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1. 发明授权

US08873504B2 Flexible low complexity reference signal filtering for LTE receivers 有权
标题翻译：用于LTE接收机的灵活低复杂度参考信号滤波
公开(公告)号：US08873504B2
公开(公告)日：2014-10-28
申请号：US13597819
申请日：2012-08-29
申请人： Bryan W. Zancho , Thomas P. Krauss , Bryan S. Nollett , David L. Steckl
发明人： Bryan W. Zancho , Thomas P. Krauss , Bryan S. Nollett , David L. Steckl
IPC分类号： H04L5/22
CPC分类号： H04L25/0212 , H04L25/022 , H04L25/0224
摘要： A method and system generates channel response estimates by performing time direction filtering of first channel estimates obtained from frequency direction filtering. A baseband integrated circuit (BBIC) receives information signals comprising reference signals, control signals provided by physical control channels, and data signals provided by physical data channels. Using a latency requirement of a physical channel, symbol selection logic selects valid reference signal symbol positions corresponding to first channel estimates from among frequency filtered received reference signals. A coefficient set selection logic selects a set of filter coefficients from among multiple sets of pre-optimized coefficients, utilizing at least one of (a) the latency requirement, (b) a channel condition, and (c) the selected reference signal symbol positions. A time direction filter uses the selected filter coefficients to filter the first channel estimates in order to generate a channel response estimate for a resource element of the physical channel.
摘要翻译：方法和系统通过对从频率方向滤波获得的第一信道估计进行时间方向滤波来产生信道响应估计。基带集成电路（BBIC）接收包括参考信号，由物理控制信道提供的控制信号和由物理数据信道提供的数据信号的信息信号。使用物理信道的等待时间要求，符号选择逻辑从经频率滤波的接收参考信号中选择对应于第一信道估计的有效参考信号符号位置。系数组选择逻辑利用（a）等待时间要求，（b）信道条件和（c）所选择的参考信号符号位置中的至少一个，从多组预优化系数中选择一组滤波器系数。时间方向滤波器使用所选择的滤波器系数来对第一信道估计进行滤波，以便为物理信道的资源元素生成信道响应估计。

2. 发明申请

US20140064238A1 FLEXIBLE LOW COMPLEXITY REFERENCE SIGNAL FILTERING FOR LTE RECEIVERS 有权
标题翻译：用于LTE接收机的灵活低复杂度参考信号滤波
公开(公告)号：US20140064238A1
公开(公告)日：2014-03-06
申请号：US13597819
申请日：2012-08-29
申请人： Bryan W. Zancho , Thomas P. Krauss , Bryan S. Nollett , David L. Steckl
发明人： Bryan W. Zancho , Thomas P. Krauss , Bryan S. Nollett , David L. Steckl
IPC分类号： H04W72/08
CPC分类号： H04L25/0212 , H04L25/022 , H04L25/0224
摘要： A method and system generates channel response estimates by performing time direction filtering of first channel estimates obtained from frequency direction filtering. A baseband integrated circuit (BBIC) receives information signals comprising reference signals, control signals provided by physical control channels, and data signals provided by physical data channels. Using a latency requirement of a physical channel, symbol selection logic selects valid reference signal symbol positions corresponding to first channel estimates from among frequency filtered received reference signals. A coefficient set selection logic selects a set of filter coefficients from among multiple sets of pre-optimized coefficients, utilizing at least one of (a) the latency requirement, (b) a channel condition, and (c) the selected reference signal symbol positions. A time direction filter uses the selected filter coefficients to filter the first channel estimates in order to generate a channel response estimate for a resource element of the physical channel.
摘要翻译：方法和系统通过对从频率方向滤波获得的第一信道估计进行时间方向滤波来产生信道响应估计。基带集成电路（BBIC）接收包括参考信号，由物理控制信道提供的控制信号和由物理数据信道提供的数据信号的信息信号。使用物理信道的等待时间要求，符号选择逻辑从经频率滤波的接收参考信号中选择对应于第一信道估计的有效参考信号符号位置。系数组选择逻辑利用（a）等待时间要求，（b）信道条件和（c）所选择的参考信号符号位置中的至少一个，从多组预优化系数中选择一组滤波器系数。时间方向滤波器使用所选择的滤波器系数来对第一信道估计进行滤波，以便为物理信道的资源元素生成信道响应估计。

3. 发明授权

US07428262B2 Channel estimation in a rake receiver of a CDMA communication system 失效
标题翻译： CDMA通信系统的耙式接收机中的信道估计
公开(公告)号：US07428262B2
公开(公告)日：2008-09-23
申请号：US10640487
申请日：2003-08-13
申请人： Bryan W. Zancho , Christopher P. Larosa , Alexandre Mallette , John P. Oliver
发明人： Bryan W. Zancho , Christopher P. Larosa , Alexandre Mallette , John P. Oliver
IPC分类号： H04B1/707
CPC分类号： H04L25/0228 , H04B1/7115 , H04B1/7117 , H04L1/20
摘要： A method and apparatus for channel estimation in a rake receiver of a CDMA communication system operates with a finite-impulse-response channel estimation filter with L taps and having a fixed delay. A pilot sequence of a received sequence of data from a channel of the communication system on the rake receiver is input. A quality of the channel of the communication system is determined using noise or Doppler measurements. These measurements are used in adjusting a bandwidth of the filter to accommodate the channel quality while keeping the fixed delay, which minimizes the delay buffer size. The filter is then used to operate on the received sequence of data to provide coherent modulation.
摘要翻译：用于CDMA通信系统的耙式接收机中的信道估计的方法和装置利用具有L个抽头并具有固定延迟的有限脉冲响应信道估计滤波器来操作。输入来自rake接收机上的通信系统的信道的接收的数据序列的导频序列。使用噪声或多普勒测量来确定通信系统的信道的质量。这些测量用于调整滤波器的带宽以适应信道质量，同时保持固定的延迟，这使延迟缓冲器大小最小化。然后使用滤波器对所接收的数据序列进行操作以提供相干调制。

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