公开(公告)号：US06799023B2

公开(公告)日：2004-09-28

申请号：US09930497

申请日：2001-08-16

申请人： Timo Pinola ,  Kari Haataja

发明人： Timo Pinola ,  Kari Haataja

IPC分类号： H04B106

CPC分类号： H04W52/52 ,  H04W24/00 ,  H04W52/50 ,  H04W74/08

摘要： The invention relates to a method of automatic gain control (AGC) in a base station of a cellular radio network and to a network part in a cellular radio network. The method comprises receiving at least one random access burst transmitted by a subscriber terminal of the cellular radio network on a random access channel. Then the received power of the random access burst is measured, followed by generating subscriber terminal-specific AGC data on the basis of the received power of at least one random access burst. Then, subscriber terminal-specific AGC data is stored. Next, a normal burst transmitted by the subscriber terminal on a stand-alone dedicated control channel is received, and the gain of the normal burst received is controlled by the subscriber terminal-specific AGC data. Finally, the controlled normal burst is subjected to analog-to-digital conversion.

摘要翻译： 本发明涉及蜂窝无线电网络的基站和蜂窝无线电网络中的网络部分的自动增益控制（AGC）的方法。 该方法包括在随机接入信道上接收由蜂窝无线电网络的用户终端发送的至少一个随机接入脉冲串。 然后测量随机接入脉冲串的接收功率，随后基于至少一个随机接入脉冲串的接收功率产生用户终端专用AGC数据。 然后，存储用户终端专用AGC数据。 接下来，接收在独立专用控制信道上由用户终端发送的正常脉冲串，并且接收的正常脉冲串的增益由用户终端特定AGC数据控制。 最后，对受控的正常突发进行模数转换。

公开(公告)号：US06775531B1

公开(公告)日：2004-08-10

申请号：US09596883

申请日：2000-06-20

申请人： John Kaewell ,  Joseph Mark Smith

发明人： John Kaewell ,  Joseph Mark Smith

IPC分类号： H04B106

CPC分类号： H04M1/725 ,  H04B1/036 ,  H04B1/1615 ,  H04B1/40 ,  H04M19/02 ,  H04W52/0235 ,  H04W52/0283 ,  H04W52/029 ,  Y02D70/40

摘要： A subscriber unit of a time division multiple access (TDMA) radiotelephone system is, from a power consumption standpoint, reconfigured in each time slot of a TDMA frame to a power consumption tessellation in which subscriber unit circuit components not needed for communication signal processing in that time slot are powered down, and other components are powered up. Some circuit components are powered down by switching their power supply circuits. In order to minimize the extent of circuitry that must be provided to distribute power consumption control signals, other techniques (which utilize circuitry provided for other purposes), such as clock frequency control or power down commands, also are utilized to modify controlled circuit component power consumption without actually controlling power supply circuits. Loop connection length between the subscriber unit and the subscriber's telephone set, or other terminal equipment, is limited to a length which is much less than the length of a radio link on which the subscriber unit operates. Programmable ring frequency logic controls the frequency of a ringing signal generator, and a high frequency ring control signal is switched on and off in the cadence of ringing operation. Also an expansion header is provided to enable serving plural subscriber loop circuits with the same radio equipment for reducing per line power consumption.

摘要翻译： 从功耗观点来看，时分多址（TDMA）无线电话系统的用户单元在TDMA帧的每个时隙中被重新配置为功率消耗细分，其中不需要用户单元电路组件进行通信信号处理 时隙断电，其他组件通电。某些电路组件通过切换其电源电路进行掉电。 为了最小化必须提供用于分配功率消耗控制信号的电路的程度，使用诸如时钟频率控制或掉电命令的其它技术（其利用为其他目的提供的电路）来修改受控电路组件功率 没有实际控制电源电路的消耗。 用户单元和用户的电话机或其他终端设备之间的环路连接长度被限制为远小于用户单元操作的无线电链路的长度的长度。 可编程振铃频率逻辑控制振铃信号发生器的频率，并且在振铃操作的节奏中开启和关闭高频环控制信号。 此外，还提供了一种扩展头，以使得能够使用相同的无线电设备为多个用户环路电路提供服务，以减少每线路的功耗。

公开(公告)号：US06754485B1

公开(公告)日：2004-06-22

申请号：US09622869

申请日：2000-08-23

申请人： Michael L. Obradovich ,  Philip E. White

发明人： Michael L. Obradovich ,  Philip E. White

IPC分类号： H04B106

CPC分类号： G08G1/137 ,  G01C21/26 ,  G01C21/3697 ,  G06Q30/02 ,  G06Q30/0261 ,  G07C5/008 ,  G08G1/205 ,  H04L12/1845 ,  H04L12/1895 ,  H04L51/20 ,  H04L51/28 ,  H04L51/38 ,  H04L67/025 ,  H04L67/12 ,  H04L67/18 ,  H04L67/20 ,  H04L67/42 ,  H04W4/02 ,  H04W4/04 ,  H04W4/12

