专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5195106A Method for channel adaptive detecting/equalize 失效
标题翻译：用于通道自适应检测/均衡的方法
公开(公告)号：US5195106A
公开(公告)日：1993-03-16
申请号：US612656
申请日：1990-11-14
申请人： Henry L. Kazecki , Steven H. Goode , Donald W. Dennis , James C. Baker , Kevin L. Baum , Bruce D. Mueller
发明人： Henry L. Kazecki , Steven H. Goode , Donald W. Dennis , James C. Baker , Kevin L. Baum , Bruce D. Mueller
IPC分类号： H04B7/005 , H04L27/22
CPC分类号： H04L27/22 , H04B7/005
摘要： In a communications device, two coherent detection algorithms (102 and 103), one of which has a decision feedback equalizer (103), and a detector selection algorithm (104) are used to dynamically select a detector depending on whether delay spread distortion is present. First the correlation of the detector without the equalizer (102) is measured. If this correlation is greater than a predetermined threshold, the data from that detector (102) is used by the communications device. If the correlation is less than the threshold, the correlation of the detector with the equalizer (103) is measured. If this is less than the correlation of the detector without the equalizer (102), the data from the detector without the equalizer (102) is used, otherwise the data is taken from the equalizer (103).
摘要翻译：在通信设备中，使用两个相干检测算法（102和103），其中之一具有判决反馈均衡器（103）和检测器选择算法（104），以根据是否存在延迟扩展失真来动态地选择检测器。首先测量没有均衡器（102）的检测器的相关性。如果该相关性大于预定阈值，则来自该检测器（102）的数据由通信设备使用。如果相关性小于阈值，则测量检测器与均衡器（103）的相关性。如果这小于没有均衡器（102）的检测器的相关性，则使用来自没有均衡器（102）的检测器的数据，否则数据取自均衡器（103）。

2. 发明授权

US5375143A Method for channel adaptive detecting/equalizing 失效
标题翻译：通道自适应检测/均衡方法
公开(公告)号：US5375143A
公开(公告)日：1994-12-20
申请号：US985474
申请日：1992-12-03
申请人： Henry L. Kazecki , Steven H. Goode , Donald W. Dennis , James C. Baker , Kevin L. Baum , Bruce D. Mueller
发明人： Henry L. Kazecki , Steven H. Goode , Donald W. Dennis , James C. Baker , Kevin L. Baum , Bruce D. Mueller
IPC分类号： H04B7/005 , H04L27/22 , H03H7/30
CPC分类号： H04B7/005 , H04L27/22
摘要： In a communications device, two coherent detection algorithms (102 and 103), one of which has a decision feedback equalizer (103), and a detector selection algorithm (104) are used to dynamically select a detector depending on whether delay spread distortion is present. First the correlation of the detector without the equalizer (102) is measured. If this correlation is greater than a predetermined threshold, the data from that detector (102) is used by the communications device. If the correlation is less than the threshold, the correlation of the detector with the equalizer (103) is measured. If this is less than the correlation of the detector without the equalizer (102), the data from the detector without the equalizer (102) is used, otherwise the data is taken from the equalizer (103). In any case, if the detector without the equalizer is used, the detector with the equalizer is turned off.
摘要翻译：在通信设备中，使用两个相干检测算法（102和103），其中之一具有判决反馈均衡器（103）和检测器选择算法（104），以根据是否存在延迟扩展失真来动态地选择检测器。首先测量没有均衡器（102）的检测器的相关性。如果该相关性大于预定阈值，则来自该检测器（102）的数据由通信设备使用。如果相关性小于阈值，则测量检测器与均衡器（103）的相关性。如果这小于没有均衡器（102）的检测器的相关性，则使用来自没有均衡器（102）的检测器的数据，否则数据取自均衡器（103）。在任何情况下，如果使用没有均衡器的检测器，则使用均衡器的检测器关闭。

