公开(公告)号：US20050190860A1

公开(公告)日：2005-09-01

申请号：US11057554

申请日：2005-02-14

申请人： Andre Neubauer ,  Jurgen Niederholz

发明人： Andre Neubauer ,  Jurgen Niederholz

IPC分类号： H04L25/03 ,  H04L27/06 ,  H04L27/233

CPC分类号： H04L27/2335 ,  H04L25/03178

摘要： Apparatus for demodulation of a signal which is frequency-modulated with a data symbol sequence {dk}, having a zero crossing detector (1), a generator (2) for production of a sequence {zi}, with zi being calculated from zero crossings ti and ti+1, and having a unit (3) for reconstruction of the data symbol sequence {dk}, which is characterized by a minimum Euclidean distance between the sequence {zi} and an auxiliary sequence, with each sequence element in the auxiliary sequence being formed from convolution of the data symbol sequence {dk} with a sequence {hi,k} relating to the index k, and with the sequences {hi,k} being functions of the times ti.

摘要翻译： 用于解调用具有过零检测器（1）的数据符号序列（d）进行频率调制的信号的装置，用于产生序列{z < 其中z i是从零交叉t i和i i + 1 i计算的，并且具有单位 （3），用于重建数据符号序列{d> k N}，其特征在于序列{z> i i}与辅助序列之间的最小欧几里德距离，其中， 辅助序列中的每个序列元素由数据符号序列{d> k N}与与索引k相关的序列{h i，i，k}卷积形成，以及 其中序列{h i，i，k i}是时间t i i i的函数。

公开(公告)号：US20060008033A1

公开(公告)日：2006-01-12

申请号：US11176459

申请日：2005-07-07

申请人： Jurgen Niederholz ,  Andre Neubauer

发明人： Jurgen Niederholz ,  Andre Neubauer

IPC分类号： H03D1/00

CPC分类号： H04L27/1563

摘要： A detector for zero crossings determines the zero crossings in the received signal or in an intermediate frequency signal which is generated from the received signal. Since, in the case of frequency-modulated signals, the number of zero crossings per symbol interval is naturally not constant, the zero crossing sequence is mapped to a sequence {zi} of parameter values zi which are at equidistant time intervals by means of mathematical, non-linear mapping. Mean value formation of zero crossing intervals or determination of the number of zero crossings can be used for mapping. The sequence of parameter values zi at equidistant time intervals can be supplied to a conventional detection algorithm such as a Viterbi detection algorithm.

摘要翻译： 用于过零点的检测器确定接收信号中的过零点或从接收信号产生的中频信号。 由于在频率调制信号的情况下，每符号间隔的过零次数自然不是恒定的，所以过零序列被映射到参数值z 的序列。

公开(公告)号：US20050058226A1

公开(公告)日：2005-03-17

申请号：US10938240

申请日：2004-09-10

申请人： Jurgen Niederholz ,  Andre Neubauer

发明人： Jurgen Niederholz ,  Andre Neubauer

IPC分类号： H04L27/156 ,  H04L27/06

CPC分类号： H04L27/1563

摘要： The possible number of zero crossings in the interval [kTb,(k+1)Tb] is determined for each time (k+1)Tb based on hypothetical subsequences, on the basis of a model for frequency modulation, and a trellis diagram is constructed, based on the model. In a first selection step, those paths in the trellis diagram are then excluded whose number of zero crossings in the stated interval does not match the number of detected zero crossings in the received subsequence in this interval. In a second selection step, the path metrics of the paths which still exist are extended by the new branch metrics based on the Viterbi algorithm which is known per se. If two paths meet one another at a node point then only that path which has the lower path metric is continued.

摘要翻译： 基于假设的子序列，基于频率调制的模型，针对每个时间（k + 1）Tb确定区间[kTb，（k + 1）Tb]中的零交叉的可能数量，并且网格图 基于模型构建。 在第一选择步骤中，然后排除网格图中的那些路径，其中所述间隔中的过零点数与在该间隔中接收的子序列中检测到的过零点的数量不匹配。 在第二选择步骤中，仍然存在的路径的路径度量基于本身已知的维特比算法被新的分支度量扩展。 如果两个路径在节点处彼此相遇，那么只有具有较低路径度量的路径才能继续。

公开(公告)号：US20060222107A1

公开(公告)日：2006-10-05

申请号：US11373463

申请日：2006-03-10

申请人： Andre Neubauer ,  Jurgen Niederholz

发明人： Andre Neubauer ,  Jurgen Niederholz

IPC分类号： H03D3/00

CPC分类号： H04L27/2337

摘要： A method for calculating zero-crossing reference sequences ({ti}) for the data detection of a sequence of zero crossings ({{circumflex over (t)}i}) of a received signal is disclosed. The data detection is determined in a receiver, wherein the received signal is based on a data symbol sequence ({dk}) angle-modulated at a transmitter and transmitted to the receiver. The zero-crossing reference sequences ({ti}) are calculated in accordance with an equation specifying an output of a finite state machine that describes, at least approximately, the signal generation in the transmitter.

摘要翻译： 一种用于计算接收信号的过零序列（（t））的数据检测的过零参考序列（{t i i i>}）的方法是 披露 在接收机中确定数据检测，其中所接收的信号基于在发射机处角度调制并被发送到接收机的数据符号序列（{d> k N}}）。 根据规定至少近似地描述发射机中的信号产生的有限状态机的输出的等式来计算过零参考序列（{t i i i>}）。

公开(公告)号：US07010063B2

公开(公告)日：2006-03-07

申请号：US10455051

申请日：2003-06-05

申请人： Markus Hammes ,  Andre Neubauer

发明人： Markus Hammes ,  Andre Neubauer

IPC分类号： H04L27/14

CPC分类号： H04B1/30 ,  H03D3/007 ,  H04L27/1525

摘要： A receiver circuit of a cordless communication system has an analog signal processing section with a channel selection filter and a digital signal processing section which is connected downstream of the latter and has a group delay equalizer. The group delay equalizer is used to equalize the digital distortion caused by the channel selection filter.

