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1. 发明授权

US06819707B2 Method and apparatus for performing signal correlation using historical correlation data 有权
标题翻译：使用历史相关数据进行信号相关的方法和装置
公开(公告)号：US06819707B2
公开(公告)日：2004-11-16
申请号：US09963345
申请日：2001-09-26
申请人： Charles Abraham , Frank van Diggelen
发明人： Charles Abraham , Frank van Diggelen
IPC分类号： H04L2730
CPC分类号： G01S19/29 , G01S19/23 , G01S19/30 , G01S19/37 , G06F17/15 , H04B1/707 , H04B1/70752 , H04B1/7077 , H04B2201/70715
摘要： A method and apparatus for computing a convolution between an input GPS signal and a reference code by generating the convolution result in real time without storing unprocessed signal samples. The apparatus comprises a vector multiplier running at high speed to achieve the same result as a vector multiplier sized to process an entire epoch. Additionally, historical correlation data is used to correct frequency and timing errors.
摘要翻译：一种用于通过在不存储未处理的信号样本的情况下实时产生卷积结果来计算输入GPS信号和参考代码之间的卷积的方法和装置。该装置包括以高速运行的矢量乘法器，以实现与负载处理整个历元的矢量乘法器相同的结果。此外，历史相关数据用于校正频率和定时误差。

2. 发明授权

US06728294B1 Radio communication system 有权
标题翻译：无线通信系统
公开(公告)号：US06728294B1
公开(公告)日：2004-04-27
申请号：US09575995
申请日：2000-05-23
申请人： Ryuji Kohno , Hiroki Mochizuki
发明人： Ryuji Kohno , Hiroki Mochizuki
IPC分类号： H04L2730
CPC分类号： H04B1/715 , H04B7/0408 , H04B7/0617 , H04B7/086 , H04B2001/7152
摘要： A microprocessor reads the information such as directions of arrival about a desired wave and an undesired wave for every terminal station and for every hopping frequency, and their receiving powers, and the like, from a desired wave/undesired wave information inputting unit. On the basis of the information items, the microprocessor calculates the weight values of a transmitting section and a receiving section for every terminal station and every hopping frequency, and stores them in a weight value table. At the time of performing radio communication, the microprocessor reads the weight values of the receiving section and the transmitting section corresponding to every terminal station and every hopping frequency from the weight value table every time the frequency is hopped, and sets them in attenuators, and phase shifters. As a result, the optimum directivity pattern is formed for every hopping frequency, and high-quality communication can be thereby achieved.
摘要翻译：微处理器从期望的波/不需要波信息输入单元读取关于每个终端的期望波和不期望波的到达方向以及每个跳频的信息及其接收功率等。基于该信息项目，微处理器计算每个终端的发送部分和接收部分的权重值以及每个跳频，并将它们存储在权重值表中。在执行无线电通信时，微处理器在每次跳频时从权重值表读取对应于每个终端的接收部分和发送部分的重量值以及每个跳频，并将它们设置为衰减器，并且移相器结果，对于每个跳频形成最佳方向性图案，从而可以实现高质量的通信。

3. 发明授权

US06590928B1 Frequency hopping piconets in an uncoordinated wireless multi-user system 失效
标题翻译：不协调的无线多用户系统中的跳频微微网
公开(公告)号：US06590928B1
公开(公告)日：2003-07-08
申请号：US08932911
申请日：1997-09-17
申请人： Jacobus Cornelis Haartsen
发明人： Jacobus Cornelis Haartsen
IPC分类号： H04L2730
CPC分类号： H04W84/20 , H04B1/7143 , H04W8/24 , H04W8/26 , H04W40/04 , H04W40/30
摘要： A wireless network includes master and slave units. The master sends a master address and clock to the slaves. Communication is by means of a virtual frequency hopping channel whose hopping sequence is a function of the master address, and whose phase is a function of the master clock. Transmitted inquiry messages solicit slave address and topology information from the slaves, which may be used to generate a configuration tree for determining a route for a connection between the master and slave units. Slave address and topology information may include an own address from each of the slave units and only first order address lists from each of the slave units. Generating the configuration tree involves generating a hierarchy of connectivity rings from the first order address lists. Each connectivity ring may be generated in accordance with a rule that a higher-numbered connectivity ring cannot include nodes representing units that are already represented by a node in a lower-numbered connectivity ring. Alternatively, each connectivity ring may be generated by considering a present numbered connectivity ring having parent nodes, and including in a next higher-numbered connectivity ring those nodes representing all children of the parent nodes such that no descendant of a parent can represent the same unit as the parent; no descendant of a parent's child can represent the same unit as any of the parent's children; and no child of any parent can have the same name as any other child of said any parent.
摘要翻译：无线网络包括主设备和从设备。主机向主机发送主地址和时钟。通过虚拟跳频信道进行通信，跳频序列是主地址的函数，其相位是主时钟的函数。发送的查询消息从从站请求从站地址和拓扑信息，这些信息可用于生成用于确定主站和从站单元之间的连接的路由的配置树。从地址和拓扑信息可以包括来自每个从单元的自己的地址，并且仅包括来自每个从单元的一阶地址列表。生成配置树涉及从第一个订单地址列表生成连接环的层次结构。可以根据规则来生成每个连接环，其中较高编号的连接环不能包括代表已经由较低编号的连接环中的节点表示的单元的节点。或者，可以通过考虑具有父节点的当前编号的连接环来生成每个连接环，并且在下一个更高编号的连接环中包括表示父节点的所有子节点的那些节点，使得没有父节点的后代可以表示相同的单元作为父母; 父母子女的后裔不得代表父母子女的同一单位; 并且任何父母的任何子女都不得与所述任何父母的任何其他孩子具有相同的名称。

