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公开(公告)号：US20130237217A1
公开(公告)日：2013-09-12
申请号：US13697991
申请日：2010-08-11
申请人： Oliver Klein , Dietmar Lipka
发明人： Oliver Klein , Dietmar Lipka
IPC分类号： H04W48/16
CPC分类号： H04W48/16 , H04J11/0073 , H04J11/0076 , H04J11/0086 , H04L27/2656 , H04L27/2662 , H04L27/2675
摘要： A technique for cell signature determination in a cellular communication network is described. A method implementation of this technique comprises the steps of providing a set of cell signature hypotheses (d(n)), each cell signature hypothesis including a first partial hypothesis (d(2n)) and a second partial hypothesis (d(2n+1)), receiving a signal (X(n)) carrying a cell signature, the signal (X(n)) including a first partial signal (X(2n)) and a second partial signal (X(2n+1)), correlating the first partial signal (X(2n)) with each first partial hypothesis (d(2n)) to determine a first correlation result for each cell signature hypothesis, correlating the second partial signal (X(2n+1)) with each second partial hypothesis (d(2n+1)) to determine a second correlation result for each cell signature hypothesis, and determining the cell signature based on the correlation results including discarding a given cell signature hypothesis based on an analysis of a first magnitude of the first correlation result associated with the given cell signature hypothesis and a second magnitude of the second correlation result associated with the given cell signature hypothesis.
摘要翻译： 描述了蜂窝通信网络中用于小区签名确定的技术。 该技术的方法实现包括以下步骤：提供一组细胞特征假设（d（n）），每个细胞特征假设包括第一部分假设（d（2n））和第二部分假设（d（2n + 1） ），接收携带小区签名的信号（X（n）），包含第一部分信号（X（2n））和第二部分信号（X（2n + 1））的信号（X（n） 将第一部分信号（X（2n））与每个第一部分假设（d（2n））相关联以确定每个小区签名假设的第一相关结果，将第二部分信号（X（2n + 1））与每个第二部分信号 部分假设（d（2n + 1）），以确定每个小区签名假设的第二相关结果，以及基于相关结果确定所述小区签名，所述相关结果包括基于对所述第一 与给定细胞特征假说相关的相关结果和第二大小的相关结果 e与给定的细胞特征假说相关的第二相关结果。
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公开(公告)号：US20130143556A1
公开(公告)日：2013-06-06
申请号：US13699179
申请日：2011-05-13
IPC分类号： H04W48/16
CPC分类号： H04W48/16 , H04J11/0073 , H04J11/0076 , H04J11/0086 , H04L27/2656 , H04L27/2662 , H04L27/2675
摘要： A technique for cell signature determination in a cellular communication network is provided. A method implementation of this technique comprises the steps of providing a set of hypothesis signals, each hypothesis signal including a signature hypothesis, receiving a composite signal including a first signal portion carrying a first signature from a first cell and a second signal portion carrying a second signature from a second cell, wherein the first signal portion and the second signal portion overlap at least partially in time, and obtaining a correlation result by correlating the composite signal with each hypothesis signal. After the first signature has been determined, a set of phantom signatures associated with the first signature is provided. The phantom signatures represent artifacts from the first signal portion in the correlation result. Finally, the second signature is determined based on the correlation result taking into account the set of phantom signatures associated with the first signature.
摘要翻译： 提供了一种在蜂窝通信网络中进行小区签名确定的技术。 该技术的方法实现包括以下步骤：提供一组假设信号，每个假设信号包括签名假设，接收包括携带来自第一小区的第一签名的第一信号部分和携带第二信号的第二信号部分的复合信号 签名，其中所述第一信号部分和所述第二信号部分至少部分地在时间上重叠，并且通过将所述复合信号与每个假设信号相关来获得相关结果。 在确定了第一签名之后，提供了与第一签名相关联的一组幻影签名。 幻影签名代表相关结果中来自第一信号部分的伪影。 最后，基于与第一个签名相关联的一组幻影签名的相关结果来确定第二个签名。
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公开(公告)号：US08259875B2
公开(公告)日：2012-09-04
申请号：US12837652
申请日：2010-07-16
IPC分类号： H04L27/06
CPC分类号： H04L27/2659 , H04L27/2675
摘要： A technique for determining a frequency offset between components of a communication network based on a Constant Amplitude Zero Auto-Correlation (CAZAC) sequence is described. A method implementation of this technique comprises a provision of a set of correlation signals at different frequencies, with each correlation signal being indicative of a specific frequency offset hypothesis and comprising the CAZAC sequence. Once a synchronization signal comprising the CAZAC sequence is received, this synchronization signal is correlated with each of the correlation signals to obtain a correlation result for each frequency offset hypothesis. In a next step, at least one of the frequency offset hypotheses is selected based on a comparison of the correlation results. The frequency offset may then be determined based on the at least one selected frequency offset hypothesis.
