公开(公告)号：US20040259502A1

公开(公告)日：2004-12-23

申请号：US10465189

申请日：2003-06-19

Inventor： Michael N. Weidner ,  Nikhil P. Iyer ,  Kirk B. Stuart

IPC: H04B001/00 ,  H04B015/00

CPC classification number: H04B1/109

Abstract: A system and method provides intermodulation (IM) interference mitigation in a two-way radio receiver (100) by utilizing various states of an automatic gain control circuit (AGC) (118) controlled by RSSI levels and timers.

Abstract translation: 系统和方法通过利用由RSSI电平和定时器控制的自动增益控制电路（AGC）118的各种状态在双向无线电接收机（100）中提供互调（IM）干扰减轻。

公开(公告)号：US20040254768A1

公开(公告)日：2004-12-16

申请号：US10432911

申请日：2004-07-30

Inventor： Yeong-Ho Kim ,  Sung Kim ,  Byeong-Kwon Kwak ,  Yong-Woon Shin

IPC: H03F001/26 ,  G06F015/00 ,  H04B015/00

CPC classification number: H04L67/36 ,  G06F16/2465 ,  G06Q10/06 ,  G06Q10/10 ,  H04L67/02 ,  Y10S707/99931 ,  Y10S707/99945 ,  Y10S707/99953

Abstract: The present invention discloses a workflow mining system which can evaluate, analyze and determine previous execution results of processes or activities by applying a data mining technique to workflow log data accumulated during the operation of a workflow system, and a method therefor. The workflow mining system extracts necessary data from a database of a workflow server, generates an analysis table, performs a preprocessing process for removing unnecessary attributes on the basis of the extracted data or converting a digital variable into a symbolic variable, and analyzes a decision making tree or association by using the preprocessed data. C4.5 algorithm is used for the decision making tree analysis and Apriori algorithm is used for the association analysis.

Abstract translation: 本发明公开了一种工作流挖掘系统，其可以通过将数据挖掘技术应用于在工作流系统的操作期间积累的工作流日志数据来评估，分析和确定过程或活动的先前执行结果及其方法。 工作流挖掘系统从工作流服务器的数据库中提取必要的数据，生成分析表，根据提取的数据执行去除不必要属性的预处理过程，或将数字变量转换成符号变量，分析决策 树或关联通过使用预处理数据。 C4.5算法用于决策树分析，Apriori算法用于关联分析。

公开(公告)号：US20040235506A1

公开(公告)日：2004-11-25

申请号：US10484224

申请日：2004-06-24

Inventor： Norbert Roettger ,  Klaus Pai

IPC: H04B007/00 ,  H04Q007/00 ,  H04B007/005 ,  H04B007/01 ,  H04B007/015 ,  H04B015/00

CPC classification number: H04B7/2606 ,  H04B7/155 ,  H04W56/001 ,  H04W56/005 ,  H04W92/10

Abstract: A method of synchronising a wireless communication unit in a communication system, the method comprising at said wireless communication unit the steps of: monitoring transmissions from a communication system and processing (400) frequency and/or timing information from the communication system. The method further includes the steps of transmitting (404) frequency and/or timing information by said wireless communication unit; receiving and processing (406) said frequency and/or timing information transmitted by said wireless communication unit at a receiving portion of said wireless communication unit. The wireless communication unit then compares frequency and/or timing information transmitted from the communication system to that transmitted by said wireless communication unit; and synchronises said wireless communication unit if said comparison step does not yield a match. A wireless communication unit and a communication system are also provided.

Abstract translation: 一种在通信系统中同步无线通信单元的方法，所述方法包括在所述无线通信单元处的步骤：监视来自通信系统的传输并处理（400）来自通信系统的频率和/或定时信息。 该方法还包括以下步骤：通过所述无线通信单元发送（404）频率和/或定时信息; 在所述无线通信单元的接收部分接收和处理（406）由所述无线通信单元发送的所述频率和/或定时信息。 然后，无线通信单元将从通信系统发送的频率和/或定时信息与由所述无线通信单元发送的频率和/或定时信息进行比较; 并且如果所述比较步骤不产生匹配，则使所述无线通信单元同步。 还提供无线通信单元和通信系统。

公开(公告)号：US20040213354A1

公开(公告)日：2004-10-28

申请号：US10424424

申请日：2003-04-28

Inventor： William W. Jones ,  George A. Zimmerman ,  Christopher Jude Pagnanelli

IPC: H04B015/00 ,  H04B001/38

CPC classification number: H04B3/32

Abstract: A method and apparatus for reducing crosstalk in a multi-channel communication system is disclosed. In one embodiment, outgoing signals in a multi-channel environment are manipulated into a transform domain, such as the frequency domain. Thereafter, the signals may be combined and modified based on a weighting variable to create a cancellation signal. Combined processing greatly reduces system complexity and increases processing speed. After processing in the transform domain, the cancellation signal undergoes further processing to return the cancellation signal into the time domain. The cancellation signal may then be combined with received signals to cancel crosstalk or echo. A method and apparatus for crosstalk cancellation in the analog domain and digital domain are also disclosed. Cancellation at least partially in the analog domain reduces the dynamic range requirements for digital to analog converters within the front-end processing system of a receiver and thereby reduces clipping and increases operating speed.

