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1. 发明申请

WO2015063607A2 METHOD AND APPARATUS FOR FRAME SYNCHRONIZATION IN A POSITIONING SYSTEM 审中-公开
标题翻译：定位系统中帧同步的方法和装置
公开(公告)号：WO2015063607A2
公开(公告)日：2015-05-07
申请号：PCT/IB2014/002987
申请日：2014-11-03
申请人： SAMSUNG ELECTRONICS CO., LTD.
发明人： YOUSSEF, Mohamed , MCCULLOUGH, Bruce , GRONEMEYER, Steven
IPC分类号： G01S19/38 , G01C21/26
CPC分类号： H04B1/7073 , G01S19/13 , G01S19/243 , H04B1/70755 , H04B2201/70715
摘要： A method for soft frame synchronization in a navigational receiver is provided. A distance between bits of a sync pattern received by the navigational receiver and a known sync pattern is computed. A probability of detection value for the received sync pattern based on the distance is assigned. A confidence level for the received sync pattern using the probability of detection value is computed. The confidence level is compared with a confidence threshold. If the confidence level is greater than or equal to the confidence threshold, the confidence level of the received sync pattern is updated to generate a credibility of the sync pattern. The credibility of the received sync pattern is compared with a predetermined credibility value and, if the credibility of the received sync pattern is greater than or equal to the predetermined credibility value, synchronization of the navigational receiver is performed using the received sync pattern.
摘要翻译：提供了一种用于导航接收机中的软帧同步的方法。计算由导航接收机接收的同步模式的比特之间的距离和已知的同步模式。分配基于该距离的接收到的同步模式的检测值的概率。计算使用检测概率的接收同步模式的置信度。置信水平与置信度阈值进行比较。如果置信度大于或等于置信度阈值，则更新接收到的同步码型的置信度以产生同步码型的可信度。将接收到的同步模式的可信度与预定可信度值进行比较，并且如果所接收的同步模式的可信度大于或等于预定可信度值，则使用所接收的同步模式来执行导航接收器的同步。 p>

2. 发明申请

WO2008084381B1 APPARATUS, METHOD AND COMPUTER PROGRAM PRODUCT FOR DETECTING NON-SYNCHRONIZED RANDOM ACCESS CHANNEL PREAMBLE 审中-公开
标题翻译：用于检测非同步随机访问通道前缀的装置，方法和计算机程序产品
公开(公告)号：WO2008084381B1
公开(公告)日：2008-10-09
申请号：PCT/IB2008000037
申请日：2008-01-09
申请人： NOKIA CORP , NOKIA INC , HOOLI KARI , KORHONEN JUHA S , PAJUKOSKI KARI , TIIROLA ESA
发明人： HOOLI KARI , KORHONEN JUHA S , PAJUKOSKI KARI , TIIROLA ESA
IPC分类号： H04B1/707
CPC分类号： H04B1/708 , H04B1/70753 , H04B1/70755 , H04L7/042
摘要： A detect decision is made by non-coherently combining results from correlating a preamble (CAZAC) sequence with base/root sequences used in the cell and setting a detection threshold based on those combined results. Another threshold can be set based on coherently combining results from correlating the preamble sequence, in which case the detect decision is based on satisfying either one of the thresholds. Where the sequence repeats in the same preamble, the results that are combined are from correlating the first instance of the CAZAC sequence and from correlating the second instance of the CAZAC sequence. Where the sequence does not repeat, different segments of the CAZAC sequence, each less than the whole and not necessarily of the same length, are correlated for a partial correlation on each segment, then the segments are combined and used to set the detection threshold. Detection may be done in stages, adjusting the threshold after the first stage based on comparing the results of non-coherent and coherent combining.
摘要翻译：通过非相干地组合来自将前导码（CAZAC）序列与在小区中使用的基本/根序列相关联的结果并基于那些组合的结果设置检测阈值来进行检测决定。可以基于相关地组合来自相关前同步码序列的结果来设置另一阈值，在这种情况下，检测决定基于满足阈值中的任何一个。在同一前导码中重复序列的情况下，组合的结果来自将CAZAC序列的第一个实例与CAZAC序列的第二个实例相关联。在序列不重复的情况下，CAZAC序列的不同部分（每个小于整体而不一定相同的长度）与每个片段上的部分相关相关，然后将片段组合并用于设置检测阈值。可以分阶段地进行检测，基于比较非相干和相干组合的结果来调整第一阶段之后的阈值。

