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312 条记录 (耗时 0.034 秒)

    Adaptive modulation scheme and data rate control method
    21.
    发明授权
    Adaptive modulation scheme and data rate control method 有权
    自适应调制方案和数据速率控制方法

    公开(公告)号：US07801236B2

    公开(公告)日：2010-09-21

    申请号：US11028938

    申请日：2005-01-05

    申请人： Satoshi Tamaki ,  Takashi Yano ,  Toshiyuki Saito ,  Seishi Hanaoka

    发明人： Satoshi Tamaki ,  Takashi Yano ,  Toshiyuki Saito ,  Seishi Hanaoka

    IPC分类号： H04B7/02

    CPC分类号： H04L1/0009 ,  H04L1/0003 ,  H04L1/0021 ,  H04L5/0046 ,  H04L5/006 ,  H04L27/0008

    摘要： A transmitter station and receiver station have common maximum number of transmission bits per symbol of each subcarrier and information of encoding types to be selected. The transmitter station selects the modulation type from the propagation path quality of each subcarrier, executes encoding with the encoding type corresponding to the number of bits for communication with the selected modulation type, distributes the maximum number of transmission bits per symbol of each subcarrier by dividing the code, and transmits the data through modulation of only the number of bits for communication with the selected modulation type among distributed bits in each subcarrier. The receiver station executes demodulation by selecting the modulation type used for demodulation from the propagation path quality, summarizes the demodulation result with addition of reception of the signal having a zero degree of likeliness for the number of wanted bits, and executes decoding to the result of demodulation.

    摘要翻译： 发射机站和接收站具有每个子载波的每个符号的公共最大传输比特数和要选择的编码类型的信息。 发射机站根据每个子载波的传播路径质量选择调制类型，以与用于与选择的调制类型进行通信的比特数对应的编码类型执行编码，通过划分每个子​​载波的每个码元的最大传输比特数 代码，并且通过仅调制每个子载波中的分布位中的与选择的调制类型通信的比特数来发送数据。 接收站通过从传播路径质量中选择用于解调的调制类型来执行解调，通过添加对所需位数的零度可能性的信号的接收来总结解调结果，并执行解码结果 解调。

    Transmission power control method for a wireless communication system
    22.
    发明授权
    Transmission power control method for a wireless communication system 有权
    一种用于无线通信系统的发射功率控制方法

    公开(公告)号：US07769081B2

    公开(公告)日：2010-08-03

    申请号：US11896082

    申请日：2007-08-30

    申请人： Takashi Yano ,  Satoshi Tamaki

    发明人： Takashi Yano ,  Satoshi Tamaki

    IPC分类号： H04B17/02 ,  H04Q7/20

    CPC分类号： H04W52/243 ,  H04W52/242 ,  H04W52/247 ,  H04W52/50

    摘要： Transmission power relative to a propagation path having a variation in gain is controlled to increase communication channel capacity, and a data rate is controlled in accordance with the variation of the increased communication channel capacity. In order to increase the communication channel capacity, the transmission power is determined so that the sum of noise power (=received noise power/propagation path gain) converted into one at a transmitter and the transmission power becomes constant. As a result, contrary to the background art, the transmission power is controlled to be reduced when the propagation path gain decreases and to be increased when the propagation path gain increases.

    摘要翻译： 控制相对于具有增益变化的传播路径的传输功率以增加通信信道容量，并且根据增加的通信信道容量的变化来控制数据速率。 为了增加通信信道容量，确定发送功率，使得在发射机处转换为一个的发送功率和发送功率的噪声功率（=接收噪声功率/传播路径增益）之和变得恒定。 结果，与背景技术相反，当传播路径增益减小时，传输功率被控制为减小，并且当传播路径增益增加时传输功率被增加。

    TRANSMISSION POWER CONTROL METHOD AND APPARATUS FOR MOBILE COMMUNICATION SYSTEM
    23.
    发明申请
    TRANSMISSION POWER CONTROL METHOD AND APPARATUS FOR MOBILE COMMUNICATION SYSTEM 审中-公开
    用于移动通信系统的传输功率控制方法和装置

    公开(公告)号：US20090005106A1

    公开(公告)日：2009-01-01

    申请号：US12198913

    申请日：2008-08-27

    申请人： Riaz Esmailzadeh ,  Takashi Yano ,  Nobukazu Doi

    发明人： Riaz Esmailzadeh ,  Takashi Yano ,  Nobukazu Doi

    IPC分类号： H04B7/00

    CPC分类号： H04W52/24 ,  H04W52/362

    摘要： A method and apparatus for controlling the power of a signal transmitted between a base station and a mobile terminal which constitute a mobile communication system. At least one of the base station and the mobile terminal has functions to compare a predetermined reference value and a necessary transmission power obtained as a result of transmission power control in order to compensate for a signal intensity fluctuation occurring on a link between the base station and the mobile terminal, temporarily stopping the transmission if the necessary transmission power is larger than a predetermined permissible value, and transmit the signal if the necessary transmission power is equal to or smaller than the predetermined permissible value.

