公开(公告)号：US09015220B2

公开(公告)日：2015-04-21

申请号：US13551144

申请日：2012-07-17

申请人： Tilo Ferchland ,  Frank Poegel ,  Eric Sachse

发明人： Tilo Ferchland ,  Frank Poegel ,  Eric Sachse

IPC分类号： G06F17/15 ,  H04B1/707 ,  H04L7/04 ,  H04L7/08

CPC分类号： H04B1/707 ,  G06F17/15 ,  H04B2201/70707 ,  H04L7/042 ,  H04L7/043 ,  H04L7/08

摘要： In certain embodiments, a device includes a first filter. The first filter is operable to produce at least one correlation result by at least correlating an input signal sequence with a link sequence. The first filter includes a delay element. The device also includes a second filter sharing the delay element of the first filter.

摘要翻译： 在某些实施例中，设备包括第一过滤器。 第一滤波器可操作以通过至少将输入信号序列与链路序列相关联来产生至少一个相关结果。 第一滤波器包括延迟元件。 该装置还包括共享第一滤波器的延迟元件的第二滤波器。

公开(公告)号：US08223888B2

公开(公告)日：2012-07-17

申请号：US11953007

申请日：2007-12-07

申请人： Frank Poegel ,  Eric Sachse ,  Michael Schmidt

发明人： Frank Poegel ,  Eric Sachse ,  Michael Schmidt

IPC分类号： H04L27/00

CPC分类号： H04B1/707

摘要： A method and device is provided for the detection of data symbols contained in a received radio signal, whereby each data symbol is allocated transmit-side a symbol value-specific PN sequence of successive PN chips in the chip clock and the PN sequences allocated to the data symbols are offset QPSK modulated. The method of the invention for incoherent detection provides for converting the received radio signal into a complex baseband signal sampled in the chip clock, generating a demodulated signal by differential demodulation of the complex baseband signal sampled in the chip clock, providing the derived sequences, calculating correlation results by correlating the demodulated signal with the derived sequences, and deriving, i.e., detecting, the values of the data symbols by evaluating the correlation results. In this case, each derived sequence is assigned to a PN sequence allocable transmit-side and includes derived chips, whose values in each case correspond to a logic linking of particular PN chips of the PN sequence allocable transmit-side that is assigned the derived sequence. The invention relates furthermore to a corresponding receiving unit.

摘要翻译： 提供了一种用于检测包含在接收的无线电信号中的数据符号的方法和装置，由此每个数据符号被分配给芯片时钟中的连续PN码元的符号值特定PN序列和分配给 数据符号被QPSK调制偏移。 用于非相干检测的本发明的方法提供了将接收的无线电信号转换成在芯片时钟采样的复基带信号，通过在芯片时钟采样的复基带信号的差分解调产生解调信号，提供导出的序列，计算 通过将解调信号与导出序列进行相关，以及通过评估相关结果推导出数据符号的值来检测相关结果。 在这种情况下，将每个派生序列分配给PN序列可分发发射侧，并且包括导出的码片，其值在每种情况下对应于分配了导出序列的PN序列可分发发射端的特定PN码片的逻辑链接 。 本发明还涉及相应的接收单元。

公开(公告)号：US07859435B2

公开(公告)日：2010-12-28

申请号：US12580826

申请日：2009-10-16

申请人： Tilo Ferchland ,  Eric Sachse ,  Michael Schmidt

发明人： Tilo Ferchland ,  Eric Sachse ,  Michael Schmidt

IPC分类号： H03M7/00

CPC分类号： H03H17/0685 ,  H03H17/0275

摘要： A method for a rate increase and a method for a rate reduction of a sampling input sequence into a sampling output sequence is provided. The sampling input sequence is subjected to signal processing. Signal processing maps a spreading with a first factor and an interpolation and a decimation with a second factor to generate the sampling output sequence with use of a counter. The counter and the signal processing are clocked with the higher rate, in each case, of the sampling input sequence or the sampling output sequence, respectively.

