利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

28 条记录 (耗时 0.015 秒)

    Receiver Apparatus and Transmitter Apparatus
    2.
    发明申请
    Receiver Apparatus and Transmitter Apparatus 审中-公开
    接收装置和发射机装置

    公开(公告)号：US20070263529A1

    公开(公告)日：2007-11-15

    申请号：US11660762

    申请日：2005-08-08

    申请人： Katsutoshi Ishikura ,  Hidenobu Fukumasa

    发明人： Katsutoshi Ishikura ,  Hidenobu Fukumasa

    IPC分类号： H04L5/04

    CPC分类号： H04L5/0016 ,  H04L1/0057 ,  H04L1/0072 ,  H04L5/0048 ,  H04L5/0053 ,  H04L25/0226 ,  H04L25/0228

    摘要： In a wireless communication system based on an OFDM technology, a control channel and a low-speed data channel can be multiplexed without a reduction in the transmission speed of a traffic channel. In a communication system that is operated by multiplexing a traffic channel for performing high-speed data transmission and a control channel for performing low-speed control information transmission, an OFDM signal for transmitting the traffic channel and an OFDM signal for transmitting a control signal are multiplexed for transmission. In a receiving station, the control channel is first demodulated/decoded and a judgment is made as to whether or not any signal addressed to the self station is contained in a traffic channel signal. When any signal addressed to the self station is contained, the control channel signal is cancelled from the reception signal in accordance with a wireless channel quality and the traffic channel is demodulated.

    摘要翻译： 在基于OFDM技术的无线通信系统中，可以复用控制信道和低速数据信道，而不会降低业务信道的传输速度。 在通过多路化用于执行高速数据传输的业务信道和用于执行低速控制信息传输的控制信道进行操作的通信系统中，用于发送业务信道的OFDM信号和用于发送控制信号的OFDM信号是 多路传输。 在接收站中，首先对控制信道进行解调/解码，并且判断寻址到自身站的任何信号是否包含在业务信道信号中。 当包含寻址到自站的任何信号时，控制信道信号根据无线信道质量从接收信号中消除，业务信道被解调。

    Radiocommunication apparatus, and radiocommunication system
    3.
    发明授权
    Radiocommunication apparatus, and radiocommunication system 失效
    无线电通信装置和无线电通信系统

    公开(公告)号：US06198731B1

    公开(公告)日：2001-03-06

    申请号：US08995252

    申请日：1997-12-19

    申请人： Hajime Hamada ,  Yasuyuki Oishi ,  Kazuo Nagatani ,  Hidenobu Fukumasa ,  Yoshihiko Asano

    发明人： Hajime Hamada ,  Yasuyuki Oishi ,  Kazuo Nagatani ,  Hidenobu Fukumasa ,  Yoshihiko Asano

    IPC分类号： H04B7216

    CPC分类号： H04B1/707 ,  H04B7/2628

    摘要： There are disclosed a radiocommunication apparatus and a radiocommunication system. There are provided a receiving section capable of receiving a plurality of types of signals which have been spread through use of different spread code information according to a CDMA scheme in a transmitting-side radiocommunication apparatuses; and a spread demodulation section which carries out despread processing for the common signal portions of the plurality of types of signals received by the receiving section through use of a composite spread code formed from a plurality of spread codes. Accordingly, it becomes possible to significantly improve the quality of received signals.

    摘要翻译： 公开了一种无线电通信装置和无线电通信系统。 提供了一种能够在发送侧无线电通信装置中接收根据CDMA方案通过使用不同扩展码信息而扩展的多种类型的信号的接收部分; 以及扩展解调部分，通过使用由多个扩展码形成的复合扩展码，对由接收部分接收的多种类型的信号的公共信号部分进行解扩处理。 因此，可以显着提高接收信号的质量。

    Code multiplexing transmitting apparatus
    5.
    发明授权
    Code multiplexing transmitting apparatus 有权
    码复用发送装置

    公开(公告)号：US07376114B2

    公开(公告)日：2008-05-20

    申请号：US10272660

    申请日：2002-10-17

    申请人： Kazuo Nagatani ,  Yasuyuki Oishi ,  Hidenobu Fukumasa ,  Hajime Hamada ,  Yoshihiko Asano

    发明人： Kazuo Nagatani ,  Yasuyuki Oishi ,  Hidenobu Fukumasa ,  Hajime Hamada ,  Yoshihiko Asano

    IPC分类号： H04L5/12 ,  H04L27/12 ,  H04B7/216 ,  H04J13/00

    CPC分类号： H04J13/0003 ,  H04B1/707 ,  H04B2201/70706 ,  H04J13/0051 ,  H04J13/18

    摘要： A code multiplexing transmitting apparatus spread-spectrum modulates transmission data of a plurality of channels by spreading codes that differ from one another, combines the spread-spectrum signals of each of the channels and transmits the resultant spread-spectrum modulated signal. A spread-spectrum modulating unit for each channel includes a phase shifter for shifting, by a predetermined angle channel by channel, the phase of a position vector of the spread-spectrum modulated signal of each channel. As the result of such phase control, the phases of pilot signal portions of the spread-spectrum modulated signals of the respective channels are shifted relative to one another so that the peak values of the code-multiplexed signal can be suppressed.

