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1.发明公开Apparatus and method for determining beamforming vector in a codebook-based beamforming system 有权设备和方法，用于在基于码本的波束形成系统中确定波束形成向量
公开(公告)号：EP1816758A3
公开(公告)日：2013-05-22
申请号：EP07002340.3
申请日：2007-02-02
发明人： Lee, Jong-Hyeuk , Cho, Myeon-Kyun , Nam, Seung-Hoon , Yun, Jae-Yeun , Lee, Yong-Hoon , Chung, Sae-Young , Choi, Jihoon
CPC分类号： H04B7/066 , H04B7/0417 , H04B7/0626 , H04B7/0639 , H04L25/0204 , H04L25/022 , H04L27/2601
摘要： An apparatus and method for determining a beamforming vector in a codebook-based transmission beamforming system are provided. In a feedback method for a receiver in a codebook-based transmission beamforming system, forthcoming channel values for a forthcoming period are generated using M present and previous channel estimates. Effective channel gains for all transmission beamforming vectors included in a codebook are calculated using the forthcoming channel values. A codebook index corresponding to the maximum effective channel gains is fed back to a transmitter.
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2.发明授权Apparatus and method for determining beamforming vector in a codebook-based beamforming system 有权用于在基于码本的波束成形系统中确定波束成形向量的设备和方法
公开(公告)号：EP1816758B1
公开(公告)日：2017-12-13
申请号：EP07002340.3
申请日：2007-02-02
发明人： Lee, Jong-Hyeuk , Cho, Myeon-Kyun , Nam, Seung-Hoon , Yun, Jae-Yeun , Lee, Yong-Hoon , Chung, Sae-Young , Choi, Jihoon
CPC分类号： H04B7/066 , H04B7/0417 , H04B7/0626 , H04B7/0639 , H04L25/0204 , H04L25/022 , H04L27/2601
摘要： An apparatus and method for determining a beamforming vector in a codebook-based transmission beamforming system are provided. In a feedback method for a receiver in a codebook-based transmission beamforming system, forthcoming channel values for a forthcoming period are generated using M present and previous channel estimates. Effective channel gains for all transmission beamforming vectors included in a codebook are calculated using the forthcoming channel values. A codebook index corresponding to the maximum effective channel gains is fed back to a transmitter.
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3.发明授权Dynamic subchannel and bit allocation in a multiuser-mimo/OFDMA system 有权在多用户MIMO-OFDMA系统比特和子通道的动态分配
公开(公告)号：EP1598975B1
公开(公告)日：2014-03-12
申请号：EP05010520.4
申请日：2005-05-13
CPC分类号： H04L1/06 , H04L1/0003 , H04L5/0007 , H04L5/0023 , H04L5/0026 , H04L5/0037 , H04L5/0046 , H04L5/006 , H04L5/0064 , H04L5/0096
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4.发明公开Dynamic subchannel and bit allocation in a multiuser-mimo/OFDMA system 有权在多用户MIMO-OFDMA系统比特和子通道的动态分配
公开(公告)号：EP1598975A3
公开(公告)日：2012-04-04
申请号：EP05010520.4
申请日：2005-05-13
CPC分类号： H04L1/06 , H04L1/0003 , H04L5/0007 , H04L5/0023 , H04L5/0026 , H04L5/0037 , H04L5/0046 , H04L5/006 , H04L5/0064 , H04L5/0096
摘要： In a multiuser-MIMO/OFDMA system feedback information is received from terminals. A channel gain and a transmission rate for each user are determined using the feedback information. An average channel gain for each user is computed according to the channel gain. The average number of bits for each user is determined according to the average channel gain. The number of subchannels for each user is computed according to the average number of bits for each user. One or more subchannels is allocated to each user according to the number of subchannels for each user. A modulation scheme for each of the subchannel is determined. The resource allocation method adaptively allocates subchannels and bits according to channel environment, thereby considerably improving frequency use efficiency as well as a power gain.
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5.发明公开Dynamic subchannel and bit allocation in a multiuser-mimo/OFDMA system 有权Meincentzer-MIMO-OFDMA系统中的Dynamische Zuweisung von Bits undUnterkanälen
公开(公告)号：EP1598975A2
公开(公告)日：2005-11-23
申请号：EP05010520.4
申请日：2005-05-13
CPC分类号： H04L1/06 , H04L1/0003 , H04L5/0007 , H04L5/0023 , H04L5/0026 , H04L5/0037 , H04L5/0046 , H04L5/006 , H04L5/0064 , H04L5/0096
摘要： In a multiuser-MIMO/OFDMA system feedback information is received from terminals. A channel gain and a transmission rate for each user are determined using the feedback information. An average channel gain for each user is computed according to the channel gain. The average number of bits for each user is determined according to the average channel gain. The number of subchannels for each user is computed according to the average number of bits for each user. One or more subchannels is allocated to each user according to the number of subchannels for each user. A modulation scheme for each of the subchannel is determined. The resource allocation method adaptively allocates subchannels and bits according to channel environment, thereby considerably improving frequency use efficiency as well as a power gain.
