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1.发明授权Method for estimating time of arrival of received signals for ultra wide band impulse radio systems 失效用于估计超宽带脉冲无线电系统的接收信号的到达时间的方法公开(公告)号：US07436909B2
公开(公告)日：2008-10-14
申请号：US10988764
申请日：2004-11-15
IPC分类号： H04L27/06
CPC分类号： H04B1/7183
摘要： A method estimates a time of arrival of a signal received in a wireless communication system. An energy in a frame of a received signal is measured to determine a block in the frame, the block representing a coarse time of arrival of the received signal. Multiple time-delayed versions of a template signal are combined with the block of the received signal to select a particular template signal. The particular template signal identifies a particular chip representing a fine time of arrival of the received signal.
摘要翻译： 方法估计在无线通信系统中接收的信号的到达时间。 测量接收信号的帧中的能量以确定帧中的块，该块表示接收信号的粗略到达时间。 模板信号的多个时间延迟版本与接收信号的块组合以选择特定的模板信号。 特定模板信号识别表示接收信号的精确到达时间的特定芯片。
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公开(公告)号：US07349458B2
公开(公告)日：2008-03-25
申请号：US10847072
申请日：2004-05-17
IPC分类号： H04B1/69
CPC分类号： H04B1/71637 , H04B2001/6908
摘要： In a time-hopped impulse radio system, each symbol is transmitted over a channel having different multipath components as a set of Nf frames. Each frame includes one pulse. All frames of a received signal corresponding to the symbol are sampled to generate Nf×L samples, where L is the number of samples for each frame. Then, the Nf×L samples are combined according to a minimum mean square error criterion to obtain a decision variable corresponding to the symbol.
摘要翻译： 在时间跳跃的无线电系统中，每个符号通过具有不同多路径分量的信道作为一组N帧帧发送。 每帧包括一个脉冲。 对与该符号相对应的接收信号的所有帧进行采样以产生N个样本，其中L是每个帧的采样数。 然后，根据最小均方误差准则组合N个样本，以获得对应于该符号的判定变量。
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3.发明申请Method and Receiver for Identifying a Leading Edge Time Period in a Received Radio Signal 审中-公开用于识别接收无线电信号中的前沿时间周期的方法和接收机公开(公告)号：US20090170458A1
公开(公告)日：2009-07-02
申请号：US11995394
申请日：2005-07-19
IPC分类号： H04B17/00
CPC分类号： H04B1/71637 , H04B1/7183
摘要： A method for identifying a leading edge time period of a received radio signal includes identifying a greatest energy time period in a sequence of time periods. The received radio signal has a greatest average energy in the greatest energy time period. The method also includes identifying a least energy time period in the sequence of time periods. The received radio signal has a least average energy in the least energy time period. Further, the method includes setting a threshold energy based on the greatest average energy and the least average energy, determining a number of window time periods based on a characteristic of a radio channel used by the received radio signal, and identifying as a leading edge time period an earliest time period that precedes the greatest energy time period within the number of window time periods. The received radio signal in the leading edge time period has an average energy greater than or equal to the threshold energy.
摘要翻译： 一种用于识别所接收的无线电信号的前沿时间段的方法包括识别时间序列中的最大能量时间段。 接收的无线电信号在最大能量时间段内具有最大的平均能量。 该方法还包括识别时间序列中的最少能量时间段。 所接收的无线电信号在最短能量时间段内具有最小平均能量。 此外，该方法包括基于最大平均能量和最小平均能量来设置阈值能量，基于由所接收的无线电信号使用的无线电信道的特性确定窗口时间段的数量，以及将其识别为前沿时间 期间是在窗口时间段内的最大能量时间段之前的最早时间段。 在前沿时间段中接收的无线电信号具有大于或等于阈值能量的平均能量。
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4.发明申请Method and System for Estimating Time of Arrival of Signals Using Multiple Different Time Scales 审中-公开使用多个不同时间尺度估计信号到达时间的方法和系统公开(公告)号：US20090075590A1
公开(公告)日：2009-03-19
申请号：US11577106
申请日：2005-04-15
IPC分类号： H04B7/24
CPC分类号： H04B1/71637 , G01S5/0221 , G01S13/76 , H04B17/318 , H04B17/336 , H04B17/345
摘要： A method and system (500) estimates a time of arrival of a signal received via a wireless communications channel. The energy in the received signal is conditioned at multiple different time scales to produce a conditioned signal (700). Then, a leading edge is detected in the conditioned signal (550). The leading edge corresponds to the time of arrival of the received signal (551).
