公开(公告)号：US07283582B1

公开(公告)日：2007-10-16

申请号：US09689680

申请日：2000-10-13

申请人： Ville Eerola ,  Tapani Ritoniemi

发明人： Ville Eerola ,  Tapani Ritoniemi

IPC分类号： H04B1/00

CPC分类号： H04B1/7085 ,  H04B1/7095

摘要： The present invention relates to a device for generating at least one code phase (Ce, Cp, Ci) the device comprising a shift register (702) comprising N outputs and to which a code sequence (Cin) to be phased is applied, and at least one logic branch (722, 723, 724) controlled by at least one combination control signal on the basis of which the logic branch combines the code phase from i outputs of the shift register (702). N is an integer greater than 2 and i is an integer between 2 and N. Said at least one logic branch preferably comprises i two-input selectors (901 to 909, 911 to 919, 921 to 929), to the first input of each of which is connected one input of the shift register (702) and to the second input is connected one combination control signal (ec0 to ec8, pc0 to pc8, lc0 to lc8), and an i-input combiner (910, 920, 930), to whose outputs are connected the outputs of said i selectors and from whose output said code phase is obtained.

摘要翻译： 本发明涉及一种用于产生至少一个码相（Ce，Cp，Ci）的装置，该装置包括包括N个输出的移位寄存器（702），并且应用要分阶段的码序列（Cin） 由至少一个组合控制信号控制的至少一个逻辑分支（722,723,724），基于该组合控制信号逻辑分支组合来自移位寄存器（702）的i个输出的代码相位。 N是大于2的整数，i是2和N之间的整数。所述至少一个逻辑分支优选地包括i个双输入选择器（901至909,911至919,921至929），每个 连接到移位寄存器（702）的一个输入端和第二输入端，将一个组合控制信号（ec 0〜ec 8，pc 0〜pc 8，lc 0〜lc 8）和i输入组合器 （910,920,930），其输出端连接所述i选择器的输出，并从其输出获得所述代码相位。

公开(公告)号：US20070230546A1

公开(公告)日：2007-10-04

申请号：US11393435

申请日：2006-03-30

申请人： Shimon Moshavi ,  Daniel Yellin

发明人： Shimon Moshavi ,  Daniel Yellin

IPC分类号： H04B1/00

CPC分类号： H04B1/7095 ,  H04B1/7093

摘要： A signal processing apparatus to equalize a signal in a multipath channel, where the equalization is based upon forming a correlation vector and the inverse of a covariance matrix, where the covariance matrix is smaller in dimension than the correlation vector. In one embodiment, the signal processing apparatus forms an extended matrix from the inverse of the covariance matrix, equal in dimension to the correlation vector, by selecting one or more rows of the inverse covariance matrix and shifting the selected one or more rows to form the extended matrix. The extended matrix is multiplied by the correlation vector to provide filter weights to the equalizer. In some embodiments, filtering is performed by a sliding window correlator based upon the selected one or more rows of the covariance matrix, followed by filtering based upon the correlation vector.

摘要翻译： 一种信号处理装置，用于对多路径信道中的信号进行均衡，其中均衡基于形成相关向量和协方差矩阵的逆，其中协方差矩阵的尺寸小于相关向量。 在一个实施例中，信号处理装置通过选择反协方差矩阵的一行或多行并且移动所选择的一行或多行以形成尺寸相等于相关向量的协方差矩阵的逆的扩展矩阵，以形成 扩展矩阵。 将扩展矩阵乘以相关向量，以向均衡器提供滤波器权重。 在一些实施例中，基于所选择的一个或多个协方差矩阵的行，由滑动窗口相关器执行滤波，随后基于相关矢量进行滤波。

