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    • 21. 发明申请
    • Frequency-division multiplexing transceiver apparatus, wave-number-division multiplexing transceiver apparatus and method
    • 频分复用收发器设备,波分复用收发器设备和方法
    • US20070217485A1
    • 2007-09-20
    • US11486262
    • 2006-07-13
    • Toshio Kawasaki
    • Toshio Kawasaki
    • H04B1/00
    • H04L5/0044H04B1/707H04J13/0048H04L5/0003H04L5/0007H04L5/0037H04L27/2607H04L27/2626
    • A frequency-division multiplexing transmission apparatus for transmitting data in a frequency spectrum specific to both symbol and mobile station, is disclosed. The apparatus encodes transmission data, modulates the encoded data, compresses the time domains of each symbol of the modulated transmission-symbol sequence, repeats the symbols a specified number of times, rearranges each of the symbols of the obtained repetitive-symbol sequence so that they have the same arrangement as the transmission-symbol sequence, generates each phase that changes at a speed specific to each symbol of the transmission-symbol sequence, performs phase rotation specific to the symbols for each symbol of the rearranged repetitive-symbol sequence, generates phase that changes at a speed specific to a mobile station, performs phase rotation specific to the mobile station for the symbol sequence for which the phase rotation was performed, and transmits the phase-rotated symbol sequence.
    • 公开了一种用于以符号和移动台特有的频谱中的数据发送的频分复用传输装置。 该装置对发送数据进行编码,调制编码数据,压缩调制后的发送符号序列的每个符号的时域,重复符号指定次数,重新排列所获得的重复符号序列的每个符号,使得它们 具有与发送符号序列相同的布置,生成以特定于发送符号序列的每个符号的速度改变的每个相位,执行专用于重新排列的重复符号序列的每个符号的符号的相位旋转,生成相位 以对移动站特有的速度进行变化,对执行相位旋转的符号序列进行特定于移动站的相位旋转,并发送相位旋转的符号序列。
    • 22. 发明申请
    • Communication system, communication method, transmitter and receiver
    • 通信系统,通信方式,发射机和接收机
    • US20070116065A1
    • 2007-05-24
    • US11354464
    • 2006-02-15
    • Toshio Kawasaki
    • Toshio Kawasaki
    • H04J3/06
    • H04L27/205H04L27/2331
    • A transmitter has a mapping unit mapping transmitting symbol data to a plurality of phase amounts, and a phase rotating process unit giving a phase rotation to the transmitting symbol data mapped to the phase amounts to generate a polyphase modulated signal. A receiver has an inter-chip phase difference detecting unit detecting a phase difference between a received signal and a signal received one chip unit time before at each chip unit time, an averaging process unit averaging phase differences detected at respective chip unit times for one symbol time, and an deciding unit deciding an output from the averaging process unit and demodulating the polyphase modulated signal. The symbol error rate can be improved without an error correction circuit.
    • 发射机具有将发送符号数据传送到多个相位量的映射单元,并且向映射到相位量的发送符号数据给出相位旋转的相位旋转处理单元产生多相调制信号。 接收机具有芯片间相位差检测单元,检测接收信号与在每个码片单位时间之前一个码片单位时间接收的信号之间的相位差,平均处理单元对在一个符号的各个码片单位时间检测的相位差进行平均 决定单元决定平均处理单元的输出并解调多相调制信号。 无需纠错电路即可改善符号误码率。
    • 23. 发明申请
    • Frequency-division multiplexing transceive apparatus and method
    • 频分复用收发设备及方法
    • US20070070968A1
    • 2007-03-29
    • US11319377
    • 2005-12-29
    • Toshio Kawasaki
    • Toshio Kawasaki
    • H04B7/208H04B7/216
    • H04B1/69H04L1/08H04L5/06
    • In a frequency-division multiplexing transmitting apparatus for transmitting data at a frequency specific to a mobile station, a symbol compression and repetition unit compresses the time domain of each symbol of a transmit symbol sequence, repeats the symbol a prescribed number of times (L times) and rearranges the symbols of the obtained repetitive symbol sequence in such a manner that the symbols will have an arrangement identical with the arrangement of the transmit symbol sequence; a phase rotating unit applies phase rotation, which varies at a speed specific to the mobile station, to each symbol of the repetitive symbol sequence after the rearrangement thereof; and a transmitting unit transmits the-symbols that have undergone the phase rotation. The phase rotating unit varies the amount of phase rotation, which is applied to each symbol of the repetitive symbols, in increments of k·2π/L (where k represents an integer specific to the mobile station) at the period of the repetitive symbol sequence.
