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1. 发明申请

US20080130730A1 Refinement of Channel Response Calculation 有权
标题翻译：通道响应计算的细化
公开(公告)号：US20080130730A1
公开(公告)日：2008-06-05
申请号：US11662302
申请日：2005-09-09
申请人： James Chapman , Jason Taylor , Cyril Valadon
发明人： James Chapman , Jason Taylor , Cyril Valadon
IPC分类号： H04B17/00
CPC分类号： H04L25/0218
摘要： A scheme for determining which of a set of taps that can potentially be used to measure a channel impulse response should be used to estimate the channel impulse response.
摘要翻译：应该使用用于确定潜在地可用于测量信道脉冲响应的一组抽头中的哪一个的方案来估计信道脉冲响应。

2. 发明授权

US09258149B2 Refinement of channel response calculation 有权
标题翻译：通道响应计算的细化
公开(公告)号：US09258149B2
公开(公告)日：2016-02-09
申请号：US11662302
申请日：2005-09-09
申请人： James Chapman , Jason Taylor , Cyril Valadon
发明人： James Chapman , Jason Taylor , Cyril Valadon
IPC分类号： H03H7/30 , H03H7/38 , H04L25/02
CPC分类号： H04L25/0218
摘要： A scheme for determining which of a set of taps that can potentially be used to measure a channel impulse response should be used to estimate the channel impulse response.
摘要翻译：应该使用用于确定潜在地可用于测量信道脉冲响应的一组抽头中的哪一个的方案来估计信道脉冲响应。

3. 发明申请

US20080130729A1 Frequency Error Correction by Using Remodulation 有权
标题翻译：使用重新调制进行频率误差校正
公开(公告)号：US20080130729A1
公开(公告)日：2008-06-05
申请号：US11662574
申请日：2005-09-09
申请人： James Chapman , Simon Richardson , Cyril Valadon , Navid Fatemi-Ghomi
发明人： James Chapman , Simon Richardson , Cyril Valadon , Navid Fatemi-Ghomi
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。

4. 发明授权

US08139681B2 Frequency error correction by using remodulation 有权
标题翻译：使用再调制进行频率误差校正
公开(公告)号：US08139681B2
公开(公告)日：2012-03-20
申请号：US11662574
申请日：2005-09-09
申请人： James Chapman , Simon Richardson , Cyril Valadon , Navid Fatemi-Ghomi
发明人： James Chapman , Simon Richardson , Cyril Valadon , Navid Fatemi-Ghomi
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。

5. 发明申请

US20080101417A1 Method and Apparatus for Selecting a Channel Filter for a Communication System 有权
标题翻译：用于选择通信系统的信道滤波器的方法和装置
公开(公告)号：US20080101417A1
公开(公告)日：2008-05-01
申请号：US11662575
申请日：2005-09-09
申请人： James Chapman , Martin Leach , Cyril Valadon
发明人： James Chapman , Martin Leach , Cyril Valadon
IPC分类号： H04J1/02
CPC分类号： H04B1/1027 , H04B2001/1054
摘要： A signal receiver is arranged to process a portion of a received signal in each of a plurality of filter branches and to determine a quality metric for each branch. The configuration of a second filter for processing the entirety of the received signal is subsequently performed according to the determined quality metrics.
摘要翻译：信号接收器被布置为处理多个滤波器分支中的每一个中的接收信号的一部分并且确定每个分支的质量度量。随后根据确定的质量度量执行用于处理所述接收信号的整体的第二滤波器的配置。

6. 发明授权

US08743910B2 Method and apparatus for selecting a channel filter for a communication system 有权
标题翻译：用于选择通信系统的信道滤波器的方法和装置
公开(公告)号：US08743910B2
公开(公告)日：2014-06-03
申请号：US11662575
申请日：2005-09-09
申请人： James Chapman , Martin Leach , Cyril Valadon
发明人： James Chapman , Martin Leach , Cyril Valadon
IPC分类号： H04J1/02
CPC分类号： H04B1/1027 , H04B2001/1054
摘要： A signal receiver is arranged to process a portion of a received signal in each of a plurality of filter branches and to determine a quality metric for each branch. The configuration of a second filter for processing the entirety of the received signal is subsequently performed according to the determined quality metrics.
摘要翻译：信号接收器被布置为处理多个滤波器分支中的每一个中的接收信号的一部分并且确定每个分支的质量度量。随后根据确定的质量度量执行用于处理所述接收信号的整体的第二滤波器的配置。