公开(公告)号：US20070217486A1

公开(公告)日：2007-09-20

申请号：US11797583

申请日：2007-04-04

申请人： Sharad Sambhwani ,  Ghobad Heidari

发明人： Sharad Sambhwani ,  Ghobad Heidari

IPC分类号： H04B1/00

CPC分类号： H04B1/70735 ,  H04B1/70752 ,  H04B1/708 ,  H04B1/7083 ,  H04B1/7095

摘要： A system for detecting and identifying the identity of a base station or cell which transmits a scrambling code is provided. According to one aspect of the system, the system is used to perform scrambling code detection of eight (8) primary cells (each scrambling code's X-component being spaced sixteen (16) chips apart) in a group. According to another aspect of the system, a single scrambling code generator is used to generate a master scrambling code. The master scrambling code is then used to create individual scrambling codes which are used in correlation with received signals to detect in parallel which one of the eight (8) possible primary cells in the group transmitted the received signals. According to yet another aspect of the system, each of the correlators maintains a corresponding X-component segment of the master scrambling code. For every sixteen (16) chips, a new X-component segment of the master scrambling code is introduced into one of the correlators, a X-component segment of the master scrambling code is dropped from another correlator, and X-component segments of the master scrambling code are sequentially shifted or propagated through the remaining correlators; and concurrent correlations are performed by the correlators using their respective corresponding X-component segments of the master scrambling code and newly received signals.

摘要翻译： 提供了一种用于检测和识别发送扰码的基站或小区的身份的系统。 根据该系统的一个方面，该系统用于对组（8个）主小区进行扰码检测（每个扰码的X分量间隔十六（16）个码片）。 根据系统的另一方面，使用单个扰码发生器来产生主扰码。 然后，主扰码用于产生与接收信号相关使用的各个扰码，并行检测组中八（8）个可能的主小区中的哪一个发送接收信号。 根据系统的另一方面，每个相关器维护主扰码的相应X分量段。 对于每十六（16）个芯片，主扰码的新X分量段被引入到一个相关器中，主扰码的X分量段从另一个相关器中丢弃，并且X分量段 主扰码依次移位或传播通过剩余的相关器; 并且相关器使用它们各自对应的主扰频码和新接收信号的X分量段来执行并发相关。

公开(公告)号：US20070124356A1

公开(公告)日：2007-05-31

申请号：US11505409

申请日：2006-08-17

申请人： Artem Moutchkaev ,  Woo-shik Kang ,  Si-gyoung Koo ,  Ji-hun Koo

发明人： Artem Moutchkaev ,  Woo-shik Kang ,  Si-gyoung Koo ,  Ji-hun Koo

IPC分类号： G06F17/15

CPC分类号： H04B1/7095 ,  H04B1/707 ,  H04B1/7093

摘要： Disclosed is a correlation method to adaptively operate in a time varying phase and a correlator thereof. A correlation method according to the present invention includes performing the first correlation according to a certain reference value and a certain reference interval for correlation of a received signal; calculating an average variation of the received signal through the result of performing the first correlation; deciding a new reference value for the second correlation through the average variation; performing the second correlation according to the new reference value and the reference interval; and selecting the maximum value among the result of performing the second correlation. Accordingly, plural references are decided considering variation of a response signal between tags and also separate plural references are decided considering bit variation of a response signal in the same tag, so that a digital signal can be ideally demodulated in the environment where signal phase variation occurs.

摘要翻译： 公开了一种在时变相位中自适应地操作的相关方法及其相关器。 根据本发明的相关方法包括根据特定的参考值和一定的参考间隔对接收的信号进行相关性执行第一相关; 通过执行所述第一相关的结果计算所述接收信号的平均变化; 通过平均变化确定第二相关的新参考值; 根据新的参考值和参考间隔执行第二相关; 以及选择执行第二相关的结果中的最大值。 因此，考虑到标签之间的响应信号的变化来决定多个参考，并且考虑在相同标签中的响应信号的位变化来决定分离的多个参考，使得数字信号可以在信号相位变化的环境中理想地被解调 。

公开(公告)号：US20070064777A1

公开(公告)日：2007-03-22

申请号：US11557373

申请日：2006-11-07

申请人： Bertram Gunzelmann ,  Arkadi Molev-Shteiman

发明人： Bertram Gunzelmann ,  Arkadi Molev-Shteiman

IPC分类号： H04B1/00

CPC分类号： H04B1/708 ,  H04B1/7095

摘要： An acquisition method for identifying a transmitter, and a correlator for carrying out the method includes correlating a received binary-coded spread sequence having m bits at a frequency f with a locally generated spread sequence by phase-shifting a multiplicity of locally generated spread sequences with respect to the received spread sequence, where f is the frequency of the incoming spread sequence. The received spread sequence is correlated with a locally generated spread sequence at the frequency f. The received spread sequence is stored and the stored, received spread sequence is processed at an oversampling rate i*f. The received, stored spread sequence is split into i sections and the correlation is carried out in i steps. The correlator includes a shift register with feedback. Register positions of the shift register are connected in parallel to a memory input, and the memory output is connected in parallel with the register positions. A further memory holds reference signal sequences and a comparator compares the memory content with further memory content.