3. 发明申请

WO2008044204A2 SELECTION SCHEME FOR SELECTING A PEAK IN A CORRELATI0N SIGNAL 审中-公开
标题翻译：选择相关信号中的峰值的选择方案
公开(公告)号：WO2008044204A2
公开(公告)日：2008-04-17
申请号：PCT/IB2007/054106
申请日：2007-10-09
申请人： NXP B.V. , ALLIOT, Eric , TOMATIS, Fabrizio
发明人： ALLIOT, Eric , TOMATIS, Fabrizio
IPC分类号： H04B1/707
CPC分类号： H04B1/70755 , H04B1/70754 , H04B1/7113 , H04B1/7117
摘要： The present invention relates to a method and an associated module (8) for the selection of a maximum peak in a correlation signal corresponding to the correlation between a code and an input signal received by a receiver (MS) on a radio channel wherein a transmitter transmits periodically the said code. The selection criteria is the time recurrence of the same position of peaks of correlation, taking into account a margin around the peak position compensating for a drift due to a frequency offset between the receiver and the transmitter.
摘要翻译：本发明涉及一种用于选择相应信号中的最大峰值的方法和相关模块（8），所述相关信号对应于由无线电信道上的接收机（MS）接收的码和输入信号之间的相关性，其中发射机周期性地发送所述代码。考虑到由于接收机和发射机之间的频率偏移引起的漂移补偿峰值位置附近的余量，选择标准是相关位置的相同位置的时间复现。

4. 发明申请

WO2006036405A8 METHOD OF DETERMINING AN ACQUISITION INDICATOR BIT IN A COMMUNICATION SYSTEM 审中-公开
标题翻译：在通信系统中确定采集指示符位的方法
公开(公告)号：WO2006036405A8
公开(公告)日：2007-03-01
申请号：PCT/US2005030195
申请日：2005-08-25
申请人： SANDBRIDGE TECHNOLOGIES INC
发明人： CHUN JOON-HWA
IPC分类号： H04L12/56 , H04B1/707 , H04B7/26
CPC分类号： H04B1/70755 , H04B1/7075
摘要： A method of determining an acquisition indicator bit AI s , at a receiver in a communication system which includes receiving multiplexed acquisition indicator bits y = B x AI + n, where B is the signature matrix known at both base station and UE, AI is all the acquisition indicator bits and n represents noise. Next, an estimated value of the acquisition indicator bit AÎ MMSE (s) as a function of formula (I) is calculated, where B T (s,.) is the s-th row vector of the transposed matrix B T for acquisition indicator bit AI s ,. Finally, the acquisition indicator bit AI S is set as follows: AI s. =-1, if AÎ MMSE (s) S =0, if R = AÎ, MMSE SE (s) s =1, if AÎ MMSE (s) = U, where R and U are decision thresholds.
摘要翻译：一种在通信系统中的接收机处确定采集指示符位AI的方法，该通信系统包括接收多路采集指示符位y = B×AI + n，其中B是在两个基址处已知的签名矩阵站和UE，AI是所有采集指标位，n表示噪声。接下来，计算作为公式（I）的函数的获取指示符位AΔMMMSE（s）的估计值，其中B（S，））是用于采集指示符位AI S1的转置矩阵B ~~T的第s行向量。最后，采集指示符位AI 被设置如下：AI = -1，如果A <> MMSE 如果R = A，则MMSE = 0，如果AΔMMSE （s）= U，其中R和U是决策阈值。~~

5. 发明申请

WO2006036405A2 METHOD OF DETERMINING AN ACQUISITION INDICATOR BIT IN A COMMUNICATION SYSTEM 审中-公开
标题翻译：在通信系统中确定采集指示符位的方法
公开(公告)号：WO2006036405A2
公开(公告)日：2006-04-06
申请号：PCT/US2005/030195
申请日：2005-08-25
申请人： SANDBRIDGE TECHNOLOGIES, INC.
发明人： SANDBRIDGE TECHNOLOGIES, INC. , CHUN, Joon-Hwa
IPC分类号： H04L12/56
CPC分类号： H04B1/70755 , H04B1/7075
摘要： A method of determining an acquisition indicator bit AI s , at a receiver in a communication system which includes receiving multiplexed acquisition indicator bits y = B x AI + n, where B is the signature matrix known at both base station and UE, AI is all the acquisition indicator bits and n represents noise. Next, an estimated value of the acquisition indicator bit AÎ MMSE (s) as a function of formula (I) is calculated, where B T (s,.) is the s -th row vector of the transposed matrix B T for acquisition indicator bit AI s ,. Finally, the acquisition indicator bit AI S is set as follows: AI s. =-1, if AÎ MMSE (s) S =0, if R ≤ AÎ, MMSE SE (s) s =1, if AÎ MMSE (s) ≥ U, where R and U are decision thresholds.
摘要翻译：一种确定采集指示符位AI

