公开(公告)号：US20080014881A1

公开(公告)日：2008-01-17

申请号：US11456998

申请日：2006-07-12

申请人： Karin Engdahl ,  Lennart Andersson

发明人： Karin Engdahl ,  Lennart Andersson

IPC分类号： H04B1/18

CPC分类号： H04B1/7117 ,  H04L2027/0055 ,  H04L2027/0065

摘要： Whether relative velocity between a transmitter and a receiver is higher than a predetermined amount is detected. This involves using a Doppler estimation technique to generate an estimate of Doppler spread, {circumflex over (f)}D(1), based on a received signal, and using an alternative velocity estimation technique to generate an estimate of velocity, {circumflex over (v)}, based on the received signal, wherein the alternative velocity estimation technique differs from the Doppler estimation technique. A plurality of estimates, including at least the estimate of Doppler spread and the estimate of velocity, are used to detect whether the relative velocity between the transmitter and the receiver is higher than the predetermined amount. The alternative velocity estimation technique may, for example, be a second Doppler estimation technique that differs from the other Doppler estimation technique.

摘要翻译： 检测发射器和接收器之间的相对速度是否高于预定量。 这涉及使用多普勒估计技术来基于接收到的信号产生多普勒扩展估计，并且使用替代速度估计技术来产生 基于接收信号的速度估计v，其中替代速度估计技术不同于多普勒估计技术。 使用至少包括多普勒扩展的估计和速度估计的多个估计来检测发射机和接收机之间的相对速度是否高于预定量。 替代的速度估计技术可以例如是与其他多普勒估计技术不同的第二多普勒估计技术。

公开(公告)号：US07647049B2

公开(公告)日：2010-01-12

申请号：US11456998

申请日：2006-07-12

申请人： Karin Engdahl ,  Lennart Andersson

发明人： Karin Engdahl ,  Lennart Andersson

IPC分类号： H04Q7/20

CPC分类号： H04B1/7117 ,  H04L2027/0055 ,  H04L2027/0065

摘要： Whether relative velocity between a transmitter and a receiver is higher than a predetermined amount is detected. This involves using a Doppler estimation technique to generate an estimate of Doppler spread, {circumflex over (f)}D(1), based on a received signal, and using an alternative velocity estimation technique to generate an estimate of velocity, {circumflex over (v)}, based on the received signal, wherein the alternative velocity estimation technique differs from the Doppler estimation technique. A plurality of estimates, including at least the estimate of Doppler spread and the estimate of velocity, are used to detect whether the relative velocity between the transmitter and the receiver is higher than the predetermined amount. The alternative velocity estimation technique may, for example, be a second Doppler estimation technique that differs from the other Doppler estimation technique.

摘要翻译： 检测发射器和接收器之间的相对速度是否高于预定量。 这涉及使用多普勒估计技术来基于接收信号产生多普勒扩展的估计{（f）} D（1），并使用替代速度估计技术来生成速度估计， （v）}，其中替代速度估计技术不同于多普勒估计技术。 使用至少包括多普勒扩展的估计和速度估计的多个估计来检测发射机和接收机之间的相对速度是否高于预定量。 替代的速度估计技术可以例如是与其他多普勒估计技术不同的第二多普勒估计技术。

公开(公告)号：US20080095279A1

公开(公告)日：2008-04-24

申请号：US11550901

申请日：2006-10-19

申请人： Andres Reial ,  Karin Engdahl ,  Bo Goransson

发明人： Andres Reial ,  Karin Engdahl ,  Bo Goransson

IPC分类号： H04L27/06

CPC分类号： H04B1/712 ,  H04B2201/709727 ,  H04L25/03343 ,  H04L2025/03426

摘要： A subset of modeled impairment correlation terms are selected for use in received signal processing. According to one embodiment, a subset of modeled impairment correlation terms is selected and a composite impairment correlation term is determined based on the subset of modeled impairment correlation terms. The composite impairment correlation term may be determined by scaling the modeled impairment correlation terms included in the subset by respective model fitting parameters. The scaled modeled impairment correlation terms are then combined to form the composite impairment correlation term. The subset of modeled impairment correlation terms may be selected based on their respective model fitting parameters. In one embodiment, the modeled impairment terms having a model fitting parameter that satisfy a threshold are included in the subset while those that do not are excluded. The composite impairment correlation term may be used for received signal processing, e.g., demodulation or signal-to-interference estimation.

摘要翻译： 选择模型损害相关项的子集用于接收信号处理。 根据一个实施例，选择模型化损害相关项的子集，并且基于建模的损害相关项的子集来确定复合损害相关项。 复合损害相关项可以通过用相应的模型拟合参数缩放包括在子集中的建模损伤相关项来确定。 然后将缩放的建模的损伤相关项组合以形成复合损害相关项。 可以基于它们各自的模型拟合参数来选择建模的损伤相关项的子集。 在一个实施例中，具有满足阈值的模型拟合参数的建模的损伤项包括在子集中，而不被排除。 复合损害相关项可以用于接收信号处理，例如解调或信号对干扰估计。

公开(公告)号：US08184675B2

公开(公告)日：2012-05-22

申请号：US11457029

申请日：2006-07-12

申请人： Karin Engdahl

发明人： Karin Engdahl

IPC分类号： H04B1/707 ,  H04L27/06

CPC分类号： H04B1/7117 ,  H04B1/7087 ,  H04B2201/709727 ,  H04L2027/0055 ,  H04L2027/0065

摘要： Respective residual frequency offsets of de-spread correlated signals derived from a received communication signal are determined and used to improve receiver performance in high-velocity situations. The knowledge of the residual frequency offsets of the respective fingers can be used for adaptive AFC combining, improved velocity estimation, and adaptive residual frequency offset compensation.

