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    • 2. 发明授权
    • Method and circuit for detecting burst signal
    • 检测突发信号的方法和电路
    • US5457710A
    • 1995-10-10
    • US962116
    • 1992-10-16
    • Tokihiro MiyoMitsuhiro OnoToshio Kawasaki
    • Tokihiro MiyoMitsuhiro OnoToshio Kawasaki
    • H04L27/00H04L27/22H04L27/06
    • H04L27/22H04L27/0012
    • A phase angle .theta. of a received signal is calculated according to a formula .theta.=tan.sup.-1 (Q/I), where I and Q are magnitudes of baseband signals obtained by quadrature detection of the received signal. An angular velocity .DELTA..theta. of the phase angle .theta. is also calculated. A variance parameter .SIGMA..sigma..sup.2 is calculated from a deviation .sigma.=.DELTA..theta.-.DELTA..theta., where .DELTA..theta. is a moving average of the .DELTA..theta.. The variance parameter .SIGMA..sigma..sup.2 thus calculated, is compared with a reference value to determine if a burst signal exists. Since the determination is performed essentially based on a phase of the received signal and not on an amplitude of the received signal, fluctuation of the amplitude of the received signal does not affect the decision.
    • 根据公式θ= tan-1(Q / I)计算接收信号的相角θ,其中I和Q是通过接收信号的正交检测获得的基带信号的幅度。 也计算出相角θ的角速度ΔTATA。 方差参数SIGMA西格玛2由偏差σ=DELTAθ-DELTAθ计算,其中DELTAθ是DELTAθ的移动平均值。 将如此计算的方差参数SIGMA sigma 2与参考值进行比较,以确定是否存在突发信号。 由于基于接收信号的相位而不是接收信号的振幅来执行确定,所以接收信号的振幅的波动不影响该决定。
    • 3. 发明授权
    • Antenna installation method in a multiple input multiple output communication method
    • 天线安装方法在多输入多输出通信方式
    • US08503951B2
    • 2013-08-06
    • US12704501
    • 2010-02-11
    • Toshio Kawasaki
    • Toshio Kawasaki
    • H04B1/02H04B1/06
    • H04B7/04H01Q21/28H04B7/0413Y10T29/49016
    • A communication system includes a first communication apparatus and a second communication apparatus. The second communication apparatus transmits different signals from first and second antennas, and first and second antennas of the first communication apparatus receive the signals, respectively. An angle formed by a first line connecting the first communication apparatus and the first antenna of the second communication apparatus and a second line connecting the first communication apparatus and the second antenna of the second communication apparatus is set to be equal to or smaller than 180 degrees. A distance between the first and second antennas of the first communication apparatus is set to a specified value, which is determined by a signal wavelength and the angle formed by the first line and the second line.
    • 通信系统包括第一通信装置和第二通信装置。 第二通信装置从第一和第二天线发送不同的信号,第一通信装置的第一和第二天线分别接收信号。 由连接第一通信装置的第一线和第二通信装置的第一天线形成的角度和连接第二通信装置的第一通信装置和第二天线的第二线路之间的角度被设定为等于或小于180度 。 将第一通信装置的第一和第二天线之间的距离设置为由信号波长和由第一线和第二线形成的角度确定的指定值。
    • 4. 发明申请
    • MOBILE STATION, BASE STATION, AND WIRELESS COMMUNICATION METHOD
    • 移动站,基站和无线通信方法
    • US20110189972A1
    • 2011-08-04
    • US13015948
    • 2011-01-28
    • Tomonori SatoToshio Kawasaki
    • Tomonori SatoToshio Kawasaki
    • H04M11/04
    • H04W74/008H04W4/90H04W28/02H04W74/0833H04W76/50
    • A mobile station that performs wireless communication through a base station, includes a first connection setup request unit configured to make a first connection setup request for an emergency call and a normal call when communication performed in the communication region of the base station is in a congestion state, the emergency call and the normal call using a signal sequence that corresponds to a sequence number of a connection setup request signal used when communication performed in a communication region of the base station is in a normal state, and a second connection setup request unit configured to make a second connection setup request for another one of the emergency call and the normal call different from the first connection setup request, using a generated-signal sequence generated from the sequence number, when communication performed in the communication region of the base station is in the congestion state.
