2006-12-04
申请人： KOREA ELECTRONICS TELECOMM , INDUSTRY ACADENUC COOPERATION , KWON DONG-SEUNG , SONG YOUNG-SEOG , LEE SEUNG-JOON , OH JONG-EE , LEE CHUNGYONG , SHIN MYEONG-CHEOL
发明人： KWON DONG-SEUNG , SONG YOUNG-SEOG , LEE SEUNG-JOON , OH JONG-EE , LEE CHUNGYONG , SHIN MYEONG-CHEOL
IPC分类号： H04B7/02 , H04B7/04 , H04B7/06 , H04J99/00
CPC分类号： H04B7/0639 , H04L1/0003 , H04L1/0006
摘要： Respective codewords of quantization codebooks corresponding to a number of data streams are selected based on channel information estimated by a received training symbol. A stream mode is selected among stream modes to determine a modulation method applied to each data stream. The data stream is detected by using the codeword corresponding to the quantization codebook of the data stream corresponding to the selected stream mode as a precode matrix, and the detected data stream is modulated. In this case, a receiving apparatus performs a feedback operation so that indexes of the selected stream mode and the codeword used as the precode matrix may be transmitted to the transmitting apparatus. The transmitting apparatus selects the number of transmitted data streams and the modulation method based on the transmitted index of feedback streams by the feedback operation.
摘要翻译：基于由接收到的训练符号估计的信道信息来选择与多个数据流对应的量化码本的各个码字。在流模式中选择流模式以确定应用于每个数据流的调制方法。通过使用与对应于所选流模式的数据流的量化码本相对应的码字作为预编码矩阵来检测数据流，并且检测的数据流被调制。在这种情况下，接收装置执行反馈操作，使得所选流模式的索引和用作预编码矩阵的码字可以被发送到发送装置。发送装置通过反馈操作基于所发送的反馈流索引来选择发送数据流的数量和调制方法。

10. 发明申请

WO2007066935A3 TRANSMITTING APPARATUS FOR TRANSMITTING IN A MULTI-CARRIER SYSTEM USING MULTIPLE ANTENNAS AND RECEIVING APPARATUS IN THE SAME SYSTEM 审中-公开
标题翻译：用于在多个载波系统中传输的发射装置，使用多个天线和在相同系统中接收装置
公开(公告)号：WO2007066935A3
公开(公告)日：2008-09-12
申请号：PCT/KR2006005168
申请日：2006-12-04
申请人： KOREA ELECTRONICS TELECOMM , OH JONG-EE , KWON DONG-SEUNG
发明人： OH JONG-EE , KWON DONG-SEUNG
IPC分类号： H04L1/06 , H04L25/06 , H04L27/26
CPC分类号： H04L1/0668 , H04L1/0625 , H04L1/0631 , H04L25/067 , H04L27/2647 , H04L2025/03458
摘要： A transmitting apparatus and receiving apparatus of a multi-carrier system using multiple antennas is proposed. An LCF encoder (202) of the transmitting apparatus performs a liner precoding to input signals to be transmitted to a receiving apparatus using a liner complex matrix considering the number of multiple antennas and the number of subcarriers, and a subcarrier allocator (203) respectively allocates a subcarrier to the signals liner-precoded by the LCF encoder. A transmitter (205) respectively transmits the signals having a subcarrier allocated by the subcarrier allocator through the multiple antennas externally. A subcarrier de-allocator (208) of a receiving apparatus extracts a liner-precoded signal by de-allocating a subcarrier allocated to the received signal. An LCF decoder (209) outputs a bit reliability of the received signal to the liner-precoded signal extracted from the subcarrier de-allocator considering the number m of multiple antennas and the number n of subcarriers. A performance may be improved by using space diversity due to multiple antennas and a frequency diversity due to the OFDMA system and a complexity may be reduced and a hard decision value of a performance similar to the maximum likehood detection may be obtained by using a lattice reduction and a 2-branch Chase decoder.
摘要翻译：提出了使用多个天线的多载波系统的发送装置和接收装置。发送装置的LCF编码器（202）使用考虑多个天线的数量和子载波的数量的线性复数矩阵来执行线路预编码以输入要发送到接收装置的信号，并且子载波分配器（203）分别分配到由LCF编码器预编码的信号的子载波。发射机（205）通过外部的多个天线分别发送具有由子载波分配器分配的子载波的信号。接收装置的子载波去分配器（208）通过对分配给接收信号的子载波进行去分配来提取线路预编码信号。考虑到多个天线的数量m和子载波数n，LCF解码器（209）将接收到的信号的比特可靠性输出到从子载波去分配器提取的线路预编码信号。通过使用由于多个天线的空间分集和由于OFDMA系统导致的频率分集，可以提高性能，并且可以减少复杂度，并且可以通过使用晶格减少来获得类似于最大像素检测的性能的硬判决值和2分支Chase解码器。

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