Adaptive power amplifier system and method
    1.
    发明授权
    Adaptive power amplifier system and method 有权
    自适应功率放大器系统及方法

    公开(公告)号:US06639463B1

    公开(公告)日:2003-10-28

    申请号:US09645117

    申请日:2000-08-24

    IPC分类号: H03F368

    CPC分类号: H03F3/602 H03F2200/198

    摘要: A power amplifier system uses adaptive distribution of signals through an amplifier architecture of parallel amplifier stages. For example, the power amplifier system can adjust the operation of individual amplifier stages in the amplifier arrangement, for example to reduce power handling capability of the amplifier stages based on information of the signal to be amplified by the amplifier arrangement, such as the power level. To take advantage of the adjusted operation of the amplifier stages, the power amplifier system uses a variable power divider to reapportion the input signal power among the amplifier stages and at least one variable combiner to adaptively combine amplified signals from the amplifier stages in changing proportions. As such, the power amplifier system is reconfigurable and/or can adapt to changing conditions to provide improved performance and/or efficiency.

    摘要翻译: 功率放大器系统通过并联放大器级的放大器架构来使用信号的自适应分布。 例如,功率放大器系统可以调节放大器装置中的各个放大器级的操作,例如,基于放大器装置要放大的信号的信息,例如功率电平来降低放大器级的功率处理能力 。 为了利用放大器级的调整的操作,功率放大器系统使用可变功率分配器来重新分配放大器级之间的输入信号功率和至少一个可变组合器,以适应性地组合来自放大器级的放大信号以变化的比例。 因此,功率放大器系统是可重构的和/或可以适应变化的条件以提供改进的性能和/或效率。

    System and method for producing amplified signal(s) or version(s) thereof

    公开(公告)号:US06294956B1

    公开(公告)日:2001-09-25

    申请号:US09444318

    申请日:1999-11-19

    IPC分类号: H03F368

    摘要: A signal amplification system involves transforming at least one signal to be amplified into at least one transformed signal which is amplified and the resulting amplified transformed signal(s) can be used to produce a version(s) of the at least one original signal. The at least one transformed signal can be produced from the at least one original signal by using the at least one original signal to amplitude and/or angle (phase or frequency) modulate the at least one original signal. After amplification of the at least one transformed signal, the resulting at least one amplified transformed signal is de-modulated to produce a version(s) of the at least one signal. In transforming the at least one original signal to produce the at least one transformed signal, the at least one original signal is transformed into a more desirable form, such as a more power efficient form, for amplification. By amplifying the at least one transformed signal, more efficient and/or less costly amplifier(s) can be used to amplify the at least one signal in a linear fashion. Depending on the embodiment, at least one signal to be amplified can be transformed into at least one transformed signal by combining offset versions of the at least one original signal to produce the at least one transformed signal having the energy of the at least one signal spread in time and/or to produce the at least one transformed signal having a reduced peak to average power ratio(s)(PAR). Multiple signals to be amplified can be transformed into at least one transformed signal by combining the multiple signals, for example to produce the at least one transformed signal having a reduced peak to average power ratio(s) (PARs). After the at least one transformed signal is amplified, the resulting signal(s) can be de-modulated, inversely transformed, de-spread or reconstructed to recover a version(s) of the original signal(s).

    Trust management system for decision fusion in networks and method for decision fusion
    4.
    发明授权
    Trust management system for decision fusion in networks and method for decision fusion 失效
    网络决策融合信任管理系统和决策融合方法

    公开(公告)号:US08583585B2

    公开(公告)日:2013-11-12

    申请号:US13177587

    申请日:2011-07-07

    IPC分类号: G06F9/44 G06N7/02 G06N7/06

    CPC分类号: G06N7/005

    摘要: Disclosed is a trust management system for decision fusion in a network. The trust management system includes a detection subsystem having a plurality of sensors, and a plurality of channels. Each sensor of the plurality of sensors detects one of an occurrence and a non-occurrence of an event in the network. The trust management system further includes a fusion subsystem communicably coupled to the detection subsystem through the plurality of channels for receiving a decision of the each sensor and iteratively assigning a pre-determined weightage. The fusion subsystem ascertains a summation of respective decisions of the plurality of sensors and compares the weighted summation with a corresponding decision of the each sensor. The fusion subsystem further updates the assigned pre-determined weightage and determines the presence of the each sensor being one of a compromised sensor and a non-compromised sensor. Further disclosed is a method for decision fusion in a network.

