Wireless Star Networks with Dual Adaptive Central Nodes
    51.
    发明申请
    Wireless Star Networks with Dual Adaptive Central Nodes 有权
    具有双自适应中央节点的无线星形网络

    公开(公告)号:US20110164556A1

    公开(公告)日:2011-07-07

    申请号:US12651474

    申请日:2010-01-03

    IPC分类号: H04W28/16 H04J1/02

    摘要: A wireless network with a star topology has a first and second central node. The first central node starts up first and initiates the network. The second central node starts up second and synchronizes to the first central node, and wherein one node is in active mode and the other node is in standby mode, and a set of leaf nodes configured to communicate only with the active node.

    摘要翻译: 具有星形拓扑的无线网络具有第一和第二中心节点。 第一个中心节点首先启动并启动网络。 第二中央节点启动第二并与第一中央节点同步,并且其中一个节点处于活动模式,而另一个节点处于待机模式,并且一组叶节点被配置为仅与主动节点进行通信。

    Reducing Peak-to-Average-Power-Ratio in OFDM/OFDMA Signals by Deliberate Error Injection
    52.
    发明申请
    Reducing Peak-to-Average-Power-Ratio in OFDM/OFDMA Signals by Deliberate Error Injection 审中-公开
    通过故意错误注入降低OFDM / OFDMA信号中的峰均功率比

    公开(公告)号:US20090080556A1

    公开(公告)日:2009-03-26

    申请号:US11860710

    申请日:2007-09-25

    IPC分类号: H04L5/12 H04L1/00

    CPC分类号: H04L27/2617 H04L1/0042

    摘要: A method and system reduces a peak to average power ratio of a transmitted OFDM signal. An input signal is encoded using a forward error correcting code to produce a codeword corresponding to the input signal. A peak power corresponding to the codeword is measured. The peak power is compared with a predetermined threshold, and a set of selected bits in the codeword are manipulated if the peak power is greater than the predetermined threshold to deliberately produce an erroneous codeword in which the peak power is less than the predetermined threshold, which is transmitted.

    摘要翻译: 一种方法和系统降低了发射的OFDM信号的峰均功率比。 使用前向纠错码来编码输入信号以产生对应于输入信号的码字。 测量与码字对应的峰值功率。 将峰值功率与预定阈值进行比较,并且如果峰值功率大于预定阈值,则操作码字中的一组选择的比特以故意产生其中峰值功率小于预定阈值的错误码字,其中 被传送。

    High electron mobility transistors with multiple channels
    53.
    发明授权
    High electron mobility transistors with multiple channels 有权
    具有多个通道的高电子迁移率晶体管

    公开(公告)号:US08624667B2

    公开(公告)日:2014-01-07

    申请号:US13567749

    申请日:2012-08-06

    IPC分类号: H01L25/00

    摘要: A device includes a source for transmitting an electronic charge through a conduction path; a drain for receiving the electronic charge; a stack for providing at least part of the conduction path; and a gate operatively connected to the stack for controlling a conduction of the electronic charge. The stack includes an insulator layer, an N-polar layer and a barrier layer selected such that, during an operation of the device, the conduction path formed in the N-polar layer includes a two-dimensional electron gas (2DEG) channel and an inversion carrier channel.

    摘要翻译: 一种装置包括用于通过导电路径发送电荷的源; 用于接收电子费用的排水口; 用于提供所述传导路径的至少一部分的堆叠; 以及可操作地连接到所述堆叠的门,用于控制所述电子电荷的导通。 该堆叠包括绝缘体层,N极层和阻挡层,其被选择为使得在器件的操作期间,形成在N极层中的导电路径包括二维电子气(2DEG)通道和 反向载波信道。

    Method for generating private keys in wireless networks
    54.
    发明授权
    Method for generating private keys in wireless networks 有权
    在无线网络中生成私钥的方法

    公开(公告)号:US08483387B2

    公开(公告)日:2013-07-09

    申请号:US12962449

    申请日:2010-12-07

    IPC分类号: H04L29/06

    摘要: The first and second nodes in a wireless network estimate first and second channel response. The first node quantizes the first channel response to produce a first bit sequence, and a feed-forward message, which is transmit as a feed-forward message to the second node. The second node quantizes the second channel response using the feed-forward message to produce and an estimate of the first bit sequence, a second bit sequence and a feed-back message, which is transmitted to the first node. Then, the first and second nodes delete bits in the respective bit sequences using the feed-back and feed-forward message to generate first and second private keys with low bit mismatch rate.

