公开(公告)号：US08599977B2

公开(公告)日：2013-12-03

申请号：US13124938

申请日：2009-09-11

申请人： Filip Zalio

发明人： Filip Zalio

IPC分类号： H03D1/04

CPC分类号： H04L25/022 ,  H04L5/0007 ,  H04L25/0216 ,  H04L25/0222 ,  H04L25/0228 ,  H04L27/2647

摘要： The invention is suitable for use in an OFDM system, such as the 3GPP-LTE mobile phone system. A method of estimating Doppler spread in a mobile communications device includes: (a) selecting a channel estimate from each of a sequence of time slots at each of a series of selected sub-carrier frequencies; (b) performing a Digital Fourier Transform (DFT) on the selected channel estimates at each selected sub-carrier frequency to thereby compute DFT components at different frequency bins; (c) summing the DFT components at all selected sub-carrier frequencies for each different frequency bin; (d) detecting the frequency bin at which the summed DFT components first falls below a predetermined threshold; and (e) converting the detected frequency bin into a Doppler spread estimate.

摘要翻译： 本发明适用于诸如3GPP-LTE移动电话系统的OFDM系统。 一种在移动通信设备中估计多普勒扩展的方法包括：（a）从一系列选择的子载波频率中的每一个的时隙序列中的每一个中选择信道估计; （b）对每个选择的子载波频率对所选择的信道估计执行数字傅立叶变换（DFT），从而计算不同频率段的DFT分量; （c）对于每个不同频率仓的所有选择的子载波频率对DFT分量求和; （d）检测相加的DFT分量首先低于预定阈值的频率仓; 和（e）将所检测的频率仓转换为多普勒扩展估计。

公开(公告)号：US07599335B2

公开(公告)日：2009-10-06

申请号：US10561192

申请日：2004-06-18

申请人： Filip Zalio ,  Vasic Dobrica

发明人： Filip Zalio ,  Vasic Dobrica

IPC分类号： H04B7/216

CPC分类号： H04B1/70735 ,  H04B1/7083 ,  H04B2201/70702

摘要： A method of cell search in a wireless communication systems having a plurality of base stations and a mobile station, each of the plurality of base stations serving a separate cell within a service area and transmitting a common primary synchronization code (PSC) in a primary synchronization channel within a slot of a radio frame, the method including the steps of: (a) scanning (72) through radio channels in scanning increments corresponding to a standard channel raster; (b) estimating (98) the PSC signal-to-noise ratio of each radio channel; (c) if a PSC signal-to-noise ratio is above a first predetermined threshold level (100), completing a cell search procedure including slot synchronization, frame synchronization and scrambling code detection steps for that radio channel; (d) if the cell search procedure is successfully completed (112) for the radio channel in step (c), increasing the scanning increments to the broadcast frequency separation between cells; (e) when all radio channels are scanned in step (d), sorting (74) the scanned radio channels in descending order by PSC signal-to-noise ratio; and (f) performing (76) the cell search procedure on each sorted radio channel in descending order.

摘要翻译： 一种在具有多个基站和移动站的无线通信系统中的小区搜索的方法，所述多个基站中的每一个基站服务于服务区域内的分离小区，并且在主同步中发送公共主同步码（PSC） 该方法包括以下步骤：（a）以对应于标准信道光栅的扫描增量扫描（72）通过无线电信道; （b）估计（98）每个无线电信道的PSC信噪比; （c）如果PSC信噪比高于第一预定阈值电平（100），则完成包括用于该无线电信道的时隙同步，帧同步和扰码检测步骤的小区搜索过程; （d）如果步骤（c）中无线电信道的小区搜索过程成功完成（112），则将扫描增量增加到小区之间的广播频率间隔; （e）当在步骤（d）中扫描所有无线信道时，以扫描的无线电信道按照PSC信噪比降序排序（74）; 和（f）以降序对每个排序的无线电信道执行（76）小区搜索过程。