摘要翻译： 提供了一种用于速率增加的方法和用于将采样输入序列降低为采样输出序列的方法。 采样输入序列经过信号处理。 信号处理利用第一因子和内插和具有第二因子的抽取来映射扩展，以使用计数器生成采样输出序列。 计数器和信号处理分别以采样输入序列或采样输出序列的每种情况下的较高速率计时。

公开(公告)号：US20100167662A1

公开(公告)日：2010-07-01

申请号：US12649163

申请日：2009-12-29

申请人： Wolfram Kluge ,  Eric Sachse

发明人： Wolfram Kluge ,  Eric Sachse

IPC分类号： H04B17/00

CPC分类号： H04W24/06 ,  G01S11/02 ,  G01S13/84

摘要： A system and method for distance measurement between two nodes of a radio network is provided. A first unmodulated carrier signal is transmitted by the first node and received by the second node. A second unmodulated carrier signal is transmitted by the second node and received by the first node. A first value and a second value of a first phase are measured by the first node, whereby the first value of the first phase is assigned to a first frequency of the received second carrier signal and the second value the first phase is assigned to a second frequency of the received second carrier signal, whereby the first frequency and the second frequency have a frequency difference. A third value and a fourth value of a second phase are measured by the second node, whereby the third value of the second phase is assigned to a third frequency of the received first carrier signal and the fourth value of the second phase to a fourth frequency of the received first carrier signal, whereby the third frequency and the fourth frequency have the frequency difference. The distance is determined from the frequency difference from the first value and the second value of the first phase and from the third value and fourth value of the second phase.

摘要翻译： 提供了一种用于无线电网络的两个节点之间的距离测量的系统和方法。 第一未调制载波信号由第一节点发送并由第二节点接收。 第二未调制载波信号由第二节点发送并由第一节点接收。 由第一节点测量第一相位的第一值和第二值，由此第一相位的第一值被分配给所接收的第二载波信号的第一频率，而第二相位被分配给第二相位 接收到的第二载波信号的频率，由此第一频率和第二频率具有频率差。 由第二节点测量第二相的第三值和第四值，由此将第二相的第三值分配给所接收的第一载波信号的第三频率和第二相位的第四值至第四频率 接收的第一载波信号，由此第三频率和第四频率具有频率差。 该距离根据与第一相位的第一值和第二值的频率差以及第二相的第三值和第四值确定。

公开(公告)号：US07242711B2

公开(公告)日：2007-07-10

申请号：US10464987

申请日：2003-06-19

申请人： Uwe Eckhardt ,  Michael Schmidt ,  Eric Sachse

发明人： Uwe Eckhardt ,  Michael Schmidt ,  Eric Sachse

IPC分类号： H03H7/40

CPC分类号： H04L25/03057 ,  H03H17/0294 ,  H04L2025/0349 ,  H04L2025/03617

摘要： An improved decision feedback equalization technique is provided that may be used in data communications receivers such as those in WLAN (Wireless Local Area Network) systems. The decision feedback equalizer comprises a feedforward filter that is connected to receive an input data signal and output a filter representation thereof. The feedforward filter has a filter characteristic that depends on filter coefficient data. The decision feedback equalizer further comprises a filter coefficient computation unit for generating the filter coefficient data and outputting the generated data to the feedforward filter. At least one data processing circuit is provided that receives a mode switch signal for switching its operational mode. The data processing circuit is arranged for performing a feedforward filter function in one operational mode and a filter coefficient computation function in another operational mode.

