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

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。

2. 发明授权

US5361400A Apparatus and method for removing distortion in a received signal 失效
标题翻译：用于去除接收信号中的失真的装置和方法
公开(公告)号：US5361400A
公开(公告)日：1994-11-01
申请号：US104303
申请日：1993-08-09
申请人： Henry L. Kazecki , Steven H. Goode , Donald W. Dennis
发明人： Henry L. Kazecki , Steven H. Goode , Donald W. Dennis
IPC分类号： H04L27/01 , H04L27/227 , H04B15/00 , H03H7/30 , H04B1/10
CPC分类号： H04L27/01 , H04L27/227
摘要： In a receiver an apparatus and method substantially reduces time dispersion and multipath distortion in a received signal. An equalizer (109), including taps having gain coefficients, produces an equalized signal (110) responsive to the received signal (107) and an adaptive process signal (137), wherein the gain coefficients are adjusted responsive to the adaptive process signal (137). A first mixer (111) mixes the equalized signal (110) and a reference carrier signal (115) to produce a recovered modulated signal (119). A detector (112) detects an estimate signal (129) responsive to the recovered modulated signal (119). An error signal generator (139) generates an error signal (141) responsive to a difference between the recovered modulated signal (119) and the estimate signal (129). A second mixer (147) mixes the error signal (141) and the reference carrier signal (115) to produce the adaptive process signal (137). In a preferred embodiment, a third mixer (153) mixes the estimate signal (129) and the reference carrier signal (115) to produce a feedback signal (135) for at least one tap. The present invention advantageously permits the equalizer (109) and the detector (112) to optimally perform their respective functions while coupled together to maximize the receiver's performance.
摘要翻译：在接收机中，装置和方法基本上减少接收信号中的时间色散和多径失真。包括具有增益系数的抽头的均衡器（109）响应于接收信号（107）和自适应处理信号（137）产生均衡信号（110），其中响应于自适应处理信号（137）调整增益系数）。第一混频器（111）混合均衡信号（110）和参考载波信号（115）以产生恢复的调制信号（119）。检测器（112）响应于恢复的调制信号（119）检测估计信号（129）。误差信号发生器（139）响应于恢复的调制信号（119）和估计信号（129）之间的差产生误差信号（141）。第二混频器（147）混合误差信号（141）和参考载波信号（115）以产生自适应处理信号（137）。在优选实施例中，第三混频器（153）混合估计信号（129）和参考载波信号（115）以产生至少一个抽头的反馈信号（135）。本发明有利地允许均衡器（109）和检测器（112）在耦合在一起时最佳地执行它们各自的功能，以使接收机的性能最大化。

3. 发明授权

US5058136A Coherent detection for QPSK modulation 失效
标题翻译： QPSK调制的相干检测
公开(公告)号：US5058136A
公开(公告)日：1991-10-15
申请号：US628977
申请日：1990-12-17
申请人： Henry L. Kazecki , Donald W. Dennis , Steven H. Goode
发明人： Henry L. Kazecki , Donald W. Dennis , Steven H. Goode
IPC分类号： H04L27/227
CPC分类号： H04L27/2272
摘要： The .pi./4-QPSK coherent detector of the present invention has a vector input and an output comprising recovered data in bit pair form. The .pi./4-QPSK coherent detector recovers data that has been encoded in an amplitude modulated vector's phase angle. The .pi./4-QPSK coherent detector detects the .pi./4-QPSK constellation of the incoming modulated signal and outputs the recovered data stream.
摘要翻译：本发明的pi / 4-QPSK相干检测器具有矢量输入和包括位对形式的恢复数据的输出。 pi / 4-QPSK相干检测器恢复已经以幅度调制矢量的相位角编码的数据。 pi / 4-QPSK相干检测器检测输入调制信号的pi / 4-QPSK星座并输出恢复的数据流。

4. 发明授权

US4977616A Antenna selection control circuit 失效
标题翻译：天线选择控制电路
公开(公告)号：US4977616A
公开(公告)日：1990-12-11
申请号：US428429
申请日：1989-10-26
申请人： Donald L. Linder , Steve H. Goode , Henry L. Kazecki , Donald W. Dennis , James C. Baker
发明人： Donald L. Linder , Steve H. Goode , Henry L. Kazecki , Donald W. Dennis , James C. Baker
IPC分类号： H04B7/08
CPC分类号： H04B7/0814 , H04B7/0808 , H04B7/0811
摘要： An antenna switch control circuit for use in achieving antenna selection diversity in TDM RF receivers. RSSI for at least one antenna is monitored during time slots containing information not of interest. This information can then be compared with other antenna performance information to allow a selection to be made such that the receiver generally operates with the antenna receiving the strongest signal. In one embodiment, all possible antennas are monitored during a time slot containing information not of interest. In another embodiment, RSSI for the selected antenna can be monitored during the time slot of interest, such that antenna selection can again be varied should the selected antenna diminish in performance.
摘要翻译：一种天线切换控制电路，用于实现TDM射频接收机中的天线选择分集。在包含不感兴趣的信息的时隙期间监视至少一个天线的RSSI。然后可以将该信息与其他天线性能信息进行比较，以允许进行选择，使得接收机通常以接收最强信号的天线进行操作。在一个实施例中，在包含不感兴趣的信息的时隙期间监视所有可能的天线。在另一个实施例中，可以在感兴趣的时隙期间监视所选天线的RSSI，使得如果所选天线的性能降低，天线选择可以再次变化。

5. 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）。

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