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    • 1. 发明授权
    • Radio communication system and receiving apparatus
    • 无线电通信系统和接收装置
    • US09225557B2
    • 2015-12-29
    • US13636054
    • 2011-03-29
    • Hiromichi TomebaOsamu NakamuraShinpei Toh
    • Hiromichi TomebaOsamu NakamuraShinpei Toh
    • H04L25/02H04L27/26
    • H04L25/0226H04L25/0204H04L25/022H04L25/0228H04L27/2647
    • A radio communication system includes a multiple number of transmitting apparatus and a receiving apparatus including a multiple number of receive antennas, in which the transmitting apparatus generates a reference signal that is obtained by adding a different time shift to a known signal between the transmitting apparatus and the receiving apparatus, multiplexes a data signal with the reference signal and transmits the resultant signal. The receiving apparatus separates reference signals multiplexed on the signals received from the multiple transmitting apparatus, and estimates channel information from the reference signals, which have been transmitted through common frequencies in part or whole of the signal spectra. Then, the data signal is decoded based on the estimated channel information.
    • 无线电通信系统包括多个发送装置和包括多个接收天线的接收装置,其中发送装置生成通过在发送装置和发送装置之间向已知信号添加不同的时移而获得的参考信号, 接收装置将数据信号与参考信号进行复用,并发送所得到的信号。 接收装置分离从多个发送装置接收到的信号上多路复用的参考信号,并从信号频谱的一部分或全部通过公共频率发送的参考信号估计信道信息。 然后,基于估计的信道信息对数据信号进行解码。
    • 2. 发明申请
    • RADIO COMMUNICATION SYSTEM AND RECEIVING APPARATUS
    • 无线电通信系统和接收设备
    • US20130016712A1
    • 2013-01-17
    • US13636054
    • 2011-03-29
    • Hiromichi TomebaOsamu NakamuraShinpei Toh
    • Hiromichi TomebaOsamu NakamuraShinpei Toh
    • H04J3/00
    • H04L25/0226H04L25/0204H04L25/022H04L25/0228H04L27/2647
    • A radio communication system includes a multiple number of transmitting apparatus and a receiving apparatus including a multiple number of receive antennas, in which the transmitting apparatus generates a reference signal that is obtained by adding a different time shift to a known signal between the transmitting apparatus and the receiving apparatus, multiplexes a data signal with the reference signal and transmits the resultant signal. The receiving apparatus separates reference signals multiplexed on the signals received from the multiple transmitting apparatus, and estimates channel information from the reference signals, which have been transmitted through common frequencies in part or whole of the signal spectra. Then, the data signal is decoded based on the estimated channel information.
    • 无线电通信系统包括多个发送装置和包括多个接收天线的接收装置,其中发送装置生成通过在发送装置和发送装置之间向已知信号添加不同的时移而获得的参考信号, 接收装置将数据信号与参考信号进行复用,并发送所得到的信号。 接收装置分离从多个发送装置接收到的信号上多路复用的参考信号,并从信号频谱的一部分或全部通过公共频率发送的参考信号估计信道信息。 然后,基于估计的信道信息对数据信号进行解码。
    • 4. 发明授权
    • Base station apparatus, terminal apparatus and wireless communication system using them
    • 基站装置,终端装置和使用它们的无线通信系统
    • US09019919B2
    • 2015-04-28
    • US13700756
    • 2011-05-27
    • Shimpei ToTakashi OnoderaKozue HirataHiroshi NakanoHiromichi TomebaMinoru Kubota
    • Shimpei ToTakashi OnoderaKozue HirataHiroshi NakanoHiromichi TomebaMinoru Kubota
    • H04B7/06
    • H04B7/0697H04B7/0617
    • When signals received by receiving antennas included in each terminal are subjected to MMSE combining, it is configured that each terminal is able to grasp position of desired signal in signal vector obtained after combining. A base station 100 receives by a receiving antenna 23 from the terminal apparatus channel state information between a transmitting antenna 16 and spatial multiplexing object antennas included in each terminal apparatus. A transmit weight calculation unit 19 calculates a transmit weight for performing spatial multiplexing transmission to the terminal apparatus based on the channel state information. Transmit weight multiplication unit s 12 and 18 multiplies an information signal addressed to each terminal apparatus to be performed spatial multiplexing by the transmit weight. A signal multiplexing unit 13 multiplexes the information signal multiplied by the transmit weight and an information to specify the information signal that needs to be demodulated by each terminal apparatus.
    • 当通过每个终端中包含的接收天线接收到的信号进行MMSE组合时,配置为每个终端能够在组合后获得的信号向量中掌握期望信号的位置。 基站100由发送天线16和各终端装置中包含的空间复用对象天线之间的终端装置信道状态信息由接收天线23接收。 发送权重计算单元19基于信道状态信息计算用于对终端装置执行空间复用传输的发送权重。 发送权重乘法单元12和18将寻址到每个终端设备的信息信号乘以发送权重进行空间复用。 信号复用单元13将乘以发送权重的信息信号和用于指定每个终端装置需要解调的信息信号的信息进行复用。
    • 9. 发明申请
    • WIRELESS COMMUNICATION SYSTEM, BASE STATION DEVICE, AND TERMINAL DEVICE
    • 无线通信系统,基站设备和终端设备
    • US20130336418A1
    • 2013-12-19
    • US14002616
    • 2012-03-02
    • Hiromichi TomebaTakashi OnoderaHiroshi NakanoAlvaro Ruiz DelgadoShimpei To
    • Hiromichi TomebaTakashi OnoderaHiroshi NakanoAlvaro Ruiz DelgadoShimpei To
    • H04B7/04
    • H04B7/0482H04B7/0452H04B7/0465H04B7/0632H04B7/0697H04L1/0003
    • A terminal device notifies a base station device about control information associated with a receive quality of the terminal device. The base station device performs data modulation on a plurality of pieces of transmit data for the terminal device, by using a plurality of different data modulation schemes one by one, based on the control information, and spatially multiplexes the plurality of pieces of transmit data after the data modulation over a single wireless resource and transmits a spatially multiplexed signal. The terminal device receives the signal with the plurality of pieces of transmit data spatially multiplexed, and detects desirable transmit data from the receive signal, based on a first channel matrix which represents channel state information between the base station device and the terminal device and a second channel matrix in which the first channel matrix is multiplied by a transform matrix. Accordingly, an adaptive modulation technology is applied even to MIMO spatial multiplexing transmission using a LR technology, and hence a wireless communication system and so forth that can contribute to improvement in frequency utilization efficiency can be provided.
    • 终端装置向基站装置通知与终端装置的接收质量有关的控制信息。 基站装置基于控制信息,通过使用多个不同的数据调制方案,对终端装置的多条发送数据进行数据调制,并且将多条发送数据在 通过单个无线资源进行数据调制,并发送空间复用信号。 终端设备接收具有多个发送数据的信号进行空间复用,并且基于表示基站设备与终端设备之间的信道状态信息的第一信道矩阵和第二信道矩阵,从接收信号中检测期望的发送数据 信道矩阵,其中第一信道矩阵乘以变换矩阵。 因此,利用LR技术甚至可以应用自适应调制技术进行MIMO空间复用传输,因此可以提供有助于提高频率利用效率的无线通信系统等。