摘要翻译： 提供了可用于诸如WLAN（无线局域网）系统中的数据通信接收机的改进的判决反馈均衡技术。 判决反馈均衡器包括前馈滤波器，其被连接以接收输入数据信号并输出​​其滤波器表示。 前馈滤波器具有取决于滤波器系数数据的滤波器特性。 决策反馈均衡器还包括滤波器系数计算单元，用于产生滤波器系数数据并将生成的数据输出到前馈滤波器。 提供至少一个数据处理电路，其接收用于切换其操作模式的模式切换信号。 数据处理电路被配置为在一个操作模式下执行前馈滤波器功能，并且在另一操作模式中执行滤波器系数计算功能。

公开(公告)号：US07184496B2

公开(公告)日：2007-02-27

申请号：US10464965

申请日：2003-06-19

申请人： Uwe Eckhardt ,  Eric Sachse ,  Ingo Kühn

发明人： Uwe Eckhardt ,  Eric Sachse ,  Ingo Kühn

IPC分类号： H03D1/00

CPC分类号： H04B1/708 ,  H04B1/709 ,  H04B1/7093 ,  H04L23/02

摘要： A complementary code decoder technique is provided where the encoded input data is first parallelized. From the parallelized data, correlation values are generated by a correlator circuit that is capable of changing its correlation characteristics depending on at least one control signal. Different control signals are sequentially provided to the correlator circuit thereby driving the correlator circuit to sequentially generate multiple correlation values from the parallelized data, based on different correlation characteristics. From the multiple correlation values, the correlation value that represents the optimum correlation is identified. This technique significantly reduces the gate count of the decoder structure, thus saving chip area and manufacturing costs.

摘要翻译： 提供互补码解码技术，其中编码的输入数据首先并行化。 根据并行化数据，相关值由能够根据至少一个控制信号改变其相关特性的相关器电路产生。 根据不同的相关特性，将不同的控制信号顺序地提供给相关器电路，从而驱动相关器电路从并行数据顺序地产生多个相关值。 从多个相关值中，识别表示最佳相关性的相关值。 该技术显着降低了解码器结构的门数，从而节省了芯片面积和制造成本。

公开(公告)号：US20130155887A1

公开(公告)日：2013-06-20

申请号：US13663187

申请日：2012-10-29

申请人： Eric Sachse ,  Tilo Ferchland ,  Wolfram Kluge

发明人： Eric Sachse ,  Tilo Ferchland ,  Wolfram Kluge

IPC分类号： H04W24/00

CPC分类号： H04W24/08 ,  G01S5/0289 ,  G01S13/84 ,  H04W24/00

摘要： A first node of a radio network initiates a mode for finding the range to a second node. The first node transmits to the second node, with the address of the second node, a range finding command, which switches the second node into the range finding mode and controls a sequence. The first node transmits in a transmission time window a first signal, which is received by the second node in an associated reception time window, a first phase value of the first signal being measured. The second node transmits in a transmission time window a second signal, which is received by the first node in an associated reception time window, a second phase value of the second signal being measured. The first frequency is changed by a frequency difference and the second frequency is changed by the frequency difference in a subsequent time window of the sequence.

摘要翻译： 无线电网络的第一节点发起用于找到第二节点的范围的模式。 第一节点利用第二节点的地址向第二节点传送测距命令，该命令将第二节点切换到测距模式并控制序列。 第一节点在传输时间窗口中发送由相关联的接收时间窗口中的第二节点接收的被测量的第一信号的第一相位值的第一信号。 第二节点在传输时间窗口中发送由相关联的接收时间窗口中的第一节点接收的被测量的第二信号的第二相位值的第二信号。 第一频率被频率差改变，并且第二频率在序列的后续时间窗中被频率差改变。

公开(公告)号：US20130013660A1

公开(公告)日：2013-01-10

申请号：US13551144

申请日：2012-07-17

申请人： Tilo Ferchland ,  Frank Poegel ,  Eric Sachse

发明人： Tilo Ferchland ,  Frank Poegel ,  Eric Sachse

IPC分类号： G06F17/15

CPC分类号： H04B1/707 ,  G06F17/15 ,  H04B2201/70707 ,  H04L7/042 ,  H04L7/043 ,  H04L7/08

摘要： A correlation device is provided that includes an adder for adding an input signal sequence and an auxiliary signal sequence to obtain an addition signal sequence, and a delay element for delaying the addition signal sequence to obtain the auxiliary signal sequence, whereby the delay element has a plurality of coefficient outputs for providing addition signal sequence coefficients. The correlation device comprises further a linking element for the coefficient-wise linking of an addition signal sequence coefficient with a linking coefficient to obtain a correlation result.

