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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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公开(公告)号：US20090323848A1
公开(公告)日：2009-12-31
申请号：US12454681
申请日：2009-05-20
IPC分类号： H04B7/02
CPC分类号： H04B7/0426 , H04B7/0452
摘要： A spatial sub-channel selection and pre-coding apparatus for being operative in a first communication device, the first communication device being adapted for communicating with a second and a third communication device using MIMO (Multiple-Input-Multiple-Output) radio channels, a first MIMO radio channel extending between the first communication device and the second communication device having at least one spatial sub-channel, a second MIMO radio channel extending between the first communication device and the third communication device having at least one spatial sub-channel, wherein one of the first MIMO radio channel or the second MIMO radio channel has at least two spatial sub-channels.
摘要翻译： 一种用于在第一通信设备中操作的空间子信道选择和预编码设备，所述第一通信设备适于使用MIMO（多输入多输出）无线电信道与第二和第三通信设备进行通信， 在第一通信设备和具有至少一个空间子信道的第二通信设备之间延伸的第一MIMO无线电信道，在第一通信设备和具有至少一个空间子信道的第三通信设备之间延伸的第二MIMO无线电信道， 其中所述第一MIMO无线电信道或所述第二MIMO无线电信道中的一个具有至少两个空间子信道。
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公开(公告)号：US4617537A
公开(公告)日：1986-10-14
申请号：US595527
申请日：1984-03-30
申请人： Josef A. Nossek
发明人： Josef A. Nossek
CPC分类号： H04L27/362
摘要： Spectrum-converting digital filters are employed for quadrature amplitude modulation. Given the method of the invention, the frequency of the two carrier oscillations residing at 90.degree. relative to one another amounts to one-fourth the sampling frequency and, in addition, their phase positions relative to the sampling times is selected such that every second sample of both carrier oscillations is alternately zero.
摘要翻译： 频谱转换数字滤波器用于正交幅度调制。 给定本发明的方法，相对于彼此驻留在90度的两个载波振荡的频率达到采样频率的四分之一，此外，它们相对于采样时间的相位位置被选择为使得每第二个采样 两个载波振荡交替为零。
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