摘要翻译： 在多用户MIMO / OFDMA系统中，从终端接收反馈信息。 使用反馈信息确定每个用户的信道增益和传输速率。 根据通道增益计算每个用户的平均通道增益。 根据平均通道增益确定每个用户的平均位数。 根据每个用户的平均位数来计算每个用户的子信道数量。 根据每个用户的子信道数量，向每个用户分配一个或多个子信道。 确定每个子信道的调制方案。 资源分配方法根据信道环境自适应地分配子信道和比特，从而大大提高频率使用效率以及功率增益。
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6.发明公开Apparatus and method for determining beamforming vector in a codebook-based beamforming system 有权设备和方法，用于在基于码本的波束形成系统中确定波束形成向量
公开(公告)号：EP1816758A2
公开(公告)日：2007-08-08
申请号：EP07002340.3
申请日：2007-02-02
发明人： Lee, Jong-Hyeuk , Cho, Myeon-Kyun , Nam, Seung-Hoon , Yun, Jae-Yeun , Lee, Yong-Hoon , Chung, Sae-Young , Choi, Jihoon
IPC分类号： H04B7/06
CPC分类号： H04B7/066 , H04B7/0417 , H04B7/0626 , H04B7/0639 , H04L25/0204 , H04L25/022 , H04L27/2601
摘要： An apparatus and method for determining a beamforming vector in a codebook-based transmission beamforming system are provided. In a feedback method for a receiver in a codebook-based transmission beamforming system, forthcoming channel values for a forthcoming period are generated using M present and previous channel estimates. Effective channel gains for all transmission beamforming vectors included in a codebook are calculated using the forthcoming channel values. A codebook index corresponding to the maximum effective channel gains is fed back to a transmitter.
摘要翻译： 确定性采矿中提供了一个基于码本的传输波束形成系统的波束形成向量的装置和方法。 在用于在基于码本的传输波束形成系统的接收器的反馈方法中，使用M个当前和先前的信道估计生成用于下一期间即将信道值。 对于包括在码本中的所有发送波束成形向量的有效信道增益是使用即将信道值来计算。 码本索引对应于最大有效信道增益被反馈到发射机。
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7.发明公开Beamforming method for a MIMO space division multilplexing system 审中-公开Strahlformungsverfahrenfürein MIMO-raumteilungsmultiplexiertes系统
公开(公告)号：EP1598955A2
公开(公告)日：2005-11-23
申请号：EP05010669.9
申请日：2005-05-17
IPC分类号： H04B7/06
CPC分类号： H04B7/0626 , H04B7/0617
摘要： A beamforming method in a communication system having a transmitter for transmitting signals to users on a plurality of transmit antennas, and spatially identifying the users and a plurality of receivers for receiving the signals discriminately. A beamforming weight is determined based on channel information received from each of the receivers, based on whether the each receiver uses a single antenna or a plurality of antennas. A transmission signal is multiplied by the beamforming weight and transmitted.
摘要翻译： 一种通信系统中的波束形成方法，具有用于在多个发射天线上向用户发送信号的发射机，以及空间识别用户和用于接收信号的多个接收机。 基于每个接收机是使用单个天线还是多个天线，基于从每个接收机接收的信道信息来确定波束成形权重。 传输信号乘以波束成形权重并传输。
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8.发明授权
公开(公告)号：EP1677478B1
公开(公告)日：2018-04-11
申请号：EP05028742.4
申请日：2005-12-30
CPC分类号： H04L5/0094 , H04L1/0017 , H04L1/0029 , H04L1/0035 , H04L5/0007 , H04L5/0046 , H04L5/006 , H04W24/00 , H04W24/10 , H04W28/06 , H04W72/042 , H04W72/0453
摘要： An adaptive subchannel and bit allocation method in a wireless communication system. A mobile station analyzes channel quality information of a subchannel at a predetermined period and determines a feedback band index with a maximum decision criterion. The mobile station feeds back the determined feedback band index with the maximum decision criterion to a base station. The base station generates band allocation information using the feedback information from the mobile station, and transmits the band allocation information to the mobile station. The mobile station transmits AMC information using the band allocation information received from the base station. The base station estimates a channel using the AMC information transmitted from the mobile station and allocates bits to the allocated band according to the channel estimation result.
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9.发明授权Apparatus and method for transmitting training symbol groups in an OFDM communications system using multiple antennas 有权用于在多天线OFDM通信系统中发送导频码元组的方法和装置
公开(公告)号：EP1473862B1
公开(公告)日：2017-04-05
申请号：EP04002961.3
申请日：2004-02-10
CPC分类号： H04L1/06 , H04L25/0236
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10.发明公开Apparatus and Method for Calibrating Channel in Radio Communication System Using Multiple Antennas 有权装置和方法用于在具有多个天线的无线通信系统中校准信道
公开(公告)号：EP1764967A3
公开(公告)日：2007-10-03
申请号：EP06120675.1
申请日：2006-09-14
CPC分类号： H04B7/0413 , H04B17/24 , H04L5/1469 , H04L25/0204 , H04L25/0224
摘要： Provided is an apparatus and method for calibrating a channel in a radio communication system using multiple antennas. A base station apparatus for the radio communication system includes a channel estimator and a calculator. The channel estimator receives a UL (Uplink) sounding signal to estimate a first UL CSI (Channel State Information) and receives a UL sounding signal weighted with a DL (Downlink) CSI to estimate a second UL CSI. The calculator calculates calibration values for the respective antenna pairs using the first UL CSI and the second UL CSI. Information necessary for channel calibration is transmitted and received in an analog format. Accordingly, it is possible to minimize the waste of resource and time necessary for channel calibration.
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