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公开(公告)号：KR1020110068741A
公开(公告)日：2011-06-22
申请号：KR1020100012447
申请日：2010-02-10
Applicant: 한국전자통신연구원 , 연세대학교 산학협력단
CPC classification number: H04L1/0048 , H04L1/1812
Abstract: PURPOSE: A method and device for determining whether to repeat a signal demodulation procedure are provided to determine whether to repeat a signal demodulation procedure in a receiver using a CRC(Cyclic Redundacy Check) result value. CONSTITUTION: An MIMO detector(110) outputs a soft decision log-likelihood ratio value. A first adder(120) outputs a first soft decision log-likelihood ratio value. A deinterleaver(130) deinterleaves the soft decision log-likelihood ratio value. A decoder(140) simultaneously outputs a soft decision value and a hard decision value. A first CRC checking unit(150) checks FEC CRC(Forward Error Correction Cyclical Redundancy Check). A burst assembly unit(160) outputs a received signal of a burst unit. A second CRC checking unit(170) checks the successful CRC of a data burst. An interleaver(180) interleaves a third soft decision log-likelihood ratio value outputted from a second adder(125).
Abstract translation: 目的：提供用于确定是否重复信号解调过程的方法和装置，以确定是否使用CRC（循环冗余校验）结果值在接收机中重复信号解调过程。 构成：MIMO检测器（110）输出软判决对数似然比值。 第一加法器（120）输出第一软判决对数似然比值。 解交织器（130）对软判决对数似然比值进行解交织。 解码器（140）同时输出软判决值和硬决策值。 第一CRC校验单元（150）检查FEC CRC（前向纠错循环冗余校验）。 突发组合单元（160）输出突发单元的接收信号。 第二CRC校验单元（170）检查数据突发的成功CRC。 交织器（180）交织从第二加法器（125）输出的第三软判决对数似然比值。
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公开(公告)号：KR1020110068052A
公开(公告)日：2011-06-22
申请号：KR1020090124876
申请日：2009-12-15
Applicant: 한국전자통신연구원
CPC classification number: H04W52/245 , H04W16/08 , H04W16/10 , H04W52/143 , H04W52/242 , H04W52/386
Abstract: PURPOSE: A transmission power control method in a cellular system is provided to variably operate a cell area in a cellular system in which the location of a base station is changed. CONSTITUTION: A base station receives a reference signal from one or more base stations(S200). The base station presumes a radio wave environment between a peripheral base station and the base station by using reception power of a reference signal(S210). The base station decides the transmission power based on the radio wave environment(S220). The base station controls the cell region of the base station(S230).
Abstract translation: 目的：提供一种蜂窝系统中的发射功率控制方法，用于可变地操作基站的位置改变的蜂窝系统中的小区区域。 构成：基站从一个或多个基站接收参考信号（S200）。 基站通过使用参考信号的接收功率来假设在外围基站与基站之间的无线电波环境（S210）。 基站基于无线电波环境来决定发送功率（S220）。 基站控制基站的小区区域（S230）。
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公开(公告)号：KR1020100070761A
公开(公告)日：2010-06-28
申请号：KR1020080129452
申请日：2008-12-18
Applicant: 한국전자통신연구원 , 인하대학교 산학협력단
CPC classification number: H04W88/04 , H04W16/26 , H04W72/085
Abstract: PURPOSE: A data transmission method and a terminal therefor of a terminal-relay station system base data communications method of the terminal - relay center system base and terminal therefor are provided to continuously supply a communication in order not to connect of a base station and with a terminal. CONSTITUTION: A channel quality information measuring unit(220) measures a channel quality information of a neighboring terminal based on 'a signal transmitted to a base station' received in a signal receiving unit. A signal transmitting unit(230) includes a channel quality information of the neighboring terminal measured in the channel quality information measuring unit to an uplink slot. The signal transmitting unit transmits the uplink slot to the base station. A controller(240) changes a mode in a terminal mode into a relay station when the signal receiving unit receives a terminal-relay station signal.
