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    • 1. 发明申请
    • Transmission method
    • 传输方式
    • US20080225927A1
    • 2008-09-18
    • US12148084
    • 2008-04-15
    • Noriaki MiyazakiToshinori SuzukiFumio Watanabe
    • Noriaki MiyazakiToshinori SuzukiFumio Watanabe
    • H04B1/707H04L27/10
    • H04J13/12H04J11/00H04J13/004H04L5/0021H04L27/206H04L27/2626
    • In a transmission method of the present invention, when transmitting an information bit from a transmitter to a receiver, an encoder of the transmitter firstly inputs and encodes the information bit, and a modulator then modulates the encoded information bit to create a modulation symbol. A spreader spreads the obtained modulation symbol using a rotation orthogonal code having a rotation angle that is appropriate to a combination of the modulation method and the coding rate, and transmits it to a transmission path. The receiver performs a reverse operation of the transmitter, and decodes the information bit. In QPSK modulation where the coding rate of an error-correction code is ½, when a rotation angle that obtains a same signal point as OFDM is 0°, spreading is performed using a rotation orthogonal code having a rotation angle of between 17° and 45°, or between −17° and −45°, thereby reducing bit error and enabling highly-reliable communication to be achieved.
    • 在本发明的传输方法中,当从发射机向接收机发送信息比特时,发射机的编码器首先对信息比特进行编码,然后调制编码的信息比特以产生调制符号。 扩展器使用具有适于调制方法和编码率的组合的旋转角度的旋转正交码扩展获得的调制符号,并将其发送到传输路径。 接收机执行发射机的反向操作,并对信息位进行解码。 在纠错码的编码率为1/2的QPSK调制中,当获得与OFDM相同的信号点的旋转角为0°时,使用旋转角度为17°〜45°的旋转正交码进行扩频 °或-17°至-45°之间,从而减少位误差并实现高度可靠的通信。
    • 2. 发明授权
    • Transmitter and receiver
    • 发射机和接收机
    • US07317747B2
    • 2008-01-08
    • US10780591
    • 2004-02-17
    • Noriaki MiyazakiToshinori Suzuki
    • Noriaki MiyazakiToshinori Suzuki
    • H04L27/00
    • H04B1/7097H04B2201/70701
    • A receiver informs a delay profile and CIR measured in an FDE or a Rake receiver, together with a bit error rate of a received signal that is required in a receiver, as quality information to a transmitter. In the transmitter, based on the delay profile and CIR contained in the notified quality information, a number of code division multiplex and a frame format are decided in a decision circuit such that a bit error rate of a received signal, which is necessary on the receiver side, can be obtained. In addition, a transmission selection switch selects one of a unique word insertion unit and a cyclic prefix insertion unit that create a frame format for FDE reception and a pilot insertion unit and a complex scrambling unit that create a frame format for Rake reception, and data is then transmitted.
    • 接收机将在FDE或Rake接收机中测量的延迟分布和CIR以及接收机中所需的接收信号的误码率作为向发射机的质量信息通知。 在发送机中,基于所通知的质量信息中包含的延迟分布和CIR,在判定电路中判定多个码分多路复用和帧格式,使得接收信号的误码率在 接收端,可以得到。 此外,发送选择开关选择创建FDE接收的帧格式的唯一字插入单元和循环前缀插入单元之一,以及创建Rake接收的帧格式的导频插入单元和复数加扰单元,以及数据 然后传输。
    • 10. 发明授权
    • Mobile communication system
    • 移动通信系统
    • US06351649B1
    • 2002-02-26
    • US09276660
    • 1999-03-26
    • Fumio WatanabeYoshio TakeuchiToshinori SuzukiHisato IwaiAkira Yamaguchi
    • Fumio WatanabeYoshio TakeuchiToshinori SuzukiHisato IwaiAkira Yamaguchi
    • H04B701
    • H04W52/242H04B17/318H04B17/345H04W16/14H04W52/146H04W88/06
    • A mobile communication system includes a first and second systems. Each of the first and second systems has a land station and at least one mobile terminal capable of communicating with the land station. The land station of the first system has a broadcasting channel transmission unit for transmitting status information via a broadcasting channel, and the mobile terminal of the second system has a broadcasting channel receiving unit for receiving information in the broadcasting channel to obtain a broadcasting channel receiving condition and the status information, a giving interference estimation unit for estimating giving interference level onto communication of the first system by the second system based upon the obtained broadcasting channel receiving condition and the obtained status information, and an output signal level control unit for controlling output signal level of the mobile terminal of the second system based upon the estimated giving interference level.
    • 移动通信系统包括第一和第二系统。 第一和第二系统中的每一个具有陆地站和能够与地面站通信的至少一个移动终端。 第一系统的地面站具有用于经由广播信道发送状态信息的广播频道传输单元,并且第二系统的移动终端具有广播频道接收单元,用于在广播频道中接收信息以获得广播频道接收条件 状态信息,基于所获得的广播信道接收条件和所获得的状态信息,估计由第二系统对第一系统的通信给出干扰电平的给出干扰估计单元,以及用于控制输出信号的输出信号电平控制单元 基于所估计的给定干扰电平,第二系统的移动终端的电平。