Abstract translation: 公开了一种用于减少多声道通信系统中的串扰的方法和装置。 在一个实施例中，多信道环境中的输出信号被操纵成变换域，例如频域。 此后，可以基于加权变量组合和修改信号以产生消除信号。 组合处理大大降低了系统复杂度并提高了处理速度。 在变换域中处理之后，消除信号进行进一步的处理，以将取消信号返回到时域。 然后可以将消除信号与接收的信号组合以消除串扰或回波。 还公开了在模拟域和数字域中用于串扰消除的方法和装置。 至少部分地在模拟域中的取消减少了接收机的前端处理系统内的数模转换器的动态范围要求，从而减少了削波并提高了操作速度。

公开(公告)号：US20040213331A1

公开(公告)日：2004-10-28

申请号：US10755464

申请日：2004-01-13

Applicant: Broadcom Corporation

Inventor： Miguel Peeters ,  Raphael Cassiers

IPC: H04K001/00 ,  H04B015/00 ,  H04L027/30 ,  H04L005/16

CPC classification number: H04L25/03866 ,  H04J13/00 ,  H04J13/10 ,  H04L27/2613 ,  H04L27/262

Abstract: The present invention provides systems and methods for pseudo-random signal generation in a multi-carrier communications system. In embodiments, a transmitter includes a pseudo-random bit sequence (PRBS) generator and Medley signal generator. The PRBS generator can operate in at least one of the following modes: a parameter selection mode, a scrambler mode, and/or a combination mode. The Medley signal generator receives an output bit sequence from the PRBS generator. The Medley signal generator then generates a Medley signal which includes a set of Medley tones encoded based on the output bit sequence from the PRBS generator. The Medley signal is then sent over channels of a multi-carrier communication system such as an ADSL system.

Abstract translation: 本发明提供了在多载波通信系统中伪随机信号产生的系统和方法。 在实施例中，发射机包括伪随机比特序列（PRBS）生成器和混合信号发生器。 PRBS发生器可以以下列模式中的至少一种工作：参数选择模式，加扰器模式和/或组合模式。 混合信号发生器从PRBS发生器接收输出位序列。 然后，混合信号发生器产生一个混合信号，该信号包括基于来自PRBS发生器的输出比特序列编码的一组混合音调。 然后，通过诸如ADSL系统的多载波通信系统的信道来发送混频信号。

公开(公告)号：US20040204036A1

公开(公告)日：2004-10-14

申请号：US10289267

申请日：2002-11-05

Applicant: Fodus Communications, Inc.

Inventor： Steve S. Yang

IPC: H04B001/26 ,  H04B015/00 ,  H04M001/00 ,  H04B001/38

CPC classification number: H04B1/403

Abstract: A configurable dual-band RF transceiver with a cascaded frequency conversion scheme (DBXVR) is disclosed for the processing of any selected RF channel signal specified by the open standard IEEE 802.11 a/b/g for Wireless LAN. The DBXVR comprises two switchably connected antennae for receiving and transmitting any selected RF channel signal and two subsets of signal processing hardware. The first signal processing subset is designed to perform all related frequency conversion, signal filtering and amplification between the b/g-band and its corresponding Baseband Inphase (I) and Quadrature (Q) signals. The second signal processing subset is designed to perform all related frequency conversion, signal filtering and amplification between the a-band, located at a disjointed and much higher frequency range than the b/g-band, and its corresponding b/g-band frequency for an ultimate, cascaded second signal processing into the Baseband I and Q signals using essentially the same hardware from the first signal processing subset.

Abstract translation: 公开了一种具有级联频率转换方案（DBXVR）的可配置双频RF收发器，用于处理由用于无线LAN的开放标准IEEE 802.11a / b / g指定的任何选定的RF信道信号。 DBXVR包括两个可切换连接的天线，用于接收和发送任何所选的RF信道信号和两个信号处理硬件子集。 第一信号处理子集被设计为执行b / g频带与其对应的基带同相（I）和正交（Q）信号之间的所有相关频率转换，信号滤波和放大。 第二信号处理子集被设计为执行位于与b / g频带不相交和高得多的频率范围的a频带之间的所有相关频率转换，信号滤波和放大及其对应的b / g频带频率 用于使用与第一信号处理子集基本上相同的硬件对基带I和Q信号进行最终级联的第二信号处理。

公开(公告)号：US20040203474A1

公开(公告)日：2004-10-14

申请号：US10248434

申请日：2003-01-20

Applicant: COGNIO, INC.