    摘要翻译： 扩频编码多路复用发送装置通过扩展彼此不同的码来对多个信道的发送数据进行扩频调制，合成各个信道的扩频信号，并发送合成的扩频调制信号。 用于每个通道的扩频调制单元包括移相器，用于以预定的角度逐个通道移位每个通道的扩频调制信号的位置矢量的相位。 作为这种相位控制的结果，各通道的扩频调制信号的导频信号部分的相位彼此相对移位，从而可以抑制码复用信号的峰值。

    CDMA receiving apparatus
    7.
    发明授权
    CDMA receiving apparatus 失效
    CDMA接收装置

    公开(公告)号：US06359875B1

    公开(公告)日：2002-03-19

    申请号：US09084830

    申请日：1998-05-26

    申请人： Hajime Hamada ,  Yasuyuki Oishi ,  Hidenobu Fukumasa ,  Koji Matsuyama

    发明人： Hajime Hamada ,  Yasuyuki Oishi ,  Hidenobu Fukumasa ,  Koji Matsuyama

    IPC分类号： H04B7216

    CPC分类号： H04B1/707 ,  H04B2201/70707

    摘要： A CDMA receiving apparatus receives a direct sequence CDMA signal produced through QPSK spreading modulation, performs coherent detection of the direct sequence CDMA signal, and despreads the signals, obtained through the coherent detection, through a despreading portion. The despreading portion comprises a selector portion. The selector portion selects signals as a demodulated and despread in-phase output signal and a demodulated and despread quadrature output signal, in accordance with despreading codes, from demodulated in-phase and quadrature signals obtained through the coherent detection, and an inverted in-phase and quadrature signals obtained as a result of the signs of the demodulated in-phase and quadrature signals being inverted.

    摘要翻译： CDMA接收装置接收通过QPSK扩展调制产生的直接序列CDMA信号，执行直接序列CDMA信号的相干检测，并且通过去扩展部分解调通过相干检测获得的信号。 解扩部分包括选择器部分。 选择器部分根据去扩展码从解调的通过相干检测获得的同相和正交信号中选择信号作为解调和去扩展的同相输出信号和解调和去扩展的正交输出信号，以及反相同相 并且作为被解调的同相和正交信号的符号的结果获得的正交信号被反转。

    WIRELESS COMMUNICATION SYSTEM, TRANSMISSION CHANNEL SELECTION METHOD, AND TRANSMISSION CHANNEL SELECTION PROGRAM
    9.
    发明申请
    WIRELESS COMMUNICATION SYSTEM, TRANSMISSION CHANNEL SELECTION METHOD, AND TRANSMISSION CHANNEL SELECTION PROGRAM 审中-公开
    无线通信系统，传输通道选择方法和传输通道选择程序

    公开(公告)号：US20130244683A1

    公开(公告)日：2013-09-19

    申请号：US13988828

    申请日：2011-11-24

    申请人： Hidenobu Fukumasa ,  Shuichi Takehana ,  Shusaku Fukumoto ,  Shiro Sugahara

    发明人： Hidenobu Fukumasa ,  Shuichi Takehana ,  Shusaku Fukumoto ,  Shiro Sugahara

    IPC分类号： H04W72/08

    CPC分类号： H04W72/085 ,  H04W40/12 ,  H04W48/16 ,  H04W72/02 ,  H04W84/047

    摘要： A transmission channel selection method includes: collects information for calculating evaluation values of each of a plurality of transmission channels, and calculates separate evaluation values of the transmission channels individually with respect to each of a plurality of mobile stations; reduces the number of candidates for the transmission channels with respect to the plurality of mobile stations using the separate evaluation values; collects information for jointly calculating evaluation values of the transmission channels with respect to at least one of the plurality of mobile stations, and calculates the joint-separate evaluation values; and selects the communication paths of the plurality of mobile stations using the separate evaluation values and the joint-separate evaluation values.

    摘要翻译： 传输信道选择方法包括：收集用于计算多个传输信道中的每一个的评估值的信息，并且针对多个移动站中的每一个分别计算传输信道的单独评估值; 使用分离的评估值减少关于多个移动站的传输信道的候选数量; 收集关于所述多个移动台中的至少一个的传输信道的评价值共同计算的信息，并计算所述关联分离的评价值。 并且使用分离的评估值和联合分离的评估值来选择多个移动站的通信路径。

    WIRELESS COMMUNICATION SYSTEM, BASE STATION DEVICE, MOBILE STATION DEVICE, AND WIRELESS COMMUNICATION METHOD
    10.
    发明申请
    WIRELESS COMMUNICATION SYSTEM, BASE STATION DEVICE, MOBILE STATION DEVICE, AND WIRELESS COMMUNICATION METHOD 审中-公开
    无线通信系统，基站设备，移动站设备和无线通信方法

    公开(公告)号：US20120230249A1

    公开(公告)日：2012-09-13

    申请号：US13508634

    申请日：2010-11-10

    申请人： Shusaku Fukumoto ,  Shiro Sugahara ,  Shuichi Takehana ,  Hidenobu Fukumasa

    发明人： Shusaku Fukumoto ,  Shiro Sugahara ,  Shuichi Takehana ,  Hidenobu Fukumasa

    IPC分类号： H04W4/00

    CPC分类号： H04W52/46 ,  H04B7/15535 ,  H04W84/047 ,  H04W88/08

    摘要： A wireless communication system (1) includes a base station (200), one or a plurality of RNs (300) associated with the base station (200), and one or a plurality of mobile stations (100). When the mobile station (100) and the base station (200) communicate without going through the RN (300), the wireless communication system (1) uses a first transmission power control method to control the transmission power of the mobile station (100), and, when the mobile station (100) and the base station (200) communicate via the RN (300), the wireless communication system uses a second transmission power control method to control the transmission power of the mobile station.

    摘要翻译： 无线通信系统（1）包括基站（200），与基站（200）相关联的一个或多个RN（300）以及一个或多个移动台（100）。 当移动站（100）和基站（200）通信而不通过RN（300）时，无线通信系统（1）使用第一发射功率控制方法来控制移动站（100）的发射功率， ，并且当移动台（100）和基站（200）经由RN（300）进行通信时，无线通信系统使用第二发送功率控制方法来控制移动台的发送功率。