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    • 51. 发明申请
    • WIRELESS COMMUNICATION SYSTEM, WIRELESS COMMUNICATION DEVICE, AND WIRELESS COMMUNICATION METHOD
    • 无线通信系统,无线通信设备和无线通信方法
    • US20110038346A1
    • 2011-02-17
    • US12989942
    • 2009-04-28
    • Kazunari YokomokoraYasuhiro HamaguchiShimpei ToOsamu Nakamura
    • Kazunari YokomokoraYasuhiro HamaguchiShimpei ToOsamu Nakamura
    • H04W72/04
    • H04L5/0039H04L5/0007H04L5/006H04L5/0094H04L27/2614
    • A wireless communication system includes a first communication device which arranges a frequency signal into which a single carrier signal is converted by time-to-frequency conversion in subcarriers and wirelessly transmits a resultant signal and a second communication device which receives the signal wirelessly transmitted by the first communication device. The wireless communication system includes a selection unit which calculates, for each determined selection candidate as a combination of a predetermined segment size and information indicating predetermined average transmission power, a value indicating reception quality in the second communication device upon transmission by the first communication device by using an arrangement using the predetermined segment size, and the predetermined average transmission power, and which selects a selection candidate to be used upon transmission by the first communication device from among the selection candidates based on the calculated value indicating the reception quality. Therefore, an excellent transmission efficiency is obtained.
    • 一种无线通信系统包括:第一通信装置,其通过在子载波中进行时间 - 频率转换而将单个载波信号进行转换的频率信号,并且无线地发送合成信号;以及第二通信装置,其接收由所述信号无线发送的信号 第一通信设备。 无线通信系统包括:选择单元,对于作为预定分段大小和表示预定平均发送功率的信息的组合的每个确定的选择候选,计算第一通信设备通过第一通信设备发送时指示第二通信设备中的接收质量的值 使用预定分段大小和预定平均发送功率的布置,并且根据表示接收质量的计算值,从选择候选中选择要由第一通信设备发送的选择候选。 因此,获得了良好的传输效率。
    • 54. 发明申请
    • RECEIVER AND FREQUENCY INFORMATION ESTIMATING METHOD
    • 接收和频率信息估计方法
    • US20090196166A1
    • 2009-08-06
    • US12302794
    • 2007-06-07
    • Yasuhiro HamaguchiHideo NambaShimpei To
    • Yasuhiro HamaguchiHideo NambaShimpei To
    • H04J11/00
    • H04L25/0232H04L25/022H04L27/265H04L2025/03414H04L2025/03426
    • A receiver 100 has a Fourier transform section 105 Fourier-transforming symbols for propagation path estimation including subcarriers modulated by known signals different for two or more antennas to calculate first frequency information, a multiplying section 107 multiplying the first frequency information by complex conjugate signals of two or more known codes to calculate second frequency information of each of the subcarriers, an interpolation information generating section 121 selecting partial information from the second frequency information on the basis of the known codes and generating interpolation frequency information interpolating the subcarriers using the selected information, a subcarrier interpolating section 122 interpolating the interpolation frequency information to the second frequency information to calculate third frequency information, and an inverse Fourier transform section 109 inverse-Fourier-transforming the third frequency information.
    • 接收机100具有付里叶变换部105,傅里叶变换用于传播路径估计的符号,包括由两个或多个天线不同的已知信号调制的子载波,以计算第一频率信息;乘法部分107将第一频率信息乘以二 或更多的已知代码来计算每个子载波的第二频率信息,插值信息生成部分121根据已知代码从第二频率信息中选择部分信息,并使用所选择的信息产生插值子载波的插值频率信息; 子载波内插部分122将内插频率信息内插到第二频率信息以计算第三频率信息,以及逆傅立叶变换部分109对第三频率信息进行傅立叶逆变换。