摘要翻译： 描述了基于恒幅零自相关（CAZAC）序列来确定通信网络的组件之间的频率偏移的技术。 该技术的方法实现包括提供不同频率的一组相关信号，每个相关信号表示特定的频率偏移假设并且包括CAZAC序列。 一旦接收到包括CAZAC序列的同步信号，则该同步信号与每个相关信号相关，以获得每个频率偏移假设的相关结果。 在下一步骤中，基于相关结果的比较来选择频偏假设中的至少一个。 然后可以基于至少一个选择的频率偏移假设来确定频率偏移。
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公开(公告)号：US08781467B2
公开(公告)日：2014-07-15
申请号：US13699179
申请日：2011-05-13
CPC分类号： H04W48/16 , H04J11/0073 , H04J11/0076 , H04J11/0086 , H04L27/2656 , H04L27/2662 , H04L27/2675
摘要： A technique for cell signature determination in a cellular communication network is provided. A method implementation of this technique comprises the steps of providing a set of hypothesis signals, each hypothesis signal including a signature hypothesis, receiving a composite signal including a first signal portion carrying a first signature from a first cell and a second signal portion carrying a second signature from a second cell, wherein the first signal portion and the second signal portion overlap at least partially in time, and obtaining a correlation result by correlating the composite signal with each hypothesis signal. After the first signature has been determined, a set of phantom signatures associated with the first signature is provided. The phantom signatures represent artifacts from the first signal portion in the correlation result. Finally, the second signature is determined based on the correlation result taking into account the set of phantom signatures associated with the first signature.
摘要翻译： 提供了一种在蜂窝通信网络中进行小区签名确定的技术。 该技术的方法实现包括以下步骤：提供一组假设信号，每个假设信号包括签名假设，接收包括携带来自第一小区的第一签名的第一信号部分和携带第二信号的第二信号部分的复合信号 签名，其中所述第一信号部分和所述第二信号部分至少部分地在时间上重叠，并且通过将所述复合信号与每个假设信号相关来获得相关结果。 在确定了第一签名之后，提供了与第一签名相关联的一组幻影签名。 幻影签名代表相关结果中来自第一信号部分的伪影。 最后，基于与第一个签名相关联的一组幻影签名的相关结果来确定第二个签名。
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公开(公告)号：US08693460B2
公开(公告)日：2014-04-08
申请号：US13061908
申请日：2008-09-05
IPC分类号： H04J3/06
CPC分类号： H04B7/2684 , H04W56/0045
摘要： The invention relates to a technique for controlling a synchronization of a terminal device (10) with a wireless network, e.g. an LTE network, wherein data are transmitted as a continuous data signal on a radio interface (11, 12) while being processed block-wise in the terminal (10). A method embodiment of the technique for achieving at least a downlink (11) synchronization comprises establishing a time-address mapping (TAM, 36) indicative of an association of a reference time value of an internal clock (32) with a reference address in the reception data buffer (16); determining an address of data samples representing the received data block in the reception data buffer (16) based on the time-address mapping; and initiating a block-wise reading of the data block from the reception data buffer (16) based on the determined address.