摘要： In an automobile, communications to and from the automobile are in the form of messages. Such messages are referred to as “electronic car-mail” or “C-mail” messages as each message has a destination or origination address which includes an identifier, e.g., a vehicle identification number (VIN), identifying the automobile. The message may be delivered to the automobile from a remote server through a communications network, e.g., the Internet. One such message may contain a recall notice to the automobile. Another message may contain just-in-time map information for navigation, depending on the current location of the automobile. Yet another message may contain advertising information concerning selected entities, e.g., restaurants, gas stations, department stores, etc., also depending on the current location of the automobile. The messages transmitted from the automobile to the remote server may contain, e.g., GPS information identifying the location of the automobile, dynamic data furnished by sensors in the automobile for analysis, an odometer reading and a speedometer reading for records, etc.

摘要翻译： 在汽车中，与汽车的通信是以消息的形式。 这样的消息被称为“电子邮件”或“电子邮件”消息，因为每个消息具有目的地或发起地址，其包括识别汽车的标识符，例如车辆识别号码（VIN）。 消息可以通过通信网络（例如因特网）从远程服务器传送到汽车。 一个这样的消息可能包含汽车召回通知。 取决于汽车的当前位置，另外的消息可以包含用于导航的即时地图信息。 还有另一个消息可以包含关于所选实体的广告信息，例如餐馆，加油站，百货公司等，这些广告信息也取决于汽车的当前位置。 从汽车发送到远程服务器的消息可以包含例如识别汽车位置的GPS信息，汽车中用于分析的传感器提供的动态数据，里程表读数和用于记录的速度计读数等。

公开(公告)号：US06735427B2

公开(公告)日：2004-05-11

申请号：US10381727

申请日：2003-03-27

申请人： James H. Higbie

发明人： James H. Higbie

IPC分类号： H04B106

CPC分类号： H04K3/228 ,  H01Q3/2629 ,  H01Q3/2635 ,  H04B7/0845 ,  H04B7/0848 ,  H04B7/0851 ,  H04B7/086 ,  H04K2203/32

摘要： A system is provided which combines the advantages of Adaptive Antenna Arraying and Adaptive Locally-Optimum Detection, as well as Adaptive Filtering, signal processing techniques and achieves the capabilities of all these techniques. The present invention represents the first successful integrated system for performing signal processing techniques associated with an Adaptive Antenna Array (AAA) system and an Adaptive Locally-Optimum Detection (ALOD) system. The system automatically distributes interference signals among Adaptive Antenna Arraying and Adaptive Locally-Optimum Detection sub-systems according to which sub-system's algorithms can provide a more optimum suppression of the interference signals. The system permits an adaptive antenna array with a given number of antenna elements to effectively suppress a larger number of interferers than it otherwise could, and to adapt more quickly to a rapidly changing interference scenario. For an adaptive antenna array with a small number of antenna elements, e.g., two to four, the system provides added interference suppression capability than could be done by adding antenna elements to the adaptive antenna array. The system is primarily designed for incorporation within systems using Direct Sequence Spread Spectrum signals, such as Global Positioning System (GPS) signals. In a preferred embodiment the inventive system is incorporated within a conventional GPS receiver which tends to be vulnerable to jamming by interference signals.

摘要翻译： 提供了一种结合自适应天线阵列和自适应本地优化检测的优点以及自适应滤波，信号处理技术并实现所有这些技术的能力的系统。 本发明代表用于执行与自适应天线阵列（AAA）系统和自适应局部最佳检测（ALOD）系统相关联的信号处理技术的第一个成功的集成系统。 该系统根据哪个子系统的算法可以更好地抑制干扰信号，自动分配自适应天线阵列和自适应本地优化检测子系统之间的干扰信号。 该系统允许具有给定数量的天线元件的自适应天线阵列以有效地抑制更多数量的干扰源，否则可以更快地适应于快速变化的干扰场景。 对于具有少量天线元件（例如2至4个）的自适应天线阵列，该系统提供了比通过将天线元件添加到自适应天线阵列可以实现的附加的干扰抑制能力。 该系统主要设计用于使用直接序列扩频信号（如全球定位系统（GPS））信号在系统内并入。 在优选实施例中，本发明的系统被并入传统的GPS接收机中，其倾向于易受干扰信号的干扰。