摘要翻译： 方法和系统（500）估计经由无线通信信道接收的信号的到达时间。 接收信号中的能量被调节在多个不同的时标上以产生调节信号（700）。 然后，在调节信号（550）中检测前沿。 前沿对应于接收信号的到达时间（551）。
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公开(公告)号：US08218523B2
公开(公告)日：2012-07-10
申请号：US12419874
申请日：2009-04-07
IPC分类号： H04J3/16
CPC分类号： H04L1/1621 , H04L27/26 , H04L2001/0093 , H04L2001/0097
摘要： A network includes a master node (master) and a set of slave nodes (slaves). The network uses orthogonal frequency-division multiplexing (OFDM) and time division multiple access (TDMA) symbols on sub-carriers. During a first downlink transmission from the master to the set of slaves using downlinks and all of the sub-carriers, a broadcast polling packet including data packets for each slave and sub-carrier assignments for the slaves is broadcast. Each slave transmits simultaneously to the master using uplinks and the assigned sub-carriers, a first response packet after receiving the broadcast polling packet. The master then broadcasts using the downlinks and all of the sub-carriers, a group acknowledgement packet, wherein the broadcast polling packet, the response packet, and the group acknowledgement packet include one superframe in one communication cycle, and wherein the broadcasting on the downlinks and the transmitting on the uplinks are disjoint in time.
摘要翻译： 网络包括主节点（主节点）和一组从节点（从节点）。 该网络在子载波上使用正交频分复用（OFDM）和时分多址（TDMA）符号。 在使用下行链路和所有子载波从主机到从机组的第一次下行链路传输期间，广播包括用于每个从机的数据分组的广播轮询分组和用于从机的子载波分配。 每个从设备使用上行链路和分配的子载波同时发送到主设备，第一响应分组在接收到广播轮询分组之后。 然后主机使用下行链路和所有子载波，一组确认分组广播，其中广播轮询分组，响应分组和组确认分组在一个通信周期中包括一个超帧，并且其中在下行链路上进行广播 并且在上行链路上的发送在时间上是不相交的。
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公开(公告)号：US07995644B2
公开(公告)日：2011-08-09
申请号：US12089744
申请日：2005-11-10
IPC分类号： H04L12/06
CPC分类号： H04B1/7163 , G01S2013/466 , G06K7/10306 , H04W12/02
摘要： An apparatus, system, method and computer program product for secure ranging between at least two devices in radio communications with each other. In particular, an apparatus, system, method and computer program product for secure ranging between at least two devices communicating via ultra wideband (UWB) protocols. Either ternary-IR or time-hope-IR sequences are used for ranging and security. A first device transmits a range packet. A second device responds to the range packet after a delay time known only to the first and second devices. The delay time can be selected randomly by either to the first device or the second device and made known to the other device in an encrypted notification packet.
摘要翻译： 一种用于在无线电通信中的至少两个设备之间进行安全测距的装置，系统，方法和计算机程序产品。 特别地，一种用于在通过超宽带（UWB）协议通信的至少两个设备之间进行安全测距的装置，系统，方法和计算机程序产品。 三元IR或时间希望IR序列用于测距和安全性。 第一设备发送范围分组。 在第一和第二设备已知的延迟时间之后，第二设备响应范围分组。 延迟时间可以随机地选择到第一设备或第二设备，并且以加密的通知分组对其他设备知道。
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7.发明申请Method and Apparatus for Generating Dynamically Varying Time Hopping Sequences for UWB Signals 审中-公开用于生成用于UWB信号的动态变化的时间跳跃序列的方法和装置公开(公告)号：US20090091400A1
公开(公告)日：2009-04-09
申请号：US12160168
申请日：2006-01-11
CPC分类号： H04B1/71632 , H04B1/7176 , H04B2001/6908
摘要： A method and apparatus modulate a polarity of a burst of pulses of the impulse radio signal using a first pseudo noise sequence generated by a shift register and a position of the burst of pulses using a second pseudo noise sequence generated by the shift register.
