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公开(公告)号：US08169369B2
公开(公告)日：2012-05-01
申请号：US12335156
申请日：2008-12-15
CPC分类号： G01S11/02
摘要： A frequency generation unit (FGU) in a communication device includes a voltage controlled oscillator (VCO), an adjustable filter having a capacitive element for wideband operation, a current source with variable gain, and chirp generation control circuitry (CGC) that is used to generate location signals. The FGU receives, from a reference device, at least one location signal control parameter that defines linear frequency slope characteristics for a location signal. The CGC configures, based on the at least one location signal control parameter, the gain and a polarity of the current source to generate a first current during a first time period for charging the capacitive element to generate a control signal that is coupled to the VCO to generate a first part of the location signal having the defined linear frequency slope characteristics, wherein the first part of the location signal is transmitted using a transceiver of the communication device.
摘要翻译： 通信装置中的频率产生单元（FGU）包括压控振荡器（VCO），具有用于宽带操作的电容元件的可调整滤波器，具有可变增益的电流源和用于发送控制的线性调频电路（CGC） 生成位置信号。 FGU从参考设备接收至少一个位置信号控制参数，其定义位置信号的线性频率斜率特性。 所述CGC基于所述至少一个位置信号控制参数，配置所述电流源的增益和极性，以在第一时间段期间产生第一电流，以对所述电容元件充电以产生耦合到所述VCO的控制信号 以产生具有所定义的线性频率斜率特性的位置信号的第一部分，其中使用通信设备的收发器发送位置信号的第一部分。
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2.发明授权公开(公告)号：US08131215B2
公开(公告)日：2012-03-06
申请号：US12335031
申请日：2008-12-15
IPC分类号： H04B7/00
CPC分类号： H04W64/00 , G01S13/767
摘要： A reference device determines its distance from a communication device by first using a training process to determine a calibrated time delay for the communication device when the communication device is at a known distance from the reference device. The calibrated time delay is a steady state internal processing delay for the communication device. Subsequently, when the reference device is at an unknown distance from the communication device, the reference device determines the unknown distance using the previously determined calibrated time delay along with a measured signal travel time at the unknown distance.
摘要翻译： 参考设备通过首先使用训练过程来确定其与通信设备的距离，以便当通信设备距离参考设备已知距离时，确定通信设备的校准时间延迟。 校准的时间延迟是通信设备的稳态内部处理延迟。 随后，当参考设备距离通信设备距离未知距离时，参考设备使用先前确定的校准时间延迟以及在未知距离处的测量信号行进时间来确定未知距离。
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公开(公告)号：US08063823B2
公开(公告)日：2011-11-22
申请号：US12335091
申请日：2008-12-15
IPC分类号： G01S1/08
CPC分类号： G01S13/825
摘要： A communication device uses its FGU to generate a location signal that can be used by a reference device to calibrate the communication device and to determine the distance of the communication device from the reference device. The communication device: receives, from a reference device, at least one location signal control parameter that defines pulse shape characteristics for a location signal; configures its FGU based on the at least one location signal control parameter; generates a linear first part of a phase-incoherent location signal having the defined pulse shape characteristics by progressively sweeping an output of the FGU over a range of frequencies from a first frequency to a second frequency within a first time period; and transmits at least one iteration of the first part of the location signal.
摘要翻译： 通信设备使用其FGU来产生可由参考设备使用的位置信号来校准通信设备并且确定通信设备与参考设备的距离。 通信设备：从参考设备接收定义用于位置信号的脉冲形状特性的至少一个位置信号控制参数; 基于所述至少一个位置信号控制参数来配置其FGU; 通过在第一时间段内从第一频率到第二频率的频率范围逐渐扫描FGU的输出来产生具有所定义的脉冲形状特性的相位非相干位置信号的线性第一部分; 并且发送位置信号的第一部分的至少一次迭代。
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公开(公告)号：US08565145B2
公开(公告)日：2013-10-22
申请号：US12968443
申请日：2010-12-15
申请人： Shakeeb Z. Khan , Joseph J. Medvid, III , Charles R. Ruelke , Richard S. Young , Branko L. Avanic , Lorenzo Cruger , Tan V. Dinh , Mahes M. Ekanayake , Armando J. Gonzalez
发明人： Shakeeb Z. Khan , Joseph J. Medvid, III , Charles R. Ruelke , Richard S. Young , Branko L. Avanic , Lorenzo Cruger , Tan V. Dinh , Mahes M. Ekanayake , Armando J. Gonzalez
IPC分类号： H04B7/14
摘要： A method for transmitting a communication generated by an originating device to a target device using a repeating device is provided. In the method the communication is transmitted from the originating device and received at the repeating device. A repeater request sequence is transmitted from the originating device and retransmitted from the first repeating device to the target device before the repeater request sequence is received at the first repeating device.
