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公开(公告)号：US4654814A
公开(公告)日：1987-03-31
申请号：US691532
申请日：1985-01-15
申请人： Georg Sebald , Alfred Nist
发明人： Georg Sebald , Alfred Nist
摘要： A 1 bit/1 bit digital correlator includes a digital multiplier stage and an analog integrator stage, the analog integrator stage having a feedback loop for automatically adjusting a reference voltage for the integrator. The digital multiplier may be an exclusive OR gate which combines two incoming digital sequences and generates a digital output sequence which is divided into two paths in the integrator stage, one path being utilized for obtaining the reference voltage for the integrator and the other path forming a signal path for the integrator. The reference voltage path includes a switch operated by a refresh signal for selectively completing an RC network which is connected to the non-inverting input of an operational amplifier. The signal path includes a low-pass filter connected through a resistor to the inverting input of the operational amplifier, the operational amplifier having a capacitor connected across its output and its inverting input. A feedback loop for resetting the integrator stage is also connected between the output of the first operational amplifier and its inverting input and includes a second operational amplifier having an output selectively connectable through a further switch to the inverting input of the first operational amplifier, and having an inverting input to which a reference starting voltage is supplied and a non-inverting input connected to the output of the first operational amplifier.
摘要翻译： 1位/ 1位数字相关器包括数字乘法器级和模拟积分级，模拟积分级具有用于自动调整积分器的参考电压的反馈回路。 数字乘法器可以是组合两个输入数字序列的异或门，并产生在积分器级中被分成两个路径的数字输出序列，一个路径用于获得用于积分器的参考电压，另一个路径形成 积分器的信号路径。 参考电压路径包括由刷新信号操作的开关，用于选择性地完成连接到运算放大器的非反相输入端的RC网络。 信号路径包括通过电阻器连接到运算放大器的反相输入端的低通滤波器，运算放大器具有连接在其输出端和其反相输入端之间的电容器。 用于复位积分器级的反馈回路也连接在第一运算放大器的输出与其反相输入之间，并且包括第二运算放大器，其具有可选择地通过另一个开关连接到第一运算放大器的反相输入的输出，并且具有 提供参考启动电压的反相输入端和连接到第一运算放大器的输出端的非反相输入端。
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公开(公告)号：US07509054B2
公开(公告)日：2009-03-24
申请号：US10528313
申请日：2003-08-13
IPC分类号： H04B10/00
摘要： Binary signals are converted at the transmission end into two optical signals which are combined into a polarization multiplex signal and are then transmitted. The transmitted polarization multiplex signal is divided at the receiving end into two polarized signal parts which are converted in a linear manner into orthogonal electrical components and are supplied to a multidimensional filter. Said multidimensional filter replaces a polarization controller, restores the signal values that correspond to the signals at the transmission end, and compensates signal distortions.
摘要翻译： 二进制信号在发送端被转换成两个光信号，这两个信号被组合成偏振多路复用信号，然后发送。 传输的偏振复用信号在接收端分为两个极化信号部分，它们以线性方式转换为正交电子部件，并被提供给多维滤波器。 所述多维滤波器替代偏振控制器，恢复与发射端处的信号相对应的信号值，并补偿信号失真。
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公开(公告)号：US20050286904A1
公开(公告)日：2005-12-29
申请号：US10528313
申请日：2003-08-13
摘要： Binary signals are converted at the transmission end into two optical signals which are combined into a polarization multiplex signal and are then transmitted. The transmitted polarization multiplex signal is divided at the receiving end into two polarized signal parts which are converted in a linear manner into orthogonal electrical components and are supplied to a multidimensional filter. Said multidimensional filter replaces a polarization controller, restores the signal values that correspond to the signals at the transmission end, and compensates signal distortions.
摘要翻译： 二进制信号在发送端被转换成两个光信号，这两个信号被组合成偏振多路复用信号，然后发送。 传输的偏振复用信号在接收端分为两个极化信号部分，它们以线性方式转换为正交电子部件，并被提供给多维滤波器。 所述多维滤波器替代偏振控制器，恢复与发射端处的信号相对应的信号值，并补偿信号失真。
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公开(公告)号：US4800572A
公开(公告)日：1989-01-24
申请号：US91020
申请日：1987-08-31
申请人： Josef A. Nossek , Georg Sebald , Berthold Lankl , Klaus Boshold
发明人： Josef A. Nossek , Georg Sebald , Berthold Lankl , Klaus Boshold
CPC分类号： H04L27/01
摘要： An adaptive frequency range equalizer for digital radio relay systems which require adaptive frequency range equalizers which have coefficients that are adjustable. That are different possibilities for setting the coefficients of the transversal filter in such equalizers in a manner such that the transmission function of the transversal filter is either of the minimum phase type (mp), or the linear phase type (lp) or the non-minimum phase type (mnp). The invention discloses a method and apparatus for obtaining either of the three transmission functions for the transversal filter.
摘要翻译： 一种用于数字无线电中继系统的自适应频率范围均衡器，其需要具有可调节系数的自适应频率范围均衡器。 这是以这样的方式设置这种均衡器中的横向滤波器的系数的不同可能性，使得横向滤波器的传输函数是最小相位类型（mp）或线性相位类型（lp）或非线性相位类型 最小相位类型（mnp）。 本发明公开了一种用于获得横向滤波器的三种传输功能之一的方法和装置。
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公开(公告)号：US4745623A
公开(公告)日：1988-05-17
申请号：US911675
申请日：1986-09-25
申请人： Georg Sebald , Berthold Lankl , Josef A. Nossek
发明人： Georg Sebald , Berthold Lankl , Josef A. Nossek
CPC分类号： H04L25/03057 , H04L2025/0342 , H04L2025/0349 , H04L2025/03515 , H04L2025/03624
摘要： An adaptive transverse equalizer formed of delay elements, control elements and summers, and which is constructed in accordance with a serial-in/parallel-out or parallel-in/serial-out concept. Such an equalizer should be improved such that, given a simple structure, it exhibits a high equalizing performance and is particularly suitable for multi-stage digital radio link systems. For this purpose, an equalizer is provided as a linear transverse equalizer and having (n-1) positive and m negative coefficients set in accordance with a zero-forcing algorithm. A linear transverse filter is provided which supplies at least one additional, positive coefficient following upon an access region of the linear transverse filter and whose loop transit time corresponds to n-times or (n+i) times a symbol period.
摘要翻译： 由延迟元件，控制元件和加法器构成的自适应横向均衡器，其根据串联/并行输出或并行/串联结构构造。 应该改进这种均衡器，使得由于简单的结构，它具有高均衡性能，特别适用于多级数字无线电链路系统。 为此，提供均衡器作为线性横向均衡器并具有根据强迫算法设置的（n-1）正和m个负系数。 提供线性横向滤波器，其提供至少一个额外的正系数，跟随在线性横向滤波器的访问区域上，并且其循环传播时间对应于符号周期的n倍或（n + i）倍。
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