公开(公告)号：US07848391B2

公开(公告)日：2010-12-07

申请号：US11815719

申请日：2006-02-08

申请人： Mikhail Shnaider ,  Vasic Dobrica ,  Holly He ,  Filip Zalio

发明人： Mikhail Shnaider ,  Vasic Dobrica ,  Holly He ,  Filip Zalio

IPC分类号： H04B1/00

CPC分类号： H04B1/7103 ,  H04B2201/70701

摘要： A method of cancelling interference induced by a coherent interference source in a spread spectrum receiver comprising the steps of: quantifying (44; 94) first interference values induced by the coherent interference source (SCH) in symbols on a first spread spectrum physical channel (P-CCPCH; CPICH); calculating (46, 48, 50; 96, 98, 100) second interference values induced by the coherent interference source in symbols on a second spread spectrum channel (DPCH) from the first interference values; and applying (18; 74) a correction value, derived from the second interference values, to the symbols on the second spread spectrum channel.

摘要翻译： 一种抵消由扩频接收机中的相干干扰源引起的干扰的方法，包括以下步骤：在第一扩展频谱物理信道（P）上量化（44; 94）由相干干扰源（SCH）引起的符号中的第一干扰值 -CCPCH; CPICH）; 根据所述第一干涉值计算由第二扩频通道（DPCH）上的符号中的相干干扰源引起的第二干扰值（46,48,50,66,98,100）; 以及将（18; 74）从所述第二干扰值导出的校正值应用于所述第二扩频信道上的符号。

公开(公告)号：US06985514B2

公开(公告)日：2006-01-10

申请号：US09984876

申请日：2001-10-31

申请人： Filip Zalio ,  Dobrica Vasic

发明人： Filip Zalio ,  Dobrica Vasic

IPC分类号： H04B1/707

CPC分类号： H03G3/3089

摘要： An automatic gain control circuit (3) for a direct sequence spread spectrum receiver. A discrimination unit (10) generates a discrimination signal error from received in-phase and quadrature base band signals, whilst multiplication unit (16) multiplies the discrimination signal error by a first loop gain constant during signal acquisition and a second different loop gain constant during signal tracking. A recursive integrator (22) then acquires an integrated AGC value from the multiplied discrimination signal error.By using two different values of loop gain, the circuit is able to alternate between a “fast mode” during signal acquisition, and a “slow track” mode during signal tracking.

摘要翻译： 一种用于直接序列扩频接收机的自动增益控制电路（3）。 识别单元（10）从接收到的同相和正交基带信号产生鉴别信号误差，而乘法单元（16）在信号采集期间将鉴别信号误差乘以第一环路增益常数，并且在第二不同的环路增益常数期间 信号跟踪。 递归积分器（22）然后从乘法鉴别信号误差获得积分AGC值。 通过使用两个不同的环路增益值，该电路能够在信号采集期间的“快速模式”和信号跟踪期间的“慢轨道”模式之间交替。

公开(公告)号：US20100046653A1

公开(公告)日：2010-02-25

申请号：US12594706

申请日：2008-04-03

申请人： Filip Zalio

发明人： Filip Zalio

IPC分类号： H04K1/10

CPC分类号： H04L27/2675 ,  H04L5/0007 ,  H04L5/0053 ,  H04L27/2655 ,  H04L27/2685 ,  H04W56/0085

摘要： In a method of identifying a time reference in signal received from a transmitter, a replica of a synchronization sequence is generated on the basis of at least one known transmission parameter and is compared to a sequence derived from the signal received from the transmitter to identify a reference point in the signal received from the transmitter.