    摘要翻译: 公开了一种用于网络中决策融合的信任管理系统。 信任管理系统包括具有多个传感器和多个信道的检测子系统。 多个传感器的每个传感器检测网络中事件的发生和不发生之一。 信任管理系统还包括通过多个通道可通信地耦合到检测子系统的融合子系统,用于接收每个传感器的决定并迭代地分配预定的权重。 融合子系统确定多个传感器的相应决定的总和,并将加权求和与每个传感器的相应决定进行比较。 融合子系统进一步更新所分配的预定权重并且确定每个传感器的存在是受损传感器和非妥协传感器之一。 进一步公开的是一种用于网络中的决策融合的方法。

    Distributed adaptive scheduling of communications among nodes in a mobile ad hoc network
    5.
    发明授权
    Distributed adaptive scheduling of communications among nodes in a mobile ad hoc network 有权
    移动自组织网络节点间通信的分布式自适应调度

    公开(公告)号:US08284738B2

    公开(公告)日:2012-10-09

    申请号:US12386107

    申请日:2009-04-14

    IPC分类号: H04J3/00

    摘要: Communications in a mobile network are scheduled by defining reservation frames having time slots during which network nodes can transmit certain traffic loads while avoiding interference. The nodes maintain maps that identify the slots as either free or reserved based on each node's existing reservations, and reservation information the node receives from neighboring nodes. A node wishing to transmit traffic determines the number of slots required to carry the traffic, selects a first set of slots from among those identified in its maps as free, and transmits a reservation initiation message (RIM) that identifies the first set of slots. Nodes receiving the RIM determine which, if any, of the first set of slots are already reserved based on their own maps, and transmit counter reservation initiation messages (CRIMs) if any slots are reserved. The CRIMs also identify those slots that the CRIM transmitting nodes determine to be currently free.

    摘要翻译: 通过定义具有时隙的预留帧来调度移动网络中的通信,在该时隙期间网络节点可以在避免干扰的同时发送某些业务负载。 这些节点基于每个节点的现有预留来维护将时隙标识为空闲或保留的映射,以及节点从相邻节点接收的预留信息。 希望发送业务的节点确定携带业务所需的时隙数量,从其映射中标识的那些空闲时隙选择第一组时隙,并发送标识第一组时隙的预留发起消息(RIM)。 接收RIM的节点确定第一组时隙中的哪一个(如果有的话)已经基于它们自己的映射预留,并且如果保留了任何时隙,则发送计数器预留发起消息(CRIM)。 CRIM还识别CRIM发送节点确定当前是空闲的那些时隙。

    SYSTEM AND METHOD FOR ASSIGNING TIME SLOTS FOR TRANSMISSION OF PACKETS IN A WIRELESS COMMUNICATION NETWORK UTILIZING KNOWLEDGE OF A DATA PATH
    6.
    发明申请
    SYSTEM AND METHOD FOR ASSIGNING TIME SLOTS FOR TRANSMISSION OF PACKETS IN A WIRELESS COMMUNICATION NETWORK UTILIZING KNOWLEDGE OF A DATA PATH 有权
    用于在无线通信网络中传输分组的时间段的系统和方法,利用数据路径的知识

    公开(公告)号:US20100260131A1

    公开(公告)日:2010-10-14

    申请号:US12760133

    申请日:2010-04-14

    IPC分类号: H04W72/04

    摘要: A node in a wireless communication network comprises a processor that receives information regarding a first plurality of packets to be transmitted in an epoch, a first path of nodes for the first plurality of packets, and a first flow rate. The processor receives information regarding a second plurality of packets to be transmitted in the epoch, a second path of nodes for the second plurality of packets, and a second flow rate. The processor determines weights for the paths based on the flow rates. The processor assigns pipelines for the paths and creates groups of pipelines based on the weights. The groups may be assigned to a schedule.

    摘要翻译: 无线通信网络中的节点包括处理器,其接收关于要在时代中发送的第一多个分组的信息,用于第一多个分组的节点的第一路径和第一流量。 处理器接收关于要在时代中发送的第二多个分组的信息,用于第二多个分组的第二节点路径和第二流量。 处理器根据流量确定路径的权重。 处理器为路径分配管道,并根据权重创建管道组。 可以将组分配给计划。

    Alternating gain and phase control system and method
    7.
    发明授权
    Alternating gain and phase control system and method 有权
    交流增益和相位控制系统及方法

    公开(公告)号:US06392480B1

    公开(公告)日:2002-05-21

    申请号:US09378009

    申请日:1999-08-19

    IPC分类号: H03F126

    CPC分类号: H03F1/3235 H03F2201/3212

    摘要: A gain and phase control system performs a gain (or phase) adjustment based on the results of a previous gain (or phase) adjustment after an intervening phase (or gain) adjustment. A gain adjustment is based on the results of a previous gain adjustment rather than on the results of an intervening phase adjustment. A phase adjustment is based on the results of a previous phase adjustment rather than the results of an intervening gain adjustment. As such, the above-mentioned increase in error signal does not occur because a gain adjustment is based on the results of the previous gain adjustment, and a phase adjustment is based on the results of the previous phase adjustments. In accordance with another aspect of the present invention, the gain and phase control system makes a gain (or phase) adjustment in parallel with detecting the results from a previous phase (or gain) adjustment, thereby taking advantage of the delay between adjustment and detection of the resulting error signal to improve the convergence rate. For example, the gain and phase control system can perform single alternating gain and phase adjustments and make a gain (or phase) adjustment while detecting the error signal resulting from a preceding phase (or gain) adjustment. When the error signal resulting from the gain (or phase) adjustment is being detected, the gain and phase control system makes a phase (or gain) adjustment using the results detected from the preceding phase (or gain) adjustment.

