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1. 发明授权

US4701935A One frequency repeater for a digital microwave radio system with cancellation of transmitter-to-receiver interference 失效
标题翻译：用于数字微波无线电系统的一个频率转发器，具有取消发射机到接收机干扰的功能
公开(公告)号：US4701935A
公开(公告)日：1987-10-20
申请号：US817380
申请日：1986-01-09
申请人： Junji Namiki
发明人： Junji Namiki
IPC分类号： H04B7/155 , H04B7/15
CPC分类号： H04B7/15585
摘要： A digital microwave radio repeater using the same carrier frequency for the transmitter and the receiver carriers for improving the frequency utilization efficiency. The transmitter-to-receiver interference signal is cancelled by producing an estimated-interference signal of the interference signal from the digital baseband signal by the use of a transversal filter and by subtracting the estimated-interference signal from the received signal. The estimated-interference signal is also produced by frequency shifting a digital modulated signal in the transmitter. The transmitter carrier frequency is locked to the receiver carrier frequency by the use of a phase-locking technique, so that the interference signal is reduced.
摘要翻译：一种使用相同载波频率的数字微波无线电中继器，用于发射机和接收机载波，以提高频率利用效率。通过使用横向滤波器产生来自数字基带信号的干扰信号的估计干扰信号并从接收信号中减去估计干扰信号来消除发射机到接收机干扰信号。估计的干扰信号也是通过对发射机中的数字调制信号进行频移来产生的。发射机载波频率通过使用锁相技术锁定到接收机载波频率，从而降低干扰信号。

2. 发明授权

US4497067A Interference cancellation type space diversity system 失效
标题翻译：干扰消除型空间分集系统
公开(公告)号：US4497067A
公开(公告)日：1985-01-29
申请号：US512705
申请日：1983-07-11
申请人： Junji Namiki
发明人： Junji Namiki
IPC分类号： H04B1/12 , H04L1/06 , H04B7/08
CPC分类号： H04L1/06 , H04B1/126
摘要： An interference cancellation type space diversity system transmits digital microwaves in a sure and stable manner. Signals coming in through two spaced antennas are combined together into a single input signal and the composite signal is processed by a demodulator into a baseband signal which is identical with a transmitted signal. The demodulated baseband signal is processed by a frequency/amplitude characteristic detector network, which comprises a correlation circuit and an identification circuit, thereby controlling output phases of the antennas.
摘要翻译：干扰消除型空间分集系统以可靠稳定的方式传输数字微波。通过两个隔开的天线进入的信号被组合成单个输入信号，并且复合信号由解调器处理成与传输信号相同的基带信号。解调的基带信号由包括相关电路和识别电路的频率/幅度特性检测器网络处理，从而控制天线的输出相位。

3. 发明授权

US4367555A Digital equalizer for a cross-polarization receiver 失效
标题翻译：用于交叉极化接收机的数字均衡器
公开(公告)号：US4367555A
公开(公告)日：1983-01-04
申请号：US170640
申请日：1980-07-21
申请人： Junji Namiki , Yukitsuna Furuya
发明人： Junji Namiki , Yukitsuna Furuya
IPC分类号： H04B7/00 , H04B1/12
CPC分类号： H04B7/002
摘要： An equalizer corrects cross-polarization distortion which occurs between two series of digital signals which are transmitted on individually associated ones of two mutually orthogonal cross-polarized waves. The distortion is corrected when a circuit discriminates between the two series of digital signals and gives an output signal which represents a value judgment as to the amount of distortion which has occurred. The output signal serves as an address for selecting one of many memory element circuits, each element circuit having a predetermined value stored therein. The value stored in the selected memory element circuit is subtracted from one series of the digital signals. The idea is that, during transmission, something (e.g., raindrops) transfers energy from one to the other of the cross-polarized waves. The equalizer circuit passes judgment as to how much energy has been transferred, and then subtracts that amount of energy in order to return to the original signal. The circuit also corrects for rotation of the two mutual orthogonal waves about their common axis.
摘要翻译：均衡器校正了在两个相互正交的交叉极化波之间的相关联的两个数字信号之间发生的两个数字信号之间发生的交叉极化失真。当电路鉴别两个数字信号序列之间时，失真被校正，并给出一个输出信号，该信号代表已经发生的失真量的值判断。输出信号用作选择多个存储元件电路之一的地址，每个元件电路具有存储在其中的预定值。存储在所选存储元件电路中的值从一系列数字信号中减去。这个想法是，在传输期间，某些（例如，雨滴）将能量从一个交叉极化波中的一个传递到另一个。均衡器电路判断已经传输了多少能量，然后减去该量的能量以返回原始信号。该电路还校正了两个相互正交波绕其公共轴的旋转。