6. 发明申请

WO2004012462A2 SYNCHRONIZATION STRATEGY AND ARCHITECTURE FOR SPREAD-SPECTRUM RECEIVERS 审中-公开
标题翻译：扩频接收机的同步策略和结构
公开(公告)号：WO2004012462A2
公开(公告)日：2004-02-05
申请号：PCT/US0322885
申请日：2003-07-22
申请人： THOMSON LICENSING SA , MARGETTS ADAM ROBERT , LITWIN LOUIS ROBERT
发明人： MARGETTS ADAM ROBERT , LITWIN LOUIS ROBERT
IPC分类号： H04Q
CPC分类号： H04B1/7093 , H04B1/70735 , H04B1/7075 , H04B1/70755 , H04B1/70775
摘要： An apparatus and method for synchronizing the reception of a spread-spectrum signal include a synchronization apparatus (400) having a code-matched filter (410), a running average unit (413) in signal communication with the code-matched filter, a peak detector (422) in signal communication with the running average unit, and a synchronizer (424) in signal communication with the peak detector for providing an index of a peak.
摘要翻译：用于同步扩频信号的接收的装置和方法包括具有码匹配滤波器（410）的同步装置（400），与码匹配滤波器进行信号通信的移动平均单元（413），峰值与移动平均单元进行信号通信的检测器（422），以及与峰值检测器进行信号通信的同步器（424），用于提供峰值的索引。

7. 发明申请

WO2003077064A2 METHOD OF ACCOMMODATING OVERLAPPING OR ADJACENT NETWORKS 审中-公开
标题翻译：存储重叠或相似网络的方法
公开(公告)号：WO2003077064A2
公开(公告)日：2003-09-18
申请号：PCT/US2003/006616
申请日：2003-03-06
申请人： XTREMESPECTRUM, INC. , ROBERTS, Richard, D.
发明人： ROBERTS, Richard, D.
IPC分类号： G06F
CPC分类号： H04L1/0019 , H04B1/70755 , H04L1/0007 , H04L1/0039 , H04L1/16 , H04L1/20
摘要： A multiple step process is performed at a local wireless network to limit interference between the local wireless network and a remote wireless network. Initially, a set of code words is chosen for the local wireless network to encode data with that have good cross correlation properties. If these initial code words are not adequate to prevent interference, then the local wireless network will adjust its transmission parameters by either shifting the transmission phase of its signals or by changing the code words it uses. If altering the transmission parameters does not alleviate the interference problem, then the local wireless network attempts to locate the interfering remote network and merge with it. If the merger is not possible or is unsuccessful, then the interference limiting process fails.
摘要翻译：在本地无线网络上执行多步骤过程以限制本地无线网络与远程无线网络之间的干扰。最初，为本地无线网络选择一组代码字以对具有良好互相关性质的数据进行编码。如果这些初始码字不足以防止干扰，则本地无线网络将通过移动其信号的传输阶段或通过改变其使用的码字来调整其传输参数。如果改变传输参数不能减轻干扰问题，那么本地无线网络会尝试定位干扰远程网络并与之合并。如果合并不可能或不成功，则干扰限制过程失败。

8. 发明申请

WO2003036897A1 METHOD AND ARRANGEMENT FOR LIMITING SIGNAL IN RADIO TRANSMITTER 审中-公开
标题翻译：用于限制无线电发射机信号的方法和装置
公开(公告)号：WO2003036897A1
公开(公告)日：2003-05-01
申请号：PCT/FI2002/000826
申请日：2002-10-23
申请人： NOKIA CORPORATION , VUOPALA, Tapio , PIIRAINEN, Olli
发明人： VUOPALA, Tapio , PIIRAINEN, Olli
IPC分类号： H04L27/26
CPC分类号： H04B1/70755 , H04B2201/70706 , H04L27/2624 , H04L27/366
摘要： A method for limiting a signal in a radio transmitter comprises giving (302) a signal a limiting threshold, taking (304) at least two samples from the signal for obtaining sample values, adding (306) one or more sample values between the obtained first and at least one subsequent sample values, searching (308) for sample values exceeding the limiting threshold, and if at least one sample value exceeding the limiting threshold is found determining (310) limiting coefficients or reducing coefficients for a predetermined number of sample values by means of the at least one sample value exceeding the limiting threshold, and limiting (312) the signal by one or more determined coefficients.
摘要翻译：一种用于限制无线电发射机中的信号的方法包括给（302）信号限制阈值，从（304）取得来自所述信号的至少两个样本获得样本值，将（306）所获得的第一以及至少一个随后的采样值，搜索（308）超过限制阈值的采样值，并且如果找到超过限制阈值的至少一个采样值，则确定（310）通过以下方式限定系数或减小预定数量的采样值的系数：所述至少一个采样值的装置超过所述限制阈值，并且通过一个或多个确定的系数限制（312）所述信号。

