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31. 发明申请

US20110243104A1 METHOD AND SYSTEM FOR TRACKING TIMING DRIFT IN MULTIPLE FREQUENCY HYPOTHESIS TESTING 有权
标题翻译：用于跟踪多次频率测量中的时序干扰的方法和系统
公开(公告)号：US20110243104A1
公开(公告)日：2011-10-06
申请号：US12768379
申请日：2010-04-27
申请人： Francis Swarts , Mark Kent
发明人： Francis Swarts , Mark Kent
IPC分类号： H04W56/00
CPC分类号： H04L27/2656 , H04J11/0073 , H04L27/2657 , H04L27/2675
摘要： A mobile device receives a signal comprising a PSS and performs multiple frequency hypothesis testing (MFHT) on the received signal. The mobile device starts MFHT by applying different initial frequency offsets in corresponding MFH branches. Timing drift in MFHT is compensated based on corresponding initial frequency offsets. In this regard, a PSS correlation process is performed on the received signal in each MFH branch. Resulting PSS correlation data is buffered and processed in corresponding PSS timing hypothesis buffers. The timing position of samples is updated in the PSS timing hypothesis buffers based on corresponding initial frequency offsets. Energy associated with the PSS transmissions may be accumulated utilizing corresponding PSS correlation data at updated sampling positions. The received PSS is detected based on a maximum accumulated energy associated with the PSS transmissions. Information that comes from the detected PSS is utilized by the mobile device to camp on a corresponding cell.
摘要翻译：移动设备接收包括PSS的信号，并对接收到的信号执行多频假设检验（MFHT）。移动设备通过在相应的MFH分支中应用不同的初始频率偏移来启动MFHT。 MFHT中的定时漂移基于相应的初始频率偏移进行补偿。在这方面，对每个MFH分支中的接收信号执行PSS相关处理。所得到的PSS相关数据在相应的PSS时序假设缓冲器中进行缓冲和处理。基于对应的初始频率偏移，在PSS定时假设缓冲器中更新样本的定时位置。可以利用在更新的采样位置处的对应PSS相关数据累积与PSS传输相关联的能量。基于与PSS传输相关联的最大累积能量来检测所接收的PSS。来自检测到的PSS的信息被移动设备用于驻留在相应的小区上。

32. 发明申请

US20110026413A1 METHOD AND SYSTEM FOR MULTIPLE FREQUENCY HYPOTHESIS TESTING WITH FULL SYNCH ACQUISITION IN AN E-UTRA/LTE UE RECEIVER 有权
标题翻译：用于在E-UTRA / LTE UE接收机中进行全同步采集的多个频率测量的方法和系统
公开(公告)号：US20110026413A1
公开(公告)日：2011-02-03
申请号：US12510956
申请日：2009-07-28
申请人： Francis Swarts , Mark Kent
发明人： Francis Swarts , Mark Kent
IPC分类号： H04L12/26
CPC分类号： H04B17/20 , H04J3/0614 , H04J11/0073 , H04J11/0076
摘要： A mobile device receives a radio frequency (RF) signal comprising a primary synchronization sequence (PSS) and a secondary synchronization sequence (SSS). The mobile device performs multiple frequency hypothesis (MFH) testing via multiple MFH branches. A SSS decoding and a PSS correlation process are performed, respectively, per MFH branch. The SSS decoding may be performed according to corresponding PSS detection. Cell-specific information such as cell ID information and/or Cyclic Prefix (CP) length is acquired per MFH branch based on corresponding PSS detection and SSS decoding. Subsequently, the mobile device selects a particular MFH branch with a maximum PSS correlation peak over the entire MFH branches. The cell-specific information from the selected MFH branch is utilized for communications within a corresponding cell if the information is detected consistently. The mobile device compares cell ID information and/or CP length information over the remaining MFH branches for consistency check.
摘要翻译：移动设备接收包括主同步序列（PSS）和辅同步序列（SSS）的射频（RF）信号。移动设备通过多个MFH分支执行多频率假设（MFH）测试。分别对每个MFH分支执行SSS解码和PSS相关处理。可以根据相应的PSS检测来执行SSS解码。基于对应的PSS检测和SSS解码，每个MFH分支获取诸如小区ID信息和/或循环前缀（CP）长度的小区特定信息。随后，移动设备在整个MFH分支上选择具有最大PSS相关峰值的特定MFH分支。如果一致地检测到信息，则来自所选MFH分支的小区特定信息被用于相应小区内的通信。移动设备在剩余的MFH分支上比较小区ID信息和/或CP长度信息以进行一致性检查。