摘要翻译： 方法和装置使用由移位寄存器产生的第一伪噪声序列和使用由移位寄存器产生的第二伪噪声序列的脉冲串的位置来调制脉冲无线电信号的脉冲串的极性。
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8.发明申请Method for transmitting a communications packet in a wireless communications network 有权用于在无线通信网络中发送通信分组的方法公开(公告)号：US20070274261A1
公开(公告)日：2007-11-29
申请号：US11477255
申请日：2006-06-29
IPC分类号： H04Q7/00
摘要： A method and apparatus for transmitting a packet in a wireless communications network is presented. A packet is constructed to include synchronization header, a physical layer header, and a payload. A preamble and a start of frame delimiter are inserted in the synchronization header. Multiple fixed length ternary sequences are inserted in the start of frame delimiter in an arbitrary order, and then the packet is transmitted.
摘要翻译： 提出了一种用于在无线通信网络中发送分组的方法和装置。 分组被构造为包括同步头，物理层头和有效载荷。 前同步码和帧定界符开始插入到同步头中。 多个固定长度的三进制序列以任意顺序插入到帧定界符的起始处，然后发送分组。
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9.发明授权Method for transmitting a communications packet in a wireless communications network 有权用于在无线通信网络中发送通信分组的方法公开(公告)号：US07792091B2
公开(公告)日：2010-09-07
申请号：US11475264
申请日：2006-06-27
摘要： A method and apparatus for transmitting a packet in a wireless communications network is presented. A packet is constructed to include synchronization header, a physical layer header, and a payload. A preamble and a start of frame delimiter is inserted in the synchronization header. Multiple pairs of cores and of suffixes are inserted in the start of frame delimiter, and then the packet is transmitted.
摘要翻译： 提出了一种用于在无线通信网络中发送分组的方法和装置。 分组被构造为包括同步头，物理层头和有效载荷。 在同步头中插入前导码和帧定界符开始。 在帧定界符的起始处插入多对核心和后缀，然后传输分组。
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公开(公告)号：US07593342B2
公开(公告)日：2009-09-22
申请号：US11566846
申请日：2006-12-05
申请人： Andreas F. Molisch , Neelesh B. Mehta , Jonathan S. Yedidia , Zhifeng Tao , Zafer Sahinoglu , Philip V. Orlik , Jin Zhang
发明人： Andreas F. Molisch , Neelesh B. Mehta , Jonathan S. Yedidia , Zhifeng Tao , Zafer Sahinoglu , Philip V. Orlik , Jin Zhang
IPC分类号： G01R31/08
CPC分类号： H04B7/026 , H04B7/15592 , H04B7/2606 , H04L1/06 , H04L1/0618 , H04L2001/0092 , H04W52/46
摘要： A method selects a route in a wireless cooperative relay network of nodes, the nodes including a source, a set of relays, and a destination. A codeword is encoded as a data stream. The data stream is transmitted from a source to a destination via a set of relays. Mutual information is accumulated at a particular node to decode the data stream and recover the codeword. Then, a route from the source to the destination is selected based on channel state information between the nodes while transmitting and accumulating.
摘要翻译： 方法选择节点的无线协作中继网络中的路由，节点包括源，一组中继和目的地。 码字被编码为数据流。 数据流通过一组中继从源传送到目的地。 在特定节点处累积相互信息以解码数据流并恢复码字。 然后，在发送和累加的同时，基于节点之间的信道状态信息来选择从源到目的地的路由。
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