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
    • 81. 发明授权
    • MIMO antenna apparatus controlling number of streams and modulation and demodulation method
    • MIMO天线设备控制流数和调制解调方法
    • US07792084B2
    • 2010-09-07
    • US11892886
    • 2007-08-28
    • Atsushi YamamotoHiroshi IwaiAkira KatoSatoru Amari
    • Atsushi YamamotoHiroshi IwaiAkira KatoSatoru Amari
    • H04W4/00
    • H04B7/0413H04B17/309H04B17/382H04L1/0002H04L1/0015H04L1/0625
    • A MIMO antenna apparatus receives a plurality of radio signals modulated and transmitted by a sender-side radio station apparatus using a MIMO (Multi-Input Multi-Output) communication method with a number of data streams and a modulation and demodulation method. The MIMO antenna apparatus includes a plurality of antenna elements, detection means, MIMO demodulation means, radio transmission means, and control means. The control means controls the sender-side radio station apparatus by making the radio transmission means transmit the control signal, and controlling the MIMO demodulation means, so as to change, based on the received signal levels and the signal quality, at least one of the number of data streams and the modulation and demodulation method for the MIMO communication method used by the sender-side radio station apparatus and the MIMO demodulation means.
    • MIMO天线装置使用具有多个数据流的MIMO(多输入多输出)通信方式和调制解调方式,接收由发送侧无线站装置调制和发送的多个无线信号。 MIMO天线设备包括多个天线元件,检测装置,MIMO解调装置,无线电传输装置和控制装置。 控制装置通过使无线电发送装置发送控制信号并控制MIMO解调装置来控制发送方侧无线电台装置,以便基于所接收的信号电平和信号质量改变至少一个 数据流的数量以及由发送方侧无线电台装置和MIMO解调装置使用的MIMO通信方式的调制解调方法。
    • 83. 发明申请
    • RADIO COMMUNICATION APPARATUS
    • 无线电通信设备
    • US20090147834A1
    • 2009-06-11
    • US11917792
    • 2006-06-30
    • Takaaki KishigamiHiroshi Iwai
    • Takaaki KishigamiHiroshi Iwai
    • H04B1/707H04B1/06H04M1/00
    • H04B1/18H04B1/0458H04B2201/70701
    • An object of the invention is to stabilize the convergence operation at the automatic impedance matching time and ensure the reception quality in the convergence process in a fading environment in a radio communication apparatus which performs automatic impedance matching between an antenna and a Radio frequency section to decrease the impedance matching loss, for example, when the apparatus is brought close to a human body. A radio communication apparatus of the invention includes a Radio frequency section 3 which converts a received signal into a baseband signal, a variable impedance unit 2 which adjusts impedance between an antenna 1 and the Radio frequency section 3, a pilot signal extraction unit 4 which extracts a pilot signal from the baseband signal, a first channel compensation unit 5 which performs channel compensation using an output of the pilot signal extraction unit, an impedance control adequacy detection unit 7 which detects impedance control adequacy using an output of the first channel compensation unit, an impedance control unit 8 which controls the variable impedance unit 2 using an output of the impedance control adequacy detection unit, a second channel compensation unit 6 which performs channel compensation using the pilot signal, and a demodulation section 9 which performs the demodulation operation using an output of the second channel compensation unit.
    • 本发明的一个目的是在自动阻抗匹配时间稳定收敛操作,并且确保在天线和射频部分之间进行自动阻抗匹配的无线电通信装置的衰落环境中的收敛过程中的接收质量降低 阻抗匹配损失,例如当该装置靠近人体时。 本发明的无线通信装置具有将接收信号转换为基带信号的射频部3,调整天线1与射频部3之间的阻抗的可变阻抗部2,提取出导频信号提取部4 来自基带信号的导频信号,使用导频信号提取单元的输出进行信道补偿的第一信道补偿单元5,使用第一信道补偿单元的输出来检测阻抗控制充分性的阻抗控制适合度检测单元7, 阻抗控制单元8,其使用阻抗控制充分性检测单元的输出来控制可变阻抗单元2;第二信道补偿单元6,其使用导频信号进行信道补偿;以及解调单元9,其使用 输出第二通道补偿单元。