4. 发明授权

US06516022B2 Processing for improved performance and reduced pilot 有权
公开(公告)号：US06516022B2
公开(公告)日：2003-02-04
申请号：US10043850
申请日：2002-01-11
申请人： Fatih M. Özlütürk , David K. Mesecher , Alexander M. Jacques
发明人： Fatih M. Özlütürk , David K. Mesecher , Alexander M. Jacques
IPC分类号： H04L2730
CPC分类号： H04B1/7085 , H04B1/30 , H04B1/707 , H04B1/70755 , H04B1/7093 , H04B1/7115 , H04B2201/70701 , H04L25/0212 , H04L27/0014 , H04L2027/0067
摘要： The present invention is a user equipment for carrier offset recovery during reception of a communication signal over an air interface using a plurality of channels in a pilot signal. The user equipment comprises an adaptive match filter for producing a filtered signal using a weighting signal, a rake receiver for producing a filter weighting signal, and a means for defining the filter weighting signal with a correction signal. A channel despreader is also included in the user equipment for despreading the filtered signal using a pseudo-noise signal for a selected channel to produce a despread channel signal of the selected channel. A pilot channel despreader is coupled to the adaptive match filter output for despreading the filter signal using a pseudo-noise signal generated for the pilot channel, producing a despread pilot signal of the pilot channel. A hard decision processor, associated with a complex conjugate processor, is also included in the user equipment for producing the correction signal. A phase lock loop, which uses the despread pilot signal, produces a phase correction signal, which is applied to produce phase corrected channel signals.

5. 发明授权

US06507602B1 Smoothing receiver channel estimates using spectral estimation 有权
标题翻译：使用频谱估计的平滑接收机信道估计
公开(公告)号：US06507602B1
公开(公告)日：2003-01-14
申请号：US09227180
申请日：1999-01-07
申请人： Paul W. Dent
发明人： Paul W. Dent
IPC分类号： H04L2730
CPC分类号： H04B1/7115 , H04B1/7093 , H04L25/0204
摘要： A receiving apparatus comprises a receiver receiving signals via multiple propagation paths having different propagation delays and converting the signals to digital samples for processing. A channel estimator is operatively coupled to the receiver for correlating periodically selected groups of the digital samples corresponding to known symbols and periodically producing numerical estimates related to amplitudes and phases of the delayed propagation paths. A filter system filters the numerical estimates using filters periodically adapted to center frequencies of variations of the numerical estimates. A data decoder is operatively coupled to the receiver and the filter system for decoding data using the filtered estimates and the digital data.
摘要翻译：一种接收装置，包括经由具有不同传播延迟的多个传播路径接收信号的接收机，并将该信号转换成数字样本进行处理。信道估计器可操作地耦合到接收机，用于对应于已知符号的周期性选择的数字样本组，并周期性地产生与延迟传播路径的幅度和相位有关的数值估计。滤波器系统使用周期性地适应于数值估计的变化中心频率的滤波器来过滤数值估计。数据解码器可操作地耦合到接收器和滤波器系统，用于使用经滤波的估计和数字数据对数据进行解码。

