Adaptive delay adjustment for transmitted reference impulse radio systems
    1.
    发明授权
    Adaptive delay adjustment for transmitted reference impulse radio systems 失效
    发射参考脉冲无线电系统的自适应延迟调整

    公开(公告)号:US07573933B2

    公开(公告)日:2009-08-11

    申请号:US11029135

    申请日:2005-01-04

    IPC分类号: H04B1/00

    摘要: A method determines a delay time between reference and data pulses in a time-hopping impulse radio system. Channel state information of a channel between two transceivers is estimated periodically. The delay time frame between the reference and data pulses is then determined according to the channel state information.

    摘要翻译: 一种方法确定跳时脉冲无线电系统中的参考和数据脉冲之间的延迟时间。 周期性地估计两个收发器之间的信道的信道状态信息。 然后根据信道状态信息确定参考和数据脉冲之间的延迟时间帧。

    Adaptive frame durations for time-hopped impulse radio systems
    2.
    发明授权
    Adaptive frame durations for time-hopped impulse radio systems 失效
    时间跳跃脉冲无线电系统的自适应帧持续时间

    公开(公告)号:US07620369B2

    公开(公告)日:2009-11-17

    申请号:US11029132

    申请日:2005-01-04

    IPC分类号: H04B17/00

    CPC分类号: H04B1/719 H04B1/7176

    摘要: A method determines a duration of a frame in a time-hopping, impulse radio system. Channel state information of a channel between two transceivers is estimated periodically. A signal to noise and interference ratio is also estimated periodically. The frame duration of the frame is then determined according to the channel state information and the signal to noise and interference ratio.

    摘要翻译: 一种方法确定跳时脉冲无线电系统中的帧的持续时间。 周期性地估计两个收发器之间的信道的信道状态信息。 周期性地估计信噪比干扰比。 然后根据信道状态信息和信噪比干扰比来确定帧的帧持续时间。

    Modulating signals for coherent and differentially coherent receivers
    3.
    发明授权
    Modulating signals for coherent and differentially coherent receivers 失效
    调制相干和差分相干接收机的信号

    公开(公告)号:US07496153B2

    公开(公告)日:2009-02-24

    申请号:US10964918

    申请日:2004-10-14

    IPC分类号: H04B1/00

    摘要: A system incorporates time-hopped and transmitted-reference transceivers in the same wireless network. A transmitter modulates a sequence of bits in a wireless communications network by generating a reference waveform and a data waveform of a waveform pair for each current bit. The phase of the reference waveform depends on a previous modulated bit, and a difference in phase between the reference waveform and the data waveform pair depend on the current bit.

    摘要翻译: 系统在相同的无线网络中集成了跳时和发射参考收发器。 发射机通过为每个当前比特生成参考波形和波形对的数据波形来调制无线通信网络中的比特序列。 参考波形的相位取决于先前的调制位,参考波形和数据波形对之间的相位差取决于当前位。

    Modulating signals for coherent and differentially coherent receivers
    4.
    发明授权
    Modulating signals for coherent and differentially coherent receivers 有权
    调制相干和差分相干接收机的信号

    公开(公告)号:US07391802B2

    公开(公告)日:2008-06-24

    申请号:US11074168

    申请日:2005-03-07

    IPC分类号: H04B1/00

    摘要: A system incorporates time-hopped impulse radio (TH-IR) and transmitted-reference impulse radio (TR-IR) transceivers in the same wireless network. A transmitter modulates a sequence of bits in a wireless communications network by generating a reference waveform and a data waveform of a waveform pair for each current bit. The phase of the reference waveform depends on a previous modulated bit, and a difference in phase between the reference waveform and the data waveform pair depend on the current bit. A symbol period for the current bit is partitioned into multiple time intervals, and the reference waveform and the data waveform are encoded in a selected one of the time intervals that depends on the current bit.

