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    • 1. 发明申请
    • PRE-CODING METHOD FOR MIMO SYSTEM AND APPARATUS USING THE METHOD
    • 用于MIMO系统的预编码方法和使用该方法的装置
    • US20080095258A1
    • 2008-04-24
    • US11875600
    • 2007-10-19
    • Xiaoming SheJingxiu LiuLan ChenKenichi Higuchi
    • Xiaoming SheJingxiu LiuLan ChenKenichi Higuchi
    • H04L27/28
    • H04L25/03343H04B7/0639H04B7/066H04L1/0675
    • A pre-coding method for a MIMO system and an apparatus using the same are described. In the method, a receiver determines a corresponding codebook from a multi-codebook including multiple codebooks according to a location of a resource block, selects a corresponding codeword index from the determined codebook and transmits the index to a transmitter; the transmitter determines the corresponding codebook from the multi-codebook including multiple codebooks according to the location of the resource block where transmission data is to be transmitted, selects a corresponding codeword from the determined codebook according to the codeword index and performs pre-coding for the transmission data with the selected codeword. The pre-coding is performed with the multi-codebook in the present invention, which increases a diversity of pre-coding matrixes, so dynamic fluctuation range of a equivalent channel is improved and thus the performance of multi-user scheduling is enhanced effectively.
    • 对MIMO系统的预编码方法及使用该MIMO系统的装置进行说明。 在该方法中,接收机根据资源块的位置从包括多个码本的多码本中确定相应的码本,从确定的码本中选择相应的码字索引,并将该索引发送给发射机; 发射机根据发送数据的资源块的位置根据码字索引从包含多个码本的多码本中确定相应的码本,根据码字索引从所确定的码本中选择一个相应的码字,并执行预编码 传输数据与选定的码字。 利用本发明的多码本进行预编码,这增加了预编码矩阵的分集,从而提高了等效信道的动态波动范围,从而有效地提高了多用户调度的性能。
    • 2. 发明授权
    • Pre-coding method for MIMO system and apparatus using the method
    • MIMO系统的预编码方法和使用该方法的装置
    • US07912141B2
    • 2011-03-22
    • US11875600
    • 2007-10-19
    • Xiaoming SheJingxiu LiuLan ChenKenichi Higuchi
    • Xiaoming SheJingxiu LiuLan ChenKenichi Higuchi
    • H04L1/02H04B7/02
    • H04L25/03343H04B7/0639H04B7/066H04L1/0675
    • A pre-coding method for a MIMO system and an apparatus using the same are described. In the method, a receiver determines a corresponding codebook from a multi-codebook including multiple codebooks according to a location of a resource block, selects a corresponding codeword index from the determined codebook and transmits the index to a transmitter; the transmitter determines the corresponding codebook from the multi-codebook including multiple codebooks according to the location of the resource block where transmission data is to be transmitted, selects a corresponding codeword from the determined codebook according to the codeword index and performs pre-coding for the transmission data with the selected codeword. The pre-coding is performed with the multi-codebook in the present invention, which increases a diversity of pre-coding matrixes, so dynamic fluctuation range of a equivalent channel is improved and thus the performance of multi-user scheduling is enhanced effectively.
    • 对MIMO系统的预编码方法及使用该MIMO系统的装置进行说明。 在该方法中,接收机根据资源块的位置从包括多个码本的多码本中确定相应的码本,从确定的码本中选择相应的码字索引,并将该索引发送给发射机; 发射机根据发送数据的资源块的位置根据码字索引从包含多个码本的多码本中确定相应的码本,根据码字索引从所确定的码本中选择一个相应的码字,并执行预编码 传输数据与选定的码字。 利用本发明的多码本进行预编码,这增加了预编码矩阵的分集,从而提高了等效信道的动态波动范围,从而有效地提高了多用户调度的性能。
    • 9. 发明授权
    • Radio relay station apparatus, radio base station apparatus and transmission power control method
    • 无线中继站装置,无线基站装置及发射功率控制方法
    • US08913555B2
    • 2014-12-16
    • US13521455
    • 2011-01-13
    • Kenichi Higuchi
    • Kenichi Higuchi
    • H04W4/00H04B7/155H04W52/46H04W84/04
    • H04B7/15535H04W52/46H04W84/047
    • A radio relay station apparatus has a receiving section configured to receive a downlink signal including relay information as to whether or not a mobile terminal apparatus performs relay transmission, a relay amplification factor control section configured to control a relay amplification factor when performing the relay transmission when the relay information is information indicating that the relay transmission is performed, and a transmitting section configured to transmit an uplink signal amplified at the controlled relay amplification factor. The relay amplification factor control section controls the relay amplification factor so that a power density of a signal from the mobile terminal apparatus received at a radio base station apparatus via the radio relay station apparatus becomes substantially equal to a case where the mobile terminal apparatus exists at a position of the radio relay station apparatus and performs transmission without relay transmission.
    • 无线中继站装置具有接收部,被配置为接收包括关于移动终端装置是否进行中继发送的中继信息的下行链路信号;中继放大系数控制部,被配置为在执行中继发送时控制中继放大系数, 中继信息是指示执行中继传输的信息,以及发送部,被配置为发送以受控继电器放大率放大的上行链路信号。 继电器放大率控制部分控制继电器放大系数,使得经由无线电中继站设备从无线基站装置接收的来自移动终端的信号的功率密度变得基本等于移动终端设备存在的情况 无线中继站装置的位置,进行无中继发送的发送。