    摘要翻译： 一种用于控制在构成移动通信系统的基站和移动终端之间传输的信号的功率的方法和装置。 基站和移动终端中的至少一个具有将预定参考值和作为发送功率控制的结果获得的必要发送功率进行比较的功能，以便补偿基站与基站之间的链路上发生的信号强度波动 如果必要的发送功率大于预定的允许值，则暂时停止发送，并且如果必要的发送功率等于或小于预定的允许值则发送该信号。

    Data transmission method for a mobile communication system
    26.
    发明授权
    Data transmission method for a mobile communication system 有权
    移动通信系统的数据传输方法

    公开(公告)号：US07356004B2

    公开(公告)日：2008-04-08

    申请号：US10636696

    申请日：2003-08-08

    申请人： Takashi Yano ,  Satoshi Tamaki ,  Seishi Hanaoka ,  Takeshi Kato

    发明人： Takashi Yano ,  Satoshi Tamaki ,  Seishi Hanaoka ,  Takeshi Kato

    IPC分类号： H04Q7/00 ,  H04B7/08 ,  H04M1/00

    CPC分类号： H04B7/0617 ,  H04B7/0615 ,  H04B7/0669 ,  H04B7/0848 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/005 ,  H04L1/0061 ,  H04L1/0066 ,  H04L1/06 ,  H04L1/16 ,  H04L1/1845 ,  H04L2001/0096 ,  H04W16/28

    摘要： This invention provides a mobile communication system which expanded the operation limitation of the heretofore adopted mobile communication systems and improved the spectrum efficiency greatly. A data transmission method for use in the mobile communication system of the present invention includes means for channel pluralizing by which to expand the Shannon limit and means for interference reduction by which to expand the interference limit. More specifically, a transmitting module comprises M units of modulators and L units of transmitting antennas, generates L units of signals by multiplying M units of modulated signals by a complex matrix consisting of M×L units of elements, and transmits the L units of signals from the L units of transmitting antennas.

    摘要翻译： 本发明提供一种移动通信系统，其扩展了迄今采用的移动通信系统的操作限制，并大大提高了频谱效率。 在本发明的移动通信系统中使用的数据传输方法包括用于扩展香农限制的信道多路化装置和用于扩大干扰限制的干扰减少装置。 更具体地，发送模块包括M个调制器和L个发送天线单元，通过将M个调制信号乘以由MxL个单元组成的复数矩阵，生成L个单位的信号，并将来自 L单位发射天线。

    Code division multiple access mobile communication system
    28.
    发明授权
    Code division multiple access mobile communication system 失效
    码分多址移动通信系统

    公开(公告)号：US07336697B2

    公开(公告)日：2008-02-26

    申请号：US10786092

    申请日：2004-02-26

    申请人： Yasuo Ohgoshi ,  Takashi Yano ,  Nobukazu Doi

    发明人： Yasuo Ohgoshi ,  Takashi Yano ,  Nobukazu Doi

    IPC分类号： H04B1/00

    CPC分类号： H04B1/707 ,  H04B7/2628

    摘要： A code division multiple access (CDMA) mobile communication system with improvements to permit stable reception with a minimum of bit error. The system includes a base station and a mobile station for communicating with the base station. The mobile station includes an oscillator, a radio frequency demodulator for demodulating a radio frequency band signal received from the base station by use of a first signal from the oscillator, a radio frequency modulator for modulating a second signal to be transmitted by use of the first signal from the oscillator, and an antenna for receiving the radio frequency band signal transmitted from the base station, and for transmitting the modulated second signal to the base station. An oscillation frequency of the oscillator is controlled by use of a change of phase shift detected using the demodulated radio frequency band signal received from the base station.

    摘要翻译： 具有改进的码分多址（CDMA）移动通信系统，以允许以最小的位错误的稳定的接收。 该系统包括用于与基站通信的基站和移动站。 移动台包括振荡器，用于通过使用来自振荡器的第一信号来解调从基站接收的无线电频带信号的射频解调器，用于通过使用第一信号调制要发送的第二信号的射频调制器 来自振荡器的信号，以及用于接收从基站发送的射频信号的天线，并用于将调制的第二信号发送到基站。 通过使用从基站接收的解调的无线电频带信号检测到的相移的变化来控制振荡器的振荡频率。

    Access point apparatus for a system for determining the location of a terminal and a terminal location determining method
    30.
    发明授权
    Access point apparatus for a system for determining the location of a terminal and a terminal location determining method 失效
    用于确定终端的位置的系统的接入点装置和终端位置确定方法

    公开(公告)号：US07280521B2

    公开(公告)日：2007-10-09

    申请号：US10790005

    申请日：2004-03-02

    申请人： Katsuhiko Tsunehara ,  Takashi Yano

    发明人： Katsuhiko Tsunehara ,  Takashi Yano

    IPC分类号： H04Q7/24

    CPC分类号： H04W64/00 ,  G01S5/0221 ,  H04W88/08

    摘要： In an access point apparatus for a wireless LAN system equipped with a terminal location detecting function, memory capacity required for the access point apparatus is reduced. A received signal memory control module controls access such that a memory space of a received signal memory can be reused by performing sequentially overwrite operation while stopping capturing of the received signal in response to a packet detection signal outputted from a packet detecting module.

    摘要翻译： 在具有终端位置检测功能的无线LAN系统的接入点装置中，减少了接入点设备所需的存储器容量。 接收到的信号存储器控制模块控制接入，使得响应于从分组检测模块输出的分组检测信号，停止接收信号的捕获，通过执行顺序重写操作，可以重新使用接收信号存储器的存储器空间。