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    Method and apparatus in a wireless messaging system for dynamic creation of directed simulcast zones
    1.
    发明授权
    Method and apparatus in a wireless messaging system for dynamic creation of directed simulcast zones 失效
    用于动态创建定向联播区域的无线消息系统中的方法和装置

    公开(公告)号：US6052064A

    公开(公告)日：2000-04-18

    申请号：US960814

    申请日：1997-10-30

    申请人： Brian Joseph Budnik ,  Donald Bryan Siperko

    发明人： Brian Joseph Budnik ,  Donald Bryan Siperko

    IPC分类号： H04B7/005 ,  H04B17/00 ,  H04W52/04 ,  H04W84/02 ,  H04W88/18 ,  G08B5/22

    CPC分类号： H04W84/022 ,  H04B17/27 ,  H04W52/04 ,  H04W88/185

    摘要： Base transmitters (116) of a wireless messaging system are pre-programmed (802) with location identifiers (216) for identifying the positions at which the base transmitters are located. In response to an inbound message from a portable subscriber unit (122), a fixed portion (102) of the wireless messaging system makes an estimate (808) of a location at which the portable subscriber unit is positioned. A controller (112) sends (812) an outbound message (614) and the estimate to the base transmitters, and the base transmitters calculate (812) distances between themselves and the portable subscriber unit, based upon the location identifiers and the estimate. In addition, the base transmitters independently make a decision (818) whether to transmit the outbound message, based upon a comparison of a predetermined rule with the distance of the base transmitter from the portable subscriber unit.

    摘要翻译： 无线消息系统的基站发射机（116）用位置标识符（216）进行预编程（802），用于识别基站发射机所在的位置。 响应于来自便携式用户单元（122）的入站消息，无线消息系统的固定部分（102）对便携式用户单元所在的位置进行估计（808）。 控制器（112）将出站消息（614）和估计发送（812）到基站发射机，并且基站发射机基于位置标识符和估计来计算（812）它们与便携式用户单元之间的距离。 此外，基站发射机基于预定规则与基站发射机与便携式用户单元的距离的比较，独立地做出是否发送出站消息的决定（818）。

    Method and apparatus in a messaging system for limiting an interval of carrier cancellation
    3.
    发明授权
    Method and apparatus in a messaging system for limiting an interval of carrier cancellation 失效
    用于限制载波消除间隔的消息系统中的方法和装置

    公开(公告)号：US06044276A

    公开(公告)日：2000-03-28

    申请号：US959409

    申请日：1997-10-28

    申请人： Steven Jeffrey Goldberg ,  Brian Joseph Budnik ,  Thomas Aloysius Sexton ,  Stephen Rocco Carsello

    发明人： Steven Jeffrey Goldberg ,  Brian Joseph Budnik ,  Thomas Aloysius Sexton ,  Stephen Rocco Carsello

    IPC分类号： H04B1/707 ,  H04B7/02 ,  H04B7/005

    CPC分类号： H04B7/022 ,  H04B2201/709709

    摘要： In a messaging system having a plurality of simulcasting base transmitters (104), a plurality of pseudorandom sequence generators (216) are provided (402) for the plurality of base transmitters. The plurality of pseudorandom sequence generators are arranged (403) to ensure that they generate a plurality of pseudorandom sequences having sub-sequences that are different from one another during concurrent transmissions by the plurality of base transmitters. A cancellation-affecting parameter of the plurality of base transmitters is adjusted (404, 406, 408) in accordance with the plurality of pseudorandom sequences during the simulcast transmission from the plurality of base transmitters to limit intervals of carrier cancellation.

    摘要翻译： 在具有多个同时播送基站发射机（104）的消息系统中，为多个基站发射机提供多个伪随机序列发生器（402）（402）。 布置多个伪随机序列发生器（403）以确保它们在多个基站发射机的并发传输期间产生具有彼此不同的子序列的多个伪随机序列。 在从多个基站发射机的联播传输期间，根据多个伪随机序列来调整多个基站发射机的消除影响参数，以限制载波消除的间隔。

    Method of compensating for distortion in an amplifier
    4.
    发明授权
    Method of compensating for distortion in an amplifier 失效
    补偿放大器失真的方法

    公开(公告)号：US5745006A

    公开(公告)日：1998-04-28

    申请号：US747497

    申请日：1996-11-12

    申请人： Brian Joseph Budnik ,  George Francis Opas

    发明人： Brian Joseph Budnik ,  George Francis Opas

    IPC分类号： H03F1/32

    CPC分类号： H03F1/3247

    摘要： A method of providing compensation for distortion imparted to an input signal, principally by an amplifier (18), compares a delayed version of the input signal (34) to the amplifier's output signal. The result of the comparison is an error signal that is fed back to minimize distortion. This feedback technique is applied to a transmitter (10) in combination with predistortion that is selected to compensate for at least some of the distortion provided by the transmitter's output amplifier (18). The remainder of the compensation is provided by the error signal which can be generated by a relatively low gain analog feedback loop.

    摘要翻译： 主要由放大器（18）给予输入信号的失真提供补偿的方法将输入信号（34）的延迟版本与放大器的输出信号进行比较。 比较的结果是反馈的误差信号以使失真最小化。 该反馈技术结合用于补偿由发射机的输出放大器（18）提供的至少一些失真的预失真来应用于发射机（10）。 补偿的其余部分由可由较低增益模拟反馈回路产生的误差信号提供。