33. 发明申请

US20110007704A1 METHOD AND SYSTEM FOR USING SIGN BASED SYNCHRONIZATION SEQUENCES IN A CORRELATION PROCESS TO REDUCE CORRELATION COMPLEXITY IN AN OFDM SYSTEM 有权
标题翻译：在OFDM系统中减少相关复杂度的相关过程中使用基于符号的同步序列的方法和系统
公开(公告)号：US20110007704A1
公开(公告)日：2011-01-13
申请号：US12500564
申请日：2009-07-09
申请人： Francis Swarts , Mark Kent
发明人： Francis Swarts , Mark Kent
IPC分类号： H04W72/04 , H04J3/06
CPC分类号： H04J11/0073 , H04B1/7077 , H04L27/2655 , H04L27/2662 , H04L27/2671 , H04L27/2675 , H04L27/2684 , H04W56/0085
摘要： A mobile device receives a signal, from a base station, comprising a primary synchronization signal (PSS) and a secondary synchronization signal (SSS). The received PSS and SSS are used to acquire cell-specific parameters so as to ensure communicates between the mobile device and the base station. The mobile device correlates the received signal in time domain using signs of each of a plurality of correlation reference sequences (reference PSSs). The mobile device generates sign based correlation reference PSSs using signs of the corresponding reference PSSs, which are generated based on a variety of Zadoff-Chu sequences. The received PSS is detected based on the correlation. No multiplication operations are used in the correlation process. Symbol timing is identified according to the detected PSS. The mobile device uses the identified symbol timing to baseband process the received signal. The received signal is an OFDM signal received over a 3GPP LTE/E-UTRA air interface.
摘要翻译：移动设备从基站接收包括主同步信号（PSS）和辅同步信号（SSS）的信号。接收的PSS和SSS用于获取小区特定参数，以确保移动设备与基站之间的通信。移动设备使用多个相关参考序列（参考PSS）中的每一个的符号在时域中对接收的信号进行相关。移动设备使用基于各种Zadoff-Chu序列生成的相应参考PSS的符号来生成基于符号的相关参考PSS。基于相关性检测接收到的PSS。在相关过程中不使用乘法运算。根据检测到的PSS识别符号定时。移动设备使用所识别的符号定时来对接收到的信号进行基带处理。所接收的信号是通过3GPP LTE / E-UTRA空中接口接收的OFDM信号。

34. 发明授权

US07865202B2 Method and system for I/Q branch equalization in OFDM systems 有权
标题翻译： OFDM系统中I / Q分支均衡的方法和系统
公开(公告)号：US07865202B2
公开(公告)日：2011-01-04
申请号：US12251774
申请日：2008-10-15
申请人： Francis Swarts , Mark Kent , Theodoros Georgantas
发明人： Francis Swarts , Mark Kent , Theodoros Georgantas
IPC分类号： H04B15/00
CPC分类号： H04L27/3863 , H04L25/03159 , H04L27/2601 , H04L27/3872
摘要： Aspects of a method and system for I/Q branch equalization in OFDM systems may include determining a transfer function mismatch between an in-phase processing branch, and/or a quadrature processing branch in an OFDM receiver. The determined transfer function mismatch may be compensated for, by applying equalization after a fast Fourier transform (FFT) in an in-phase processing branch and/or a quadrature processing branch. The OFDM system may be compliant with, for example, UMTS LTE (EUTRA), WiMAX (IEEE 802.16), DVB-H, and WLAN (IEEE 802.11). A transfer function may be measured for an in-phase branch filter and/or quadrature branch filter to determine the transfer function mismatch. The transfer function mismatch may be compensated for, in frequency domain by the equalizer. The transfer function mismatch may comprise magnitude and/or phase response mismatch, wherein the magnitude and/or phase response mismatch may be a function of frequency.
摘要翻译： OFDM系统中用于I / Q分支均衡的方法和系统的方面可以包括确定OFDM接收机中的同相处理分支和/或正交处理分支之间的传递函数失配。可以通过在同相处理分支和/或正交处理分支中的快速傅立叶变换（FFT）之后应用均衡来补偿确定的传递函数失配。 OFDM系统可以符合例如UMTS LTE（EUTRA），WiMAX（IEEE 802.16），DVB-H和WLAN（IEEE 802.11）。可以对同相分支滤波器和/或正交分支滤波器测量传递函数，以确定传递函数失配。可以通过均衡器在频域中补偿传递函数失配。传递函数失配可以包括幅度和/或相位响应不匹配，其中幅度和/或相位响应失配可以是频率的函数。