    摘要翻译: 增益和相位控制系统在中间相位(或增益)调整之后基于先前增益(或相位)调整的结果执行增益(或相位)调整。 增益调整基于先前增益调整的结果,而不是中间相位调整的结果。 相位调整基于先前相位调整的结果,而不是中间增益调整的结果。 因此,由于增益调整是基于先前的增益调整的结果而不会发生上述误差信号的增加,并且相位调整基于先前的相位调整的结果。 根据本发明的另一方面,增益和相位控制系统与检测前一相位(或增益)调整的结果并行地进行增益(或相位)调整,从而利用调节和检测之间的延迟 产生的误差信号提高收敛速度。 例如,增益和相位控制系统可以执行单次交变增益和相位调整,并在检测由前一相位(或增益)调整产生的误差信号的同时进行增益(或相位)调整。 当检测到增益(或相位)调整产生的误差信号时,增益和相位控制系统使用从前一相位(或增益)调整检测到的结果进行相位(或增益)调整。

    Distributed medium access control (DMAC) for mobile ad hoc networks
    8.
    发明授权
    Distributed medium access control (DMAC) for mobile ad hoc networks 有权
    用于移动自组织网络的分布式介质访问控制(DMAC)

    公开(公告)号:US08976728B2

    公开(公告)日:2015-03-10

    申请号:US12587615

    申请日:2009-10-10

    IPC分类号: H04W4/00 H04J3/00 H04W74/02

    CPC分类号: H04W74/02

    摘要: Message or traffic data is transmitted from a given radio or node for reception by one or more other nodes in a communications network, by arranging the node for transmitting the data according to a selected one of a number of different medium access protocols. The medium access protocol selected for a given message or traffic is determined according to one or more of (a) the size of the traffic, (b) the priority of the traffic, (c) the periodicity of the traffic, and (d) whether the traffic is broadcast or unicast to the other nodes in the network. Each radio includes one or more processor and memory modules configured to output messages or traffic for transmission from the radio according to the selected medium access protocol. By using distributed scheduling and traffic control to protect against hidden nodes, the radios can maintain agile portability in tactical urban environments.

    摘要翻译: 消息或业务数据从给定的无线电或节点发送,以便由通信网络中的一个或多个其他节点接收,通过根据多个不同的媒体接入协议中选择的一个来安排用于发送数据的节点。 根据(a)流量大小,(b)流量的优先级,(c)流量的周期性,以及(d)流量的周期性等)中的一个或多个来确定针对给定消息或业务选择的媒体访问协议, 流量是否广播或单播到网络中的其他节点。 每个无线电装置包括一个或多个处理器和存储器模块,其被配置为根据所选择的介质访问协议从无线电输出消息或流量以进行传输。 通过使用分布式调度和流量控制来保护隐藏节点,无线电可以在战术城市环境中保持灵活的可移植性。

    Time synchronization for distributed mobile ad hoc networks
    10.
    发明授权
    Time synchronization for distributed mobile ad hoc networks 失效
    分布式移动自组织网络的时间同步

    公开(公告)号:US08391271B2

    公开(公告)日:2013-03-05

    申请号:US12727899

    申请日:2010-03-19

    IPC分类号: H04J3/06

    摘要: Time synchronization among nodes in a wireless mobile ad hoc network (MANET) is obtained using a cross layer approach. Each node maintains a routing table that contains entries corresponding to other nodes of the network that are one or more hops away from the node, and topology messages are exchanged periodically among the nodes in order to update their routing tables. A network master node is selected, and remaining nodes that are one or more hops away from the master node are defined as slave nodes. The master node includes master timing information in the topology messages it transmits. The timing information is concatenated to include a first time (T1) at which a topology message was received by the master from each of the slave nodes, and a second time (td) at which the master node transmits a topology message after receiving all the topology messages from the slave nodes.

    摘要翻译: 使用跨层方法获得无线移动自组织网络(MANET)中的节点之间的时间同步。 每个节点维护路由表,该路由表包含与该网络的其他节点相对应的条目,该节点与节点之间的一个或多个跳点,并且在节点之间周期性地交换拓扑消息以更新其路由表。 选择网络主节点,并且远离主节点的一个或多个跳的剩余节点被定义为从节点。 主节点包括其发送的拓扑消息中的主定时信息。 定时信息被连接以包括主机从每个从节点接收到拓扑消息的第一时间(T1)和主节点在接收到所有从机节点之后发送拓扑消息的第二时间(td) 来自从节点的拓扑消息。