4. 发明授权

US4321705A Digital equalizer for a cross-polarization receiver 失效
标题翻译：用于交叉极化接收机的数字均衡器
公开(公告)号：US4321705A
公开(公告)日：1982-03-23
申请号：US125671
申请日：1980-02-28
申请人： Junji Namiki
发明人： Junji Namiki
IPC分类号： H04B7/00 , H04B1/10
CPC分类号： H04B7/002
摘要： The invention is used in a receiver for a communication system, which transmits periodically occurring digital signals over a pair of orthogonally related polarized waves. Horizontal signals from one of the orthogonal waves are applied to a first input terminal of an equalizer in the receiver. Vertical signals from the other of the orthogonal waves are applied to a second input terminal. An individually associated, cascaded plurality of delay circuits is coupled to each of the input terminals. The delay in each of the delay circuits is equal to the time spacing between the occurring signals. Therefore, a plurality of the recurring digital signals appear simultaneously at the outputs of each of the delay circuits. A variable attenuator, individually associated with the output of each delay circuit, is adjusted to pass an incremental signal responsive to each of the occurring signals appearing simultaneously at the outputs of the delay circuits. These incremental signals are added to produce a first full signal when all of the digital signals received at one of the input terminals appear simultaneously at the outputs of the delay circuits associated therewith. The adder also adds the incremental signals to produce a second full signal when all of the digital signals received at the other of the input terminals appear simultaneously at the outputs of the delay circuits associated therewith. The polarity of the second full signal is opposite to the polarity of the first full signal. Therefore, the second full signal is subtracted from that part of the first full signal which appears simultaneously with the second full signal. This subtracted signal is the interference in the first signal which occurs responsive to the second signal. Therefore, only the signal applied to one input terminal appears at the output of the adder.
摘要翻译：本发明用于通信系统的接收机，其通过一对正交相关的偏振波发射周期性发生的数字信号。来自正交波之一的水平信号被施加到接收机中均衡器的第一输入端。来自另一个正交波的垂直信号被施加到第二输入端。单独相关联的级联多个延迟电路耦合到每个输入端子。每个延迟电路中的延迟等于发生信号之间的时间间隔。因此，多个重复的数字信号同时出现在每个延迟电路的输出处。单独地与每个延迟电路的输出相关联的可变衰减器被调整以响应于在延迟电路的输出处同时出现的每个出现信号而通过增量信号。当在其中一个输入端子处接收到的所有数字信号同时出现在与其相关联的延迟电路的输出处时，这些增量信号被相加以产生第一满信号。当在另一个输入端子处接收到的所有数字信号同时出现在与其相关联的延迟电路的输出处时，加法器还加上增量信号以产生第二满信号。第二满信号的极性与第一满信号的极性相反。因此，从与第二满信号同时出现的第一满信号的那部分减去第二满信号。该减去的信号是响应于第二信号发生的第一信号中的干扰。因此，只有加到一个输入端的信号出现在加法器的输出端。

5. 发明授权

US5400391A Mobile communication system 失效
标题翻译：移动通信系统
公开(公告)号：US5400391A
公开(公告)日：1995-03-21
申请号：US289545
申请日：1994-08-11
申请人： Katsumi Emura , Makoto Shibutani , Junji Namiki , Toshihito Kanai
发明人： Katsumi Emura , Makoto Shibutani , Junji Namiki , Toshihito Kanai
IPC分类号： H04B10/2575 , H04W88/08 , H04M11/00
CPC分类号： H04B10/25753 , H04B10/25752 , H04B10/25759 , H04W88/085
摘要： A cellular mobile communication system in which each of one or more cells is provided with a base radio station, and mobile terminals communicate with the base radio stations. Base radio stations (21, 22 and 23) are connected to a central base station (100) by optical fibers. The central base station is connected to a mobile switching center (50). Each of the base radio stations is provided with an O/E converter (201) and E/O converter (207). The O/E converter converts a optical signal containing speech signals and a call connection control signal into RF signals. The E/O converter (207) converts RF signals, received from a mobile terminal (11) via an antenna (204), into optical signals and transmits the optical signals to the central base station. The central base station comprises O/E converters (301-303) for converting optical signals from each base radio station into RF signals; receivers (401-403) for demodulating these RF signals; transmitters (406-408) for converting speech signals and a call connection control signal from the mobile switching center into RF signals; and E/O converters (304-306) for converting these RF signals into optical signals and transmitting the optical signals to a base radio station.
摘要翻译：一种蜂窝移动通信系统，其中一个或多个小区中的每一个被提供有基站无线电台，并且移动终端与基站无线电台进行通信。基站无线电站（21,22和23）通过光纤连接到中央基站（100）。中央基站连接到移动交换中心（50）。每个基站广播台设置有O / E转换器（201）和E / O转换器（207）。 O / E转换器将包含语音信号和呼叫连接控制信号的光信号转换成RF信号。 E / O转换器（207）将从移动终端（11）经由天线（204）接收的RF信号转换为光信号，并将光信号发送到中央基站。中央基站包括用于将来自每个基站的光信号转换为RF信号的O / E转换器（301-303）接收器（401-403），用于解调这些RF信号; 发射机（406-408），用于将来自移动交换中心的语音信号和呼叫连接控制信号转换成RF信号; 和用于将这些RF信号转换为光信号并将光信号发送到基站的E / O转换器（304-306）。

