-
公开(公告)号：US08139681B2
公开(公告)日：2012-03-20
申请号：US11662574
申请日：2005-09-09
IPC分类号： H03K9/00
CPC分类号： H04L27/2277 , H04L25/0224 , H04L2027/0032 , H04L2027/0055 , H04L2027/0061 , H04L2027/0067 , H04L2027/0095
摘要： A communications signal is received through a propagation channel, down-converted in frequency and then converted into a digital signal. The samples of the digital signal are processed to estimate the information conveyed by the communications signal. The estimated information is then used with knowledge about the propagation channel to model the samples of the digital signal. The modeled samples are compared with actual samples of the digital signal to deduce phase errors in the digital signal. The phase errors are then used to deduce a frequency error in the digital signal that can be used to correct the samples of the digital signal and to correct the down-conversion process.
摘要翻译： 通过传播信道接收通信信号，频率下变频，然后转换为数字信号。 对数字信号的采样进行处理，以估计通信信号传送的信息。 然后将估计的信息用于关于传播信道的知识以对数字信号的采样进行建模。 将建模样本与数字信号的实际采样进行比较，以推断数字信号中的相位误差。 然后使用相位误差来推导数字信号中的频率误差，该频率误差可用于校正数字信号的采样并纠正下变频过程。
-
公开(公告)号：US20070297372A1
公开(公告)日：2007-12-27
申请号：US11659600
申请日：2005-08-05
申请人： Navid Fatemi-Ghomi , Cyril Valadon
发明人： Navid Fatemi-Ghomi , Cyril Valadon
IPC分类号： H04B7/212
CPC分类号： H04L7/0054 , H04B7/2681
摘要： A telecommunications network participant, comprising means for digitising, as a series of samples, a received signal containing a succession of symbols, means for measuring time misalignment between the symbols and the samples and means for applying a fractional delay to the positions of the samples to reduce the misalignment.
摘要翻译： 一种电信网络参与者，包括用于数字化作为一系列样本的包含一系列符号的接收信号的装置，用于测量符号和样本之间的时间不对准的装置，以及用于将样本的位置应用分数延迟的装置 减少不对准。
-
公开(公告)号：US08265205B2
公开(公告)日：2012-09-11
申请号：US12198669
申请日：2008-08-26
CPC分类号： H04L25/0212 , H04L25/0224 , H04L25/03292 , H04L25/03305
摘要： A wireless receiver uses a joint detection Viterbi (JDV) algorithm to demodulate a signal that has a desired signal component and an interference signal component. The desired signal component includes a training sequence and at least one data field. The training sequence and a corresponding portion of the interference signal component is demodulated using the JDV algorithm to evaluate possible transmitted training sequences and interference signal sequences, and channel estimations for the desired signal component and the interference signal component are generated. The at least one data field is demodulated according to the JDV algorithm using the channel estimations as initial channel estimates for the JDV algorithm.
摘要翻译： 无线接收机使用联合检测维特比（JDV）算法来解调具有期望信号分量和干扰信号分量的信号。 期望的信号分量包括训练序列和至少一个数据字段。 使用JDV算法对训练序列和干扰信号分量的相应部分进行解调，以评估可能的传输训练序列和干扰信号序列，并且生成所需信号分量和干扰信号分量的信道估计。 至少一个数据字段根据JDV算法使用信道估计作为JDV算法的初始信道估计进行解调。
-
公开(公告)号：US08139627B2
公开(公告)日：2012-03-20
申请号：US11661632
申请日：2005-08-15
CPC分类号： H04L25/062 , H04L25/0212
摘要： A scheme for deducing a DC offset in a received signal burst acquired through a particular channel, wherein the received signal burst corresponds to a transmitted signal burst. An impulse response estimate of the channel is used to model how a known or recovered part of the transmitted burst would have been affected by passage through said channel in place of the corresponding part of the transmitted signal burst. The modelled part of the transmitted burst is then compared with the corresponding part of the received signal burst to deduce a DC offset present in the received signal burst.
摘要翻译： 一种用于推导通过特定信道获取的接收信号突发中的DC偏移的方案，其中所接收的信号脉冲串对应于发射的信号突发。 信道的脉冲响应估计用于建模传送的脉冲串的已知或恢复的部分将如何通过所述信道而不是所传输的信号脉冲串的相应部分而受到影响。 然后将所发送脉冲串的建模部分与接收信号脉冲串的对应部分进行比较，以推断存在于接收信号脉冲串中的DC偏移。
-
公开(公告)号：US20080192862A1
公开(公告)日：2008-08-14
申请号：US11661632
申请日：2005-08-15
CPC分类号： H04L25/062 , H04L25/0212
摘要： A scheme for deducing a DC offset in a received signal burst acquired through a particular channel, wherein the received signal burst corresponds to a transmitted signal burst. An impulse response estimate of the channel is used to model how a known or recovered part of the transmitted burst would have been affected by passage through said channel in place of the corresponding part of the transmitted signal burst. The modeled part of the transmitted burst is then compared with the corresponding part of the received signal burst to deduce a DC offset present in the received signal burst.