Abstract translation: 目的：提供终端 - 中继中心系统基站和终端的终端中继站系统基础数据通信方法的数据传输方法及其终端，以连续提供通信，以便不连接基站和与 一个终端。 构成：信道质量信息测量单元（220）基于在信号接收单元中接收到的“发送给基站的信号”来测量相邻终端的信道质量信息。 信号发送单元（230）包括在信道质量信息测量单元中测量的相邻终端的信道质量信息到上行链路时隙。 信号发送单元向基站发送上行链路时隙。 当信号接收单元接收终端中继站信号时，控制器（240）将终端模式中的模式改变为中继站。
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公开(公告)号：KR1020100070760A
公开(公告)日：2010-06-28
申请号：KR1020080129451
申请日：2008-12-18
Applicant: 한국전자통신연구원
CPC classification number: H04B7/2606 , H04B7/15528
Abstract: PURPOSE: A method for selecting transmission-reception antenna relay is provided to supply in order to reduce a feedback overhead created from a process of the feedback. CONSTITUTION: An antenna selection vector generator(320) produces 'a coefficient vector for selecting one of a plurality of transmission antennas' using a channel value. An antenna selection multiplier(330) multiplies the coefficient vector to a downlink signal especially received a plurality of receiving antennas. An adder(340) outputs one signal with adding the signals which the coefficient vector is multiplied. An amplifier outputs the outputted one signal with amplifying in order to transmit to a terminal belonging to a relay domain of a repeater.
Abstract translation: 目的：提供一种用于选择发送接收天线中继的方法，以便减少从反馈过程产生的反馈开销。 构成：天线选择矢量发生器（320）使用信道值产生用于选择多个发射天线之一的系数矢量。 天线选择乘法器（330）将系数向量与特别接收的多个接收天线的下行链路信号相乘。 加法器（340）输出一个与系数矢量相乘的信号相加的信号。 放大器通过放大器输出输出的一个信号，以便发送到属于中继器的中继域的终端。
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公开(公告)号：KR1020100064318A
公开(公告)日：2010-06-14
申请号：KR1020090081445
申请日：2009-08-31
CPC classification number: H04B7/0417 , H04B7/0626 , H04B7/0632 , H04W52/42 , H04B7/0426 , H04B7/0456
Abstract: PURPOSE: A device and a method for transmitting multi antenna system are provided to control a power assigned to a user data in use of BTHP(Block Tomlinson-Harashima Precoder) and ML(Maximum Likelihood) receiving method in a MIMO(Multi Input Multi Output), thereby improving the average error function of a system. CONSTITUTION: A linear encoder(120) outputs transmission data by user through non-linear type of linear encoder. A power allocation control unit(130) assigns power data by user and data of the linear encoder. A channel dividing filter(140) respectively multiplies a filter value to the data by a user. The power allocation control unit respectively assigns calculates power allocation variable to the data by a user.
Abstract translation: 目的：提供一种用于发送多天线系统的装置和方法，用于在MIMO（多输入多输出）中使用BTHP（块Tomlinson-Harashima Precoder）和ML（最大似然）接收方法来控制分配给用户数据的功率 ），从而提高系统的平均误差函数。 构成：线性编码器（120）通过非线性类型的线性编码器输出用户的传输数据。 功率分配控制单元（130）根据用户分配功率数据和线性编码器的数据。 信道分割滤波器（140）分别由用户将滤波器值与数据相乘。 功率分配控制单元分别由用户分配给该数据的功率分配变量。
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Patent Agency Ranking
公开(公告)号：KR1020100021378A
公开(公告)日：2010-02-24
申请号：KR1020090075136
申请日：2009-08-14
Applicant: 한국전자통신연구원 , 경희대학교 산학협력단
CPC classification number: H04B7/0617 , H04B7/0417 , H04B7/0639 , Y02D70/1262 , Y02D70/444
Abstract: PURPOSE: A method for generating bean forming vector considering adjacent cell interference is provided. CONSTITUTION: A method for generating bean forming vector comprises: a step of receiving information of first and second precoding matrixes from a serving base station(200); and a step of generating the beam forming vactor by linearly binding the first and second precoding matrixes. The first precoding matrix is a precoding matrix which maximizes transfer power from a terminal to serving base station. The second precoding matrix is a precoding matrix which minimizes interference power from the terminal to adjacent base station.