35. 发明申请

US20090232051A1 METHOD AND SYSTEM FOR THE EXTENSION OF FREQUENCY OFFSET ESTIMATION RANGE BASED ON CORRELATION OF COMPLEX SEQUENCES 有权
标题翻译：基于复杂序列相关的频率偏移估计范围扩展的方法和系统
公开(公告)号：US20090232051A1
公开(公告)日：2009-09-17
申请号：US12251752
申请日：2008-10-15
申请人： Francis Swarts , Mark Kent
发明人： Francis Swarts , Mark Kent
IPC分类号： H04W8/00
CPC分类号： H04L27/0014 , H04L2027/0067
摘要： Aspects of a method and system for the extension of frequency offset estimation range based on correlation of complex sequences may include partitioning each of a received sample sequence and a local replica sample sequence into three or more similar length contiguous sample sub-sequences. For each of the three or more similar length contiguous sample sub-sequences, a correlation coefficient may be determined between corresponding sample sub-sequences of the partitioned received sample sequence and the local replica sample sequence. A plurality of phase differences may be determined based on adjacent ones of the determined correlation coefficients, and the determined plurality of phase differences may be averaged to generate a phase increment estimate. The communication system may be compliant with a wireless standard, comprising UMTS EUTRA (LTE), WiMAX (IEEE 802.16), and/or WLAN (IEEE 802.11).
摘要翻译：基于复杂序列的相关性的用于扩展频率偏移估计范围的方法和系统的方面可以包括将接收到的采样序列和局部复制样本序列中的每一个分成三个或更多个相似长度的连续样本子序列。对于三个或更多个相似长度的连续样本子序列中的每一个，可以在分割的接收样本序列的对应样本子序列和局部复本样本序列之间确定相关系数。可以基于确定的相关系数中的相邻的相关系数来确定多个相位差，并且可以对确定的多个相位差进行平均以产生相位增量估计。通信系统可以符合包括UMTS EUTRA（LTE），WiMAX（IEEE 802.16）和/或WLAN（IEEE 802.11）的无线标准。

36. 发明申请

US20090225877A1 METHOD AND SYSTEM FOR CHARACTERIZATION OF FILTER TRANSFER FUNCTIONS IN OFDM SYSTEMS 审中-公开
标题翻译： OFDM系统滤波器传输函数特征的方法和系统
公开(公告)号：US20090225877A1
公开(公告)日：2009-09-10
申请号：US12251815
申请日：2008-10-15
申请人： Francis Swarts , Mark Kent , Theodoros Georgantas
发明人： Francis Swarts , Mark Kent , Theodoros Georgantas
IPC分类号： H04L27/28
CPC分类号： H04L27/2647 , H04L27/3863 , H04L2027/0016
摘要： Aspects of a method and system for characterization of filter transfer functions in OFDM systems may include receiving at a filter, a calibration signal which is generated from conversion of a digital input signal comprising N samples to an analog signal. The digital input signal may comprise one (1) full scale sample and N-1 zero samples and N is an integer. In response to receiving the calibration signal, the filter may generate an output analog signal, wherein the output analog signal may be converted to an output digital signal, and a transfer function of the filter may be determined via a Fast Fourier transformation of the output digital signal. The OFDM system may be compliant with a wireless standard, wherein the wireless standard may comprise UMTS EUTRA (LTE), WiMAX(IEEE 802.16), and/or WLAN (IEEE 802.11).
摘要翻译：用于表征OFDM系统中的滤波器传递函数的方法和系统的方面可以包括在滤波器处接收由从包含N个采样的数字输入信号转换为模拟信号而产生的校准信号。数字输入信号可以包括一（1）满量程样本和N-1个零样本，N是整数。响应于接收到校准信号，滤波器可以产生输出模拟信号，其中输出模拟信号可以被转换为输出数字信号，并且滤波器的传递函数可以通过输出数字信号的快速傅立叶变换来确定信号。 OFDM系统可以符合无线标准，其中无线标准可以包括UMTS EUTRA（LTE），WiMAX（IEEE 802.16）和/或WLAN（IEEE 802.11）。

