专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

21. 发明授权

US4445223A Apparatus and method for determining the presence and frequency of a periodic signal 失效
标题翻译：用于确定周期信号的存在和频率的装置和方法
公开(公告)号：US4445223A
公开(公告)日：1984-04-24
申请号：US222422
申请日：1981-01-05
申请人： Steven C. Jasper , Robert V. Janc , David S. Robins , Michael H. Retzer
发明人： Steven C. Jasper , Robert V. Janc , David S. Robins , Michael H. Retzer
IPC分类号： H04B1/10 , C30B29/62 , G01R23/02 , G01S1/24 , G01S5/10 , H03K3/78
CPC分类号： G01S1/245 , G01R23/02
摘要： An apparatus and method for determining the period and frequency of a signal intefering with a desired Loran C signal are provided. A sample of the interfering signal is generated at a time corresponding to the peak of the autocorrelation function of the interfering signal with respect to the predetermined pulse tracking reference point of the Loran C signal. Indicia of the period and frequency of the interferer is obtained from the timing of the sample generated at the autocorrelation function peak.
摘要翻译：提供了一种用于确定与期望的罗兰C信号的信号的周期和频率的装置和方法。在与干涉信号的自相关函数的峰值相对于罗兰C信号的预定脉冲跟踪参考点的峰值的时间产生干扰信号的样本。从自相关函数峰值处生成的样本的定时获得干扰源的周期和频率的标记。

22. 发明授权

US4339823A Phase corrected clock signal recovery circuit 失效
标题翻译：相位校正时钟信号恢复电路
公开(公告)号：US4339823A
公开(公告)日：1982-07-13
申请号：US178401
申请日：1980-08-15
申请人： Joseph P. Predina , Steven C. Jasper
发明人： Joseph P. Predina , Steven C. Jasper
IPC分类号： H04L7/027 , H04L7/033 , H03D3/24 , H04L25/34
CPC分类号： H04L7/033 , H04L7/027
摘要： Apparatus is provided for generating a recovered clock signal having pulses with a selected transitory edge timed to occur at the center of the eye intervals of a multilevel digital signal.
摘要翻译：提供了用于产生恢复的时钟信号的装置，其具有定时发生在多级数字信号的眼睛间隔的中心的脉冲的脉冲。

23. 发明授权

US07233633B2 Channel estimation using linearly constrained filter coefficients 有权
标题翻译：使用线性约束滤波系数的信道估计
公开(公告)号：US07233633B2
公开(公告)日：2007-06-19
申请号：US11098218
申请日：2005-04-04
申请人： Isam R. Makhlouf , Steven C. Jasper
发明人： Isam R. Makhlouf , Steven C. Jasper
IPC分类号： H04L27/06 , H04B1/10
CPC分类号： H04L25/0224 , H04L27/2647
摘要： A system that includes a receiver (100) that is configured for: selecting (210) a set of demodulator output samples and a corresponding set of reference symbols each having a magnitude; generating (220) a set of raw channel estimates based on the set of demodulator output samples and the corresponding set of reference symbols; determining (230) a set of linearly-constrained filter coefficient parameters; and combining (240) the set of raw channel estimates with the set of linearly-constrained filter coefficient parameters to generate a channel estimate.
摘要翻译：一种包括接收机（100）的系统，其被配置为：选择（210）一组解调器输出采样和各自具有幅度的对应的参考符号集合; 基于所述解调器输出样本集合和相应的参考符号集合来生成（220）一组原始信道估计; 确定（230）一组线性约束滤波器系数参数; 以及将所述原始信道估计集合与所述线性约束滤波器系数参数的集合（240）以生成信道估计。

24. 发明授权

US5758275A Method and apparatus for scheduling adaptation for a notch filter 失效
标题翻译：调度陷波滤波器适配的方法和装置
公开(公告)号：US5758275A
公开(公告)日：1998-05-26
申请号：US537196
申请日：1995-09-29
申请人： Gregory W. Cox , Robert F. Lay , Douglas M. Hamilton , Mark Gannon , Steven C. Jasper , Manuel P. Gabato
发明人： Gregory W. Cox , Robert F. Lay , Douglas M. Hamilton , Mark Gannon , Steven C. Jasper , Manuel P. Gabato
IPC分类号： H04B1/10
CPC分类号： H04B1/1036 , H04B2001/1063
摘要： EMI spur interference is reduced in a system where the desired signal has periodically repeating components without destructively interfering with the repeating components. The frequency of the spur interference is determined (203) and fed to a notch filter (201) so as to center the notch at the frequency of the spur interference. Determination of the frequency is scheduled (601) to avoid cancellation of desired periodically repeating components of the signal.
摘要翻译：在所需信号具有周期性重复分量而不会破坏性地干扰重复分量的系统中，EMI杂散干扰减小。确定杂散干扰的频率（203）并将其馈送到陷波滤波器（201），以便使陷波处于杂散干扰的频率处。调度频率的确定（601）以避免消除信号的期望的周期性重复分量。