摘要翻译： 本发明涉及一种用于控制终端设备（10）与无线网络的同步的技术，例如， LTE网络，其中数据在无线接口（11,12）上作为连续数据信号发送，同时在终端（10）中以块方式进行处理。 用于实现至少下行链路（11）同步的技术的方法实施例包括建立指示内部时钟（32）的参考时间值与参考地址的关联的时间地址映射（TAM，36） 接收数据缓冲器（16）; 基于时间地址映射确定在接收数据缓冲器（16）中表示接收数据块的数据样本的地址; 以及基于所确定的地址，从所述接收数据缓冲器（16）发起对所述数据块的块状读取。
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公开(公告)号：US20110064069A1
公开(公告)日：2011-03-17
申请号：US12882645
申请日：2010-09-15
申请人： Dietmar Lipka
发明人： Dietmar Lipka
CPC分类号： H04L27/2613 , H04J13/0003 , H04J13/0062 , H04J13/22 , H04L5/0007 , H04L27/2636
摘要： A technique for generating a Single-Carrier Frequency Division Multiple Access, or SC-FDMA, signal having a transmission bandwidth and comprising a Constant Amplitude Zero-Autocorrelation, or CAZAC, sequence of length NCAZAC is described. It will be assumed that the SC-FDMA signal has a time domain formulation with a term representative of an Inverse Discrete Fourier Transform, or IDFT, of length M, with M>NCAZAC. A method embodiment of this technique comprises providing a frequency-domain representation of the CAZAC sequence; mapping the frequency-domain representation of the CAZAC sequence to NCAZAC of MSEQ frequency points, with NCAZAC
摘要翻译： 描述了一种用于生成具有传输带宽并且包括长度NCAZAC的恒定幅度零自相关或CAZAC序列的单载波频分多址或SC-FDMA信号的技术。 将假设SC-FDMA信号具有时域公式，其中具有代表长度为M的离散傅立叶逆变换或IDFT的项，其中M> NCAZAC。 该技术的方法实施例包括提供CAZAC序列的频域表示; 使用NCAZAC
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公开(公告)号：US20050101244A1
公开(公告)日：2005-05-12
申请号：US10451251
申请日：2001-10-11
申请人： Dietmar Lipka , Bojidar Hadjiski
发明人： Dietmar Lipka , Bojidar Hadjiski
CPC分类号： H04B7/0671
摘要： A device (200) for controlling a relative delay between analog R.F. output signals of a plurality of digital radio transmitters (102, 104) in a digital radio transmitter system (100) is described. The device (200) comprises at least one interface (206a, 206b) for receiving delay information, a processing unit (206) for determining the relative delay between the output signals based on the received delay information and an adjusting system for adjusting in the digital domain the absolute delay of at least one of the radio transmitters (102, 104) in accordance with the determined relative delay. The invention further relates to a method for controlling a relative delay between analog R.F. output signals of a plurality of digital radio transmitters (102, 104).
摘要翻译： 一种用于控制模拟R.F.之间的相对延迟的装置（200） 描述数字无线电发射机系统（100）中的多个数字无线电发射机（102,104）的输出信号。 所述设备（200）包括用于接收延迟信息的至少一个接口（206a，206b），用于基于接收到的延迟信息确定输出信号之间的相对延迟的调整单元（206） 所述数字域是根据所确定的相对延迟的至少一个所述无线电发射机（102,104）的绝对延迟。 本发明还涉及一种用于控制模拟R.F.之间的相对延迟的方法。 多个数字无线电发射机（102,104）的输出信号。
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公开(公告)号：US06459743B1
公开(公告)日：2002-10-01
申请号：US09131205
申请日：1998-08-07
申请人： Dietmar Lipka
发明人： Dietmar Lipka
IPC分类号： H03D322
CPC分类号： H03D3/007 , H03M3/40 , H03M3/43 , H04L27/2332
摘要： A radio frequency signal is received by using a sigma-delta analog-to-digital converter to sample the radio frequency signal at a sampling rate and to generate therefrom 1-bit digital samples representing a digital intermediate frequency signal. The intermediate frequency signal is demodulated to generate in-phase and quadrature samples. Demodulation may be performed by generating a first mixed signal by combining the 1-bit digital samples representing the intermediate frequency signal with a first sequence representing a cosine mixing signal; generating a second mixed signal by combining the 1-bit digital samples representing the intermediate frequency signal with a second sequence representing a sine mixing signal; and decimating the first and second mixed signals to generate the in-phase and quadrature samples. In alternative embodiments, the intermediate frequency signal is directly converted to in-phase and quadrature signals by using bandpass decimation filtering to subsample two time-shifted sequences of the intermediate frequency. In another alternative, the sigma-delta analog-to-digital converter uses subsampling to convert the radio frequency signal to a first intermediate frequency, and a decimation filter is used to further convert the signal to a second intermediate frequency. An IQ demodulator then reconstructs the in-phase and quadrature signals from the second intermediate frequency signal.