37. 发明申请

US20080063046A1 Method and System for Estimating Signal Error in a Communication System 审中-公开
标题翻译：用于估计通信系统中信号误差的方法和系统
公开(公告)号：US20080063046A1
公开(公告)日：2008-03-13
申请号：US11531105
申请日：2006-09-12
申请人： Johannes Hendrik Conroy , Francis Swarts , Mark Kent , Uri Landau
发明人： Johannes Hendrik Conroy , Francis Swarts , Mark Kent , Uri Landau
IPC分类号： H03K9/04
CPC分类号： H04L27/0014 , H04B1/7075 , H04L2027/0016 , H04L2027/003 , H04L2027/0055 , H04L2027/0063
摘要： Estimating error signals in a communication system may include determining a frequency error of a received RF signal utilizing a plurality of correlators, where one or more of the correlators may be fed with a carrier frequency of the received RF signal and a remaining portion of the plurality of correlators may be fed with one or more other carrier frequency. This carrier frequency fed to the remaining portion of the plurality of correlators may differ from the carrier frequency of the received RF signal. The received RF signal may comprise a primary synchronization channel (PSC) code for wideband code division multiple access (WCDMA). The carrier frequency of the received RF signal may be rotated in an I and Q coordinate system so as to generate the other carrier frequency.
摘要翻译：估计通信系统中的误差信号可以包括利用多个相关器来确定所接收的RF信号的频率误差，其中一个或多个相关器可以馈送所接收的RF信号的载波频率，并且多个相关器的剩余部分的相关器可以馈送一个或多个其它载波频率。馈送到多个相关器的剩余部分的载波频率可能与接收的RF信号的载波频率不同。所接收的RF信号可以包括用于宽带码分多址（WCDMA）的主同步信道（PSC）码。接收的RF信号的载波频率可以在I和Q坐标系中旋转，以产生另一个载波频率。

38. 发明授权

US09225440B2 Method and system for multiple frequency hypothesis testing with full synch acquisition in an E-UTRA/LTE UE receiver 有权
标题翻译：用于在E-UTRA / LTE UE接收机中进行全同步采集的多频率假设检验的方法和系统
公开(公告)号：US09225440B2
公开(公告)日：2015-12-29
申请号：US13620035
申请日：2012-09-14
申请人： Francis Swarts , Mark Kent
发明人： Francis Swarts , Mark Kent
IPC分类号： H04J3/16 , H04B17/00 , H04J11/00 , H04J3/06 , H04B17/20
CPC分类号： H04B17/20 , H04J3/0614 , H04J11/0073 , H04J11/0076
摘要： A mobile device receives a radio frequency (RF) signal comprising a primary synchronization sequence (PSS) and a secondary synchronization sequence (SSS). The mobile device performs multiple frequency hypothesis (MFH) testing via multiple MFH branches. A SSS decoding and a PSS correlation process are performed, respectively, per MFH branch. The SSS decoding may be performed according to corresponding PSS detection. Cell-specific information such as cell ID information and/or Cyclic Prefix (CP) length is acquired per MFH branch based on corresponding PSS detection and SSS decoding. Subsequently, the mobile device selects a particular MFH branch with a maximum PSS correlation peak over the entire MFH branches. The cell-specific information from the selected MFH branch is utilized for communications within a corresponding cell if the information is detected consistently. The mobile device compares cell ID information and/or CP length information over the remaining MFH branches for consistency check.
摘要翻译：移动设备接收包括主同步序列（PSS）和辅同步序列（SSS）的射频（RF）信号。移动设备通过多个MFH分支执行多频率假设（MFH）测试。分别对每个MFH分支执行SSS解码和PSS相关处理。可以根据相应的PSS检测来执行SSS解码。基于对应的PSS检测和SSS解码，每个MFH分支获取诸如小区ID信息和/或循环前缀（CP）长度的小区特定信息。随后，移动设备在整个MFH分支上选择具有最大PSS相关峰值的特定MFH分支。如果一致地检测到信息，则来自所选MFH分支的小区特定信息被用于相应小区内的通信。移动设备在剩余的MFH分支上比较小区ID信息和/或CP长度信息以进行一致性检查。

