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36 条记录 (耗时 0.032 秒)

    Method, dual rectangular patch antenna system and radio for providing isolation and diversity
    32.
    发明授权
    Method, dual rectangular patch antenna system and radio for providing isolation and diversity 失效
    方法，双矩形贴片天线系统和无线电提供隔离和多样性

    公开(公告)号：US5486836A

    公开(公告)日：1996-01-23

    申请号：US389540

    申请日：1995-02-16

    申请人： Stephen L. Kuffner ,  Scott N. Carney ,  Eric L. Krenz

    发明人： Stephen L. Kuffner ,  Scott N. Carney ,  Eric L. Krenz

    IPC分类号： H01Q1/24 ,  H01Q1/52 ,  H01Q3/24 ,  H01Q1/38

    CPC分类号： H01Q1/243 ,  H01Q1/525 ,  H01Q3/24

    摘要： The present invention provides a method, dual rectangular patch antenna system, and radio for providing isolation and diversity while eliminating the need for a diplexer or a second transmit/receive switch. The dual rectangular patch antenna system comprises a first rectangular patch antenna (202), a second rectangular patch antenna (204), and a switch (206). Receive path diversity is provided by switching between the first rectangular patch antenna (202) and the second rectangular patch antenna (204).

    摘要翻译： 本发明提供一种方法，双矩形贴片天线系统和用于提供隔离和分集的无线电装置，同时消除对双工器或第二发射/接收开关的需要。 双矩形贴片天线系统包括第一矩形贴片天线（202），第二矩形贴片天线（204）和开关（206）。 通过在第一矩形贴片天线（202）和第二矩形贴片天线（204）之间切换来提供接收路径分集。

    Method and apparatus for determining appropriate channels for communication
    33.
    发明授权
    Method and apparatus for determining appropriate channels for communication 有权
    用于确定通信的适当信道的方法和装置

    公开(公告)号：US07742764B2

    公开(公告)日：2010-06-22

    申请号：US11690323

    申请日：2007-03-23

    申请人： Steven F. Gillig ,  Stephen L. Kuffner

    发明人： Steven F. Gillig ,  Stephen L. Kuffner

    IPC分类号： H04W4/00 ,  H04W72/00

    CPC分类号： H04W16/14 ,  H04W72/02

    摘要： During operation of a secondary communication system 100, a device will perform spectrum sensing of certain channels (either by itself or as part of a group of nodes 104). When activity is found on a channel from a primary user, other devices will be notified that the channel is not available for use. The device may then modify its spectrum sensing to assist another device (or group of devices) that have not yet found activity on a different set of channels. By assigning additional channels to devices with extra capacity, the overall spectrum-sensing efficiency and performance of the communication system 100 is raised.

    摘要翻译： 在二次通信系统100的操作期间，设备将执行某些信道的频谱感测（由本身或作为一组节点104的一部分）。 当在主用户的频道上发现活动时，其他设备将被通知该频道不可用。 然后，设备可以修改其频谱感测以辅助尚未在不同的信道集合上发现活动的另一设备（或设备组）。 通过向具有额外容量的设备分配附加信道，提高了通信系统100的总体频谱感测效率和性能。

    METHOD AND APPARATUS FOR OPTIMIZING SPECTRUM UTILIZATION BY A COGNITIVE RADIO NETWORK
    35.
    发明申请
    METHOD AND APPARATUS FOR OPTIMIZING SPECTRUM UTILIZATION BY A COGNITIVE RADIO NETWORK 有权
    通过认知无线电网络优化频谱利用的方法和装置

    公开(公告)号：US20100081449A1

    公开(公告)日：2010-04-01

    申请号：US12241821

    申请日：2008-09-30

    申请人： Apoorv Chaudhri ,  David P. Gurney ,  Stephen L. Kuffner ,  Yadunandana N. Rao ,  Matthew E. Simms

    发明人： Apoorv Chaudhri ,  David P. Gurney ,  Stephen L. Kuffner ,  Yadunandana N. Rao ,  Matthew E. Simms

    IPC分类号： H04W72/00 ,  H04W72/08 ,  H04W72/06

    CPC分类号： H04W72/082 ,  H04W4/02 ,  H04W8/205 ,  H04W16/14 ,  H04W48/20 ,  H04W72/02

    摘要： A technique for a secondary communication system to utilize spectrum designated to another (or primary) communication system is provided. By ranking a plurality of secondary base stations based on base station transmit power, calculated required transmit power and path loss, a set of criteria is developed for selecting a highest ranked secondary base station for operation within a primary's spectrum. The ranking may be adapted based on mobility of the secondary's subscriber; and as such the secondary system communicates within the primary's spectrum using the adaptively ranked base stations. Channel selection may also be ranked. The technique and apparatus allows a cognitive radio (CR) network to operate within an incumbent network's spectrum.

    摘要翻译： 提供了一种次要通信系统利用指定给另一（通信）通信系统的频谱的技术。 通过基于基站发射功率，计算的所需发射功率和路径损耗对多个次基站进行排序，开发了用于选择最高等级次级基站以在主频谱内操作的一组标准。 可以基于辅助用户的移动性来调整排名; 并且因此次级系统使用自适应排名的基站在主频谱内进行通信。 频道选择也可能被排名。 该技术和装置允许认知无线电（CR）网络在现有网络的频谱范围内运行。

    Method of scrambling and descrambling data in a communication system
    36.
    发明授权
    Method of scrambling and descrambling data in a communication system 有权
    在通信系统中对数据进行加扰和解扰的方法

    公开(公告)号：US07099469B2

    公开(公告)日：2006-08-29

    申请号：US09978890

    申请日：2001-10-17

    申请人： Douglas A. Kuhlman ,  Thomas S. Messerges ,  Timothy James Collins ,  David P. Gurney ,  Stephen L. Kuffner

    发明人： Douglas A. Kuhlman ,  Thomas S. Messerges ,  Timothy James Collins ,  David P. Gurney ,  Stephen L. Kuffner

    IPC分类号： H04L9/00

    CPC分类号： H04L1/0001 ,  H04L9/0618 ,  H04L2209/08 ,  H04L2209/12

    摘要： A scrambling method (510) divides a set of data (200) into a first portion and a second portion. A first scrambling method is performed on the first portion of the set of data to create a scrambled first portion of the data. The second portion of the set of data is modified with the scrambled first portion of the set of data to create a modified second portion of the set of data. A second scrambling method is performed on the modified second portion of the set of data to create a scrambled second portion of the set of data. The scrambled first portion of the set of data is modified with the scrambled second portion of the set of data to create a scrambled set of data (220). A descrambling method (520) reverses the scrambling method (510) to create a descrambed set of data (200).

    摘要翻译： 加扰方法（510）将一组数据（200）划分为第一部分和第二部分。 对该组数据的第一部分执行第一加扰方法以创建数据的加扰的第一部分。 该组数据的第二部分用该组数据的加扰的第一部分进行修改以创建该组数据的经修改的第二部分。 对该组数据的修改的第二部分执行第二加扰方法，以创建该组数据的加扰的第二部分。 数据集合的加扰的第一部分用数据集合的加扰的第二部分进行修改以产生加扰的数据集（220）。 解扰方法（520）反转加扰方法（510）以创建解组的数据集（200）。