    • 在用于以移动站特有的频率发送数据的频分复用发送装置中,符号压缩和重复单元压缩发送符号序列的每个符号的时域,将符号重复规定次数(L次 )并且以使得符号将具有与发送符号序列的排列相同的布置的方式重新排列所获得的重复符号序列的符号; 相位旋转单元将重新排列后的重复符号序列的每个符号,以移动站特有的速度变化的相位旋转; 并且发送单元发送已经进行相位旋转的符号。 相位旋转单元在重复符号序列的周期以k.2pi / L(其中k表示移动台特有的整数)的增量改变施加到重复符号的每个符号的相位旋转量 。
    • 24. 发明授权
    • Clock generating circuit
    • 时钟发生电路
    • US5838956A
    • 1998-11-17
    • US824364
    • 1997-03-25
    • Toshio KawasakiShigemi Aizawa
    • Toshio KawasakiShigemi Aizawa
    • H03K3/02G06F1/03G06F1/08H03B28/00H03K4/02G06F1/04
    • G06F1/0328G06F1/08G06F2101/04
    • A clock generating circuit which generates a clock signal with a desired frequency. An adder adds a first predetermined value to a previous value stored in flip-flops to create a current value (first value). A subtractor computes the difference between a value obtained by adding a second predetermined value to the first value and a third predetermined value and outputs the resultant difference value as a second value. The first value increases every time a reference clock pulse is input. The resultant values are sent to a memory device via a selector and the flip-flops. When the first value gradually increases and finally exceeds a third predetermined value, the selector selects the second value instead of the first value, where the third predetermined value is set to the maximum address value of the memory device.
    • 一种产生具有期望频率的时钟信号的时钟发生电路。 加法器将第一预定值与存储在触发器中的先前值相加以创建当前值(第一值)。 减法器计算通过将第二预定值与第一值相加而获得的值与第三预定值之间的差,并将所得到的差分值作为第二值输出。 每次输入参考时钟脉冲时,第一个值都会增加。 结果值通过选择器和触发器发送到存储器件。 当第一值逐渐增加并且最终超过第三预定值时,选择器选择第二值而不是第三个预定值被设置为存储器件的最大地址值。
    • 25. 发明授权
    • Transmitter having automatic level control function
    • 变送器具有自动电平控制功能
    • US5625647A
    • 1997-04-29
    • US189166
    • 1994-01-28
    • Toshio Kawasaki
    • Toshio Kawasaki
    • H04B1/04H04L27/08H04L27/20H04L27/36
    • H04L27/366H04L27/08
    • A transmitter having an automatic level control function, which includes a modulator for modulating a carrier by a baseband signal, a variable attenuator for outputting a modulated wave controlled to a certain level, a detector for detecting the modulated wave, and a subtractor for controlling the gain of the variable attenuator in accordance with the difference in level between the detected output level and the reference level and also is provided with an operating unit for applying an operation for matching with the detection characteristic of the detector to the baseband signal for producing the reference level, whereby it is possible to prevent a peak with a large level from occurring at the head of the bursts when transmitting burst signals (modulated waves).