Inventor： Karl A. Miller ,  David S. Kloper ,  Neil R. Diener

IPC: H04B001/10 ,  H04B015/00 ,  H04B001/00 ,  H04B007/00

CPC classification number: H04L1/0001 ,  H04B1/713

Abstract: Several techniques are provided for use by wireless devices to avoid interference with signals that are of a periodic or quasi-periodic nature that may operate in the same frequency band and proximity. In some cases, the periodic signals are detected and their timing is determined so as to predict when a next interfering event will occur. Devices that are affected by the periodic signal (such as an affected device with information to be transmitted or devices that have information to be transmitted to the affected device) are controlled to prevent transmissions during the interfering intervals. In addition, a process is provided to dynamically fragment a transmit frame of information to transmit part of the information before the interfering interval and the remainder of the information after the interfering interval, rather than waiting to transmit the entire frame until after the interfering interval. Moreover, techniques are provided to correct for clock drift between the periodic signal and a device affected by the periodic signal, as well as for clock drift between a device affected by the periodic signal and other devices that communicate with that device. These techniques prevent interference with periodic signals and in so doing, improve the quality of service of the communication link for both the interfering devices and the other devices.

Abstract translation: 提供了若干技术以供无线设备使用以避免对可能在相同频带和接近度中操作的具有周期性或准周期性质的信号的干扰。 在某些情况下，检测周期信号并确定其定时，以便预测下一个干扰事件将何时发生。 被周期性信号影响的设备（例如具有要发送的信息的受影响设备或具有要发送到受影响设备的信息的设备）被控制以防止在干扰间隔期间的传输。 此外，提供了一种处理，以动态地分割信息的发送帧，以在干扰间隔之前的信息的间隔和信息的干扰间隔之后传送信息的一部分，而不是等待发送整个帧直到干扰间隔之后。 此外，提供技术来校正周期性信号和受周期信号影响的器件之间的时钟漂移，以及在受周期信号影响的器件与与该器件通信的其他器件之间的时钟漂移。 这些技术防止对周期性信号的干扰，并且这样做可以提高干扰设备和其他设备的通信链路的服务质量。

公开(公告)号：US20040203458A1

公开(公告)日：2004-10-14

申请号：US10271280

申请日：2002-10-15

Inventor： Louis M. Nigra

IPC: H04B001/10 ,  H04B015/00 ,  H04B017/00 ,  H04M001/00 ,  H04B001/38

CPC classification number: H04B1/525

Abstract: An apparatus and method to reduce interference in a communication device particularly effective for second-order interference in direct conversion receiver from a co-located transmitter. This is accomplished by characterizing a transfer function of a transmission path from the transmitter to the receiver and applying this transfer function to the baseband signal from the transmitter to provide an estimation of interference to be expected in the received signal. The estimated interference is subtracted from the receiver baseband signal to reduce interference. Adaptive filtering can also be applied to further minimize interference dynamically.

Abstract translation: 一种用于减少通信设备中的干扰的设备和方法，其特别对来自共址发射机的直接转换接收机中的二阶干扰特别有效。 这通过表征从发射机到接收机的传输路径的传递函数来实现，并将该传递函数应用于来自发射机的基带信号，以提供对接收信号中预期的干扰的估计。 从接收机基带信号中减去估计的干扰，以减少干扰。 还可以应用自适应滤波来进一步最小化干扰动态。

公开(公告)号：US20040203402A1

公开(公告)日：2004-10-14

申请号：US10322161

申请日：2002-12-18

Applicant: InterDigital Technology Corporation

Inventor： Guodong Zhang

IPC: H04B015/00 ,  H04B017/00 ,  H04B001/10

CPC classification number: H04W52/262 ,  H04W52/346 ,  H04W52/58 ,  H04W72/02

Abstract: A method and strategy by which cellular networks can dynamically adapt a radio link according to changing conditions of interference. In particular, the method applies to uplink time slots in UMTS-TDD systems. A preferred embodiment describes performing dynamic link adaptation when a UE has two CCTrCHs in an uplink time slot. The method and strategy of the invention are applicable for UMTS-FDD, CDMA-2000, and other systems as well.

Abstract translation: 蜂窝网络可以根据干扰条件的变化动态地适应无线电链路的方法和策略。 具体地，该方法适用于UMTS-TDD系统中的上行链路时隙。 优选实施例描述了当UE在上行链路时隙中具有两个CCTrCH时执行动态链路自适应。 本发明的方法和策略也适用于UMTS-FDD，CDMA-2000和其他系统。

公开(公告)号：US20040203400A1

公开(公告)日：2004-10-14

申请号：US10310481

申请日：2002-12-05

Inventor： Ralph R. Galetti

IPC: H04B001/10 ,  H04B015/00 ,  H04Q007/20 ,  H04M001/00 ,  H04B001/38

CPC classification number: H04M1/72522 ,  H04B1/3805 ,  H04M2250/10

Abstract: A communication device and method for operating the same includes a GPS receiver that periodically generates a position signal, a wireless modem transmitting or receiving messages and a controller that is coupled to the receiver and the modem. The controller discontinues operating the wireless modem when the GPS signal generates the position signal and vice versa to reduce interference with the other device.

Abstract translation: 用于操作其的通信设备和方法包括周期性地生成位置信号的GPS接收器，发送或接收消息的无线调制解调器以及耦合到接收器和调制解调器的控制器。 当GPS信号产生位置信号时，控制器中断无线调制解调器的操作，反之亦然，以减少与其他设备的干扰。