7. 发明授权

US08340204B2 Soft decision enhancement 有权
标题翻译：软决策增强
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
IPC分类号： H04L5/12 , H04L23/02
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。

8. 发明申请

US20110211661A1 Metrics Calculations Utilizing Pre-Stored Values 有权
标题翻译：使用预存值的指标计算
公开(公告)号：US20110211661A1
公开(公告)日：2011-09-01
申请号：US13106616
申请日：2011-05-12
申请人： Cyril Valadon
发明人： Cyril Valadon
IPC分类号： H04L27/06
CPC分类号： H04L25/03292 , H04L25/03184 , H04L25/03235
摘要： A trellis processing technique for estimating a transmitted signal from a received signal acquired through a channel achieves a reduced computational structure when implementing a DDFSE-like branch metrics calculation by pre-storing computed values, which can be re-used. The technique involves storing differences between a received symbol and different products, each of which is a product of a channel coefficient corresponding to a least time delay and a different possible transmitted symbol. A summation of products is calculated, each product being a product of a possible transmitted signal symbol and a channel coefficient other than the channel coefficient corresponding to the least time delay, the summation being specific to a branch-start state in a trellis. The summation is combined with different stored differences in a calculation of branch metrics leading to different branch-end states in the trellis.
摘要翻译：用于通过信道获取的接收信号估计发射信号的网格处理技术通过预先存储可重新使用的计算值来实现类似DDFSE的分支量度计算，实现了减少的计算结构。该技术涉及存储接收符号和不同产品之间的差异，每个产品是与最小时间延迟对应的信道系数与不同可能发送符号的乘积。计算产品的总和，每个产品是可能的传输信号符号的乘积和不同于最小时间延迟的信道系数的通道系数，该总和特定于网格中的分支开始状态。总和与不同的存储差异结合在分支度量的计算中，导致网格中不同的分支结束状态。

9. 发明申请

US20100040176A1 Channel Impulse Response Estimate Management 有权
标题翻译：渠道冲动响应估算管理
公开(公告)号：US20100040176A1
公开(公告)日：2010-02-18
申请号：US12306411
申请日：2007-06-12
申请人： Cyril Valadon , Richard Lane , Neil Colin Campbell
发明人： Cyril Valadon , Richard Lane , Neil Colin Campbell
IPC分类号： H04L27/06 , H04B17/00 , H04L25/02
CPC分类号： H04L25/0216
摘要： A method of steering a channel estimation search window, the method comprising providing a series of raw CIR tap values to span a channel estimation search window containing a sub-window whose contents are intended to be passed for further processing to produce a refined CIR estimate, determining, amongst a plurality of groups of continuous tap values within the window, the group containing the largest amount of signal energy and time-shifting the window as necessary to arrange that the group so determined occupies the sub-window.
摘要翻译：一种导频信道估计搜索窗口的方法，所述方法包括提供一系列原始CIR抽头值，以跨越包含其内容旨在被传递的子窗口的信道估计搜索窗口，用于进一步处理以产生精确的CIR估计，在窗口内的多组连续抽头值中确定包含最大量的信号能量的组并根据需要对窗口进行时移，以使得如此确定的组占据子窗口。

10. 发明申请

US20090232263A1 Timing Errors 有权
标题翻译：计时错误
公开(公告)号：US20090232263A1
公开(公告)日：2009-09-17
申请号：US12300708
申请日：2007-05-10
申请人： Cyril Valadon , Martin Leach
发明人： Cyril Valadon , Martin Leach
IPC分类号： H04L7/00
CPC分类号： H04L7/0054
摘要： A method of analysing a sampled signal that is supplied for decimation, wherein the decimation process produces a decimated version of the signal and wherein the method comprises determining an adjustment, if any is required, to the sampling instant of the signal prior to decimation that will cause the frequency responses of the decimated signal and of a main alias to combine constructively at a given frequency.
摘要翻译：一种分析被提供用于抽取的采样信号的方法，其中所述抽取处理产生所述信号的抽取版本，并且其中所述方法包括确定所述信号在抽取之前的采样时刻（如果有的话）的调整导致抽取信号和主别名的频率响应在给定频率下建设性地结合。

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