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41. 发明授权

US07433419B2 ICI cancellation method for an OFDM system 有权
标题翻译： OFDM系统的ICI消除方法
公开(公告)号：US07433419B2
公开(公告)日：2008-10-07
申请号：US10973372
申请日：2004-10-26
申请人： Jae-Yeun Yun , Yong-Hoon Lee , Eung-Sun Kim , Jong-Hyeuk Lee , Ho-Jin Kim , Chan-Soo Hwang , Seung-Hoon Nam
发明人： Jae-Yeun Yun , Yong-Hoon Lee , Eung-Sun Kim , Jong-Hyeuk Lee , Ho-Jin Kim , Chan-Soo Hwang , Seung-Hoon Nam
IPC分类号： H04K1/02 , H04L25/03 , H04L25/49 , H03K9/00 , H04L27/00
CPC分类号： H04L27/2647 , H04L25/0228
摘要： In the ICI cancellation method for OFDM communication system, a receiver performs channel estimation using pilot subcarriers included in transmission signals transmitted from at least one transmitter. The transmitter generates the transmission signal in which pilot subcarriers and data subcarriers are regularly arranged, performs preceding on the transmission signal, modulates the pre-coded transmission signal into an OFDM symbol, and transmits the OFDM symbol. The receiver receives the OFDM symbol; demodulates the OFDM symbol, detects the pilot subcarriers from a demodulated signal, estimates channels using the pilot subcarriers, and restores the transmission signal using the estimated channels.
摘要翻译：在OFDM通信系统的ICI取消方法中，接收机使用从至少一个发射机发送的发送信号中包含的导频子载波来执行信道估计。发射机产生导频子载波和数据子载波规则排列的传输信号，在传输信号之前执行，将预编码的传输信号调制为OFDM符号，并发送OFDM符号。接收机接收OFDM符号; 解调OFDM符号，从解调信号中检测导频子载波，使用导频子载波估计信道，并使用所估计的信道来恢复发送信号。

42. 发明申请

US20080170512A1 METHOD AND APPARATUS FOR CONTROLLING POWER IN A DECODE-AND-FORWARD RELAY SYSTEM 有权
标题翻译：用于控制转向和继续继电器系统中的电力的方法和装置
公开(公告)号：US20080170512A1
公开(公告)日：2008-07-17
申请号：US11859925
申请日：2007-09-24
申请人： Duck Dong HWANG , Eung Sun KIM , Young-Doo KIM , Chang Wook AHN
发明人： Duck Dong HWANG , Eung Sun KIM , Young-Doo KIM , Chang Wook AHN
IPC分类号： H04L12/28
CPC分类号： H04W52/46 , H04B7/022 , H04B7/026 , H04W52/248
摘要： A method and apparatus for controlling power in a decode-and-forward (DF) relay system is provided. The method of controlling power in a DF relay system includes: acquiring first channel information of a first link between a source node and a destination node, second channel information of a second link between the source node and a relay node, and third channel information of a third link between the relay node and the destination node, by using a pilot signal; determining a power level of the source node from the acquired first through third channel information; and feeding back the determined power level to the source node and the relay node.
摘要翻译：提供了一种用于在解码 - 转发（DF）中继系统中控制功率的方法和装置。控制DF中继系统功率的方法包括：获取源节点与目的节点之间的第一链路的第一信道信息，源节点与中继节点之间的第二链路的第二信道信息，以及第通过使用导频信号在中继节点和目的地节点之间的第三链路; 从所获取的第一到第三信道信息确定源节点的功率电平; 并将确定的功率电平反馈到源节点和中继节点。