    摘要翻译: 系统在同一无线网络中集成了时间跳跃脉冲无线电(TH-IR)和发射参考脉冲无线电(TR-IR)收发器。 发射机通过为每个当前比特生成参考波形和波形对的数据波形来调制无线通信网络中的比特序列。 参考波形的相位取决于先前的调制位,参考波形和数据波形对之间的相位差取决于当前位。 当前位的符号周期被划分成多个时间间隔,并且参考波形和数据波形被编码在取决于当前位的时间间隔中的所选择的一个中。

    M-ary modulation of signals for coherent and differentially coherent receivers
    5.
    发明授权
    M-ary modulation of signals for coherent and differentially coherent receivers 有权
    用于相干和差分相干接收机的信号的M-ary调制

    公开(公告)号:US07388927B2

    公开(公告)日:2008-06-17

    申请号:US11079362

    申请日:2005-03-14

    IPC分类号: H04L27/00

    摘要: A system incorporates time-hopped impulse-radio (TH-IR), transmitted-reference impulse-radio (TR-IR) and noncoherent transceivers in the same wireless network. A transmitter modulates a sequence of bits in a wireless communications network by selecting one coding sequence from a set of orthogonal or quasi-orthogonal coding sequences based on a current subsequence of bits of the input sequence, generating a reference waveform and a data waveform of a waveform pair for each sequence.

    摘要翻译: 系统在同一无线网络中集成了跳时脉冲无线电(TH-IR),发射参考脉冲无线电(TR-IR)和非相干收发器。 发射机通过基于输入序列的比特的当前子序列从一组正交或准正交编码序列中选择一个编码序列来调制无线通信网络中的比特序列,生成参考波形和数据波形 每个序列的波形对。

    Timing synchronization of wireless networks
    6.
    发明授权
    Timing synchronization of wireless networks 有权
    无线网络的时序同步

    公开(公告)号:US09554348B2

    公开(公告)日:2017-01-24

    申请号:US13906117

    申请日:2013-05-30

    IPC分类号: H04J3/06 H04W56/00 H04B7/26

    摘要: A single wireless slave node may be in a timing virtual network (TVN) with neighboring wireless slave nodes. The single wireless slave node may store information indicative of the identity, link propagation delay, and channel signature of each of its neighboring wireless slave nodes. The single wireless slave node may repeatedly update a timing estimate based on the stored information and by performing a physical layer fast reference signal broadcast transmission and reception.

    摘要翻译: 单个无线从节点可以在具有相邻无线从节点的定时虚拟网络(TVN)中。 单个无线从节点可以存储指示其相邻无线从节点中的每一个的身份,链路传播延迟和信道签名的信息。 单个无线从节点可以基于所存储的信息并且通过执行物理层快速参考信号广播发送和接收来重复地更新定时估计。

    TIMING SYNCHRONIZATION OF WIRELESS NETWORKS
    7.
    发明申请
    TIMING SYNCHRONIZATION OF WIRELESS NETWORKS 有权
    无线网络的时序同步

    公开(公告)号:US20130322426A1

    公开(公告)日:2013-12-05

    申请号:US13906117

    申请日:2013-05-30

    IPC分类号: H04W56/00

    摘要: A single wireless slave node may be in a timing virtual network (TVN) with neighboring wireless slave nodes. The single wireless slave node may store information indicative of the identity, link propagation delay, and channel signature of each of its neighboring wireless slave nodes. The single wireless slave node may repeatedly update a timing estimate based on the stored information and by performing a physical layer fast reference signal broadcast transmission and reception.

