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11. 发明授权

US5553102A Diversity reception communication system with maximum ratio combining method 失效
标题翻译：具有最大比例组合方法的分集接收通信系统
公开(公告)号：US5553102A
公开(公告)日：1996-09-03
申请号：US348027
申请日：1994-12-01
申请人： Steven C. Jasper , Mark A. Birchler , Nicholas C. Oros
发明人： Steven C. Jasper , Mark A. Birchler , Nicholas C. Oros
IPC分类号： H04B7/08 , H04B7/10
CPC分类号： H04B7/0848
摘要： In a diversity reception communication system (200), a method is provided for recovering data symbols (213) from a transmitted signal. Multiple signals representing the transmitted signal are received via corresponding multiple reception paths (201, 202). For each reception path, values are determined for noise (206), channel quality (207), and for a weighting factor (209) as a function of the channel quality. The signals are processed using diversity combining (212) which includes the weighting factor (209) for each reception path, to provide a resultant signal that more likely represents the transmitted signal than any of the received signals alone. The data symbols (213) are recovered from the resultant signal.
摘要翻译：在分集接收通信系统（200）中，提供了从发送信号中恢复数据符号（213）的方法。通过相应的多个接收路径（201,202）接收表示发送信号的多个信号。对于每个接收路径，确定噪声（206），信道质量（207）和作为信道质量的函数的加权因子（209）的值。使用包括每个接收路径的加权因子（209）的分集组合（212）来处理信号，从而仅提供比任何接收信号更可能地表示发送信号的结果信号。从结果信号中恢复数据符号（213）。

12. 发明授权

US5487091A Method for determining signal usability in a diversity receiver 失效
标题翻译：用于确定分集接收机中的信号可用性的方法
公开(公告)号：US5487091A
公开(公告)日：1996-01-23
申请号：US106170
申请日：1993-08-13
申请人： Steven C. Jasper , Mark A. Birchler
发明人： Steven C. Jasper , Mark A. Birchler
IPC分类号： H04B7/08 , H04B7/10
CPC分类号： H04B7/0845
摘要： A diversity receiver that receives modulated signals may determine signal usability of the received signals in the following manner. A modulated signal that includes a desired component and an undesired component is received in each receiver branch of the diversity receiver, wherein the desired component includes an originally transmitted signal and the undesired component includes noise and interference. Each receiver branch estimates the desired and undesired components and processes the modulated signal with a channel gain/phase estimator, a complex conjugator, and a complex mixer to produce a complex output. The complex output of each receiver branch is derived independently of the undesired component and combined to produce a diversity resultant. The diversity receiver estimates the signal usability of the diversity resultant based on the estimated desired components and the estimated undesired components.
摘要翻译：接收调制信号的分集接收机可以以下列方式确定接收信号的信号可用性。在分集接收机的每个接收器分支中接收包括期望分量和不期望分量的调制信号，其中期望分量包括最初发送的信号，不需要的分量包括噪声和干扰。每个接收机分支估计期望的和不期望的分量，并用信道增益/相位估计器，复共轭和复混合器处理调制信号以产生复数输出。每个接收器分支的复数输出独立于不期望的分量被导出并且被组合以产生分集结果。分集接收机基于估计的期望分量和估计的不期望的分量来估计分集结果的信号可用性。