摘要翻译： 确定从接收的通信信号导出的解扩展相关信号的各自的残余频率偏移，并用于在高速情况下提高接收机性能。 各个手指的残余频率偏移的知识可以用于自适应AFC组合，改进的速度估计和自适应残余频率偏移补偿。

公开(公告)号：US07751511B2

公开(公告)日：2010-07-06

申请号：US11550901

申请日：2006-10-19

申请人： Andres Reial ,  Karin Engdahl ,  Bo Göransson

发明人： Andres Reial ,  Karin Engdahl ,  Bo Göransson

IPC分类号： H03D1/04 ,  H03D1/06 ,  H03K5/01 ,  H03K6/04 ,  H04B1/10 ,  H04L1/00 ,  H04L25/08

CPC分类号： H04B1/712 ,  H04B2201/709727 ,  H04L25/03343 ,  H04L2025/03426

摘要： A subset of modeled impairment correlation terms are selected for use in received signal processing. According to one embodiment, a subset of modeled impairment correlation terms is selected and a composite impairment correlation term is determined based on the subset of modeled impairment correlation terms. The composite impairment correlation term may be determined by scaling the modeled impairment correlation terms included in the subset by respective model fitting parameters. The scaled modeled impairment correlation terms are then combined to form the composite impairment correlation term. The subset of modeled impairment correlation terms may be selected based on their respective model fitting parameters. In one embodiment, the modeled impairment terms having a model fitting parameter that satisfy a threshold are included in the subset while those that do not are excluded. The composite impairment correlation term may be used for received signal processing, e.g., demodulation or signal-to-interference estimation.

摘要翻译： 选择模型损害相关项的子集用于接收信号处理。 根据一个实施例，选择模型化损害相关项的子集，并且基于建模的损害相关项的子集来确定复合损害相关项。 复合损害相关项可以通过用相应的模型拟合参数缩放包括在子集中的建模损伤相关项来确定。 然后将缩放的建模的损伤相关项组合以形成复合损害相关项。 可以基于它们各自的模型拟合参数来选择建模的损伤相关项的子集。 在一个实施例中，具有满足阈值的模型拟合参数的建模的损伤项包括在子集中，而不被排除。 复合损害相关项可以用于接收信号处理，例如解调或信号对干扰估计。

公开(公告)号：US20080013649A1

公开(公告)日：2008-01-17

申请号：US11457018

申请日：2006-07-12

申请人： Karin Engdahl

发明人： Karin Engdahl

IPC分类号： H04L27/06

CPC分类号： H04L25/0212 ,  H04B1/7115

摘要： A wrap-around event in an automatic frequency control (AFC) in a receiver in a communication system can be detected by performing AFC-like operations on one or more additional channel estimates of the strongest communication path. Once a wrap-around event is detected, a correct frequency reference can be restored by forcing the AFC into a high-speed mode of operation, which gives the AFC a chance to restore the correct frequency reference, or by applying a momentary frequency reference change.

摘要翻译： 通信系统中的接收机中的自动频率控制（AFC）中的环绕事件可以通过对最强通信路径的一个或多个附加信道估计执行类似AFC的操作来检测。 一旦检测到环绕事件，就可以通过强制AFC进入高速运行模式来恢复正确的频率参考，从而使AFC有机会恢复正确的频率参考，或者通过应用瞬时频率参考变化 。

公开(公告)号：US07688920B2

公开(公告)日：2010-03-30

申请号：US11457018

申请日：2006-07-12

申请人： Karin Engdahl

发明人： Karin Engdahl

IPC分类号： H04L27/06 ,  H04B1/69

CPC分类号： H04L25/0212 ,  H04B1/7115

摘要： A wrap-around event in an automatic frequency control (AFC) in a receiver in a communication system can be detected by performing AFC-like operations on one or more additional channel estimates of the strongest communication path. Once a wrap-around event is detected, a correct frequency reference can be restored by forcing the AFC into a high-speed mode of operation, which gives the AFC a chance to restore the correct frequency reference, or by applying a momentary frequency reference change.

摘要翻译： 通信系统中的接收机中的自动频率控制（AFC）中的环绕事件可以通过对最强通信路径的一个或多个附加信道估计执行类似AFC的操作来检测。 一旦检测到环绕事件，就可以通过强制AFC进入高速运行模式来恢复正确的频率参考，从而使AFC有机会恢复正确的频率参考，或者通过应用瞬时频率参考变化 。

公开(公告)号：US20080013650A1

公开(公告)日：2008-01-17

申请号：US11457029

申请日：2006-07-12

申请人： Karin Engdahl

发明人： Karin Engdahl

IPC分类号： H04L27/06

CPC分类号： H04B1/7117 ,  H04B1/7087 ,  H04B2201/709727 ,  H04L2027/0055 ,  H04L2027/0065

摘要： Respective residual frequency offsets of de-spread correlated signals derived from a received communication signal are determined and used to improve receiver performance in high-velocity situations. The knowledge of the residual frequency offsets of the respective fingers can be used for adaptive AFC combining, improved velocity estimation, and adaptive residual frequency offset compensation.

摘要翻译： 确定从接收的通信信号导出的解扩展相关信号的各自的残余频率偏移，并用于在高速情况下提高接收机性能。 各个手指的残余频率偏移的知识可以用于自适应AFC组合，改进的速度估计和自适应残余频率偏移补偿。