25. 发明授权

US5715240A Communication device capable of estimating signal quality without synchronization pattern 失效
标题翻译：无需同步模式即可估计信号质量的通信设备
公开(公告)号：US5715240A
公开(公告)日：1998-02-03
申请号：US642548
申请日：1996-05-03
申请人： Jaime A. Borras , Steven C. Jasper , James P. Michels , Troy J. Beukema
发明人： Jaime A. Borras , Steven C. Jasper , James P. Michels , Troy J. Beukema
IPC分类号： H04L7/00 , H04L7/10 , H04N3/06 , H04N3/14
CPC分类号： H04L7/0004 , H04L7/10
摘要： A method determines the signal usability of an adjacent channel in a multi-cell communication system without the aid of synchronization symbols. In general, a three step search is used to arrive at the adjacent channel signal quality. The first step is a coarse timing phase search. This is accomplished through a signal quality estimates (606). The second step arrives at the optimum time phase by first interpolating (608) the received signal around the time phase selected in the first step to generate additional samples. After the interpolation (608), signal quality estimates are calculated (610) for the time phases immediately surrounding the time phase found in the first step. The optimum time phase corresponds to the maximum of these quality estimates. Finally, in the third step, the signal quality estimate is calculated for the optimum time phase. This provides the adjacent channel signal quality estimate desired.
摘要翻译：一种方法确定多小区通信系统中相邻信道的信号可用性，而不需要同步符号。通常，使用三步搜索来获得相邻信道信号质量。第一步是粗略的时序相位搜索。这是通过信号质量估计来实现的（606）。第二步通过首先内插（608）在第一步骤中选择的时间相位周围的接收信号以产生附加样本，到达最佳时间阶段。在内插（608）之后，针对在第一步骤中发现的时间段周围的时间阶段计算信号质量估计（610）。最佳时间段对应于这些质量估计的最大值。最后，在第三步中，针对最佳时间阶段计算信号质量估计。这提供了期望的相邻信道信号质量估计。

26. 发明授权

US5533004A Method for providing and selecting amongst multiple data rates in a time division multiplexed system 失效
标题翻译：用于在时分复用系统中提供和选择多个数据速率的方法
公开(公告)号：US5533004A
公开(公告)日：1996-07-02
申请号：US334982
申请日：1994-11-07
申请人： Steven C. Jasper , Kenneth J. Crisler
发明人： Steven C. Jasper , Kenneth J. Crisler
IPC分类号： H04B7/26 , H04L1/00 , H04B7/212
CPC分类号： H04L1/0071 , H04B7/2659 , H04L1/0003 , H04L1/0009 , H04L1/0015
摘要： In a Radio Frequency (RF) communication system using Time Division Multiple Access (TDMA) having time slots of a common duration, a quantity of information bits to be transmitted is provided. Based at least in part on the number of information bits to be transmitted, a modulation technique is selected from a plurality of modulation techniques. Based at least in part on the modulation technique selected and the common duration of the time slots, the information bits are formatted into blocks, each block containing an equal number of information bits. The blocks are transmitted in the time slots such that a predetermined symbol rate is maintained.
摘要翻译：在使用具有公共持续时间的时隙的时分多址（TDMA）的射频（RF）通信系统中，提供要发送的信息比特量。至少部分地基于要发送的信息比特的数量，从多种调制技术中选择调制技术。至少部分地基于选择的调制技术和时隙的公共持续时间，信息比特被格式化成块，每个块包含相等数量的信息比特。在时隙中发送块，使得保持预定的符号率。

27. 发明授权

US4922549A Digital FM squelch detector 失效
标题翻译：数字FM静噪检测器
公开(公告)号：US4922549A
公开(公告)日：1990-05-01
申请号：US265367
申请日：1988-10-27
申请人： Mark J. Johnson , Francis R. Yester, Jr. , Steven C. Jasper
发明人： Mark J. Johnson , Francis R. Yester, Jr. , Steven C. Jasper
IPC分类号： H04B1/10 , H03G3/34 , H04B1/16
CPC分类号： H03G3/344 , H04B1/16
摘要： A method is disclosed for determining when a frequency-modulated expected information signal resides at a predetermined channel. The method is based on determining a value based on the frequency deviation of the received signal, and then comparing the value with a threshold based on the expected information signal. The method is particularly well-suited for use as a squelch detector in digital FM radios.
摘要翻译：公开了一种用于确定频率调制期望信息信号何时位于预定信道的方法。该方法基于基于接收信号的频率偏差确定值，然后基于预期信息信号将该值与阈值进行比较。该方法特别适用于数字FM收音机中的静噪检测器。