6. 发明授权

US06445726B1 Direct conversion radio receiver using combined down-converting and energy spreading mixing signal 有权
标题翻译：直接转换无线电接收机采用组合下变频和能量扩散混频信号
公开(公告)号：US06445726B1
公开(公告)日：2002-09-03
申请号：US09302604
申请日：1999-04-30
申请人： Ranjit Gharpurey
发明人： Ranjit Gharpurey
IPC分类号： H04L2730
CPC分类号： H03D1/00 , H03D3/001 , H03D2200/0047 , H04B1/30 , H04B1/69
摘要： A receiver (54) comprising an input for receiving an RF signal (FIG. 7) centered at a first frequency and having a bandwidth. The receiver also comprises a first mixer (62) for producing a first output signal. The first output signal results from mixing the RF signal with a signal having an energy spreading portion (p(t)) and a down-converting portion (c(t)). Moreover, this first output signal comprises a self-mixing DC signal (c(t)p(t) self-mixing DC component) and a down-converted and energy spread RF signal (FIG. 11). The receiver further comprises a second mixer (70) for producing a second output signal by mixing a signal responsive to the first output signal with the energy spreading portion of the signal. The second output signal comprises two signals, namely: (1) a baseband signal (down-converted RFA1) responsive to the down-converted and energy spread RF signal; and (2) a portion of the spread DC signal (spread DC).
摘要翻译：一种接收器（54），包括用于接收以第一频率为中心并具有带宽的RF信号（图7）的输入。接收机还包括用于产生第一输出信号的第一混频器（62）。第一输出信号是通过将RF信号与具有能量扩展部分（p（t））和下变频部分（c（t））的信号混合而产生的。此外，该第一输出信号包括自混合DC信号（c（t）p（t）自混合DC分量）和下变频和能量扩展RF信号（图11）。接收机还包括第二混频器（70），用于通过将响应于第一输出信号的信号与信号的能量扩展部分相混合来产生第二输出信号。第二输出信号包括两个信号，即：（1）响应于下变频和能量扩展的RF信号的基带信号（下变频RFA1）; 和（2）扩展的DC信号的一部分（扩展DC）。

7. 发明授权

US06442189B1 Binary code phase offset calculation method and a binary code phase synchronization method by using the phase offset 失效
标题翻译：二进制码相位偏移计算方法和二进制码相位同步方法通过使用相位偏移
公开(公告)号：US06442189B1
公开(公告)日：2002-08-27
申请号：US09113288
申请日：1998-07-10
申请人： Young Joon Song , Young Yearl Han , Ok Hyun Jeong
发明人： Young Joon Song , Young Yearl Han , Ok Hyun Jeong
IPC分类号： H04L2730
CPC分类号： H04B1/7085
摘要： The present invention is to provide a phase offset calculation method of binary code being used in a mobile communication system, a binary code error detection method for detecting errors occurred in the received binary code by using the phase offset of the binary code and a synchronization method of binary code greatly reducing an acquisition time by using the error detection. The present invention to calculate the phase offset of binary code includes a step of receiving the binary code Ti(C) shifting with a period n, a step of calculating a binary code weight accumulation value by selecting the accumulator function weight value l of the binary code and then by applying the weight value to said binary code, a step of obtaining a phase shift value by shifting the phase of the binary code weight accumulator value, and a step of calculating the phase offset of the binary code by performing an operation of modulo n on said binary code weight accumulator value. Furthermore, an error detection method of binary code for detecting errors in a received binary code by using the phase offset calculation method of binary code and the synchronization method of binary code performing in high speed a synchronization acquisition of the phase synchronization signal by using the phase offset calculation method of binary code and the error detection method are provided.
摘要翻译：本发明提供一种在移动通信系统中使用的二进制码的相位偏移计算方法，二进制码错误检测方法，用于通过使用二进制码的相位偏移来检测接收到的二进制码中发生的错误，同步方法的二进制代码通过使用错误检测大大减少了采集时间。用于计算二进制码的相位偏移的本发明包括接收以周期n移位的二进制码Ti（C）的步骤，通过选择二进制码权重累加值的累加器函数权重值l来计算二进制码权重累加值的步骤代码，然后通过将权重值应用于所述二进制代码，通过移位二进制代码权重累加器值的相位来获得相移值的步骤，以及通过执行二进制代码权重累加器值的操作来计算二进制代码的相位偏移的步骤所有二进制代码权重累加器值的模n。此外，通过使用二进制码的相位偏移计算方法和通过使用相位同步获取相位同步信号的二进制码的高速同步方法来检测接收的二进制码中的错误的二进制码的错误检测方法提供二进制码的偏移计算方法和错误检测方法。

