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    • 4. 发明申请
    • Communication device
    • 通讯设备
    • US20050105595A1
    • 2005-05-19
    • US10715222
    • 2003-11-17
    • Frederick MartinEdgar CallawayPaul GordayDavid Taubenheim
    • Frederick MartinEdgar CallawayPaul GordayDavid Taubenheim
    • H04B1/707H04L27/22H04B1/713H04B7/216
    • H04L27/22H04B1/707H04B1/709H04B2201/70707
    • A direct sequence spread spectrum (DSSS) receiver (100) consistent with certain embodiments has a frequency generator (112) that generates a local oscillator signal without use of a piezoelectric crystal. A frequency converter (108) receives the local oscillator signal and mixes the local oscillator signal with a received DSSS signal to produce a down-converted signal. The received DSSS signal is encoded using a first set of DSSS code. A differential chip detector (116) receives the down-converted signal and converts the down-converted signal to a differentially detected signal. A correlator (120) receives the differentially detected signal and correlates the detected signal with a set of DSSS codes that are time-shifted from the first set of DSSS codes. This abstract is not to be considered limiting, since other embodiments may deviate from the features described in this abstract.
    • 与某些实施例一致的直接序列扩频(DSSS)接收机(100)具有在不使用压电晶体的情况下产生本地振荡器信号的频率发生器(112)。 变频器(108)接收本地振荡器信号,并将本地振荡器信号与接收到的DSSS信号进行混频,产生下变频信号。 接收的DSSS信号使用第一组DSSS码进行编码。 差分芯片检测器(116)接收下变频信号并将下变频信号转换成差分检测信​​号。 相关器(120)接收差分检测信​​号,并将检测到的信号与从第一组DSSS码进行时移的一组DSSS码进行相关。 该摘要不被认为是限制性的,因为其他实施例可能偏离本摘要中描述的特征。
    • 6. 发明申请
    • System and method for distributing data in dedicated short-range communication system
    • 在专用短距离通信系统中分配数据的系统和方法
    • US20070217372A1
    • 2007-09-20
    • US11375234
    • 2006-03-14
    • Paul GordayThomas D'Amico
    • Paul GordayThomas D'Amico
    • H04Q7/24
    • H04L45/00H04L67/12H04W40/20
    • A data distribution system includes a controller communicatively coupled to an origin. A plurality of mobile units capable of storing, receiving, and communicating data pass within communication range of the origin. The controller has data configured for a destination, but the destination is communicatively unlinked from the controller. To communicate the data to the destination, the controller selects a mobile unit passing in range of the origin and communicates the data. The mobile unit has a route at least approximately allied with a geographical location of the destination. The mobile unit stores the data and continues traveling. The mobile unit communicates the data to the destination if in the communication range of the destination unit. Alternatively, the mobile unit communicates the data to another mobile unit if the other mobile unit has a route at least approximately more allied with the geographical location of the destination.
    • 数据分配系统包括通信地耦合到原点的控制器。 能够存储,接收和传送数据的多个移动单元在原点的通信范围内通过。 控制器具有为目的地配置的数据,但目的地与控制器通信地取消链接。 为了将数据传送到目的地,控制器选择通过原点范围的移动单元并传送数据。 移动单元具有至少近似地与目的地的地理位置相关联的路线。 移动单元存储数据并继续行进。 如果在目的地单元的通信范围内,移动单元将数据传送到目的地。 或者,如果其他移动单元具有与目的地的地理位置至少近似更多的路由,则移动单元将数据传送到另一个移动单元。
    • 7. 发明申请
    • Sync bursts frequency offset compensation
    • 同步突发频偏补偿
    • US20060072586A1
    • 2006-04-06
    • US10959359
    • 2004-10-06
    • Edgar CallawayPaul Gorday
    • Edgar CallawayPaul Gorday
    • H04L12/28
    • H04L27/0014H04L2027/0026H04W24/00H04W56/0035
    • A method (500) and system for compensation of frequency offset between a first transceiver (102) and a second transceiver (104) in wireless communication are disclosed. The compensation of the frequency offset between two or more transceivers (102, 104) is achieved by transmitting a set of frequency synchronization bursts. These bursts contain information about the frequency offset. The frequency synchronization bursts are transmitted by the first transceiver at a range of frequencies above and below its carrier frequency (502). When system conditions permit, a subset of the set of frequency synchronization bursts may be transmitted instead of transmitting the full set of frequency synchronization bursts.
    • 公开了一种用于在无线通信中补偿第一收发器(102)和第二收发器(104)之间的频率偏移的方法(500)和系统。 通过发送一组频率同步脉冲串来实现两个或多个收发器(102,104)之间的频率偏移的补偿。 这些突发包含有关频率偏移的信息。 频率同步突发由第一收发器在其载波频率(502)之上和之下的频率范围内传输。 当系统条件允许时,可以发送该组频率同步脉冲串的子集,而不是传送全套频率同步脉冲串。