摘要翻译： 用于识别发射机的获取方法和用于执行该方法的相关器包括：通过将多个本地生成的扩展序列相移，将频率为f的m位的接收二进制编码扩展序列与本地生成的扩展序列进行相移， 对于接收到的扩展序列，其中f是传入扩展序列的频率。 接收的扩展序列与频率f处的本地生成的扩展序列相关。 存储接收的扩展序列，并以过采样率i * f处理存储的接收扩展序列。 接收的，存储的扩展序列被分成i个部分，并且以i个步骤进行相关。 相关器包括具有反馈的移位寄存器。 移位寄存器的寄存器位置与存储器输入并联，存储器输出与寄存器位置并联。 另一个存储器保存参考信号序列，并且比较器将存储器内容与进一步的存储器内容进行比较。

公开(公告)号：US20060274822A1

公开(公告)日：2006-12-07

申请号：US11378663

申请日：2006-03-17

申请人： Christian Stahlberg ,  Per-Ludvig Normark

发明人： Christian Stahlberg ,  Per-Ludvig Normark

IPC分类号： H04B1/00

CPC分类号： H04L65/607 ,  H04B1/707 ,  H04B1/7077 ,  H04B1/7095 ,  H04B2201/7071 ,  H04B2201/70715

摘要： The present invention relates to production of a decoded signal (Aτ) based on in an incoming stream of data samples (d(k)) representing at least one downconverted digitized spread spectrum source signal. A number (NM) of the received data samples (d(k)) are divided into a first number (N) of data blocks, where each data block contains a second number (M) of samples. The second number (M) is an integer larger than or equal to two. Each of the data blocks is then correlated with a respective local code replica segment (p(k)) to produce a first number (N) of intermediate accumulation results (ΣI; ΣQ). To enable production of a decoded signal (Aτ) being compensated for a Doppler shift relative to a downconverting frequency for the least one spread spectrum source signal, the intermediate accumulation results (ΣI; ΣQ) are correlated with a carrier vector (s[z]I; s[zQ) expressing such a Doppler shift. However, according to the invention, the carrier vector (s[z]I; s[z]Q) only contains a target number (Z) of carrier values (s1I:sZI; s1Q:sZQ) (i.e. different carrier amplitude levels), where the target number (Z) is smaller than or equal to the first number (N). Normally, the target number (Z) is substantially smaller than the first number (N). Thus, depending on the first number (N) and the target number (Z) for the relevant carrier vector (s[Z]I; s[Z]Q), a number of consecutive results of the intermediate accumulation results (ΣI; ΣQ) are combined into a number of aggregated accumulation results (c1I:cZI; c1Q:cZQ), which is equal to the target number (Z). Thereafter, the aggregated accumulation results (c1I:cZI; c1Q:cZQ) are correlated with the carrier vector (s[Z]I; s[z]Q) to produce the decoded signal (Aτ). The invention is well adapted for implementation of software GNSS receivers.

公开(公告)号：US07133438B2

公开(公告)日：2006-11-07

申请号：US09767379

申请日：2001-01-22

申请人： Bertram Gunzelmann ,  Arkadi Molev-Shteiman

发明人： Bertram Gunzelmann ,  Arkadi Molev-Shteiman

IPC分类号： H04B1/69 ,  H04L27/06

CPC分类号： H04B1/708 ,  H04B1/7095

摘要： Communications acquisition method for correlating an incoming binary-coded spread sequence having m bits and arriving at a frequency f with a locally generated spread sequence by phase-shifting a multiplicity of locally generated spread sequences with respect to the received spread sequence. The received spread sequence being correlated with a locally generated spread sequence at the frequency f. The received spread sequence is stored. The received, stored spread sequence is split into sections and the correlation is carried out in steps at an oversampling rate. A correlator includes a shift register with feedback. Register positions of the shift register are connected in parallel to a memory input, and the memory output is connected in parallel with the register positions. A further memory holds reference signal sequences and another comparator compares the memory content with further memory content.