8. 发明授权

US06377613B1 Communication apparatus for code division multiple accessing mobile communications system 有权
标题翻译：用于码分多址移动通信系统的通信装置
公开(公告)号：US06377613B1
公开(公告)日：2002-04-23
申请号：US09422186
申请日：1999-10-22
申请人： Manabu Kawabe , Seishi Hanaoka , Nobukazu Doi
发明人： Manabu Kawabe , Seishi Hanaoka , Nobukazu Doi
IPC分类号： H04L2730
CPC分类号： H04B1/7093 , H04B1/7117 , H04B2201/7071
摘要： To simplify the structure of the demodulator and reduce the hardware scale in a code division multiple accessing communication apparatus. A plurality of base band received signals are multiplexed in a time division manner, so that one matched filter executes path searching or a time division multiplexing processing is executed for demodulation in a despreader. Or path searching and demodulation for a plurality of codes are executed with time division multiplexing of outputs from a plurality of code generators.
摘要翻译：为了简化解调器的结构，并减少了码分多址通信装置中的硬件规模。多个基带接收信号以时分方式多路复用，使得一个匹配滤波器执行路径搜索，或者在解扩器中执行时分复用处理以进行解调。或者用于多个码的路径搜索和解调通过来自多个码发生器的输出的时分复用来执行。

9. 发明授权

US06370183B1 Predictive rake receiver for CDMA mobile radio systems 有权
标题翻译： CDMA移动无线电系统的预测耙式接收机
公开(公告)号：US06370183B1
公开(公告)日：2002-04-09
申请号：US09178856
申请日：1998-10-26
申请人： Paul Newson , Frank Martin van Heeswyk
发明人： Paul Newson , Frank Martin van Heeswyk
IPC分类号： H04L2730
CPC分类号： H04B1/7115 , H04B1/7117
摘要： A rake receiver with a finger for each of a plurality of multipath components displaced in time has provision for predicting short-term variations in the strength of each component and adapting the coefficients of each finger accordingly, thus reducing the error rate, particularly in high-data-rate applications in a time-variant environment.
摘要翻译：具有用于时间上移位的多个多路径分量中的每一个的手指的耙式接收器具有用于预测每个分量的强度的短期变化并且相应地适配每个手指的系数，从而降低误码率，数据速率应用程序在时变环境中。

10. 发明授权

US06363103B1 Multistage interference cancellation for CDMA applications using M-ary orthogonal moduation 失效
标题翻译：使用M-ary正交调制的CDMA应用的多级干扰消除
公开(公告)号：US06363103B1
公开(公告)日：2002-03-26
申请号：US09058065
申请日：1998-04-09
申请人： R. Michael Buehrer , Sridhar Gollamudi , Steven P. Nicoloso
发明人： R. Michael Buehrer , Sridhar Gollamudi , Steven P. Nicoloso
IPC分类号： H04L2730
CPC分类号： H04B1/71072
摘要： A multistage or parallel interference canceler (PIC) arrangement is disclosed for use in a communications system using code division multiple access (CDMA) with M-ary orthogonal modulation. All the M symbol waveforms, weighted according to their correlations with a despread signal, are combined to form a reconstructed symbol waveform for each user in each stage. The reconstructed symbol waveforms for all users are summed to form an estimated composite received signal having reduced interference which is subtracted from the composite received signal to generate a residual interference signal (RIS). While the total received signal is despread in the first stage of the PIC, the RIS or cancellation residue signal from the immediately preceding stage is used in succeeding stages of the PIC. A final decision is made by despreading the RIS from the final stage of the PIC, correlating it with the M symbol waveforms using an FHT. A weight vector from the final stage is then added to the output of the FHT. The real part or the squared magnitude of the resulting correlations, depending, respectively, on whether coherent or noncoherent demodulation is used, is then taken. The final symbol decision is made by selecting the symbol corresponding to the maximum component resulting decision statistic vector.
摘要翻译：公开了一种使用具有M进制正交调制的码分多址（CDMA）的通信系统中的多级或并联干扰消除器（PIC）装置。根据与去扩展信号的相关性加权的所有M个符号波形被组合以在每个阶段中为每个用户形成重构符号波形。将所有用户的重构符号波形相加以形成具有减小的干扰的估计复合接收信号，其从复合接收信号中减去以产生残留干扰信号（RIS）。虽然在PIC的第一级中解扩了总接收信号，但是在PIC的后续阶段使用来自紧接在前级的RIS或消除残留信号。最终决定通过从PIC的最后阶段解扩RIS，使用FHT将其与M个符号波形相关联。然后将来自最终级的权重向量加到FHT的输出中。然后，取决于相关或非相干解调的结果相关性的实部或平方幅度。通过选择对应于最大成分判定统计量向量的符号来进行最终符号判定。

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