Abstract translation: 目的：提供一种考虑邻接小区干扰的生成bean形成向量的方法。 构成：用于生成bean形成向量的方法包括：从服务基站（200）接收第一和第二预编码矩阵的信息的步骤; 以及通过线性地结合第一和第二预编码矩阵来生成波束形成引擎的步骤。 第一预编码矩阵是使从终端到服务基站的传送功率最大化的预编码矩阵。 第二预编码矩阵是使从终端到相邻基站的干扰功率最小化的预编码矩阵。
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公开(公告)号：KR100930717B1
公开(公告)日：2009-12-09
申请号：KR1020070093003
申请日：2007-09-13
CPC classification number: H04L25/0224 , H04B7/0452 , H04B7/0626 , H04L5/0007 , H04L5/0048 , H04L25/0204 , H04L43/50
Abstract: 본 발명은 무선 통신 시스템에서 OFDM(Orthogonal Frequency Division Multiplexing) 임펄스(Impulse)를 활용하여 송신 안테나 별 채널을 추정하도록 한 무선 통신 시스템의 채널 추정 및 피드백 방법에 관한 것이다. 본 발명은 무선 통신 시스템에서 채널을 추정하는 방법에 있어서, 기지국은 송신 안테나 별로 특정 파형의 훈련 신호를 생성시켜 단말들에게 전송하며, 단말들은 기지국으로부터 수신받은 훈련 신호를 이용하여 기지국의 송신 안테나 별 다운링크 채널 임펄스 응답을 획득하며, 단말은 획득한 채널 임펄스 응답을 이용하여 기지국의 송신 안테나 별 다운링크 채널 특성을 획득하며, 단말이 획득한 다운링크 채널 특성 정보를 기지국으로 피드백하며, 기지국이 단말로부터 수신받은 다운링크 채널 정보를 FFT(Fast Fourier Transform)하여 전체 CSI(Channel Status Information)를 간접적으로 획득하도록 하는 것을 특징으로 한다. 본 발명에 의해 단말의 채널 추정 성능을 향상시킬 수 있으며, MIMO 적용 및 스케쥴링에 활용할 수 있고 다운링크 채널 피드백 전송에 요구되는 업링크 오버헤드를 감소시킬 수 있다.
MU-MIMO, 다운링크, CSI, 피드백, 채널 임펄스 응답Abstract translation: 公开了一种用于使用正交频分复用（OFDM）脉冲信号来估计每个发射天线的信道的无线通信系统中的信道估计和反馈的方法。 一种用于无线通信系统中的信道估计的方法，包括：使基站为每个发送天线生成具有特定波形的训练信号，并将生成的训练信号发送给终端; 使终端使用从基站发送的训练信号来获取针对基站的每个发送天线的下行链路信道脉冲响应; 使所述终端使用所获取的信道脉冲响应来获取所述基站的每个发送天线的下行链路信道特性; 使终端将获取的下行信道特征信息反馈给基站; 并且使得基站对从终端发送的下行链路信道信息执行快速傅立叶变换（FFT）以间接获取全信道状态信息（CSI）。
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公开(公告)号：KR1020090097101A
公开(公告)日：2009-09-15
申请号：KR1020090004301
申请日：2009-01-19
Applicant: 한국전자통신연구원
CPC classification number: H04L27/3433 , H03M13/25 , H03M13/258 , H03M13/356 , H04L1/006 , H04L1/0071
Abstract: An apparatus and a method for mapping a symbol are provided to symbol-map reliability of information bits and reliability of redundancy bits differently, thereby improving performance. A systematic encoder encodes transmission data(S410). An encoder outputs a plurality of information bits including added redundancy bits. A puncher punches an information bit and a redundancy bit(S420). The puncher punches only the redundancy bit except the information bit. An information interleaver interleaves the punched information bit. The redundancy interleaver interleaves a punched redundancy bit(S430). A symbol mapping device maps the interleaved information bit and the interleaved redundancy bit on symbols respectively(S440).
