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    • 11. 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。
    • 12. 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。
    • 13. 发明授权
    • Amplifier circuit, transmitter, and method of controlling amplifier circuit
    • 放大器电路,发射器和控制放大器电路的方法
    • US08655292B2
    • 2014-02-18
    • US13328587
    • 2011-12-16
    • Toshio Kawasaki
    • Toshio Kawasaki
    • H01Q11/12
    • H04B1/0475H03F1/0294H03F1/3247H03F3/24
    • A signal separating unit separates an input signal into a first branch signal and a second branch signal in such a manner that, as the amplitude of the input signal decreases, the amplitude of the first branch signal and the second branch signal decreases and the difference between a phase of the first branch signal and a phase of the second branch signal increases and, as the amplitude of the input signal increases, the amplitude of the first branch signal and the second branch signal increases and the difference between the phase of the first branch signal and the phase of the second branch signal decreases. An amplifier amplifies the first branch signal. Another amplifier amplifies the second branch signal. A combining unit combines signals that are output from the amplifiers together, thereby generating an output signal.
    • 信号分离单元将输入信号分离为第一分支信号和第二分支信号,使得随着输入信号的幅度减小,第一分支信号和第二分支信号的幅度减小, 第一分支信号的相位和第二分支信号的相位增加,并且随着输入信号的幅度增加,第一分支信号和第二分支信号的振幅增加,并且第一分支的相位之间的差异 信号和第二分支信号的相位减小。 放大器放大第一分支信号。 另一个放大器放大第二分支信号。 组合单元将从放大器输出的信号组合在一起,从而产生输出信号。
    • 14. 发明授权
    • Wireless communication method and relay apparatus
    • 无线通信方法和中继设备
    • US08483607B2
    • 2013-07-09
    • US12852949
    • 2010-08-09
    • Toshio Kawasaki
    • Toshio Kawasaki
    • H04B7/15
    • H04B7/15528H04B7/15592H04B7/2606
    • A wireless communication method executed by a wireless communication system including a relay apparatus, a first wireless communication apparatus, and a second wireless communication apparatus includes the following operations. Upon receiving a wireless signal from the first wireless communication apparatus, the relay apparatus adds advice information, which indicates that the wireless signal has been relayed, to the received wireless signal. The relay apparatus transmits the wireless signal added the advice information thereto to the second wireless communication apparatus. The second wireless communication apparatus detects the advice information to determine whether the wireless signal has been relayed.
    • 由包括中继设备,第一无线通信设备和第二无线通信设备的无线通信系统执行的无线通信方法包括以下操作。 在从第一无线通信装置接收到无线信号时,中继装置将指示无线信号已被中继的建议信息添加到所接收的无线信号。 中继装置向第二无线通信装置发送添加了建议信息的无线信号。 第二无线通信装置检测建议信息以确定无线信号是否已被中继。
    • 15. 发明申请
    • AMPLIFIER CIRCUIT, TRANSMITTER, AND METHOD OF CONTROLLING AMPLIFIER CIRCUIT
    • 放大器电路,发射器和控制放大器电路的方法
    • US20120214432A1
    • 2012-08-23
    • US13328587
    • 2011-12-16
    • Toshio KAWASAKI
    • Toshio KAWASAKI
    • H04B1/04H03F3/68
    • H04B1/0475H03F1/0294H03F1/3247H03F3/24
    • A signal separating unit separates an input signal into a first branch signal and a second branch signal in such a manner that, as the amplitude of the input signal decreases, the amplitude of the first branch signal and the second branch signal decreases and the difference between a phase of the first branch signal and a phase of the second branch signal increases and, as the amplitude of the input signal increases, the amplitude of the first branch signal and the second branch signal increases and the difference between the phase of the first branch signal and the phase of the second branch signal decreases. An amplifier amplifies the first branch signal. Another amplifier amplifies the second branch signal. A combining unit combines signals that are output from the amplifiers together, thereby generating an output signal.
    • 信号分离单元将输入信号分离为第一分支信号和第二分支信号,使得随着输入信号的幅度减小,第一分支信号和第二分支信号的幅度减小, 第一分支信号的相位和第二分支信号的相位增加,并且随着输入信号的幅度增加,第一分支信号和第二分支信号的振幅增加,并且第一分支的相位之间的差异 信号和第二分支信号的相位减小。 放大器放大第一分支信号。 另一个放大器放大第二分支信号。 组合单元将从放大器输出的信号组合在一起,从而产生输出信号。
    • 17. 发明授权
    • Frequency-division multiplexing transceiver apparatus, wave-number-division multiplexing transceiver apparatus and method thereof
    • 频分复用收发装置,波分复用收发装置及其方法
    • US07873096B2
    • 2011-01-18
    • US12616238
    • 2009-11-11
    • 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。
    • 18. 发明授权
    • Frequency-division multiplexing transceiver apparatus and method
    • 频分复用收发机设备及方法
    • US07630454B2
    • 2009-12-08
    • US11476694
    • 2006-06-29
    • Toshio Kawasaki
    • Toshio Kawasaki
    • H04L27/00
    • H04B1/692H04B1/7097H04B2201/70706
    • In a frequency-division multiplexing transmission apparatus for transmitting data in a frequency spectrum specific to a mobile station, a chip-dividing unit divides each symbol of a transmission-symbol sequence into chips; a first phase rotation unit performs π/2 phase rotation for the odd-numbered chips of the divided chips; a chip-repetition and rearrangement unit compresses the time domains of each chip of the chip sequence after phase rotation, then repeats the chips a specified number of times and rearranges the chips of the obtained repetitive-chip sequences so that they have the same arrangement as the original chip sequence; a second phase rotation unit performs phase rotation that changes at a speed specific to a mobile station for each chip of the rearranged repetitive-chip sequence; and a transmission unit transmits said phase-rotated chips.