6. 发明授权

US4686672A TDMA communications apparatus having adaptive burst duration 失效
标题翻译： TDMA通信设备具有自适应突发持续时间
公开(公告)号：US4686672A
公开(公告)日：1987-08-11
申请号：US659567
申请日：1984-10-10
申请人： Junji Namiki
发明人： Junji Namiki
IPC分类号： H04B7/212 , H04J3/16 , H04J3/06
CPC分类号： H04B7/2123
摘要： A telecommunication system includes an earth-to-satellite-to earth link over which transmission is made on a time division basis. Each earth station assembles data to be transmitted in bursts during time period assigned to such earth station. The time position has a variable length which corresponds to the amount of data that is to be sent. The time positions are shifted to immediately follow each other with no idle and unused time space in or between adjoining time positions. Thus, each time frame is adaptively changed to fit the instantaneous communications traffic needs.
摘要翻译：一个电信系统包括一个地对卫星对地链路，在这个链路上进行时分的传输。每个地球站在分配给这样的地球站的时间段期间组合要以突发方式发射的数据。时间位置具有对应于要发送的数据量的可变长度。时间位置被转移以在相邻时间位置之间或之间没有空闲和未使用的时间空间紧密相连。因此，每个时间帧被自适应地改变以适应瞬时通信业务需求。

7. 发明授权

US4057762A Device for phase synchronizing a reproduced reference carrier signal with windows specified for preselected ones of amplitude and phase modulated signal points 失效
标题翻译：用于使再现的参考载波信号与对于幅度和相位调制信号点的预选的指定的窗口相位同步的装置
公开(公告)号：US4057762A
公开(公告)日：1977-11-08
申请号：US753143
申请日：1976-12-21
申请人： Junji Namiki
发明人： Junji Namiki
IPC分类号： H04L27/227 , H04L27/00 , H04L27/38 , H03D5/00
CPC分类号： H04L27/3818
摘要： A phase synchronizer for a reference carrier signal reproduced in a receiver for a combined amplitude and phase modulated signal comprises a window specifier for specifying windows for preselected ones of true signal points of which the demodulated signal is selectively representative. The phase synchronizer includes a demodulator for producing complex signals representative of coarse signal points so long as the reproduced carrier signal has a phase error which falls within the windows. Differences between the true points and the coarse points falling within the windows are calculated and summed up to produce a control signal for reducing the phase error substantially to zero.
摘要翻译：在用于组合幅度和相位调制信号的接收机中再现的参考载波信号的相位同步器包括用于指定解调信号有选择地代表的真实信号点的预选择的窗口的窗口说明符。相位同步器包括用于产生表示粗略信号点的复数信号的解调器，只要再现的载波信号具有落在窗口内的相位误差即可。计算出落在窗口内的真实点与粗点之间的差异，并将其相加以产生用于将相位误差基本减小到零的控制信号。