    • 具有自动电平控制功能的发射机,其包括用于通过基带信号调制载波的调制器,用于输出被控制到一定电平的调制波的可变衰减器,用于检测调制波的检测器,以及用于控制所述调制波的减法器 根据检测出的输出电平与参考电平之间的电平差,可变衰减器的增益,并且还具有操作单元,用于将用于与检测器的检测特性匹配的操作用于基带信号以产生参考 电平,由此可以防止在发送突发信号(调制波)时在突发的头部发生大电平的峰值。
    • 26. 发明授权
    • Auxiliary service channel signal transmission system
    • 辅助业务信道信号传输系统
    • US5526343A
    • 1996-06-11
    • US278158
    • 1994-07-21
    • Shigemi AizawaToshio Kawasaki
    • Shigemi AizawaToshio Kawasaki
    • H04B17/00H04J1/16
    • H04J1/16H04B17/0087
    • A transmission system for an auxiliary signal which is extracted from/inserted into a terminal office and for an IF repeater office for digital multiplexing microwave communications. The auxiliary signal transmission system multiplexes the frequencies of primary signals, and performs a communications operation between a terminal office pair and repeater offices that are located between the pair of terminal offices for extraction/insertion of auxiliary signals. In this system, the frequencies of the auxiliary signals are provided in the vacant areas in the frequency bands of the primary signals, and the auxiliary signals are transmitted from the repeater offices in a time-sharing manner.
    • 用于辅助信号的传输系统,其从/插入到终端办公室和IF中继站用于数字多路复用微波通信。 辅助信号传输系统复用主要信号的频率,并且执行位于一对终端机之间的终端办公室与中继站之间的通信操作,用于提取/插入辅助信号。 在该系统中,辅助信号的频率设置在主信号的频带中的空闲区域中,并且辅助信号以分时方式从中继站发送。
    • 27. 发明授权
    • Transmitter and distortion compensating method
    • 发射机和失真补偿方法
    • US08509349B2
    • 2013-08-13
    • US13357504
    • 2012-01-24
    • Kazuo NagataniHiroyoshi IshikawaNobukazu FudabaYuichi UtsunomiyaToshio Kawasaki
    • Kazuo NagataniHiroyoshi IshikawaNobukazu FudabaYuichi UtsunomiyaToshio Kawasaki
    • H04B15/00
    • H04B1/0475H03F1/3247
    • A transmitter, when the power changes at a certain timing, adjusts the gain for the transmission signal before the application of the distortion compensation process correspondingly to the amplitude of the transmission signal at the certain timing based on the average of the power of a transmission signal before application of the distortion compensation process, obtains a distortion compensation coefficient corresponding to the value of the power of the adjusted transmission signal from the LUT, applies the distortion compensation process to the transmission signal using the obtained distortion compensation coefficient, calculates an update for a distortion compensation coefficient corresponding to the obtained distortion compensation coefficient and stored in the LUT based on an error between the power of the transmission signal amplified by an amplifier and the power of the transmission signal before the application of the distortion compensation process, and updates the LUT using the calculated update.
    • 发射机当功率在某一定时变化时,根据传输信号的功率的平均值,在施加失真补偿处理之前调整发送信号的增益,对应于在某个定时的发送信号的幅度 在施加失真补偿处理之前,获得与来自LUT的经调整的发送信号的功率值对应的失真补偿系数,使用所获得的失真补偿系数对发送信号应用失真补偿处理,计算更新 基于由放大器放大的发送信号的功率与施加失真补偿处理之前的发送信号的功率之间的误差,存储在LUT中的失真补偿系数对应于所获得的失真补偿系数,并且更新LUT 使用t 他计算更新。
    • 28. 发明授权
    • Amplifying device and amplifying method
    • 放大装置及放大方法
    • US08427231B2
    • 2013-04-23
    • US13327031
    • 2011-12-15
    • Toshio Kawasaki
    • Toshio Kawasaki
    • H03F3/68
    • H03F1/0294H03F1/3229H03F3/189H03F3/211H03F3/24H03F2201/3215
    • An amplifying device includes a signal separating unit that separates a first signal and a second signal from an input signal; a first signal-generating unit that generates, based on the first signal, a first cancelling signal that suppresses ringing caused during processing of the first signal; a first combining unit that combines the first signal and the first cancelling signal; a first amplifying unit that amplifies a signal output from the first combining unit; a second signal-generating unit that generates, based on the second signal, a second cancelling signal that suppresses ringing caused during processing of the second signal; a second combining unit that combines the second signal and the second cancelling signal; a second amplifying unit that amplifies a signal output from the second combining unit; and a third combining unit that combines a signal output from the first amplifying unit and one output from the second amplifying unit.