公开(公告)号：US20060012522A1

公开(公告)日：2006-01-19

申请号：US11174211

申请日：2005-07-01

申请人： Andreas Schmid ,  Andre Neubauer

发明人： Andreas Schmid ,  Andre Neubauer

IPC分类号： G01S1/24 ,  G01S3/02

CPC分类号： G01S5/0205 ,  G01S5/12

摘要： A receiver (1) of a position-finding system comprises a calculation unit (6, 7, 8) for calculation of a statistical value (A) on the basis of a received signal, and a detector unit (9) for comparison of the statistical value (A) with a threshold value (K) and for determining whether the received signal is a synchronized location signal, an estimation unit (10) for estimation of the Rice factor (K) of the radio link via which the received signal has been transmitted, and a determination unit for calculation of the threshold value (κ) on the basis of the Rice factor (K).

摘要翻译： 位置查找系统的接收机（1）包括用于基于接收信号计算统计值（A）的计算单元（6,7,8）和用于比较接收信号的检测器单元（9） 具有阈值（K）并且用于确定接收信号是否是同步位置信号的统计值（A），用于估计接收信号具有的无线电链路的Rice因子（K）的估计单元（10） 以及基于赖斯因子（K）计算阈值（kappa）的确定单元。

公开(公告)号：US20070011219A1

公开(公告)日：2007-01-11

申请号：US11379344

申请日：2006-04-19

申请人： Andre Neubauer

发明人： Andre Neubauer

IPC分类号： G06F17/14

CPC分类号： H04L27/156 ,  H04L27/2337 ,  H04L2027/0065

摘要： In a method for estimating a frequency offset (fe, Ωe) of a modulated bandpass signal (s) with an assumed carrier frequency (Ω0) in a mobile radio receiver, times (τj) of the zero cross-overs of the bandpass signal are determined in a first step. Using the times (τj) of the zero cross-overs and the assumed carrier frequency (Ω0), the required frequency offset (fe, Ωe) is estimated in a further step by calculating the DC component of an instantaneous frequency which is given by the frequency of the bandpass signal less the assumed carrier frequency.

摘要翻译： 在用于估计具有假定载波频率（Ω= 0）的调制带通信号的频率偏移（f O，ω，ω）的方法中， 在移动无线电接收机中，在第一步骤中确定带通信号的零交叉的时间（τj）。 使用零交叉和假定的载波频率（Ω-0> 0）的时间（τN j），所需的频率偏移（f SUB）

公开(公告)号：US06944220B2

公开(公告)日：2005-09-13

申请号：US10174283

申请日：2002-06-17

申请人： Andre Neubauer

发明人： Andre Neubauer

IPC分类号： H04L27/14 ,  H03H17/04 ,  H04B1/10 ,  H03H7/30

CPC分类号： H03H17/04

摘要： For the offset compensation of a digital signal, particularly of a communication signal transmitted in a cordless digital communication system, a recursive digital filter is used. The recursive digital filter has at least one filter coefficient that is varied in a time-dependent manner. The recursive digitial filter has a first multiplying device multiplying symbols of the digital input signal by a first time-variable filter coefficient to obtain a digital output signal having symbols.

摘要翻译： 对于数字信号的偏移补偿，特别是在无绳数字通信系统中发送的通信信号的偏移补偿，使用递归数字滤波器。 递归数字滤波器具有至少一个随时间变化的滤波器系数。 递归数字滤波器具有将数字输入信号的符号乘以第一时间变量滤波器系数的第一乘法装置，以获得具有符号的数字输出信号。

公开(公告)号：US06785348B2

公开(公告)日：2004-08-31

申请号：US10328917

申请日：2002-12-23

申请人： Markus Hammes ,  Michael Madden ,  Andre Neubauer ,  Michael Speth

发明人： Markus Hammes ,  Michael Madden ,  Andre Neubauer ,  Michael Speth

IPC分类号： H03D310

CPC分类号： H04L27/2003 ,  H04L25/03178 ,  H04L27/22 ,  H04L2025/03407

摘要： In a method for demodulating a CPFSK-modulated signal, the n−1-th substitute symbol an−1 which occurs in the linear approximation of the CPFSK is estimated in order to determine an n-th input data symbol dn on which the CPFSK modulation is based. The n−1-th substitute symbol an−1 is in this case estimated on the basis of the previously determined n−1-th input data symbol {circumflex over (d)}n−1.

摘要翻译： 在解调CPFSK调制信号的方法中，估计在CPFSK的线性近似中出现的第n-1代替符号a-1，以便确定其上CPFSK调制的第n个输入数据符号dn 基于。 在这种情况下，根据先前确定的第n-1输入数据符号dn-1来估计第n-1个替代符号a-1。

公开(公告)号：US06549588B2

公开(公告)日：2003-04-15

申请号：US10094559

申请日：2002-03-08

申请人： Andre Neubauer

发明人： Andre Neubauer

IPC分类号： H03D124

CPC分类号： H04L27/2332 ,  H04L27/18

摘要： Angle-modulated signals are transmitted in a communications system, in which coding information has been inserted into the transmitted data at regular intervals. The coding information is phase-modulated together with the transmitted data. This coding is used for pulse shaping, so that the receiver can recover the digital transmitted data with less implementation complexity and without carrier phase control by using appropriate signal processing.