3. 发明授权

US06201795B1 Method and apparatus for mitigating interference in a communication system 失效
标题翻译：减轻通信系统干扰的方法和装置
公开(公告)号：US06201795B1
公开(公告)日：2001-03-13
申请号：US08897398
申请日：1997-07-21
申请人： Kevin L. Baum , Bruce D. Mueller , Mark C. Cudak
发明人： Kevin L. Baum , Bruce D. Mueller , Mark C. Cudak
IPC分类号： H04J314
CPC分类号： H04W72/085 , H04W16/14 , H04W24/00 , H04W36/06 , H04W36/30 , H04W72/082
摘要： A communication system (100) that includes a base unit (101) and a subscriber unit (e.g., 103) employs a method (400) and apparatus (101) for mitigating interference (135) therein. The base unit (101) receives an uplink communication signal from the subscriber unit (103) at an uplink frequency and conveys a downlink communication signal to the subscriber unit (103) at a downlink frequency. Upon receiving (403) an uplink communication signal from the subscriber unit (103), the base unit (101) determines (405) a quality metric for the uplink frequency. When the quality metric is below a quality threshold (407), the base unit (101) and the subscriber unit (103) transfer (415) the communication signal to an alternate uplink frequency, while the downlink frequency remains unchanged.
摘要翻译：包括基站单元（101）和用户单元（例如，103）的通信系统（100）采用减轻其中的干扰（135）的方法（400）和装置（101）。基站装置（101）以上行频率从用户单元（103）接收上行通信信号，并以下行链路频率向用户单元（103）传送下行通信信号。在从用户单元（103）接收（403）上行链路通信信号时，基本单元（101）确定（405）上行链路频率的质量度量。当质量度量低于质量阈值（407）时，基站单元（101）和用户单元（103）将通信信号传送（415）到备用上行链路频率，而下行链路频率保持不变。

4. 发明授权

US5465412A Apparatus and method for determining a point in time for detecting a sampled signal in a receiver 失效
标题翻译：用于确定在接收机中检测采样信号的时间点的装置和方法
公开(公告)号：US5465412A
公开(公告)日：1995-11-07
申请号：US64182
申请日：1993-05-19
申请人： Bruce D. Mueller , Kevin L. Baum
发明人： Bruce D. Mueller , Kevin L. Baum
IPC分类号： H04L27/00 , H04B1/10 , H04L27/38
CPC分类号： H04B1/10
摘要： In a receiver (101) that receives a signal (103) subsequent to transmission thereof by a transmitter on a communication channel, an apparatus and method for determining a point in time for detecting the signal, sampled at multiple points in time, to produce a detected signal (112). The communication channel is modeled, at the multiple points in time, responsive to the sampled signal (110) to produce signal and noise channel models (209) and (204), respectively. Signal and noise values (210) and (205) indicative of the quantity of signal and noise in the signal and noise channel models, respectively, are generated. A sampling point selector (203) selects, from among the multiple points in time, a point in time (111), corresponding to a determined minimum noise value (206) or a determined maximum signal to noise ratio value (213), for detecting the sampled signal (110) to produce the detected signal (112).
摘要翻译：在接收机（101）中，在由通信信道上的发射机发送信号之后接收信号（103），用于确定用于检测在多个时间点采样的信号的时间点的装置和方法，以产生检测信号（112）。在多个时间点上对通信信道进行建模，响应于采样信号（110）分别产生信号和噪声信道模型（209）和（204）。产生分别指示信号和噪声信道模型中的信号和噪声量的信号和噪声值（210）和（205）。采样点选择器（203）从多个时间点中选择对应于确定的最小噪声值（206）或确定的最大信噪比值（213）的时间点（111），用于检测采样信号（110）以产生检测信号（112）。

