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：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：US5799047A

公开(公告)日：1998-08-25

申请号：US713187

申请日：1996-09-12

申请人： Vasic Dobrica

发明人： Vasic Dobrica

IPC分类号： H04L27/38 ,  H04L27/00 ,  H04L27/22 ,  H04L27/233 ,  H04B1/10

CPC分类号： H04L27/2332 ,  H04L2027/003 ,  H04L2027/0053 ,  H04L2027/0093

摘要： The carrier synchronization unit combines the recursive least square (RLS) type phase and amplitude estimation and the prediction in a decision-directed carrier synchronization strategy. The fading channel multiplicative distortion is estimated using an adaptive recursive least square method which minimizes a time-weighted square error. Combining prediction based on a least-square fading memory curve fit and extrapolation with RLS estimation the tracking delay effect is reduced. Resulting in an improvement of receiver performance. The proposed method minimizes the phenomenon of hang-up allowing rapid phase acquisition with high probability of success.

摘要翻译： 载波同步单元将决策导向载波同步策略中的递归最小二乘（RLS）类型相位和幅度估计与预测相结合。 使用最小化时间加权平方误差的自适应递归最小二乘法来估计衰落信道乘法失真。 基于最小二乘衰落记忆曲线拟合和外推与RLS估计的组合预测，跟踪延迟效应降低。 导致接收机性能的提高。 所提出的方法最大限度地减少了挂起的现象，允许快速相位采集，成功的概率很高。

公开(公告)号：US6070086A

公开(公告)日：2000-05-30

申请号：US933535

申请日：1997-09-19

申请人： Vasic Dobrica

发明人： Vasic Dobrica

IPC分类号： H04B1/707 ,  H04B7/005 ,  H04B7/08 ,  H04B7/26 ,  H04J13/00 ,  H04W16/28 ,  H04W52/04 ,  H04W52/08

CPC分类号： H04W52/24 ,  H04B7/0857 ,  H04W52/42 ,  H04W52/08 ,  H04W52/20 ,  Y02B60/50

摘要： A first EbIo estimator calculates EbIo using samples corresponding to data symbols and samples corresponding to pilot symbols. A diversity combined signal, which is obtained by coherent maximal ratio combining of paths signals is provided for the data symbol hard decisions. The data symbol hard decisions are used in EbIo measurement. The calculation for signal power uses re-modulation. The re-modulation is based on provided carrier signals. The carrier signal is derived using interpolated pilot symbols. The calculation for interference power uses a difference between a received signal and a re-modulated signal. A second EbIo estimator calculates EbIo using only samples corresponding to the pilot symbols. A rough error rate estimation uses the hard decisions for pilot samples and their comparison with known pilot symbols. If an estimated error rate is less than a predetermined threshold, the EbIo measured by first EbIo estimator is used for power control. When the estimated error rate is larger than the threshold, the EbIo measured by second EbIo estimator is used to control the power. The selection between the first and second EbIo estimator is for each slot EbIo measurement. The measured EbIo is compared with the preset EbIo threshold level, and as a result of this comparison, a command to lower or raise power is sent to the mobile station using the return channel.

摘要翻译： 第一个EbIo估计器使用对应于对应于导频符号的数据符号和样本的采样来计算EbIo。 为数据符号硬判决提供了通过路径信号的相干最大比组合获得的分集组合信号。 数据符号硬判决用于EbIo测量。 信号功率的计算使用重新调制。 重新调制是基于提供的载波信号。 使用内插导频符号导出载波信号。 干扰功率的计算使用接收信号和再调制信号之间的差。 第二个EbIo估计器仅使用与导频符号对应的样本来计算EbIo。 粗略错误率估计使用导频样本的硬判决及其与已知导频符号的比较。 如果估计误差率小于预定阈值，则由第一EbIo估计器测量的EbIo用于功率控制。 当估计误码率大于阈值时，使用由第二EbIo估计器测量的EbIo来控制功率。 第一和第二EbIo估计器之间的选择是针对每个时隙EbIo测量。 将测量的EbIo与预设的EbIo阈值电平进行比较，作为该比较的结果，使用返回通道向移动台发送降低或提高功率的命令。

公开(公告)号：US5875215A

公开(公告)日：1999-02-23

申请号：US701072

申请日：1996-08-21

申请人： Vasic Dobrica

发明人： Vasic Dobrica

IPC分类号： H03H21/00 ,  H04B3/10 ,  H04L25/03 ,  H04L27/00 ,  H04L27/01 ,  H04L27/22 ,  H04L27/233 ,  H04L27/38 ,  H04L27/06

CPC分类号： H04L27/3872 ,  H04L25/03038 ,  H04L27/2332 ,  H04L27/3809 ,  H04L2027/0028 ,  H04L2027/0046 ,  H04L2027/0093

摘要： A carrier synchronizing unit for a coherent detection data communication system over non-frequency selective fading channels wherein the redundancy in estimation of a fading channel multiplicative distortion is reduced to improve the reliability of the estimation and compensate for an influence of a tracking delay in recursive least square estimation. The carrier synchronizing unit combines pilot symbols interpolation and recursive least square type phase and amplitude estimation. Carrier synchronizing unit comprises pilot symbol interpolation type phase and amplitude means for interpolating pilot symbols to estimate fading channel multiplicative distortion for the purpose of pre-detection, recursive least square type phase and amplitude estimation means to estimate fading channel multiplicative distortion in the second estimation stage, distortion compensation means to compensate fading distortion, symbol decision means for deciding a received data symbols using coherent detection, delay means for delaying a received signal, and means for periodically training of the recursive least square type phase and amplitude means. The fading channel multiplicative distortion is estimated in the second stage using a recursive least square method which minimizes a time-weighted square error.

摘要翻译： 一种用于在非频率选择性衰落信道上的相干检测数据通信系统的载波同步单元，其中减少衰落信道乘法失真的估计中的冗余以提高估计的可靠性，并补偿递归最小的跟踪延迟的影响 平方估计。 载波同步单元组合导频符号插值和递归最小二乘法相位和幅度估计。 载波同步单元包括导频符号插值类型相位和幅度装置，用于内插导频符号以估计用于预检测的衰落信道乘法失真，递归最小二乘型相位和幅度估计装置，用于估计第二估计级中的衰落信道乘法失真 用于补偿衰落失真的失真补偿装置，用于使用相干检测来确定接收到的数据符号的符号判定装置，用于延迟接收信号的延迟装置，以及周期性地对递归最小二乘型相位和幅度装置进行训练的装置。 使用最小化时间加权平方误差的递归最小二乘法在第二阶段中估计衰落信道乘法失真。