摘要翻译： 通信采集方法，用于通过相对于所接收的扩展序列相移多个本地生成的扩展序列来将具有m位的输入二进制编码扩展序列与本地生成的扩展序列相关， 接收的扩展序列与频率f处的本地生成的扩展序列相关。 收到的扩展序列被存储。 接收的，存储的扩展序列被分割成部分，并且以过采样率的步骤进行相关。 相关器包括具有反馈的移位寄存器。 移位寄存器的寄存器位置与存储器输入并联，存储器输出与寄存器位置并联。 另一个存储器保存参考信号序列，另一个比较器将存储器内容与进一步的存储器内容进行比较。

公开(公告)号：US07088825B2

公开(公告)日：2006-08-08

申请号：US10015531

申请日：2001-12-12

申请人： Sharad Sambhwani ,  Ghobad Heidari

发明人： Sharad Sambhwani ,  Ghobad Heidari

IPC分类号： H04N7/167

CPC分类号： H04B1/70752 ,  H04B1/70735 ,  H04B1/708 ,  H04B1/7083 ,  H04B1/7095

摘要： A system for detecting and identifying the identity of a base station or cell which transmits a scrambling code is provided. According to one aspect of the system, the system is used to perform scrambling code detection of eight (8) primary cells (each scrambling code being spaced sixteen (16) chips apart) in a group. According to another aspect of the system, a single scrambling code generator is used to generate a master scrambling code. The master scrambling code is then used to create individual scrambling codes which are used in correlation with received signals to detect in parallel which one of the eight (8) possible primary cells in the group transmitted the received signals. According to yet another aspect of the system, each of the correlators maintains a corresponding segment of the master scrambling code. For every sixteen (16) chips, a new segment of the master scrambling code is introduced into one of the correlators, a segment of the master scrambling code is dropped from another correlator, and segments of the master scrambling code are sequentially shifted or propagated through the remaining correlators; and concurrent correlations are performed by the correlators using their respective corresponding segments of the master scrambling code and newly received signals.

公开(公告)号：US20060078043A1

公开(公告)日：2006-04-13

申请号：US11288663

申请日：2005-11-28

申请人： Laurent Ouvry ,  Didier Lattard ,  Jean-Rene Lequepeys

发明人： Laurent Ouvry ,  Didier Lattard ,  Jean-Rene Lequepeys

IPC分类号： H04B1/707

CPC分类号： H04B1/708 ,  H04B1/7095 ,  H04B2201/70707 ,  H04J13/0022

摘要： The receiver includes at least one channel (V1) with an adapted filter (20) and with a symbol clock signal (Hs) recovery circuit (12) and other channels (V2, . . . , Vk) with a sliding correlator (302, . . . , 30k) using the symbol clock signal (Hs) produced by the channel (V1) with adapted filter. Application for radiocommunications with mobiles.

摘要翻译： 接收机包括具有适配滤波器（20）和符号时钟信号（Hs）恢复电路（12）和其它信道（V 2）的至少一个信道（V SUB 1） 使用符号时钟的滑动相关器（30×2×...，30K），使用符号时钟 由具有适配滤波器的通道（V SUB1）产生的信号（Hs）。 移动电话无线电通信应用。

公开(公告)号：US20050144146A1

公开(公告)日：2005-06-30

申请号：US10745817

申请日：2003-12-29

申请人： Jiao Gong ,  Wei Jiang

发明人： Jiao Gong ,  Wei Jiang

IPC分类号： G06F15/18 ,  H04B1/707

CPC分类号： H04B1/7113 ,  H04B1/70755 ,  H04B1/7095 ,  H04B2201/70707

摘要： A decision processor for 802.11b codewords for 1 Mb and 2 Mb data rates includes a sliding correlator for the acquisition of correlation peaks. During a training interval, these correlation peaks are summed into a channel profile memory. The correlation peaks corresponding to a codeword are added into the channel profile memory, and correlation peaks corresponding to the inverse of this codeword are inverted and added into the channel profile memory during the training interval. After the training interval, a decision interval follows whereby correlation peaks are multiplied by the complex conjugate of the contents of the channel profile memory. The multiplication results are accumulated over a codeword window interval to produce a decision output.

摘要翻译： 用于1Mb和2Mb数据速率的用于802.11b码字的决策处理器包括用于获取相关峰值的滑动相关器。 在训练间隔期间，将这些相关峰值相加到通道轮廓存储器中。 对应于码字的相关峰值被加入到信道简档存储器中，并且与该码字的逆相对应的相关峰值在训练间隔期间被反转并添加到信道简档存储器中。 在训练间隔之后，确定间隔，由此将相关峰乘以信道简档存储器的内容的复共轭。 乘法结果在码字窗口间隔上累加以产生决策输出。