摘要翻译： 在识别从发射机接收的信号中的时间参考的方法中，基于至少一个已知传输参数生成同步序列的副本，并将其与从发射机接收的信号导出的序列进行比较，以识别 从发射机接收的信号中的参考点。

公开(公告)号：US20090028222A1

公开(公告)日：2009-01-29

申请号：US11815719

申请日：2006-02-08

申请人： Mikhail Shnaider ,  Vasic Dobrica ,  Holly He ,  Filip Zalio

发明人： Mikhail Shnaider ,  Vasic Dobrica ,  Holly He ,  Filip Zalio

IPC分类号： H04B1/707

CPC分类号： H04B1/7103 ,  H04B2201/70701

摘要： A method of cancelling interference induced by a coherent interference source in a spread spectrum receive comprises the steps of: quantifying (44; 94) first interference values induced by the coherent interference source (SCH) in symbols on a first spread spectrum physical channel (P-CCPCH; CPICH); calculating (46, 48, 50; 96, 98, 100) second interference values induced by the coherent interference source in symbols on a second spread spectrum channel (DPCH) from the first interference values; and applying (18; 74) a correction value, derived from the second interference values, to the symbols on the second spread spectrum channel.

摘要翻译： 消除由扩频接收中的相干干扰源引起的干扰的方法包括以下步骤：在第一扩频物理信道（P）上量化（44; 94）由相干干扰源（SCH）引起的符号中的第一干扰值 -CCPCH; CPICH）; 根据所述第一干涉值计算由第二扩频通道（DPCH）上的符号中的相干干扰源引起的第二干扰值（46,48,50,66,98,100）; 以及将（18; 74）从所述第二干扰值导出的校正值应用于所述第二扩频信道上的符号。

公开(公告)号：US20070010280A1

公开(公告)日：2007-01-11

申请号：US10561192

申请日：2004-06-18

申请人： Filip Zalio ,  Vasic Dobrica

发明人： Filip Zalio ,  Vasic Dobrica

IPC分类号： H04Q7/20 ,  H04B7/00

CPC分类号： H04B1/70735 ,  H04B1/7083 ,  H04B2201/70702

摘要： A method of cell search in a wireless communication systems having a plurality of base stations and a mobile station, each of the plurality of base stations serving a separate cell within a service area and transmitting a common primary synchronisation code (PSC) in a primary synchronisation channel within a slot of a radio frame, the method including the steps of: (a) scanning (72) through radio channels in scanning increments corresponding to a standard channel raster; (b) estimating (98) the PSC signal-to-noise ratio of each radio channel; (c) if a PSC signal-to-noise ratio is above a first predetermined threshold level (100), completing a cell search procedure including slot synchronisation, frame synchronisation and scrambling code detection steps for that radio channel; (d) if the cell search procedure is successfully completed (112) for the radio channel in step (c), increasing the scanning increments to the broadcast frequency separation between cells; (e) when all radio channels are scanned in step (d), sorting (74) the scanned radio channels in descending order by PSC signal-to-noise ratio; and (f) performing (76) the cell search procedure on each sorted radio channel in descending order.

摘要翻译： 一种在具有多个基站和移动站的无线通信系统中的小区搜索的方法，所述多个基站中的每一个基站服务于服务区域内的分离小区，并且在主同步中发送公共主同步码（PSC） 该方法包括以下步骤：（a）以对应于标准信道光栅的扫描增量扫描（72）通过无线电信道; （b）估计（98）每个无线电信道的PSC信噪比; （c）如果PSC信噪比高于第一预定阈值电平（100），则完成包括用于该无线电信道的时隙同步，帧同步和扰码检测步骤的小区搜索过程; （d）如果步骤（c）中无线电信道的小区搜索过程成功完成（112），则将扫描增量增加到小区之间的广播频率间隔; （e）当在步骤（d）中扫描所有无线信道时，以扫描的无线电信道按照PSC信噪比降序排序（74）; 和（f）以降序对每个排序的无线电信道执行（76）小区搜索过程。

公开(公告)号：US08744013B2

公开(公告)日：2014-06-03

申请号：US13516694

申请日：2011-01-07

申请人： Duong Pham ,  Filip Zalio

发明人： Duong Pham ,  Filip Zalio

IPC分类号： H03K9/00

CPC分类号： H04L27/2647 ,  H04J11/0036 ,  H04L25/0204 ,  H04L25/022 ,  H04L25/0222 ,  H04L25/0242

摘要： A device for performing channel estimation in an OFDM system includes a non-volatile memory, a G matrix selector and a channel estimate generator. The non-volatile memory stores a set of G matrices indexed by signal to noise ratio, the G matrices being precalculated for a plurality of signal to noise ratios using a fixed Doppler frequency and a fixed delay spread. The G matrix selector uses a quantised signal to noise ratio to select a G matrix from the set of G matrices stored in the non-volatile memory. The channel estimate generator multiplies the selected G matrix by LS estimates for the reference signal to obtain a channel estimation.