摘要翻译： 提供了一种用于使用重复装置将由始发设备生成的通信发送到目标设备的方法。 在该方法中，通信从始发设备发送并在重复设备处接收。 在第一重复设备接收到中继器请求序列之前，从始发设备发送中继器请求序列，并从第一中继设备重传到目标设备。
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公开(公告)号：US08295825B2
公开(公告)日：2012-10-23
申请号：US12957190
申请日：2010-11-30
申请人： Ellis A. Pinder , Branko L. Avanic , Lorenzo J. Cruger , Tan V. Dinh , Mahes M. Ekanayake , Armando J. Gonzalez , Joseph P. Heck , Shakeeb Z. Khan , Joseph J. Medvid, III , Wayne M. Phang , Charles R. Ruelke , Dang N. Vu , Richard S. Young
发明人： Ellis A. Pinder , Branko L. Avanic , Lorenzo J. Cruger , Tan V. Dinh , Mahes M. Ekanayake , Armando J. Gonzalez , Joseph P. Heck , Shakeeb Z. Khan , Joseph J. Medvid, III , Wayne M. Phang , Charles R. Ruelke , Dang N. Vu , Richard S. Young
IPC分类号： H04W4/00
CPC分类号： H04W76/40
摘要： Methods of enabling late entry into an on-going spread spectrum call are described. A late join frame replaces, and has the same size as, a traffic frame. A late join slot in the late join frame contains sufficient information in preamble and sync subframes to permit a target to join the call. The traffic slots in the late join frame replicate data such that call quality of the call is substantially unaffected if one of the remaining traffic frames is not received. The preamble and sync subframes frequencies may be the same as, or different from, preamble and sync frames frequencies during a call establishment phase of the call. If different, the preamble and sync subframes frequencies are selected from one or more frequencies. Use of the preamble and sync subframes frequencies is compensated for when selecting the traffic slot frequencies to obtain uniform utilization of the spectrum.
摘要翻译： 描述了能够延迟进入正在进行的扩频呼叫的方法。 后期连接框架替换并具有与交通帧相同的大小。 晚连接帧中的延迟加入时隙包含前导码和同步子帧中足够的信息，以允许目标方加入呼叫。 后期加入帧中的业务时隙复制数据，使得如果未接收到剩余业务帧之一，则呼叫的呼叫质量基本上不受影响。 前导码和同步子帧频率可以在呼叫的呼叫建立阶段期间与前同步码和同步帧频率相同或不同。 如果不同，则从一个或多个频率中选择前同步码和同步子帧频率。 当选择业务时隙频率以获得频谱的均匀利用时，对前导码和同步子帧频率的使用进行补偿。
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公开(公告)号：US07202815B2
公开(公告)日：2007-04-10
申请号：US10916821
申请日：2004-08-12
IPC分类号： G01S5/02
摘要： A location determination device (104) is worn on a user's head to facilitate searching and tracking for another individual carrying a portable radio (102) as well as locating exit routes. At least two antennas (108), a monopulse receiver (110) and a display are integrated into the location determination device (104). Location determination device (104) scans for an incoming signal (106) from the portable device (102) and coverts the signal into angular location data. The location data and egress information are displayed to the peripheral vision of the user of the location determination device (104).
摘要翻译： 位置确定装置（104）佩戴在用户的头部上，以便于携带便携式无线电（102）的另一个人以及定位出口路线的搜索和跟踪。 至少两个天线（108），单脉冲接收器（110）和显示器被集成到位置确定装置（104）中。 位置确定设备（104）从便携式设备（102）扫描输入信号（106），并将信号覆盖成角位置数据。 位置数据和出口信息被显示给位置确定装置（104）的用户的周边视觉。
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7.发明授权System and method for integrating environmental sensors and asynchronous ubication repeaters forming an n-point spatially random virtual lattice network 有权用于集成环境传感器和形成n点空间随机虚拟网格网络的异步通信中继器的系统和方法公开(公告)号：US07054747B2
公开(公告)日：2006-05-30
申请号：US10924044
申请日：2004-08-23
CPC分类号： A62B99/00
摘要： A system for integrating environmental sensors and asynchronous ubication repeaters forming an n-point spatially random virtual lattice network (100) includes a ubication repeater (101) for communicating both positional and environmental information to a two-way radio transceiver (102) used by police or firefighters. The ubication repeater (101) initially determines its position upon actuation from the two-way radio transceiver (102) where environmental information can be transmitted to the firefighter's two-way radio transceiver (102) or to a central location (104). The central location (102) can provide a composite overview of an environmental situation during an emergency.