摘要翻译： 通过使用Σ-Δ模数转换器以采样率对射频信号进行采样并从其生成表示数字中频信号的1位数字采样来接收射频信号。 解调中频信号以产生同相和正交采样。 可以通过将表示中频信号的1比特数字样本与表示余弦混合信号的第一序列组合来产生第一混合信号来进行解调; 通过将表示中频信号的1比特数字样本与表示正弦混合信号的第二序列组合来产生第二混合信号; 并抽取第一和第二混合信号以产生同相和正交采样。 在替代实施例中，通过使用带通抽取滤波将中频信号直接转换成同相和正交信号，以二采样中频的两个时移序列。 在另一替代方案中，Σ-Δ模数转换器使用二次采样将射频信号转换为第一中频，并且使用抽取滤波器来进一步将信号转换为第二中频。 然后，IQ解调器从第二中频信号重建同相和正交信号。
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公开(公告)号：US08880065B2
公开(公告)日：2014-11-04
申请号：US13697991
申请日：2010-08-11
申请人： Oliver Klein , Dietmar Lipka
发明人： Oliver Klein , Dietmar Lipka
CPC分类号： H04W48/16 , H04J11/0073 , H04J11/0076 , H04J11/0086 , H04L27/2656 , H04L27/2662 , H04L27/2675
摘要： A technique for cell signature determination in a cellular communication network is described. A method implementation of this technique comprises the steps of providing a set of cell signature hypotheses (d(n)), each cell signature hypothesis including a first partial hypothesis (d(2n)) and a second partial hypothesis (d(2n+1)), receiving a signal (X(n)) carrying a cell signature, the signal (X(n)) including a first partial signal (X(2n)) and a second partial signal (X(2n+1)), correlating the first partial signal (X(2n)) with each first partial hypothesis (d(2n)) to determine a first correlation result for each cell signature hypothesis, correlating the second partial signal (X(2n+1)) with each second partial hypothesis (d(2n+1)) to determine a second correlation result for each cell signature hypothesis, and determining the cell signature based on the correlation results including discarding a given cell signature hypothesis based on an analysis of a first magnitude of the first correlation result associated with the given cell signature hypothesis and a second magnitude of the second correlation result associated with the given cell signature hypothesis.
摘要翻译： 描述了蜂窝通信网络中用于小区签名确定的技术。 该技术的方法实现包括以下步骤：提供一组细胞特征假设（d（n）），每个细胞特征假设包括第一部分假设（d（2n））和第二部分假设（d（2n + 1） ），接收携带小区签名的信号（X（n）），包含第一部分信号（X（2n））和第二部分信号（X（2n + 1））的信号（X（n） 将第一部分信号（X（2n））与每个第一部分假设（d（2n））相关联以确定每个小区签名假设的第一相关结果，将第二部分信号（X（2n + 1））与每个第二部分信号 部分假设（d（2n + 1）），以确定每个小区签名假设的第二相关结果，以及基于相关结果确定所述小区签名，所述相关结果包括基于对所述第一 与给定细胞特征假说相关的相关结果和第二大小的相关结果 e与给定的细胞特征假说相关的第二相关结果。
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公开(公告)号：US20130230012A1
公开(公告)日：2013-09-05
申请号：US13884718
申请日：2010-11-12
申请人： Dietmar Lipka
发明人： Dietmar Lipka
IPC分类号： H04W48/16
CPC分类号： H04W48/16
摘要： The invention refers to supporting a cell search within a cellular communications network by evaluating a radio signal received from the network, the radio signal covering a certain frequency range composed of a plurality of frequency bands, wherein each band is associated to a certain carrier frequency, the method comprising generating (204) a set of digital signals associated to different carrier frequencies by demodulating the radio signal, evaluating (206) each of the set of digital signals in order to detect a presence of a recurring signal component with a known property, and selecting a corresponding cell, and synchronizing (210) to the carrier frequency associated to the selected cell.
摘要翻译： 本发明涉及通过评估从网络接收的无线电信号来支持在蜂窝通信网络内的小区搜索，该无线电信号覆盖由多个频带组成的特定频率范围，其中每个频带与某一载波频率相关联， 该方法包括通过解调无线电信号来产生（204）与不同载波频率相关联的一组数字信号，评估（206）该组数字信号中的每一个以便检测具有已知属性的重复信号分量的存在， 以及选择对应的小区，并且与（210）同步（210）与所选择的小区相关联的载波频率。
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