8. 发明授权

US4498885A Space diversity system 失效
标题翻译：空间多样性系统
公开(公告)号：US4498885A
公开(公告)日：1985-02-12
申请号：US512649
申请日：1983-07-11
申请人： Junji Namiki
发明人： Junji Namiki
IPC分类号： H04B1/12 , H04L1/06 , H04B7/08
CPC分类号： H04B1/126 , H04L1/06
摘要： A space diversity system for transmitting digital microwaves is disclosed. Each of two antennas receives a direct wave and an interference wave. The output phase of one of the two antennas is controlled to combine an output thereof with that of the other antenna, so that the interference waves cancel each other and a vector sum of the direct waves is produced as a combined output. Even if the two antenna inputs are so much alike, the combined output level and thereby the signal-to-noise ratio is prevented from being lowered whereby error in identification is eliminated.
摘要翻译：公开了一种用于传输数字微波的空间分集系统。两个天线中的每一个接收直接波和干扰波。控制两个天线之一的输出相位以将其输出与另一个天线的输出相组合，使得干扰波彼此抵消，并且产生直接波的矢量和作为组合输出。即使两个天线输入非常相似，也可以防止组合的输出电平和信噪比被降低，从而消除识别中的错误。

9. 发明授权

US4479258A Cross-polarization crosstalk canceller 失效
标题翻译：交叉极化串扰消除器
公开(公告)号：US4479258A
公开(公告)日：1984-10-23
申请号：US416112
申请日：1982-09-09
申请人： Junji Namiki
发明人： Junji Namiki
IPC分类号： H04B7/00 , H04L27/06 , H04B1/12
CPC分类号： H04B7/002 , H04L27/06
摘要： A cross-polarization crosstalk canceller is equipped to receive two polarized waves which are orthogonally crossing each other. The cross-polarization interference is eliminated by multiplying the signal received on one side by a compensating coefficient and adding the resulting product to the signal received on the other side. A discrimination error represents the difference between the reception signal after compensation and the identified value thereof. An adder and a subtractor supplies the sum and the difference between the real part and the imaginary part of the discrimination error. A discriminator detects equality between the absolute values of the real part and the imaginary part of the signal received on the interfering polarized wave side and supplies a control signal depending on the quadrant to which the signal belongs. A switch combines and varies a combination of the signs of the outputs of the adder and subtractor in response to the control signal supplied by the discriminator. A low-pass filter smooths the output of the switching in order to give the compensation coefficient.
摘要翻译：配备交叉极化串扰消除器以接收彼此正交交叉的两个偏振波。通过将在一侧接收的信号乘以补偿系数来消除交叉极化干扰，并将得到的乘积与另一侧接收的信号相加。鉴别误差表示补偿后的接收信号与其识别值之间的差。加法器和减法器提供鉴别误差的实部和虚部之和和之差。鉴别器检测在干扰极化波侧接收的信号的实部和虚部的绝对值之间的相等，并且根据信号所属的象限提供控制信号。开关根据由鉴别器提供的控制信号组合并改变加法器和减法器的输出的符号的组合。低通滤波器平滑开关的输出以给出补偿系数。

10. 发明授权

US4380082A Digital signal receiver with FM interference elimination capability 失效
标题翻译：具有FM干扰消除能力的数字信号接收机
公开(公告)号：US4380082A
公开(公告)日：1983-04-12
申请号：US257234
申请日：1981-04-24
申请人： Junji Namiki
发明人： Junji Namiki
IPC分类号： H04B1/10 , H04L25/08 , H04L1/00
CPC分类号： H04B1/10 , H04L25/08
摘要： The invention eliminates an FM interference from a digital signal when the interference occurs because the FM and digital signals are transmitted over adjacent routes and sharing a common frequency band. An error detector finds a difference between a detected baseband digital signal and an assumed transmission code, which is taken from the baseband signal. The detector produces a first error signal responsive thereto. A phase synchronizing circuit produces an output signal synchronized with the first error signal. A coefficient circuit multiplies the output of the synchronizing circuit by a complex coefficient which is then subtracted from the baseband signal. A second error detector produces a second error signal responsive to the difference between the output of the subtractor and a discriminated transmission code. Responsive thereto to a control circuit varies the complex coefficient to produce an output which is the original baseband signal, free of the FM interference.
摘要翻译：当发生干扰时，本发明消除了来自数字信号的FM干扰，因为FM和数字信号在相邻路由上传输并共享共同的频带。误差检测器发现检测到的基带数字信号与从基带信号取得的假定传输码之间的差异。检测器响应于此产生第一误差信号。相位同步电路产生与第一误差信号同步的输出信号。系数电路将同步电路的输出乘以复系数，然后将其从基带信号中减去。第二误差检测器响应于减法器的输出和识别的传输代码之间的差异产生第二误差信号。响应于控制电路改变复系数以产生作为原始基带信号的输出，没有FM干扰。

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