43. 发明申请

US20080137764A1 METHOD FOR ASSIGNING CHANNELS BASED ON SPATIAL DIVISION MULTIPLEXING IN AN ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING SYSTEM WITH MULTIPLE ANTENNAS 审中-公开
标题翻译：在具有多个天线的正交频分复用系统中基于空间分割多路复用的信道分配方法
公开(公告)号：US20080137764A1
公开(公告)日：2008-06-12
申请号：US11945141
申请日：2007-11-26
申请人： Eung-Sun KIM , Jong-Hyeuk LEE , Jae-Hak CHUNG , Ho-Jin KIM , Joo-Hwan CHUN , Kyung-Chun LEE , Il-Han KIM
发明人： Eung-Sun KIM , Jong-Hyeuk LEE , Jae-Hak CHUNG , Ho-Jin KIM , Joo-Hwan CHUN , Kyung-Chun LEE , Il-Han KIM
IPC分类号： H04K1/10
CPC分类号： H04L1/06 , H04L5/023 , H04L27/2601
摘要： A method for assigning a single frequency sub-channel to a plurality of MSs (Mobile Stations) in an OFDM (Orthogonal Frequency Division Multiplexing) system utilizing SDM (Spatial Division Multiplexing) with multiple transmit/receive antennas. In the method, a BS (Base Station) can effectively assign a pilot channel to estimate a downlink channel. The BS divides the single frequency sub-channel into a plurality of spatial channels, and sequentially assigns the plurality of spatial channels to the MSs having the maximum communication capacity, thereby transmitting signals of the MSs through the single frequency sub-channel.
摘要翻译：一种利用具有多个发射/接收天线的SDM（空分多路复用）的OFDM（正交频分复用）系统中的多个MS（移动站）分配单个频率子信道的方法。在该方法中，BS（基站）可以有效地分配导频信道来估计下行链路信道。 BS将单频子信道划分为多个空间信道，并且将多个空间信道顺序地分配给具有最大通信容量的MS，从而通过单个频率子信道发送MS的信号。

44. 发明申请

US20080080612A1 FAST ADAPTIVE TIME DOMAIN HYBRID EQUALIZER FOR TIME REVERSAL-SPACE TIME BLOCK CODE SYSTEM 有权
标题翻译：快速自适应时域混合均衡器，用于时间反转时空编码系统
公开(公告)号：US20080080612A1
公开(公告)日：2008-04-03
申请号：US11851760
申请日：2007-09-07
申请人： Lee M. Garth , Eung Sun Kim
发明人： Lee M. Garth , Eung Sun Kim
IPC分类号： H03H7/40 , H03K5/159
CPC分类号： H04L25/03057 , H04L1/0631 , H04L1/0643 , H04L2025/03426 , H04L2025/03617
摘要： A fast adaptive time domain equalizer for a Time Reversal-Space Time Block Code (TR-STBC) system is provided. More particularly, a reduced-complexity hybrid Decision Feedback Equalizer (DFE) configuration for the TR-STBC system, and a Least Mean Square (LMS), a normalized LMS (NLMS), and a Recursive Least Square (RLS)-based adaptive algorithms for the hybrid DFE are provided.
摘要翻译：提供了一种用于时间反转空间时间块代码（TR-STBC）系统的快速自适应时域均衡器。更具体地，针对TR-STBC系统的降低复杂度的混合决策反馈均衡器（DFE）配置，以及最小均方（LMS），归一化LMS（NLMS）和基于递归最小二乘法（RLS）的自适应算法为混合DFE提供。

45. 发明申请

US20080076349A1 Apparatus for controlling power of relay in amplify-forward relay system and method using the same 有权
标题翻译：用于控制放大前馈继电器系统中继电器功率的装置及使用其的方法
公开(公告)号：US20080076349A1
公开(公告)日：2008-03-27
申请号：US11716695
申请日：2007-03-12
申请人： Duck Dong Hwang , Eung Sun Kim , Young-Doo Kim , Chang Wook Ahn
发明人： Duck Dong Hwang , Eung Sun Kim , Young-Doo Kim , Chang Wook Ahn
IPC分类号： H04B7/14
CPC分类号： H04B7/15535 , H04B7/043 , H04W52/46
摘要： A method and apparatus for controlling a power of a relay are provided. The apparatus includes: a signal receiver which receives signals which are transmitted to a plurality of receiving antennas directly from a source or via at least one relay; a channel information acquirement unit which acquires channel information between the source and the at least one relay, and acquires channel information between the at least one relay and the plurality of receiving antennas; a power control signal generation unit which generates a power control signal, based on the acquired channel information and a maximum SNR; and a relay power control unit which transmits the generated power control signal to the relay and thereby controls a transmit signal power with respect to the at least one relay.
摘要翻译：提供一种用于控制继电器的功率的方法和装置。该装置包括：信号接收器，其接收从源或经由至少一个继电器直接发送到多个接收天线的信号; 信道信息获取单元，其获取所述源与所述至少一个中继之间的信道信息，并获取所述至少一个中继与所述多个接收天线之间的信道信息; 功率控制信号生成单元，其基于所获取的信道信息和最大SNR生成功率控制信号; 以及继电器功率控制单元，其向所述继电器发送所生成的功率控制信号，从而控制相对于所述至少一个继电器的发送信号功率。