公开(公告)号：US06735423B1

公开(公告)日：2004-05-11

申请号：US09313730

申请日：1999-05-18

申请人： Robert Uskali ,  William C. Hart, Jr. ,  Brian Iehl

发明人： Robert Uskali ,  William C. Hart, Jr. ,  Brian Iehl

IPC分类号： H04B106

CPC分类号： H04W52/52 ,  H03G3/3068 ,  H04W52/34

摘要： In a channelized system having a plurality of channels, an input spectrum having a plurality of signals is received by a receiver (10). A first attenuation value (V1) is applied to a first variable gain device (12) and a second attenuation value (V2) is applied to a second variable gain device (14), wherein the first variable gain device (12) and the second variable gain device (14) are within a common signal path. The receiver (10) is tuned to a desired channel and a first power level is measured within the desired channel. The receiver (10) is selectively tuned to at least one additional channel and a second power level within the at least one additional channel is measured, independent of the first power level. Based on measuring the power levels, a first modified attenuation value is applied to the first variable gain device (12) and a second modified attenuation value is applied to the second variable gain device (14).

摘要翻译： 在具有多个信道的信道化系统中，具有多个信号的输入频谱由接收机（10）接收。 第一衰减值（V1）被施加到第一可变增益装置（12），第二衰减值（V2）被施加到第二可变增益装置（14），其中第一可变增益装置（12）和第二可变增益装置 可变增益器件（14）在公共信号路径内。 接收机（10）被调谐到期望的信道，并且在所需信道内测量第一功率电平。 接收机（10）被选择性地调谐到至少一个附加信道，并且独立于第一功率电平来测量该至少一个附加信道内的第二功率电平。 基于测量功率电平，将第一修改衰减值应用于第一可变增益器件（12），并将第二修改衰减值应用于第二可变增益器件（14）。

公开(公告)号：US06731921B1

公开(公告)日：2004-05-04

申请号：US10049218

申请日：2002-06-14

申请人： Uwe Militz ,  Carsten Zeitz

发明人： Uwe Militz ,  Carsten Zeitz

IPC分类号： H04B106

CPC分类号： H04B7/0814 ,  H04B7/0825

摘要： A circuit for changing over between the frequency-modulated HF signals of at least two receiving antennas is described, having a control unit that changes over between the individual antennas as a function of the quality of the antenna output signal. A detector is provided which, when a signal that exceeds the defined reception level is no longer being furnished by any of the antennas, applies to the control unit a signal that effects the changeover to a specific antenna.

摘要翻译： 描述了用于在至少两个接收天线的频率调制HF信号之间切换的电路，具有作为天线输出信号的质量的函数的各个天线之间的转换的控制单元。 提供了一种检测器，当超过定义的接收电平的信号不再由任何天线提供时，向控制单元施加影响到特定天线的切换的信号。

公开(公告)号：US06725025B1

公开(公告)日：2004-04-20

申请号：US09665843

申请日：2000-09-20

申请人： Timothy M. Schmidl ,  Alan Gatherer ,  Xiaodong Wang ,  Rong Chen

发明人： Timothy M. Schmidl ,  Alan Gatherer ,  Xiaodong Wang ,  Rong Chen

IPC分类号： H04B106

CPC分类号： H04B1/71075 ,  H04L25/067

摘要： An improved interference cancellation technique is disclosed. Digital baseband circuitry (40) includes user and symbol detection circuitry (50) for performing a Gibbs sampler type of interference cancellation, either embodied in custom hardware (44) or in software. Random initial guesses for a signal sample (either a symbol or chip) are made for each user. Interference cancellation is performed on a user-by-user basis, using the then-current data decision values for the other, interfering users. A soft data decision is used to derive a probability distribution function for the actual data decision for the sample for the user. A randomly selected value is applied against the probability distribution function to generate the next data decision value for that user, and the process is repeated until convergence. Following convergence, a statistic is used to select a final data decision value for each user, from the set of intermediate data decision values stored in memory.

摘要翻译： 公开了一种改进的干扰消除技术。 数字基带电路（40）包括用于执行Gibbs采样器类型的干扰消除的用户和符号检测电路（50），或者体现在定制硬件（44）中或软件中。 为每个用户制作信号样本（符号或芯片）的随机初始猜测。 干扰消除是在逐个用户的基础上，使用当时的其他干扰用户的当前数据判定值进行的。 软数据决策用于导出用于用户的样本的实际数据决定的概率分布函数。 对概率分布函数应用随机选择的值以生成该用户的下一个数据判定值，并重复该过程直到收敛。 收敛后，根据存储在存储器中的一组中间数据判定值，使用统计量为每个用户选择最终数据判定值。