    摘要翻译: 单个无线从节点可以在具有相邻无线从节点的定时虚拟网络(TVN)中。 单个无线从节点可以存储指示其相邻无线从节点中的每一个的身份,链路传播延迟和信道签名的信息。 单个无线从节点可以基于所存储的信息并且通过执行物理层快速参考信号广播发送和接收来重复地更新定时估计。

    Method for selecting antennas in a wireless networks
    8.
    发明授权
    Method for selecting antennas in a wireless networks 有权
    在无线网络中选择天线的方法

    公开(公告)号:US08046029B2

    公开(公告)日:2011-10-25

    申请号:US12055522

    申请日:2008-03-26

    IPC分类号: H04M1/00

    CPC分类号: H04B7/0691 H04B7/0874

    摘要: A method selects antennas in a wireless network including a base station and one or more transceivers. The base station specifies times, subcarriers and subsets of antennas to use to transmit sounding reference signals (SRS) to the base station. Then, the transceiver transmits the SRS according to the specified times and subcarriers using different subsets of the set antennas. The SRS are received in the base station, and the base station selects one of the different subset of the antennas based on the received SRS, and indicates the selected subset of the antennas to the transceiver.

    摘要翻译: 一种方法选择包括基站和一个或多个收发器的无线网络中的天线。 基站指定用于向基站发送探测参考信号(SRS)的时间,子载波和天线子集。 然后,收发器使用设定天线的不同子集,根据指定的时间和子载波来发送SRS。 在基站中接收SRS,并且基站基于所接收的SRS选择天线的不同子集中的一个,并将所选天线的子集指示给收发机。

    Signaling and training for antenna selection in OFDMA networks
    9.
    发明授权
    Signaling and training for antenna selection in OFDMA networks 有权
    OFDMA网络中天线选择的信令和训练

    公开(公告)号:US08009580B2

    公开(公告)日:2011-08-30

    申请号:US12117219

    申请日:2008-05-08

    IPC分类号: H04W4/00

    摘要: A method selects antennas in an OFDMA wireless network including a base station and a mobile station. The mobile station measures a channel state of a downlink in a downlink subframe using different subsets of available antennas, and selects a subset of receive antennas for downlink reception based on the channel states between the base station and the different subsets of antennas at the mobile station. The base station measures the channel state in an uplink using an uplink subframe received in the base station from the mobile station, and selects a subset of transmit antennas for mobile station's uplink transmission based on the channel states between the base station and different subset of antennas at the mobile station.

    摘要翻译: 一种方法选择包括基站和移动台的OFDMA无线网络中的天线。 移动站使用不同的可用天线子集来测量下行链路子帧中的下行链路的信道状态,并且基于移动站的基站和不同的天线子集之间的信道状态来选择用于下行链路接收的接收天线的子集 。 基站使用来自移动站的基站中接收到的上行链路子帧来测量上行链路中的信道状态,并且基于基站和不同的天线子集之间的信道状态来选择用于移动台的上行链路传输的发射天线的子集 在移动台。

    Method for routing packets in ad-hoc networks with partial channel state information
    10.
    发明授权
    Method for routing packets in ad-hoc networks with partial channel state information 有权
    在具有部分信道状态信息的自组织网络中路由分组的方法

    公开(公告)号:US07822029B2

    公开(公告)日:2010-10-26

    申请号:US12271200

    申请日:2008-11-14

    IPC分类号: H04L12/56

    摘要: A method routs a packet from a source node, via relay nodes, to a destination node. The nodes are connected by wireless links x. A channel power gain γ is measured for each link x. Resource trade-off curves y=f(x) are constructed for each link x from the channel power gains γ, wherein y represents a set of resources. A hyperbolic upper bound h/x+c is fitted to each resource curve, such that h/x+c≧f(x), wherein h is a scale factor, and c is an offset. A route with an optimal resource allocation is selected according to the hyperbolic upper bounds. Then, the packet is transmitted from the source node to the destination node using the route.

    摘要翻译: 方法将来自源节点的分组经由中继节点路由到目的地节点。 节点通过无线链路x连接。 对于每个链路x测量信道功率增益γ。 对于来自信道功率增益γ的每个链路x构造资源权衡曲线y = f(x),其中y表示一组资源。 双曲线上限h / x + c适合于每个资源曲线,使得h / x +c≥f(x),其中h是比例因子,c是偏移。 根据双曲线上限选择具有最佳资源分配的路由。 然后,使用该路由从源节点向目的地节点发送分组。