46. 发明申请

US20070230510A1 System and method for synchronizing base stations in communication system 审中-公开
标题翻译：通信系统中基站同步的系统和方法
公开(公告)号：US20070230510A1
公开(公告)日：2007-10-04
申请号：US11701986
申请日：2007-02-02
申请人： Cheol-Woo You , Sang-Hoon Lee , Eung-Sun Kim , Jong-Hyung Kwun , Chi-Hyun Park , Sung-Ho Jeon , Chang-Wook Ahn , Sung-Hyun Cho
发明人： Cheol-Woo You , Sang-Hoon Lee , Eung-Sun Kim , Jong-Hyung Kwun , Chi-Hyun Park , Sung-Ho Jeon , Chang-Wook Ahn , Sung-Hyun Cho
IPC分类号： H04J3/06
CPC分类号： H04B7/269 , H04J3/0682
摘要： Disclosed is a method and system for synchronizing base stations in a communication system. A mobile station receives reference base station information and base station group information, selects a synchronization correction-requiring base station from among a plurality of base stations included in a base station group corresponding to the base station group information, detects a timing offset based on reference signals received from the reference base station and synchronization correction-requiring base station, and transmits the timing offset to the synchronization correction-requiring base station so as to enable the synchronization correction-requiring base station to correct synchronization, thereby synchronizing the base stations in consideration of a real channel environment.
摘要翻译：公开了一种在通信系统中同步基站的方法和系统。移动站接收参考基站信息和基站组信息，从包含在与基站组信息对应的基站组中的多个基站中选择需要同步校正的基站，基于参考信号检测定时偏移从参考基站和同步校正要求基站接收的信号，并将定时偏移发送到需要同步校正的基站，以使得同步校正要求基站能够校正同步，从而使基站同步的真正的渠道环境。

47. 发明申请

US20070060091A1 Method of recognizing frequency bandwidth of base station in a mobile communication system with frequency bandwidth scalability 审中-公开
标题翻译：在具有频带宽度的移动通信系统中识别基站频率带宽的方法
公开(公告)号：US20070060091A1
公开(公告)日：2007-03-15
申请号：US11510042
申请日：2006-08-25
申请人： Eung-Sun Kim , Cheol-Woo You , Yung-Soo Kim , Jong-Hyung Kwun
发明人： Eung-Sun Kim , Cheol-Woo You , Yung-Soo Kim , Jong-Hyung Kwun
IPC分类号： H04B1/06 , H04Q7/20
CPC分类号： H04W48/16 , H04B7/2621 , H04W48/20
摘要： A method is provided for recognizing the frequency bandwidth of a base station in a mobile communication system with frequency bandwidth scalability where the transmission frequency bands of base stations and mobile stations having different frequency bandwidths are overlaid with one another. The base stations transmit to a mobile station first information, including information about their frequency bandwidths at the same frequency position over a minimum frequency bandwidth with the same center frequency. The mobile station recognizes the presence of the base stations by comparing the first information from the base stations and detects the frequency bandwidth information in the first information.
摘要翻译：提供了一种用于在具有频率带宽可伸缩性的移动通信系统中识别基站的频率带宽的方法，其中具有不同频带宽度的基站和移动台的传输频带彼此重叠。基站在具有相同中心频率的最小频率带宽上向移动台发送包括在相同频率位置上的频率带宽的信息的第一信息。移动台通过比较来自基站的第一信息来识别基站的存在，并检测第一信息中的频带宽度信息。