摘要翻译： 用于集成形成n点空间随机虚拟网格网络（100）的环境传感器和异步通信中继器的系统包括用于将位置和环境信息传送到警察使用的双向无线电收发机（102）的通信中继器（101） 或消防员。 应变中继器（101）最初在从双向无线电收发机（102）启动时确定其位置，其中环境信息可被发送到消防员的双向无线电收发机（102）或中央位置（104）。 中央位置（102）可以在紧急情况下提供环境状况的综合概述。
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公开(公告)号：US08259858B2
公开(公告)日：2012-09-04
申请号：US12512185
申请日：2009-07-30
IPC分类号： H04L25/06
CPC分类号： H04L25/06 , H03G3/3068 , H04L27/0014 , H04L27/38 , H04L27/3809 , H04L27/3863
摘要： A method of detecting an on-channel signal and synchronizing signal detection with correcting for DC offset errors in a direct conversion receiver is presented. A received signal is digitized, and a state machine operates to detect the presence of an on-channel signal. If the signal is not detected, a mixed mode training sequence is initiated in which the DC offset errors in both an analog and digital received signal path are corrected. While training, processing of the digitized samples by a digital signal processor and a host controller is suspended (while they are put into battery save mode) and the gain provided to subsequently received signals is minimized. The DC offset correction circuitry is bypassed and put into battery save mode at predetermined periods when DC offset correction is not performed.
摘要翻译： 提出了一种在直接转换接收机中检测通道信号和同步信号检测与校正直流偏移误差的方法。 接收到的信号被数字化，并且状态机操作以检测是否存在通道信号。 如果未检测到信号，则开始混合模式训练序列，其中校正模拟和数字接收信号路径中的DC偏移误差。 在训练时，由数字信号处理器和主机控制器处理数字化采样被暂停（当它们进入电池保存模式时），并且提供给随后接收到的信号的增益被最小化。 直流偏移校正电路被旁路，并且在不执行直流偏移校正的预定周期中进入省电模式。
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9.发明授权Receiver with automatic gain control that operates with multiple protocols and method thereof 有权具有自动增益控制的接收机，其具有多种协议及其方法公开(公告)号：US07227916B2
公开(公告)日：2007-06-05
申请号：US10649427
申请日：2003-08-26
IPC分类号： H04L27/08
CPC分类号： H03G3/3078 , H03G3/001 , H03G3/3052
摘要： An automatic gain control (AGC) method and circuit (10) within a receiver uses a digital state machine (26) to implement the AGC function. independent from interaction with a host processor (36) and for multiple modulation protocols without duplicating circuitry. Modulation protocol and parameters for any of various gain responses are stored in a register (29). Multiple states, each corresponding to a predetermined range of RF input signal strength, are stored in the register. Each state contains parameters that determine a gain control signal for controlling a variable gain amplifier (16). The states are independent and may be selectively disabled to create asymmetric responses. Within any state, an adaptable number of iterations may be set to implement a different update rate or step size after a predetermined number of closed loop gain change iterations has not resulted in a transition to a state that represents a desired output gain.
摘要翻译： 接收机内的自动增益控制（AGC）方法和电路（10）使用数字状态机（26）实现AGC功能。 独立于与主处理器（36）的交互和不具有复制电路的多调制协议。 任何各种增益响应的调制协议和参数都存储在寄存器（29）中。 每个对应于RF输入信号强度的预定范围的多个状态被存储在寄存器中。 每个状态包含确定用于控制可变增益放大器（16）的增益控制信号的参数。 状态是独立的，并且可以被选择性地禁用以产生不对称响应。 在任何状态下，在预定数量的闭环增益变化迭代尚未导致转换到表示期望的输出增益的状态之后，可设置可适应数量的迭代以实现不同的更新速率或步长。
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公开(公告)号：US08971456B2
公开(公告)日：2015-03-03
申请号：US13329691
申请日：2011-12-19
IPC分类号： H04L27/06
CPC分类号： H04B1/0007 , H04B1/0071
摘要： A receiver for a wireless communication device provides a dual path receiver receiving first and second protocol-agnostic, uncorrelated receive signals simultaneously. The dual path receiver generating first and second offset IF signals from the simultaneously received first and second protocol-agnostic, uncorrelated receive signals. The receiver utilizes at least one converter for converting the first and second offset IF signals into at least one serial synchronous interface (SSI) signal representing the spectrum at IF. At least one processor receives the at least one SSI signal and applies parallel processing paths to demodulate the at least one SSI signal into separate baseband signals. The processor provides interference detection of, and level control for, the first and second offset IF signals.
摘要翻译： 用于无线通信设备的接收机提供双路径接收机同时接收第一和第二协议无关的，不相关的接收信号。 双路径接收机从同时接收的第一和第二协议无关的，不相关的接收信号产生第一和第二偏移IF信号。 接收机利用至少一个转换器将第一和第二偏移IF信号转换为表示IF处的频谱的至少一个串行同步接口（SSI）信号。 至少一个处理器接收所述至少一个SSI信号并且应用并行处理路径以将所述至少一个SSI信号解调为单独的基带信号。 处理器为第一和第二偏移IF信号提供干扰检测和电平控制。
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