    摘要翻译: 无线网络中的第一和第二节点估计第一和第二信道响应。 第一节点量化第一信道响应以产生第一比特序列,以及作为前馈消息作为第二节点发送的前馈消息。 第二节点使用前馈消息量化第二信道响应,以产生第一比特序列,第二比特序列和反馈消息的估计,其被发送到第一节点。 然后,第一和第二节点使用反馈和前馈消息删除各个比特序列中的比特,以产生具有低比特失配率的第一和第二私钥。

    Wireless star networks with dual adaptive central nodes
    55.
    发明授权
    Wireless star networks with dual adaptive central nodes 有权
    具有双自适应中心节点的无线星形网络

    公开(公告)号:US08315205B2

    公开(公告)日:2012-11-20

    申请号:US12651474

    申请日:2010-01-03

    IPC分类号: H04W28/16 H04J1/16

    摘要: A wireless network with a star topology has a first and second central node. The first central node starts up first and initiates the network. The second central node starts up second and synchronizes to the first central node, and wherein one node is in active mode and the other node is in standby mode, and a set of leaf nodes configured to communicate only with the active node.

    摘要翻译: 具有星形拓扑的无线网络具有第一和第二中心节点。 第一个中心节点首先启动并启动网络。 第二中央节点启动第二并与第一中央节点同步,并且其中一个节点处于活动模式,而另一个节点处于待机模式,并且一组叶节点被配置为仅与主动节点进行通信。

    Secure Wireless Communication Using Rate-Adaptive Codes
    58.
    发明申请
    Secure Wireless Communication Using Rate-Adaptive Codes 有权
    使用速率自适应代码的安全无线通信

    公开(公告)号:US20120148046A1

    公开(公告)日:2012-06-14

    申请号:US12965580

    申请日:2010-12-10

    IPC分类号: H04K1/00

    摘要: Data are communicated in a wireless network between a transmitter to a receiver. The transmitter estimates a first channel response between the receiver and the transmitter at the transmitter, and generating a first key based on the first channel response. The data are encoded at the transmitter using a rate-adaptive code to produce encoded data, which is scrambling using the first key before broadcasting. Subsequently, the receiver can estimate a second channel response to generate a second key to be used to descramble the broadcast data.

    摘要翻译: 数据在发射机到接收机之间的无线网络中通信。 发射机估计在发射机处的接收机和发射机之间的第一信道响应,并且基于第一信道响应产生第一密钥。 数据在发射机处使用速率自适应码进行编码,以产生编码数据,编码数据在广播之前使用第一个密钥加扰。 随后,接收机可以估计第二信道响应以产生要用于解扰广播数据的第二密钥。

    Method and system for determining locations of moving objects with maximum length sequences
    59.
    发明授权
    Method and system for determining locations of moving objects with maximum length sequences 失效
    用于确定具有最大长度序列的移动物体的位置的方法和系统

    公开(公告)号:US08121805B2

    公开(公告)日:2012-02-21

    申请号:US12571226

    申请日:2009-09-30

    IPC分类号: G01B7/04 G06F15/00

    CPC分类号: G01B7/003

    摘要: A location of an object is determined by arranging a sequence of bits on a substrate. The sequence of bits includes subsequence of bits, and each subsequence of bits is unique for each location along the substrate. When the object is at a particular location along the substrate a sensor detects the subsequence of bits at the particular location, and a decoder associates the location of the subsequence at the particular location with the object. The substrate can be a leaky coaxial cable with slits or not, corresponding to the bits, or lane markings on a road.

    摘要翻译: 通过在衬底上布置位序列来确定对象的位置。 比特序列包括比特的子序列,并且比特的每个子序列对于沿着基底的每个位置是唯一的。 当物体沿着衬底处于特定位置时,传感器检测特定位置处的位的子序列,并且解码器将特定位置处的子序列的位置与对象相关联。 衬底可以是具有狭缝的泄漏同轴电缆,对应于道路上的位或车道标记。

    Wireless Energy Transfer with Negative Index Material
    60.
    发明申请
    Wireless Energy Transfer with Negative Index Material 有权
    负指数材料的无线能量转移

    公开(公告)号:US20110156486A1

    公开(公告)日:2011-06-30

    申请号:US12648593

    申请日:2009-12-29

    IPC分类号: H02J17/00

    摘要: Embodiments of the invention disclose a method and a system configured to exchange energy wirelessly, comprising a structure configured to exchange the energy wirelessly via a coupling of evanescent waves, wherein the structure is electromagnetic (EM) and non-radiative, and wherein the structure generates an EM near-field in response to receiving the energy; and a controller configured to tune up the structure such that the near-field is generated according a particular energy distribution pattern.

    摘要翻译: 本发明的实施例公开了一种被配置为无线地交换能量的方法和系统,包括被配置为经由ev逝波的耦合无线地交换能量的结构,其中该结构是电磁(EM)和非辐射的,并且其中该结构产生 响应于接收能量的EM近场; 以及控制器,被配置为调整所述结构,使得根据特定的能量分布模式生成所述近场。