9. 发明申请

WO0216960A8 APPARATUS FOR REDUCING AUTO-CORRELATION OR CROSS-CORRELATION IN WEAK CDMA SIGNALS 审中-公开
标题翻译：减少CDMA信号中的自相关或交叉相关的装置
公开(公告)号：WO0216960A8
公开(公告)日：2002-07-11
申请号：PCT/US0123078
申请日：2001-07-20
申请人： SIRF TECH INC
发明人： TURETZKY GREGORY BRET , NORMAN CHARLES P , FALK HENRY D
IPC分类号： G01S19/09 , G01S1/00 , G01S5/00 , G01S19/21 , G01S19/25 , G01S19/26 , G01S19/30 , G01S19/37 , H04B1/707 , H04B1/7075 , H04B1/708 , H04B1/7085 , H04B1/709 , H04B1/7097 , H04Q7/38 , G01S1/04 , G01S5/14
CPC分类号： G01S19/37 , G01S5/0027 , G01S5/0036 , G01S19/09 , G01S19/21 , G01S19/25 , G01S19/26 , G01S19/30 , H04B1/7075 , H04B1/70755 , H04B1/708 , H04B1/7085 , H04B1/709 , H04B1/7097 , H04B2201/70715
摘要： The present invention discloses methods, apparatuses, and systems for eliminating auto- and cross-correlation in weak signal CDMA systems, such as GPS systems. The invention uses parallel data paths that allow standard correlation of signals in parallel with verification of the lock signal to determine whether the system has locked onto the proper signal within the scanned signal window. The invention can be made with multiple CPUs, a single CPU with dual input modes, on multiple IC chips, or as a single IC chip solution for small, low cost reception, downconversion, correlation, and verification systems.
摘要翻译：本发明公开了用于消除诸如GPS系统的弱信号CDMA系统中的自相关和互相关的方法，装置和系统。本发明使用并行数据路径，其允许信号与锁定信号的验证并行地进行标准相关，以确定系统是否锁定在扫描信号窗口内的适当信号上。本发明可以由多个CPU，具有双重输入模式的单个CPU，多个IC芯片构成，或者作为用于小型，低成本接收，下变频，相关和验证系统的单个IC芯片解决方案。

10. 发明申请

WO02035745A1 PN CODE ACQUISITION WITH ADAPTIVE ANTENNA ARRAY 审中-公开
标题翻译： PN代码采集自适应天线阵列
公开(公告)号：WO02035745A1
公开(公告)日：2002-05-02
申请号：PCT/US2001/027782
申请日：2001-10-24
IPC分类号： H01Q3/26 , H04B1/7075 , H04B7/08 , H04B15/00 , H04K1/00 , H04L27/30
CPC分类号： H04B1/70755 , H01Q3/2605 , H04B7/0848 , H04B7/086
摘要： A pseudonise code (PN) acquisition scheme employs all elements of a smart antenna array (102) and an adaptive threshold. The basic structure is the combination of a PN correlation searcher (105), an adaptive beamformer (107) and an adaptive threshold setting circuit (108). During each observation interval, the adaptive beamformer adaptively updates the weight vector for the smart antenna elements using the accumulated received signal despread with a trial PN code phase error. A spatially correlated signal is then formed by weighting an accumulated value of the signal received by each antenna in the array over the observation period with the corresponding final weight of smart antenna weight vector as calculated by the adaptive beamformer, and finally compared to the adaptive threshold to determine whether PN code acquisition has occurred.
摘要翻译：伪代码（PN）采集方案采用智能天线阵列（102）的所有元件和自适应阈值。基本结构是PN相关搜索器（105），自适应波束形成器（107）和自适应阈值设置电路（108）的组合。在每个观察间隔期间，自适应波束形成器使用利用试用PN码相位误差去扩展的累加的接收信号来自适应地更新智能天线元件的加权矢量。然后通过在观察期间对由阵列中的每个天线接收的信号的累加值加权由自适应波束形成器计算的智能天线权重向量的相应最终权重，然后与自适应阈值进行比较，形成空间相关信号以确定是否发生了PN码采集。

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