39. 发明授权

US08576830B2 Method and system for tracking timing drift in multiple frequency hypothesis testing 有权
标题翻译：用于跟踪多频率假设检验中的定时漂移的方法和系统
公开(公告)号：US08576830B2
公开(公告)日：2013-11-05
申请号：US12768379
申请日：2010-04-27
申请人： Francis Swarts , Mark Kent
发明人： Francis Swarts , Mark Kent
IPC分类号： H04J3/06
CPC分类号： H04L27/2656 , H04J11/0073 , H04L27/2657 , H04L27/2675
摘要： A mobile device receives a signal comprising a PSS and performs multiple frequency hypothesis testing (MFHT) on the received signal. The mobile device starts MFHT by applying different initial frequency offsets in corresponding MFH branches. Timing drift in MFHT is compensated based on corresponding initial frequency offsets. In this regard, a PSS correlation process is performed on the received signal in each MFH branch. Resulting PSS correlation data is buffered and processed in corresponding PSS timing hypothesis buffers. The timing position of samples is updated in the PSS timing hypothesis buffers based on corresponding initial frequency offsets. Energy associated with the PSS transmissions may be accumulated utilizing corresponding PSS correlation data at updated sampling positions. The received PSS is detected based on a maximum accumulated energy associated with the PSS transmissions. Information that comes from the detected PSS is utilized by the mobile device to camp on a corresponding cell.
摘要翻译：移动设备接收包括PSS的信号，并对接收到的信号执行多频假设检验（MFHT）。移动设备通过在相应的MFH分支中应用不同的初始频率偏移来启动MFHT。 MFHT中的定时漂移基于相应的初始频率偏移进行补偿。在这方面，对每个MFH分支中的接收信号执行PSS相关处理。所得到的PSS相关数据在相应的PSS时序假设缓冲器中进行缓冲和处理。基于对应的初始频率偏移，在PSS定时假设缓冲器中更新样本的定时位置。可以利用在更新的采样位置处的对应PSS相关数据累积与PSS传输相关联的能量。基于与PSS传输相关联的最大累积能量来检测所接收的PSS。来自检测到的PSS的信息被移动设备用于驻留在相应的小区上。

40. 发明授权

US08369279B2 Method and system for iterative multiple frequency hypothesis testing with cell-ID detection in an E-UTRA/LTE UE receiver 有权
标题翻译：用于在E-UTRA / LTE UE接收机中进行小区ID检测的迭代多频率假设检验的方法和系统
公开(公告)号：US08369279B2
公开(公告)日：2013-02-05
申请号：US12732052
申请日：2010-03-25
申请人： Francis Swarts , Mark Kent
发明人： Francis Swarts , Mark Kent
IPC分类号： H04W4/00 , H04J3/06
CPC分类号： H04W72/0453 , H04J11/0069 , H04L27/2657 , H04L27/2675 , H04L27/2686 , H04L2027/0034 , H04L2027/0087
摘要： A mobile device receives a signal comprising a PSS and a SSS. The mobile device performs iterative MFHT utilizing a reduced number of MFH branches. At each iteration, frequency offset estimation and Cell-ID detection are concurrently performed. An iteration starts with selecting initial frequency offsets spanning a frequency offset estimation range. The selected initial frequency offsets are placed in the MFH branches. A particular MFH branch with a maximum PSS correlation peak magnitude is selected at the iteration. A frequency offset estimate in the selected MFH branch is utilized for frequency control. The frequency offset estimation range utilized for the current iteration is reduced for the next iteration. A Cell-ID is declared if the Cell-ID is consistently detected not only within a particular iteration on the basis of having detected consistent cell ID information for the first and second halves of a radio frame, but also from iteration to iteration.
摘要翻译：移动设备接收包括PSS和SSS的信号。移动设备利用减少数量的MFH分支执行迭代MFHT。在每次迭代时，同时执行频偏估计和小区ID检测。迭代开始于选择跨越频率偏移估计范围的初始频率偏移。所选择的初始频率偏移位于MFH分支中。在迭代中选择具有最大PSS相关峰值幅度的特定MFH分支。所选MFH分支中的频率偏移估计用于频率控制。用于当前迭代的频率偏移估计范围在下一次迭代中减少。如果基于已经检测到无线电帧的第一和第二半部分的一致的小区ID信息，而且从迭代到迭代，则不仅在特定迭代中一致地检测小区ID，否则将声明小区ID。

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