    • 通过基站执行无线通信的移动台包括第一连接建立请求单元,被配置为当在基站的通信区域中执行的通信处于拥塞时进行紧急呼叫和正常呼叫的第一连接建立请求 状态,紧急呼叫和使用与在基站的通信区域中执行的通信时所使用的连接建立请求信号的序列号相对应的信号序列的正常呼叫处于正常状态,以及第二连接建立请求单元 被配置为当在所述基站的通信区域中执行的通信时,使用从所述序列号生成的生成信号序列,对与所述第一连接建立请求不同的所述紧急呼叫和所述正常呼叫中的另一个进行第二连接建立请求 处于拥挤状态。
    • 5. 发明申请
    • FREQUENCY CONTROL DEVICE, FREQUENCY CONTROL METHOD, AND BASE TRANSCEIVER STATION
    • 频率控制装置,频率控制方法和基站收发站
    • US20100248743A1
    • 2010-09-30
    • US12728418
    • 2010-03-22
    • Toshio Kawasaki
    • Toshio Kawasaki
    • H04W64/00
    • H04B7/01H04L27/0014
    • A frequency control device receiving a signal transmitted from each of a plurality of mobile stations, the frequency control device includes a first detecting unit to detect a frequency deviation generated from the signal, a second detecting unit to acquire information about at least a current position or movement of each of the mobile stations as classification information, and a classifying unit to classify mobile stations estimated to be moving in a same moving direction with a same moving speed as a first mobile station based on the classification information. The frequency control device includes a first calculating unit to calculate a first frequency deviations of a signal received from the first mobile station, and a compensation unit to compensate the frequency deviation of the signal received from the first mobile station based on the first frequency deviation.
    • 一种频率控制装置,接收从多个移动站中的每一个发送的信号,所述频率控制装置包括检测从所述信号产生的频率偏差的第一检测单元,第二检测单元,获取关于至少当前位置的信息, 每个移动站的移动作为分类信息,以及分类单元,用于基于分类信息,以与第一移动站相同的移动速度将估计移动的移动站以相同的移动方向进行分类。 频率控制装置包括:第一计算单元,计算从第一移动站接收的信号的第一频率偏差;以及补偿单元,用于基于第一频率偏差补偿从第一移动站接收的信号的频率偏差。
    • 6. 发明授权
    • Calibration apparatus
    • 校准装置
    • US07340248B2
    • 2008-03-04
    • US11188379
    • 2005-07-25
    • Toshio KawasakiChiyoshi AkiyamaTomonori Sato
    • Toshio KawasakiChiyoshi AkiyamaTomonori Sato
    • H04Q7/20
    • H01Q3/267H04B7/0615H04B7/0842H04B17/10H04B17/21
    • In a calibration apparatus, which calibrates the phases of main signals input to each of the antenna elements of an array antenna, a calibration signal generation portion generates calibration signals, which are combined with main signals. An RF switch alternately inputs to a wireless receiving portion the signals radiated from other antenna elements via a first antenna element, and the signals radiated from other antenna elements via a second antenna element, and causes demodulation. The calibration detection portion detects calibration signals from the demodulated signals, and the weight generation portion uses the detected calibration signals to calculate calibration weights, which are set in the phase shifter, to control the phases of main signals for input to each antenna element.
    • 在校准装置中,校准输入到阵列天线的每个天线元件的主信号的相位,校准信号产生部分产生与主信号相组合的校准信号。 RF开关经由第一天线元件交替地向无线接收部分输入从其他天线元件辐射的信号,以及经由第二天线元件从其他天线元件辐射的信号,并且引起解调。 校准检测部分从解调信号中检测校准信号,并且权重产生部分使用检测到的校准信号来计算在移相器中设置的校准权重,以控制用于输入到每个天线元件的主信号的相位。
    • 7. 发明申请
    • Communications system, transmitter, receiver, and communications method thereof
    • 通信系统,发射机,接收机及其通信方法
    • US20070274201A1
    • 2007-11-29
    • US11802987
    • 2007-05-29
    • Toshio Kawasaki
    • Toshio Kawasaki
    • H04J11/00H03K5/159H04K1/10H04J1/00
    • H04L27/2614
    • Sample signals P0(0) to P0(N−1) are input for each symbol of a multiplexed transmission sample or transmission chip. The sum of a particular pair of sample signals (for example, a pair of P0(0) and P0(N/2)) is obtained by an adder for each pair of sample signals, and a signal the power of which is halved by attenuating the sum with an attenuator is generated and output as a dispersion signal P1(N/2). Additionally, a difference between the pair of the sample signals is obtained by a subtractor, and a signal the power of which is halved by attenuating the difference with an attenuator is generated and output as a dispersion signal P1(0). The dispersion signals P1(0) and P1(N/2) are made to respectively correspond to first and second subsymbols, which are configured by partitioning the symbol.
    • 针对多路传输采样或传输芯片的每个符号输入采样信号P 0(0)至P 0(N-1)。 通过加法器为每对采样信号获得特定的一对采样信号(例如,一对P 0(0)和P 0(N / 2))的和,并且其功率为 产生通过用衰减器衰减和减半,并作为色散信号P 1(N / 2)输出。 此外,通过减法器获得一对采样信号之间的差异,并且产生通过衰减与衰减器的差来减弱其功率的信号,并将其输出作为色散信号P 1(0)输出。 分散信号P 1(0)和P 1(N / 2)分别对应于通过划分符号来配置的第一和第二子符号。
    • 9. 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。
    • 10. 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。