摘要翻译： 用于在OFDM系统中执行信道估计的装置包括非易失性存储器，G矩阵选择器和信道估计发生器。 非易失性存储器存储由信噪比索引的一组G矩阵，使用固定的多普勒频率和固定的延迟扩展，对于多个信噪比对G矩阵进行预先计算。 G矩阵选择器使用量化的信噪比来从存储在非易失性存储器中的G矩阵集合中选择G矩阵。 信道估计发生器将所选择的G矩阵乘以参考信号的LS估计，以获得信道估计。

公开(公告)号：US20080254803A1

公开(公告)日：2008-10-16

申请号：US11579543

申请日：2005-05-23

申请人： Filip Zalio

发明人： Filip Zalio

IPC分类号： H04Q7/20

CPC分类号： H04W48/16 ,  H04B1/7075

摘要： A method of scheduling cell search activity in a mobile communication user terminal (28) during transmission gap sequencing in burst mode, the method comprising the steps of: maintaining (404) a table (62) of regular periodic patterns of discreet cell search commands for execution during the transmission gap sequences, wherein the commands are ordered by the desired execution times; and sequentially executing commands (408-414) in the table at the desired execution time.

摘要翻译： 一种在突发模式的传输间隙排序期间在移动通信用户终端（28）中调度小区搜索活动的方法，所述方法包括以下步骤：维护（404）对于小区搜索命令的规则周期性模式的表（62），以便 在传输间隙序列期间的执行，其中命令由期望的执行时间排序; 并在期望的执行时间顺序地执行表中的命令（408-414）。

公开(公告)号：US20070177535A1

公开(公告)日：2007-08-02

申请号：US10592310

申请日：2005-03-16

申请人： Filip Zalio

发明人： Filip Zalio

IPC分类号： H04Q7/00 ,  H04B1/10

CPC分类号： H04B1/70735 ,  H04B1/7083 ,  H04B2201/70707

摘要： A method of performing a continuous cell search for new cells in a wireless communication systems having a plurality of base stations and a mobile station, the method including the steps of: (a) using (1) a primary synchronization code to acquire slot synchronization for identified cells; (b) using (2) a secondary synchronization code to find frame synchronization and identify a code group of the identified cells; (c) determining (3) a primary scrambling code used by the identified cells; and (d) rejecting (4) cells corresponding to previously identified primary scrambling codes from post-processing, wherein the method further includes the steps of: (e) correlating slot timings identified in step (a) with frame timings corresponding to primary scrambling codes identified in previous runs of steps (b) and (c); and (f) rejecting slot timings identified in step (a) from further processing in steps (b) and (c) when correlation is detected.

摘要翻译： 一种在具有多个基站和移动台的无线通信系统中对新的小区进行连续小区搜索的方法，所述方法包括以下步骤：（a）使用（1）主同步码获取时隙同步， 识别细胞; （b）使用（2）次同步码来查找帧同步并识别所识别的小区的码组; （c）确定（3）由所识别的小区使用的主扰码; （d）从后处理中拒绝对应于先前识别的主扰码的（4）小区，其中所述方法还包括以下步骤：（e）将步骤（a）中识别的时隙定时与对应于主扰码的帧定时相关联 在以前的步骤（b）和（c）中确定; 以及（f）当检测到相关性时，在步骤（a）中识别的时隙定时被拒绝步骤（b）和（c）中的进一步处理。