5. 发明授权

US5263052A Viterbi equalizer for radio receiver 失效
标题翻译：无线电接收机的维特比均衡器
公开(公告)号：US5263052A
公开(公告)日：1993-11-16
申请号：US767961
申请日：1991-09-30
申请人： David E. Borth , Bruce D. Mueller , Kevin L. Baum
发明人： David E. Borth , Bruce D. Mueller , Kevin L. Baum
IPC分类号： H04L25/08 , H03H15/00 , H03H17/00 , H03H21/00 , H03M13/23 , H04B3/04 , H04L25/03 , H04L27/22 , H04L5/12
CPC分类号： H04L27/22 , H04L25/03203 , H04L2025/03401 , H04L25/03197
摘要： A Viterbi equalizer for decoding a .pi./4 DQPSK modulated signal. Because symbol values of adjacent symbols of a .pi./4 DQPSK signal are offset in phase relative to one another, allowable values of succeeding states of a .pi./4 DQPSK signal are four in number. The signal paths of the Viterbi equalizer are thereby limited in number to four allowable next-states, and the Viterbi equalizer is operative to select certain ones of the paths connecting the states at the adjacent time intervals as survivor paths to form maximum likelihood paths thereby.
摘要翻译：用于对pi / 4 DQPSK调制信号进行解码的维特比均衡器。由于pi / 4 DQPSK信号的相邻符号的符号值相对于彼此相位偏移，因此pi / 4 DQPSK信号的后续状态的允许值为4。因此，维特比均衡器的信号路径被限制为四个允许的下一状态，并且维特比均衡器用于选择将相邻时间间隔处的状态连接的某些路径作为幸存路径，从而形成最大似然路径。

6. 发明授权

US5379324A System and method for calculating channel gain and noise variance of a communication channel 失效
标题翻译：用于计算通信信道的信道增益和噪声方差的系统和方法
公开(公告)号：US5379324A
公开(公告)日：1995-01-03
申请号：US008249
申请日：1993-01-25
申请人： Bruce D. Mueller , Kevin L. Baum , David E. Borth , Phillip D. Rasky , Eric H. Winter
发明人： Bruce D. Mueller , Kevin L. Baum , David E. Borth , Phillip D. Rasky , Eric H. Winter
IPC分类号： H04B3/04 , H04B7/00 , H04B7/005 , H04B7/08 , H04L1/02 , H04L25/06 , H04L27/01 , H04L27/22 , H04L27/06
CPC分类号： H04L27/22 , H04B7/0845 , H04L25/067
摘要： A system and method for correcting for Rayleigh interference of a signal transmitted upon a multi-path channel. The system adaptively calculates values of channel gain and noise variance of the channel upon which the signal is transmitted, and generates signals indicative of such calculations which are supplied to a decoder. The system may be utilized to form a portion of a coherent, or noncoherent receiver which receives encoded and differentially-encoded signals.
摘要翻译：一种用于校正在多路径信道上发送的信号的瑞利干扰的系统和方法。系统自适应地计算发送信号的信道的信道增益和噪声方差的值，并产生指示这样的计算的信号，这些信号被提供给解码器。该系统可以用于形成接收编码和差分编码的信号的相干或非相干接收机的一部分。

7. 发明授权

US5446763A Apparatus and method for converting soft symbols into soft bits 失效
标题翻译：将软符号转换为软位的装置和方法
公开(公告)号：US5446763A
公开(公告)日：1995-08-29
申请号：US057600
申请日：1993-05-06
申请人： Kevin L. Baum , Bruce D. Mueller
发明人： Kevin L. Baum , Bruce D. Mueller
IPC分类号： H04B3/04 , H04B7/005 , H04B7/08 , H04L1/02 , H04L25/06 , H04L27/01 , H04L27/22 , H04L27/06
CPC分类号： H04B7/0845 , H04L25/067 , H04L27/22
摘要： In a communication unit (200) that coherently demodulates differentially-encoded modulated signals (201) to produce soft symbols (210) including first and second soft symbols, a method and associated apparatus, for use by the communication unit (200), converts the soft symbols (210) into soft bits (212). A quality measure (305) is determined for at least the first soft symbol (210) indicating when the quality for the first soft symbol (210) is favorable and when the quality for the first soft symbol (210) is unfavorable. The first and second soft symbols (210) are processed in a forward direction in time (208) to produce the soft bits (212) when the quality measure (305) for the first soft symbol (210) is favorable. The first and second soft symbols (210) are processed in a reverse direction in time (209) to produce the soft bits (212) when the quality measure (305) for the first soft symbol (210) is unfavorable.
摘要翻译：在通信单元（200）中，相干地解调差分编码的调制信号（201）以产生包括第一和第二软符号的软符号（210），由通信单元（200）使用的方法和相关联的装置，软符号（210）变成软比特（212）。确定至少第一软符号（210）的质量测量（305），指示第一软符号（210）的质量何时是有利的，以及当第一软符号（210）的质量不利时。当第一软符号（210）的质量测量（305）有利时，第一和第二软符号（210）在时间（208）中以正向方向被处理以产生软比特（212）。当第一软符号（210）的质量测量（305）不利时，第一和第二软符号（210）在时间（209）中以相反的方向被处理以产生软比特（212）。