摘要翻译： 提供了一种相关装置，其包括用于将输入信号序列和辅助信号序列相加以获得加法信号序列的加法器和用于延迟加法信号序列以获得辅助信号序列的延迟元件，由此延迟元件具有 多个系数输出用于提供加法信号序列系数。 相关装置还包括用于将加法信号序列系数与连接系数进行系数连接以获得相关结果的链接元件。

公开(公告)号：US08300547B2

公开(公告)日：2012-10-30

申请号：US12649074

申请日：2009-12-29

申请人： Eric Sachse ,  Tilo Ferchland ,  Wolfram Kluge

发明人： Eric Sachse ,  Tilo Ferchland ,  Wolfram Kluge

IPC分类号： H04L12/26

摘要： A circuit, system, and method for range finding between two nodes of a radio network, in particular in conformance with the industry standard IEEE 802.15.4. A mode for finding the range to a second node is initiated by the first node. A command for range finding with the address of the second node is transmitted from the first node to the second node in the mode for range finding. The second node is switched into the range finding mode by the command. A sequence is controlled by the command in the range finding mode. As a result of the control by the command, a first signal is transmitted by the first node in a transmission time window of the sequence and the first signal is received by the second node in an associated reception time window of the sequence, and a first phase value of the first signal is measured. As a result of the control by the command, a second signal is transmitted by the second node in a transmission time window of the sequence and the second signal is received by the first node in an associated reception time window of the sequence, and a second phase value of the second signal is measured. As a result of the control by the command, the first frequency of the first signal is changed by a frequency difference and the second frequency of the second signal is changed by the frequency difference in a subsequent time window of the sequence.

公开(公告)号：US20120039424A1

公开(公告)日：2012-02-16

申请号：US13182286

申请日：2011-07-13

申请人： Tilo Ferchland ,  Rolf Jaehne ,  Frank Poegel ,  Eric Sachse

发明人： Tilo Ferchland ,  Rolf Jaehne ,  Frank Poegel ,  Eric Sachse

IPC分类号： H04L27/06

CPC分类号： H04B17/318 ,  H04B1/7073 ,  H04L7/042 ,  H04W4/80 ,  H04W24/00

摘要： In one embodiment, a method includes receiving a radio frequency (RF) signal; synchronizing the received RF signal with a preamble to determine a time base; determining a first energy value of the received RF signal by averaging received signal strength indication (RSSI) values of the received RF signal over a first period of time; determining a second energy value of the received RF signal over a second period of time; determining a difference value between the first energy value and the second energy value; comparing the difference value with a predetermined energy threshold value; determining a quality value of the received RF signal; comparing the quality value of the received RF signal with a predetermined quality threshold value; and, if the difference value exceeds the predetermined energy threshold value or the quality value is below the predetermined quality threshold value, then erasing the time base.

摘要翻译： 在一个实施例中，一种方法包括接收射频（RF）信号; 将接收到的RF信号与前导码同步以确定时基; 通过在第一时间段内平均所接收的RF信号的接收信号强度指示（RSSI）值来确定所接收的RF信号的第一能量值; 在第二时间段内确定所接收的RF信号的第二能量值; 确定所述第一能量值和所述第二能量值之间的差值; 将所述差值与预定能量阈值进行比较; 确定所接收的RF信号的质量值; 将所接收的RF信号的质量值与预定质量阈值进行比较; 并且如果差值超过预定能量阈值或质量值低于预定质量阈值，则擦除时基。