会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 5. 发明申请
    • WIRELESS APPARATUS AND DISTORTION COMPENSATING METHOD
    • 无线设备和失效补偿方法
    • US20130259154A1
    • 2013-10-03
    • US13753818
    • 2013-01-30
    • FUJITSU LIMITED
    • Hikaru ISHIKAWASatoshi MATSUBARAHideharu SHAKO
    • H04B15/00
    • H04B15/00H03F1/3241H04B1/0475H04B2001/0425
    • A wireless apparatus includes amplifying systems each including a storing unit storing a distortion compensation coefficient for compensation for a nonlinear distortion of one or more transmission signals, a compensator compensating for the nonlinear distortion using the distortion compensation coefficient stored in the storing unit, and an amplifier amplifying the transmission signal after distortion compensation. The wireless apparatus further includes a switch that selects feedback signals corresponding to the transmission signals output from the amplifying systems, a subtractor that derives one or more differences between the feedback signal selected in the switch and the transmission signal, a first calculator that derives a distortion compensation coefficient that restricts the difference derived in the subtractor, and a switch controller that controls a length of time during which the feedback signal is selected in the switch depending on magnitude of distortion of the transmission signal output from the amplifying system.
    • 无线装置包括放大系统,每个放大系统包括存储单元,该存储单元存储用于补偿一个或多个发送信号的非线性失真的失真补偿系数,使用存储在存储单元中的失真补偿系数补偿非线性失真的补偿器,以及放大器 在失真补偿后放大传输信号。 所述无线装置还包括选择与从所述放大系统输出的发送信号对应的反馈信号的开关,导出所述开关中选择的反馈信号与所述发送信号之间的一个或多个差异的减法器,导出失真的第一计算器 限制在减法器中导出的差异的补偿系数;以及开关控制器,其根据从放大系统输出的发送信号的失真的大小来控制在开关中选择反馈信号的时间长度。
    • 8. 发明申请
    • DELAY QUANTITY ESTIMATION APPARATUS AND DELAY QUANTITY ESTIMATION METHOD
    • 延迟量估计装置和延迟量估计方法
    • US20140146910A1
    • 2014-05-29
    • US14039598
    • 2013-09-27
    • FUJITSU LIMITED
    • Satoshi MATSUBARAHIDEHARU SHAKOMitsuharu HAMANOKazuo NAGATANI
    • H04B15/00
    • H04B1/0475
    • A delay quantity estimation apparatus comprises a first correlation value arithmetic unit to calculate a first correlation value as a correlation value between a first input signal and a feedback signal delayed with a first delay value; a second correlation value arithmetic unit to calculate a second correlation value as a correlation value between the first input signal and a feedback signal delayed with a second delay value; and a delay quantity estimation unit to estimate a delay quantity of the feedback signal with respect to the input signal on the basis of the first difference value as a difference between the first correlation value and the second correlation value, wherein the second delay value is a value given by adding a certain value to the first delay value.
    • 延迟量估计装置包括第一相关值运算单元,用于计算第一相关值作为第一输入信号和以第一延迟值延迟的反馈信号之间的相关值; 第二相关值运算单元,计算第二相关值作为第一输入信号与以第二延迟值延迟的反馈信号之间的相关值; 以及延迟量估计单元,用于基于所述第一差值将所述反馈信号相对于所述输入信号的延迟量估计为所述第一相关值和所述第二相关值之间的差,其中所述第二延迟值为 通过向第一延迟值添加一定值给出的值。
    • 10. 发明申请
    • DISTORTION COMPENSATION DEVICE AND DISTORTION COMPENSATION METHOD
    • 失真补偿装置和失真补偿方法
    • US20140145788A1
    • 2014-05-29
    • US14010064
    • 2013-08-26
    • FUJITSU LIMITED
    • Satoshi MATSUBARAMitsuharu HAMANOHideharu SHAKO
    • H03F1/32
    • H03F1/3241H03F1/3258H03F3/189H03F3/24H03F2200/336H03F2201/3233
    • A distortion compensation device includes a storage unit, an address generator, and a distortion compensation processor. The storage unit stores therein a distortion compensation coefficient for compensating distortion generated in an amplifier for amplifying an input signal. The address generator generates a first address based on a power value of the signal at a current time. Furthermore, the address generator delays, every time a new augend is input, the sum of the power value of the signal at the current time and the augend. The address generator generates a second address based on the sum obtained by calculating a new augend, from the delayed sum. The distortion compensation processor acquires a distortion compensation coefficient corresponding to a combination of the first address and the second address from the storage unit and performs distortion compensation processing on the signal by using the acquired distortion compensation coefficient.
    • 失真补偿装置包括存储单元,地址发生器和失真补偿处理器。 存储单元存储用于补偿放大器中产生的用于放大输入信号的失真的失真补偿系数。 地址产生器基于当前时间的信号的功率值产生第一地址。 此外,每当输入新的加法器时,地址发生器都会延迟当前时间的信号功率和加法器的总和。 地址发生器基于通过从延迟和计算新的加法而获得的总和来生成第二地址。 失真补偿处理器从存储单元获取对应于第一地址和第二地址的组合的失真补偿系数,并通过使用所获取的失真补偿系数对该信号执行失真补偿处理。