13. 发明授权

US4893316A Digital radio frequency receiver 失效
标题翻译：数字射频接收机
公开(公告)号：US4893316A
公开(公告)日：1990-01-09
申请号：US890804
申请日：1986-07-24
申请人： Robert V. Janc , Steven C. Jasper , Lester A. Longley , Katherine L. Zebrose , William J. Turney , Ross J. Lillie
发明人： Robert V. Janc , Steven C. Jasper , Lester A. Longley , Katherine L. Zebrose , William J. Turney , Ross J. Lillie
IPC分类号： H03B27/00 , H03B28/00 , H03C3/40 , H03D1/22 , H03D3/00 , H03D7/16
CPC分类号： H03D3/007 , H03C3/40 , H03D1/2245 , H03D7/166 , H03B27/00 , H03B28/00 , H03D2200/005 , H03D2200/0052 , H03D3/006
摘要： A digital radio receiver is described. The digital receiver of the present invention contemplates a digital radio receiver which operates on a received analog signal which has been converted to a digital form after preselection at the output of the antenna. The digital receiver of the present invention comprises a preselector, a high-speed analog-to-digital (A/D) converter, a digitally implemented intermediate-frequency (IF) selectivity section having an output signal at substantially baseband frequencies, and digital signal processor (DSP) circuit performing demodulation and audio filtering. The radio architecture of the present invention is programmably adaptable to virtually every known modulation scheme and is particularly suitable for implementation on integrated circuits.
摘要翻译：描述数字无线电接收机。本发明的数字接收机设想一种数字无线电接收机，其对接收到的模拟信号进行操作，该接收的模拟信号在天线的输出处被预选之后被转换成数字形式。本发明的数字接收机包括预选器，高速模数（A / D）转换器，具有基本基带频率的输出信号的数字实现的中频（IF）选择部分，以及数字信号处理器（DSP）电路执行解调和音频滤波。本发明的无线电架构可编程地适应于几乎每个已知的调制方案，并且特别适用于集成电路上的实现。

14. 发明授权

US4701934A Method of doppler searching in a digital GPS receiver 失效
标题翻译：数字GPS接收机中多普勒搜索的方法
公开(公告)号：US4701934A
公开(公告)日：1987-10-20
申请号：US771754
申请日：1985-09-03
申请人： Steven C. Jasper
发明人： Steven C. Jasper
IPC分类号： G01S1/00 , G01S5/14 , G01S11/10 , G01S19/30 , G01S19/34 , H04K1/00
CPC分类号： G01S19/29 , G01S11/10
摘要： An improved method of doppler searching in a digital GPS receiver is described. According to the principles of the present invention, an N-point fourier transform is performed on samples of a down converted GPS signal representing the entire range of Doppler-shifted GPS carrier frequencies. The magnitude of the square of each of the output samples is calculated to produce N power quantities, corresponding to N search frequencies. The power quantities for each of the N search frequencies are then summed to produce N quantities proportional to average power. The maximum of the N-power quantities indicates the presence of the corresponding GPS signal.
摘要翻译：描述了一种在数字GPS接收机中进行多普勒搜索的改进方法。根据本发明的原理，对表示多普勒频移的GPS载波频率的整个范围的降频转换的GPS信号的采样进行N点傅立叶变换。计算每个输出样本的平方的大小，以产生对应于N个搜索频率的N个功率量。然后将N个搜索频率中的每一个的功率量相加以产生与平均功率成比例的N个量。 N个功率量的最大值表示存在相应的GPS信号。

15. 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。

16. 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。

17. 发明授权

US06396825B1 Method and apparatus for using a pseudo-random signal in a communication system 有权
标题翻译：在通信系统中使用伪随机信号的方法和装置
公开(公告)号：US06396825B1
公开(公告)日：2002-05-28
申请号：US09339416
申请日：1999-06-24
申请人： Steven C. Jasper , Mark A. Birchler , Debra A. Jones , Nicholas C. Oros
发明人： Steven C. Jasper , Mark A. Birchler , Debra A. Jones , Nicholas C. Oros
IPC分类号： H04J300
CPC分类号： G01S5/0221 , G01S5/14 , G01S11/02 , G01S2205/007
摘要： A base site (104) generates a pseudo-random signal based on at least one system parameter known to both the base site and a communication unit (112). The base site (104) then transmits the pseudo-random signal to the communication unit via an idle communication resource (102). Upon receiving the pseudo-random signal, the communication unit (112) determines at least one characteristic of the idle communication resource (102) using the pseudo-random signal.
摘要翻译：基站（104）基于基站和通信单元（112）已知的至少一个系统参数产生伪随机信号。基站（104）然后经由空闲通信资源（102）将伪随机信号发送到通信单元。在接收到伪随机信号时，通信单元（112）使用伪随机信号确定空闲通信资源（102）的至少一个特性。

18. 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。

19. 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。

20. 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。

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