48. 发明申请

US20060215541A1 Transceiving apparatus and method using space-frequency block-coded single-carrier frequency domain equalization 有权
标题翻译：收发装置和方法采用空频块编码的单载波频域均衡
公开(公告)号：US20060215541A1
公开(公告)日：2006-09-28
申请号：US11387415
申请日：2006-03-23
申请人： Jong-Hyung Kwun , Eung-Sun Kim , Jong-Hyeuk Lee , Gi-Hong Im , Hui-Chul Won , Jin-Ho Jang
发明人： Jong-Hyung Kwun , Eung-Sun Kim , Jong-Hyeuk Lee , Gi-Hong Im , Hui-Chul Won , Jin-Ho Jang
IPC分类号： H04J11/00
CPC分类号： H04L1/0606 , H04B7/06 , H04L25/03159
摘要： Disclosed is a transceiving apparatus and method in which a space frequency block coding (SFBC) technique is applied to the SC-FDE technique. The transceiving method encodes an input signal into frequency-domain blocks so as to output at least two signal blocks in parallel to each other, inserts a cyclic prefix (CP) into the output signal blocks, and outputs the signal blocks through the same sub-channel by means of corresponding antenna.
摘要翻译：公开了一种将空间频率块编码（SFBC）技术应用于SC-FDE技术的收发装置和方法。收发方法将输入信号编码成频域块，以便彼此并行地输出至少两个信号块，将循环前缀（CP）插入到输出信号块中，并通过相同子帧输出信号块，通过相应的天线。

49. 发明申请

US20060203777A1 Apparatus and method for allocating user in a multiple antenna mobile communication system supporting multi-user diversity 有权
公开(公告)号：US20060203777A1
公开(公告)日：2006-09-14
申请号：US11374735
申请日：2006-03-14
申请人： Eung-sun Kim , Jee-Sang Ham , Jong-Hyeuk Lee , Chung-Yong Lee , Sei-Joon Shim , Kyeong-Yeon Kim
发明人： Eung-sun Kim , Jee-Sang Ham , Jong-Hyeuk Lee , Chung-Yong Lee , Sei-Joon Shim , Kyeong-Yeon Kim
IPC分类号： H04Q7/00 , H04L1/02 , H04B1/02 , H04B17/02
CPC分类号： H04L1/0675 , H04L1/0003 , H04L1/0656
摘要： A user allocating apparatus and method in a multiple antenna mobile communication system supporting multi-user diversity is provided. Each user calculates effective Signal-to-Interference Noise Ratios (SINRs) and bit loading over every possible detection order and selects a detection order maximizing the number of channels with a minimum product of the minimum symbol distance of a modulation scheme and an effective SINR, thereby minimizing an average error probability. A base station receives detection orders from users and selects a user with a maximum detection order value. The base station then transmits data to the selected user using modulation schemes determined by the user for the transmit antennas.

50. 发明申请

US20060153144A1 Pilot-based channel estimation method for MC-CDMA system 审中-公开
标题翻译：用于MC-CDMA系统的基于导频的信道估计方法
公开(公告)号：US20060153144A1
公开(公告)日：2006-07-13
申请号：US11328841
申请日：2006-01-10
申请人： Jong-Hyung Kwun , Eung-Sun Kim , Jong-Hyeuk Lee , Dae-Sik Hong , Young-Bo Cho
发明人： Jong-Hyung Kwun , Eung-Sun Kim , Jong-Hyeuk Lee , Dae-Sik Hong , Young-Bo Cho
IPC分类号： H04B7/216
CPC分类号： H04L25/0226 , H04L5/023 , H04L27/261
摘要： Disclosed is a method for estimating a channel using a pilot signal in a wireless communication system based on multi-carrier multiple access. A transmission side generates a pilot symbol correlated with spread data symbols which is included in a spread symbol generated through a band spreading, inserts the pilot symbol into the spread symbol, and transmits the spread symbol. A reception side receives the spread symbol and detects the pilot signal by using the spread data symbols and pilot symbol included in the spread symbol. Therefore, it is possible to simultaneously obtain both the position optimization of a pilot symbol, according to a channel state such as a correlation band or correlation time (which is an advantage over the pilot-tone-based channel estimation method), and a noise reduction effect by the averaging procedure (which is an advantage over the pilot-channel-based channel estimation method), so that the accuracy of channel estimation can be improved.
摘要翻译：公开了一种基于多载波多路访问在无线通信系统中使用导频信号来估计信道的方法。传输侧产生与通过频带扩展生成的扩展符号中包含的扩展数据符号相关的导频符号，将导频符号插入到扩展符号中，并发送扩展符号。接收侧接收扩展符号，并通过使用扩展符号中包含的扩展数据符号和导频符号来检测导频信号。因此，可以根据诸如相关频带或相关时间（相对于基于导频音调的信道估计方法来说是优点）的信道状态同时获得导频符号的位置优化，通过平均处理（相对于基于导频信道的信道估计方法来说是优点）的缩小效果，可以提高信道估计的精度。

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