8. 发明授权

US5214675A System and method for calculating channel gain and noise variance of a communication channel 失效
标题翻译：用于计算通信信道的通道增益和噪声变化的系统和方法
公开(公告)号：US5214675A
公开(公告)日：1993-05-25
申请号：US724663
申请日：1991-07-02
申请人： Bruce D. Mueller , Kevin L. Baum , David E. Borth , Phillip D. Rasky , Eric H. Winter
发明人： Bruce D. Mueller , Kevin L. Baum , David E. Borth , Phillip D. Rasky , Eric H. Winter
IPC分类号： H04B3/04 , H04B7/00 , H04B7/005 , H04B7/08 , H04L1/02 , H04L25/06 , H04L27/01 , H04L27/22
CPC分类号： H04L27/22 , H04B7/0845 , H04L25/067
摘要： A system and method for correcting for Rayleigh interference of a signal transmitted upon a multi-path channel. The system adaptively calculates values of channel gain and noise variance of the channel upon which the signal is transmitted, and generates signals indicative of such calculations which are supplied to a decoder. The system may be utilized to form a portion of a coherent, or noncoherent receiver which receives encoded and differentially-encoded signals.
摘要翻译：一种用于校正在多路径信道上发送的信号的瑞利干扰的系统和方法。系统自适应地计算发送信号的信道的信道增益和噪声方差的值，并产生指示这样的计算的信号，这些信号被提供给解码器。该系统可以用于形成接收编码和差分编码的信号的相干或非相干接收机的一部分。

9. 发明授权

US5615233A Method for channel estimation using individual adaptation 失效
标题翻译：使用个人适应的信道估计方法
公开(公告)号：US5615233A
公开(公告)日：1997-03-25
申请号：US916757
申请日：1992-07-22
申请人： Kevin L. Baum , Bruce D. Mueller
发明人： Kevin L. Baum , Bruce D. Mueller
IPC分类号： H03H21/00 , H04B1/10 , H04B7/005 , H04L25/02 , H04B1/04 , H03H7/30
CPC分类号： H03H21/0012 , H04B1/1081 , H04B7/005 , H04L25/0212 , H04L25/025
摘要： The process of the present invention computes the update to the least mean square channel estimator taps. The update coefficient for each tap is computed independently based on the power of each tap relative to the main tap power.
摘要翻译：本发明的过程计算对最小均方通道估计器抽头的更新。基于相对于主抽头功率的每个抽头的功率，独立地计算每个抽头的更新系数。

10. 发明授权

US5233633A Automatic frequency control by an adaptive filter 失效
标题翻译：通过自适应滤波器进行自动频率控制
公开(公告)号：US5233633A
公开(公告)日：1993-08-03
申请号：US15666
申请日：1993-02-09
申请人： Kevin L. Baum , Bruce D. Mueller
发明人： Kevin L. Baum , Bruce D. Mueller
IPC分类号： H03H21/00 , H03J7/04
CPC分类号： H03H21/0043 , H03J7/04
摘要： The process of the present invention generates an optimum automatic frequency control signal in an apparatus that has a plurality of adaptive algorithms, each adaptive algorithm having a reference signal with an associated frequency dither. The process starts by comparing the performance of each of the plurality of adaptive algorithms. This difference is input to a comparator where it is compared to zero. This delta signal then modifies the numerically controlled oscillator frequency. After several iterations, the frequency offset is reduced to substantially zero.
摘要翻译：本发明的方法在具有多个自适应算法的装置中产生最佳自动频率控制信号，每个自适应算法具有具有相关频率抖动的参考信号。该过程通过比较多个自适应算法中的每一个的性能开始。该差异被输入到比较器，其比较为零。该delta信号然后修改数控振荡器频率。经过几次迭代，频率偏移减小到基本为零。

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