公开(公告)号：US06714773B1

公开(公告)日：2004-03-30

申请号：US09620148

申请日：2000-07-20

申请人： Takayasu Ishida

发明人： Takayasu Ishida

IPC分类号： H04B106

CPC分类号： H04B7/0805 ,  H04B1/406 ,  H04B1/48 ,  Y02D70/24 ,  Y02D70/40 ,  Y02D70/444

摘要： In a multiple portable phone, a first antenna is provided for a first communication system, a second antenna is provided in common to the first communication system and a second communication system. A switching circuit is controlled based on a control signal. A receiving circuit for the first communication system is connected to one of the first and second antennas via the switching circuit. A transmitting and receiving circuit provided for the second communication system is connected to the second antenna. A control unit generates the control signal to control the switching circuit to connect the impedance matching circuit to a path from the second antenna to the transmitting and receiving circuit when the transmitting and receiving circuit carries out a receiving operation using the second antenna while the receiving circuit carries out a receiving operation using the first antenna.

摘要翻译： 在多个便携式电话中，为第一通信系统提供第一天线，第二天线被提供给第一通信系统和第二通信系统。 基于控制信号控制开关电路。 用于第一通信系统的接收电路经由开关电路连接到第一和第二天线之一。 为第二通信系统提供的发送和接收电路连接到第二天线。 当发送和接收电路使用第二天线执行接收操作时，控制单元产生控制信号以控制开关电路将阻抗匹配电路连接到从第二天线到发送和接收电路的路径，而接收电路 使用第一天线执行接收操作。

公开(公告)号：US06704562B1

公开(公告)日：2004-03-09

申请号：US09593676

申请日：2000-06-14

申请人： Gerald Oberschmidt ,  Veselin Brankovic ,  Dragan Krupezevic ,  Masayoshi Abe ,  Thomas Dölle ,  Tino Konschak

发明人： Gerald Oberschmidt ,  Veselin Brankovic ,  Dragan Krupezevic ,  Masayoshi Abe ,  Thomas Dölle ,  Tino Konschak

IPC分类号： H04B106

CPC分类号： H03D3/00

摘要： A RF receiver for modulated RF signals based on a N-port junction (1) providing LO/RF isolation is proposed. N thereby is an integer larger than two, such that the N-port junction (1) can be preferably a three port, four port, five port and six port junction. The N-port junction (1) supplied with a first RF signal at a first input (2) and with a second RF signal originating from a local oscillator (2) at a second input (3). An isolation block (13) comprising an active circuitry (22) is comprised in the N-port junction for isolating the second input (3) from the first input (1). Thereby can be ensured that the LO signals are significantly attenuated at the RF port (2).

摘要翻译： 提出了一种基于提供LO / RF隔离的N端口结（1）的调制RF信号的RF接收器。 N因此是大于2的整数，使得N端口结（1）可以优选为三端口，四端口，五端口和六端口结。 N端口结（1）在第一输入（2）处提供有第一RF信号，并在第二输入（3）处提供源自本地振荡器（2）的第二RF信号。 包括有源电路（22）的隔离块（13）包括在N端口结中，用于将第二输入（3）与第一输入（1）隔离。 从而可以确保LO信号在RF端口（2）处被显着衰减。

公开(公告)号：US06690926B2

公开(公告)日：2004-02-10

申请号：US09800354

申请日：2001-03-06

申请人： Carmen Tawil ,  Saleem Tawil

发明人： Carmen Tawil ,  Saleem Tawil

IPC分类号： H04B106

CPC分类号： H04H40/90 ,  H04B7/18523 ,  H04N5/4401 ,  H04N7/20 ,  H04N21/4382 ,  H04N21/4622

摘要： A multiple data stream processing arrangement includes a receiver/signal processor (14) and a plurality of signal input paths (11, 12) which meet at a junction (36). A junction output from the junction (36) provides a single input to the receiver/signal processor (14). A switching arrangement (16) is associated with the plurality of signal input paths (11, 12). The switching arrangement (16) includes a switch (31, 32) connected in each signal input path (11, 12). Each switch (31, 32) responds to an enable signal to allow a data stream applied to the respective input path (11, 12) to pass on to the junction (36) and to the receiver/signal processor (14). Only one signal input path (11, 12) and respective switch (31, 32) is enabled at any given time.

摘要翻译： 多数据流处理装置包括接收器/信号处理器（14）和在结（36）处相交的多个信号输入路径（11,12）。 来自接点（36）的结输出为接收器/信号处理器（14）提供单个输入。 切换装置（16）与多个信号输入路径（11,12）相关联。 开关装置（16）包括连接在每个信号输入路径（11,12）中的开关（31,32）。 每个开关（31,32）响应使能信号以允许施加到相应输入路径（11,12）的数据流传递到结（36）和接收器/信号处理器（14）。 在任何给定的时间只有一个信号输入路径（11,12）和相应的开关（31,32）被使能。