摘要翻译： 一种用于推导通过特定信道获取的接收信号突发中的DC偏移的方案，其中所接收的信号脉冲串对应于发射的信号突发。 信道的脉冲响应估计用于建模传送的脉冲串的已知或恢复的部分将如何通过所述信道而不是所传输的信号脉冲串的相应部分而受到影响。 然后将所发送脉冲串的建模部分与接收信号脉冲串的对应部分进行比较，以推断存在于接收信号脉冲串中的DC偏移。
-
公开(公告)号：US08340204B2
公开(公告)日：2012-12-25
申请号：US11660219
申请日：2005-08-05
申请人： Navid Fatemi-Ghomi , Cyril Valadon
发明人： Navid Fatemi-Ghomi , Cyril Valadon
CPC分类号： H04L1/0059 , H03M13/3955 , H03M13/4138 , H04L1/0054
摘要： A Viterbi trellis processing technique in which soft decisions and hard decisions are derived from a received signal and the soft decisions are enhanced by being modified using the hard decisions. A log likelihood ratio for a bit of the received signal can be derived by grouping candidate metrics associated with the decision that the bit has a first state, grouping candidate metrics associated with the decision that the bit has a second state, applying respective functions to the groups and calculating the difference of the function values.
摘要翻译： 维特比网格处理技术，其中软判决和硬判决从接收到的信号导出，并且通过使用硬判决来修改软判决来增强。 可以通过对与该位具有第一状态的判定相关联的候选度量进行分组来导出接收信号的位的对数似然比，将与该位具有第二状态的判定相关联的候选度量分组，将相应的函数应用于 组和计算功能值的差异。
-
公开(公告)号：US20090304121A1
公开(公告)日：2009-12-10
申请号：US12198669
申请日：2008-08-26
IPC分类号： H04L27/06
CPC分类号： H04L25/0212 , H04L25/0224 , H04L25/03292 , H04L25/03305
摘要： A wireless receiver uses a joint detection Viterbi (JDV) algorithm to demodulate a signal that has a desired signal component and an interference signal component. The desired signal component includes a training sequence and at least one data field. The training sequence and a corresponding portion of the interference signal component is demodulated using the JDV algorithm to evaluate possible transmitted training sequences and interference signal sequences, and channel estimations for the desired signal component and the interference signal component are generated. The at least one data field is demodulated according to the JDV algorithm using the channel estimations as initial channel estimates for the JDV algorithm.
摘要翻译： 无线接收机使用联合检测维特比（JDV）算法来解调具有期望信号分量和干扰信号分量的信号。 期望的信号分量包括训练序列和至少一个数据字段。 使用JDV算法对训练序列和干扰信号分量的相应部分进行解调，以评估可能的传输训练序列和干扰信号序列，并且生成所需信号分量和干扰信号分量的信道估计。 至少一个数据字段根据JDV算法使用信道估计作为JDV算法的初始信道估计进行解调。
-
公开(公告)号：US20080130729A1
公开(公告)日：2008-06-05
申请号：US11662574
申请日：2005-09-09
IPC分类号： H04B17/00
CPC分类号： H04L27/2277 , H04L25/0224 , H04L2027/0032 , H04L2027/0055 , H04L2027/0061 , H04L2027/0067 , H04L2027/0095
摘要： A communications signal is received through a propagation channel, down-converted in frequency and then converted into a digital signal. The samples of the digital signal are processed to estimate the information conveyed by the communications signal. The estimated information is then used with knowledge about the propagation channel to model the samples of the digital signal. The modeled samples are compared with actual samples of the digital signal to deduce phase errors in the digital signal. The phase errors are then used to deduce a frequency error in the digital signal that can be used to correct the samples of the digital signal and to correct the down-conversion process.
摘要翻译： 通过传播信道接收通信信号，频率下变频，然后转换为数字信号。 对数字信号的采样进行处理，以估计通信信号传送的信息。 然后将估计的信息用于关于传播信道的知识以对数字信号的采样进行建模。 将建模样本与数字信号的实际采样进行比较，以推断数字信号中的相位误差。 然后使用相位误差来推导数字信号中的频率误差，该频率误差可用于校正数字信号的采样并纠正下变频过程。
-
公开(公告)号：US07974262B2
公开(公告)日：2011-07-05
申请号：US11659600
申请日：2005-08-05
申请人： Navid Fatemi-Ghomi , Cyril Valadon
发明人： Navid Fatemi-Ghomi , Cyril Valadon
IPC分类号： H04J3/06
CPC分类号： H04L7/0054 , H04B7/2681
摘要： A telecommunications network participant, comprising means for digitising, as a series of samples, a received signal containing a succession of symbols, means for measuring time misalignment between the symbols and the samples and means for applying a fractional delay to the positions of the samples to reduce the misalignment.
摘要翻译： 一种电信网络参与者，包括用于数字化作为一系列样本的包含一系列符号的接收信号的装置，用于测量符号和样本之间的时间不对准的装置，以及用于将样本的位置应用分数延迟的装置 减少不对准。
-
公开(公告)号：US20090304122A1
公开(公告)日：2009-12-10
申请号：US12198702
申请日：2008-08-26
CPC分类号： H04L25/0212 , H04L25/0216 , H04L25/0224 , H04L25/03191 , H04L25/03292 , H04L25/03305
摘要： A receiver adaptively selects between a joint detection Viterbi demodulator and a second Viterbi demodulator to demodulate a received signal based on at least one characteristic of the received signal. The joint detection Viterbi demodulator jointly demodulates a desired signal component and an interference signal component of the received signal, and the second Viterbi demodulator demodulates the desired signal component without demodulating the interference signal component.
摘要翻译： 接收机在联合检测维特比解调器和第二维特比解调器之间自适应地选择以基于接收信号的至少一个特性解调接收信号。 联合检测维特比解调器联合地解调接收信号的期望信号分量和干扰信号分量，第二维特比解调器解调所需信号分量而不解调干扰信号分量。
-
-
-
-
-
-
-
-
-
搜索结果
11 条记录 (耗时 0.013 秒)