Abstract translation: 提供了用于映射符号的装置和方法，用于不同地对符号映射信息位的可靠性和冗余位的可靠性，从而提高性能。 系统编码器对发送数据进行编码（S410）。 编码器输出包括附加的冗余位的多个信息位。 打孔机冲击信息位和冗余位（S420）。 打孔机只打破除信息位之外的冗余位。 信息交织器交织穿孔信息位。 冗余交织器交织穿孔冗余位（S430）。 符号映射设备分别对交织的信息比特和交织的冗余比特进行映射（S440）。
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公开(公告)号：KR1020090079176A
公开(公告)日：2009-07-21
申请号：KR1020090003509
申请日：2009-01-15
CPC classification number: H04B7/024 , H04B7/0617 , H04B7/0626 , H04J11/0053 , H04B7/0413 , H04L1/0618
Abstract: A method of mitigating inter-cell interference is provided to mitigate the interference in the boundary of cell by transmitting data without cooperation between base stations or through the cooperation between base stations according to the location of a terminal and SINR. A method for mitigating the interference between cells in the base station is as following. A plurality of terminals is grouped to a plurality of groups(S270). A first data is transmitted without a cooperation of a neighboring base station in a first terminal which belongs to a first group among a plurality of groups. A second data is transmitted through a cooperation of a neighboring base station in a second terminal which belongs to a second group among a plurality of groups.
Abstract translation: 提供减轻小区间干扰的方法，通过在基站之间进行协作或通过基站与SINR的位置之间的协作来发送数据来减轻小区边界的干扰。 用于减轻基站中的小区之间的干扰的方法如下。 多个终端被分组成多个组（S270）。 在属于多个组中的第一组的第一终端中不发送相邻基站的协作来发送第一数据。 通过属于多个组中的第二组的第二终端中的相邻基站的协作来发送第二数据。
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公开(公告)号：KR1020090042508A
公开(公告)日：2009-04-30
申请号：KR1020070108305
申请日：2007-10-26
CPC classification number: H04L5/0007 , H04L5/0023 , H04L5/0048 , H04L25/0226 , H04L25/0232 , H04L27/2613
Abstract: A pilot design method, the recording medium and a transmission apparatus are provided to improve the channel estimation performance by using the existing structure of tile. An encoder encodes the data into the corresponding code rate(S210). A digital modulator modulates the data encoded into the digital modulation(S220). A sub channel allocation part assigns the subcarrier for transmitting data(S230). The sub channel allocation part assigns a part subcarrier of the tile for transmitting the pilot(S240). A reverse Furrier transform unit(IFFT) converts the data and produces the signal by a plurality of symbols(S250). A guard interval insertion unit inserts the guard interval of the time region between the plurality of symbols(S260). A transmission unit transmits the OFDMA signal including the plurality of symbols in which the guard interval is inserted to the radio channel through an antenna(S270).
Abstract translation: 提供了一种导频设计方法，记录介质和发送装置，以通过使用现有的瓦片结构来改善信道估计性能。 编码器将数据编码成相应的码率（S210）。 数字调制器调制编码为数字调制的数据（S220）。 子信道分配部分分配用于发送数据的子载波（S230）。 子信道分配部分分配用于发送导频的瓦片的子副载波（S240）。 反向傅立叶变换单元（IFFT）转换数据并通过多个符号产生信号（S250）。 保护间隔插入单元插入多个符号之间的时间区域的保护间隔（S260）。 传输单元通过天线发送包括其中保护间隔被插入无线电信道的多个符号的OFDMA信号（S270）。
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