    • 在用于以特定于移动台的频谱中发送数据的频分复用发送装置中,芯片分割单元将发送符号序列的每个符号划分成码片; 第一相位旋转单元对分割的芯片的奇数芯片执行π/ 2相位旋转; 芯片重复和重排单元在相位旋转之后压缩芯片序列的每个芯片的时域,然后将芯片重复指定次数,并重新排列所获得的重复码片序列的码片,使得它们具有与 原始芯片序列; 第二相位旋转单元执行以重排列重复码片序列的每个码片为特定于移动台的速度改变的相位旋转; 并且发送单元发送所述相位旋转的码片。
    • 19. 发明申请
    • Frequency-division multiplexing transceiver apparatus and method
    • 频分复用收发机设备及方法
    • US20070189415A1
    • 2007-08-16
    • US11476694
    • 2006-06-29
    • Toshio Kawasaki
    • Toshio Kawasaki
    • H04L27/00
    • H04B1/692H04B1/7097H04B2201/70706
    • In a frequency-division multiplexing transmission apparatus for transmitting data in a frequency spectrum specific to a mobile station, a chip-dividing unit divides each symbol of a transmission-symbol sequence into chips; a first phase rotation unit performs π/2 phase rotation for the odd-numbered chips of the divided chips; a chip-repetition and rearrangement unit compresses the time domains of each chip of the chip sequence after phase rotation, then repeats the chips a specified number of times and rearranges the chips of the obtained repetitive-chip sequences so that they have the same arrangement as the original chip sequence; a second phase rotation unit performs phase rotation that changes at a speed specific to a mobile station for each chip of the rearranged repetitive-chip sequence; and a transmission unit transmits said phase-rotated chips.
    • 在用于以特定于移动台的频谱中发送数据的频分复用发送装置中,芯片分割单元将发送符号序列的每个符号划分成码片; 第一相位旋转单元对分割的芯片的奇数芯片执行π/ 2相位旋转; 芯片重复和重排单元在相位旋转之后压缩芯片序列的每个芯片的时域,然后将芯片重复指定次数,并重新排列所获得的重复码片序列的码片,使得它们具有与 原始芯片序列; 第二相位旋转单元执行以重排列重复码片序列的每个码片为特定于移动站的速度改变的相位旋转; 并且发送单元发送所述相位旋转的码片。
    • 20. 发明申请
    • Frequency-division multiplexing transceiver apparatus and method
    • 频分复用收发机设备及方法
    • US20070189414A1
    • 2007-08-16
    • US11452964
    • 2006-06-15
    • Toshio Kawasaki
    • Toshio Kawasaki
    • H04L27/00
    • H04L27/2621H04L5/023
    • A frequency-division multiplexing transmission apparatus that transmits data at a frequency spectrum specific to a mobile station in which a π/4-continuous-phase-rotation unit performs phase rotation that increases in increments of π/4 or decreases in decrements of −π/4 for each symbol of a transmission-symbol sequence; a symbol-repetition and rearrangement unit compresses the time domains of each symbol of the transmission-symbol sequence after phase rotation, then repeats those symbols a specified number of times (L times), and rearranges the symbols of the obtained repetitive-symbol sequence so that it has the same arrangement as the original transmission-symbol sequence; a phase-rotation unit performs phase rotation that changes at a speed specific to the mobile station for each symbol of the rearranged repetitive-symbol sequence; and a transmission unit transmits the phase-rotated symbols.
    • 一种频分复用传输装置,以对pi / 4连续相位旋转单元执行以pi / 4为增量增加的相位旋转或者-pi减小的移动台的特定频谱发送数据 / 4,用于发送符号序列的每个符号; 符号重复和重排单元在相位旋转后压缩发送符号序列的每个符号的时域,然后将这些符号重复指定次数(L次),并重新排列所获得的重复符号序列的符号 它具有与原始传输符号序列相同的布置; 相位旋转单元执行相对于所述重排符号序列的每个符号以针对移动台的特定速度改变的相位旋转; 并且发送单元发送相位旋转符号。