28. 发明授权

US4392138A Apparatus and method for detecting and inhibiting signals interfering with a Loran C signal 失效
标题翻译：用于检测和抑制干扰罗兰C信号的信号的装置和方法
公开(公告)号：US4392138A
公开(公告)日：1983-07-05
申请号：US222421
申请日：1981-01-05
申请人： Steven C. Jasper , Robert V. Janc
发明人： Steven C. Jasper , Robert V. Janc
IPC分类号： G01S1/24 , H04B7/00
CPC分类号： G01S1/245
摘要： An interference rejection apparatus is provided which samples the Loran C signal at selected pulse tracking reference points. The Loran C samples are separated into even and odd groups by appropriate summing-weighting circuitry. The even pulse and odd pulse waveforms thus produced are analyzed to determine the presence of an interfering signal which corrupts either of the off or even pulse groups. Upon detection of interference with either the even or odd Loran C samples, strobe dropping is employed to reject the affected group of samples.
摘要翻译：提供了一种干扰抑制装置，其在选定的脉冲跟踪参考点处采集Loran C信号。 Loran C样本通过适当的求和加权电路分为偶数和奇数组。分析如此产生的均匀脉冲和奇数脉冲波形，以确定干扰信号的存在，这破坏了脉冲组中的任一个或甚至是脉冲组。当检测到偶数或奇数Loran C样本的干扰时，使用选通脉冲来拒绝受影响的样本组。

29. 发明授权

US07072783B2 Frequency and timing error estimation and corresponding channel characterization in a communication system 有权
标题翻译：通信系统中的频率和定时误差估计及相应的信道特征
公开(公告)号：US07072783B2
公开(公告)日：2006-07-04
申请号：US10782448
申请日：2004-02-19
申请人： Isam R. Makhlouf , Steven C. Jasper
发明人： Isam R. Makhlouf , Steven C. Jasper
IPC分类号： G01R29/26
CPC分类号： H04L27/2657 , H04L27/266 , H04L27/2665 , H04L2027/0034
摘要： A method for determining a frequency error over at least one frequency search space for a received signal, the method including the steps of: calculating a first noise estimation for a first frequency offset in a frequency search space; calculating at least a second noise estimation for a second frequency offset in the frequency search space; and determining a minimum noise estimation from the calculated noise estimations, wherein the frequency error is the frequency offset corresponding to the minimum noise estimation.
摘要翻译：一种用于确定接收信号的至少一个频率搜索空间的频率误差的方法，所述方法包括以下步骤：计算频率搜索空间中第一频率偏移的第一噪声估计; 计算所述频率搜索空间中的第二频率偏移的至少第二噪声估计; 以及根据所计算的噪声估计来确定最小噪声估计，其中所述频率误差是对应于所述最小噪声估计的频率偏移。

30. 发明授权

US06441786B1 Adaptive antenna array and method for control thereof 有权
标题翻译：自适应天线阵列及其控制方法
公开(公告)号：US06441786B1
公开(公告)日：2002-08-27
申请号：US09909602
申请日：2001-07-20
申请人： Steven C. Jasper , Mark Allen Birchler , Nicholas C. Oros , James P. Michels
发明人： Steven C. Jasper , Mark Allen Birchler , Nicholas C. Oros , James P. Michels
IPC分类号： G01S316
CPC分类号： H04B7/0842 , H01Q3/2605
摘要： A method for controlling an adaptive antenna array (50) is provided and includes receiving a plurality of signals, each signal including a series of signal data symbols (42) and signal non-data symbols (38, 40) divided into symbol transmission units with the signal non-data symbols (38, 40) disposed among the signal data symbols (42) in each unit and each signal related to the other signals of the plurality of signals as reflections of an original signal. The method also includes separating the signal non-data symbols (38, 40) from the signal data symbols (42), and comparing the signal non-data symbols (38, 40) to a set of known non-data symbols. The method further includes determining a set of weights according to the comparison of the signal non-data symbols (38, 40) to the set of known non-data symbols, the weights to be combined with the signal data values (42) to limit the effect of interference on the signal data symbols (42). An adaptive antenna array (50) is also provided including a weight calculator (62) including a program which controls the weight calculator (62) to perform the comparing (88, 90) and determining steps (94) of the method discussed above.
摘要翻译：提供了一种用于控制自适应天线阵列（50）的方法，包括接收多个信号，每个信号包括一系列信号数据符号（42）和信号非数据符号（38,40），被分成符号传输单元，设置在每个单元中的信号数据符号（42）中的信号非数据符号（38,40），以及与多个信号的其他信号相关的每个信号作为原始信号的反射。该方法还包括从信号数据符号（42）中分离信号非数据符号（38,40），以及将信号非数据符号（38,40）与一组已知的非数据符号进行比较。该方法还包括根据信号非数据符号（38,40）与所述已知非数据符号集合的比较来确定一组权重，要与信号数据值（42）组合的权重以限制干扰对信号数据符号（42）的影响。还提供了自适应天线阵列（50），其包括权重计算器（62），该权重计算器（62）包括控制权重计算器（62）执行上述方法（88,90）和确定步骤（94）的程序。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式