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    • 96. 发明申请
    • TRANSMITTER, RECEIVER, POWER AMPLIFICATION METHOD, AND SIGNAL DEMODULATION METHOD
    • 发射机,接收机,功率放大方法和信号解调方法
    • US20100219884A1
    • 2010-09-02
    • US12714771
    • 2010-03-01
    • Hiromasa FujiiTakahiro AsaiYukihiko OkumuraShigeru TomisatoMasaharu Hata
    • Hiromasa FujiiTakahiro AsaiYukihiko OkumuraShigeru TomisatoMasaharu Hata
    • G06G7/12
    • H04L27/2624H04L27/2626H04L27/2647
    • There is provided a transmitter including a nonlinear input-output conversion characteristic control unit configured to determine a nonlinear input-output conversion characteristic for converting a signal depending on a usage status of a frequency band; an amplitude control unit configured to convert an amplitude of the signal based on the determined nonlinear input-output conversion characteristic; and a transmission power amplification unit configured to amplify power of the signal with the converted amplitude. There is also provided a transmitter including a nonlinear input-output conversion characteristic control unit configured to determine a nonlinear input-output conversion characteristic for converting a signal depending on a usage status of a frequency band; plural transmission power amplification units having different nonlinear input-output conversion characteristics; and a selecting unit configured to select one of the plural transmission power amplification units based on the determined nonlinear input-output conversion characteristic.
    • 提供了一种发射机,包括:非线性输入 - 输出转换特性控制单元,被配置为根据频带的使用状态确定用于转换信号的非线性输入 - 输出转换特性; 幅度控制单元,被配置为基于所确定的非线性输入 - 输出转换特性来转换所述信号的幅度; 以及发送功率放大单元,被配置为以转换的幅度放大所述信号的功率。 还提供了一种发射机,包括:非线性输入 - 输出转换特性控制单元,被配置为根据频带的使用状态确定用于转换信号的非线性输入 - 输出转换特性; 具有不同非线性输入输出转换特性的多个发送功率放大单元; 以及选择单元,被配置为基于所确定的非线性输入 - 输出转换特性来选择所述多个发送功率放大单元中的一个。
    • 100. 发明授权
    • Communication system and method using a relay node
    • 通信系统和方法使用中继节点
    • US07525939B2
    • 2009-04-28
    • US11213886
    • 2005-08-30
    • Tetsushi AbeHui ShiTakahiro AsaiHitoshi Yoshino
    • Tetsushi AbeHui ShiTakahiro AsaiHitoshi Yoshino
    • H04Q7/00
    • H04B7/0615H04B7/026H04B7/0842H04W40/02H04W52/46H04W88/04
    • A communication node relays a transmission signal transmitted from a desired source node to a target destination node among multiple source nodes and multiple destination nodes. The communication node includes a first unitary matrix estimation unit that estimates a first unitary matrix by performing singular value decomposition involving one or more channel matrices between the relay node and the source nodes other than the desired source node; a second unitary matrix estimation unit that estimates a second unitary matrix by performing singular value decomposition involving one or more channel matrices between the relay node and the destination nodes other than the target destination node; and a transmission unit configured to transmit a relaying signal generated by multiplying a received signal by the first and second unitary matrices toward the target destination node.
    • 通信节点将从期望的源节点发送的发送信号中继到多个源节点和多个目的地节点中的目标目的地节点。 通信节点包括第一单位矩阵估计单元,其通过执行涉及中继节点和除所需源节点之外的源节点之间的一个或多个信道矩阵的奇异值分解来估计第一单位矩阵; 第二单位矩阵估计单元,通过执行涉及所述中继节点与所述目的地节点之外的目的地节点之间的一个或多个信道矩阵的奇异值分解来估计第二单位矩阵; 以及发送单元,被配置为将通过将接收信号乘以第一和第二单位矩阵而生成的中继信号发送到目标目的地节点。