公开(公告)号：US4525844A

公开(公告)日：1985-06-25

申请号：US379695

申请日：1982-05-19

Applicant: Helmut Scheuermann

Inventor： Helmut Scheuermann

IPC: H04J1/05 ,  H04K1/04

CPC classification number: H04J1/05 ,  H04K1/04

Abstract: A method for interchanging the frequency positions of n partial bands, each having a bandwidth b, of a signal frequency band, by the steps of: sampling signals in the frequency band at an input sampling rate; separating the sampled signals associated with each partial band into separate channels in stages in each of which sample signals are separated into high frequency and low frequency groups and the sampling rate is reduced; altering the positions of the channels in a scrambling matrix controlled by a random sequence generator; and spectrally recombining the signals in the separate channels into a signal extending across the signal frequency band.

Abstract translation: 一种用于通过以下步骤来交换信号频带的具有带宽b的n个部分频带的频率位置的方法：以输入采样率对频带中的信号进行采样; 将与每个部分频带相关联的采样信号分阶段分离成各个采样信号，其中每个采样信号被分离成高频和低频组，采样速率降低; 改变由随机序列发生器控制的加扰矩阵中的信道的位置; 并且将分离的信道中的信号频谱重组成跨越信号频带延伸的信号。

公开(公告)号：US4510598A

公开(公告)日：1985-04-09

申请号：US405583

申请日：1982-08-05

Applicant: Heinz Gockler ,  Helmut Scheuermann

Inventor： Heinz Gockler ,  Helmut Scheuermann

IPC: H04J1/05 ,  H03H17/00 ,  H03H17/04 ,  H04J3/00 ,  H04J4/00

CPC classification number: H04J4/005

Abstract: A system for the digital conversion of a time division multiplex signal into a frequency division multiplex signal wherein the signals of the individual time multiplex channels are filtered by means of bandpass filters, their sampling rates are increased by the factor N to fA and the output signals of these bandpass filters are combined, by means of a summing member, into the frequency multiplex signal, and/or a system for the digital conversion of a frequency multiplex signal into a time division multiplex signal, wherein the digitalized frequency multiplex signal is divided by means of respective bandpass filters into the signals of the individual frequency multiplex channels and their sampling rate fA is reduced by the factor N. The individual bandpass filters (BP) are designed as recursive filters having the transfer functionH(z)=U2(z)/U1(z)=P(z)/Q(z.sup.N)where U1(z) and U2(z) represent the filter input and filter output spectra respectively, z=e.sup.j2.pi.f/fA, and f is the signal frequency.

Abstract translation: 一种用于将时分复用信号数字转换成频分复用信号的系统，其中各个时间多路复用信道的信号通过带通滤波器进行滤波，其采样速率由因子N增加到fA，输出信号 这些带通滤波器通过加法器组合到频率复用信号中，和/或用于将频率复用信号数字转换成时分复用信号的系统，其中将数字化频率复用信号除以 各个带通滤波器到各个频率复用信道的信号中的装置和它们的采样率fA被降低了因子N.各个带通滤波器（BP）被设计为具有传递函数H（z）= U2（z）的递归滤波器 ）/ U1（z）= P（z）/ Q（zN）其中U1（z）和U2（z）分别表示滤波器输入和滤波器输出频谱，z = ej2 pi f / fA，f是信号频率 ncy。

公开(公告)号：US4716537A

公开(公告)日：1987-12-29

申请号：US592799

申请日：1984-03-23

Applicant: Helmut Scheuermann

Inventor： Helmut Scheuermann

IPC: H03H17/02 ,  G06F7/38

CPC classification number: H03H17/0201

Abstract: A wave two port circuit arrangement for simulating a resistive elementary port two device for use in a wave digital filter. First and second ports are each arranged for receiving input and output signals. A summing device is connected to the first and second ports and produces a sum signal which represents the sum of the input signals present at the first and second ports. A multiplier is connected to the summing device and to one of the first and second ports for producing a negatively scaled sum signal and feeding it to the one port as part of the output signal present at that port.

Abstract translation: 用于模拟用于波数字滤波器的电阻性基本端口两个装置的波形两端口电路装置。 第一和第二端口每个被布置用于接收输入和输出信号。 求和装置连接到第一和第二端口，并产生表示第一和第二端口处存在的输入信号之和的和信号。 乘法器连接到求和装置和第一和第二端口中的一个端口，用于产生负向量化的和信号，并将其馈送到作为在该端口处的输出信号的一部分的一个端口。