    • 放大装置包括信号分离单元,其将第一信号和第二信号与输入信号分离; 第一信号生成单元,其基于所述第一信号生成抑制在所述第一信号的处理期间引起的振铃的第一抵消信号; 组合第一信号和第一消除信号的第一组合单元; 第一放大单元,放大从第一组合单元输出的信号; 第二信号生成单元,其基于所述第二信号生成抑制在所述第二信号的处理期间引起的振铃的第二抵消信号; 组合第二信号和第二消除信号的第二组合单元; 第二放大单元,放大从第二组合单元输出的信号; 以及组合从第一放大单元输出的信号和来自第二放大单元的一个输出的第三组合单元。
    • 29. 发明授权
    • Relay station, relay method, receiving station and receiving method
    • 中继站,中继方式,接收站和接收方式
    • US08355668B2
    • 2013-01-15
    • US12730491
    • 2010-03-24
    • Toshio Kawasaki
    • Toshio Kawasaki
    • H04J3/06H04W4/00H04B3/36H04B7/15H04B1/60
    • H04B7/15528
    • A relay station includes a receiver that receives a signal from a base transceiver station, a detection unit that detects a carrier frequency deviation of the received signal, and a calculation unit that calculates a delay rate of the signal based on the detected carrier frequency deviation. The relay station includes a delay control unit that controls an amount of delay of the signal in accordance with the calculated delay rate, a compensation unit that compensates for the detected carrier frequency deviation of the signal, and a transmitter that transmits the signal of which the amount of delay is controlled and of which the carrier frequency deviation is compensated for.
    • 中继站包括接收来自基站的信号的接收机,检测接收信号的载波频率偏差的检测单元,以及基于检测出的载波频率偏差来计算信号的延迟率的运算单元。 中继站包括:延迟控制单元,其根据计算的延迟率控制信号的延迟量;补偿单元,其补偿检测到的信号的载波频率偏差;以及发送器,其发送信号 控制延迟量,补偿载波频率偏差。
    • 30. 发明授权
    • Wireless communication system, wireless communication method, transmission apparatus, and reception apparatus
    • 无线通信系统,无线通信方法,发送装置和接收装置
    • US08331474B2
    • 2012-12-11
    • US12335988
    • 2008-12-16
    • Toshio Kawasaki
    • Toshio Kawasaki
    • H04B7/02
    • H04B7/06H04B7/0413H04B7/0613H04B7/08
    • The transmission apparatus performs orthogonalization processing to each of the signal sequence obtained by dividing each of the more than one transmission streams into more than one signal sequence based on the orthogonality of wireless resources. The signal sequence is then sent from multiple antennas. The reception apparatus performs the orthogonal separation processing based on the above orthogonality to the received signals to separate multiple reception signal sequence having the orthogonal characteristic, and applies a predetermined signal separation scheme based on the propagation path estimation matrix between the reception apparatus and the transmission apparatus to any one of the pairs of the separated reception signal sequence, thereby separating a signal sequence before subjected to the above orthogonalization processing.
    • 发送装置对通过根据无线资源的正交性将多于一个发送流中的每一个发送到多个信号序列而获得的每个信号序列进行正交化处理。 然后从多个天线发送信号序列。 接收装置基于与接收信号的上述正交性进行正交分离处理,以分离具有正交特性的多个接收信号序列,并且基于接收装置和发送装置之间的传播路径估计矩阵来应用预定的信号分离方案 分离接收信号序列中的任何一对,从而分离在进行上述正交化处理之前的信号序列。