公开(公告)号：US20120150468A1

公开(公告)日：2012-06-14

申请号：US12967909

申请日：2010-12-14

申请人： Zafer Sahinoglu ,  Ming Sun ,  Koon Hoo Teo

发明人： Zafer Sahinoglu ,  Ming Sun ,  Koon Hoo Teo

IPC分类号： G06F19/00 ,  G06F17/14 ,  G06F17/10

CPC分类号： G01R19/2513 ,  H02J3/40

摘要： A method estimates parameters of 3-phase voltage signals to synchronize a power grid in a presence of a voltage unbalance by transforming the 3-phase voltage signals to αβ-reference signals using a Clark transformation matrix, and estimating sinusoidal signals and corresponding quadrature signals of the αβ-reference signals using an extended Kalman filter, and determining a phase angle of a positive sequence based on a relationship of the phase angle to the estimated the sinusoidal signals.

摘要翻译： 一种方法通过使用克拉克变换矩阵将三相电压信号转换为α和bgr-参考信号，并估计正弦信号和相应的正交信号，来估计三相电压信号的参数，以使电压不平衡存在电力同步的电网 使用扩展卡尔曼滤波器的α和bgr参考信号，并且基于相位角与估计的正弦信号的关系来确定正序列的相位角。

公开(公告)号：US08054226B2

公开(公告)日：2011-11-08

申请号：US12502829

申请日：2009-07-14

申请人： Zafer Sahinoglu ,  Ghulam M. Bhatti ,  Jinyun Zhang

发明人： Zafer Sahinoglu ,  Ghulam M. Bhatti ,  Jinyun Zhang

IPC分类号： G01S3/02

CPC分类号： H04W64/00 ,  G01S5/0289 ,  H04W84/18

摘要： A method localizes a set of nodes in a wireless network that includes a target node having unknown location and a set of anchor nodes having known locations. The set of anchor nodes is partitioned into subsets of anchor nodes, wherein each subset has at least three anchor nodes. A distance from the target node to each of anchor nodes in each subset is measured, to estimate possible locations of the target node. A geometric constraint is applied to each estimated location to determine valid locations, which are then filtered to determine filtered locations. The filtered locations are averaged to determine an initial estimate of the location.

摘要翻译： 一种方法将无线网络中的一组节点定位，其包括具有未知位置的目标节点和具有已知位置的一组锚节点。 锚节点集合被划分为锚节点的子集，其中每个子集具有至少三个锚节点。 测量从目标节点到每个子集中每个锚节点的距离，以估计目标节点的可能位置。 将几何约束应用于每个估计位置以确定有效位置，然后将其过滤以确定过滤的位置。 对经滤波的位置进行平均以确定位置的初始估计。

公开(公告)号：US20110164555A1

公开(公告)日：2011-07-07

申请号：US12651472

申请日：2010-01-03

申请人： Raymond Yim ,  Hang Su ,  Zafer Sahinoglu

发明人： Raymond Yim ,  Hang Su ,  Zafer Sahinoglu

IPC分类号： H04W40/00 ,  H04L27/28

CPC分类号： H04W72/121 ,  H04B7/15557 ,  H04B7/2606 ,  H04W84/047 ,  H04W84/18

摘要： A wireless star network includes including a master node (master) and a set of N slave nodes (slaves), wherein the network uses orthogonal frequency division multiple access (OFDMA). The master partitions the set of slaves in a first subset A(i) and second subset B(j), wherein the first and second subsets are disjoint. Packets are transmitted by the first subset of slaves only while the master and second subset of slaves operate in receive mode, andpackets are transmitted by the second subset of slaves only while the master and first of slaves operate in receive mode.

摘要翻译： 无线星形网络包括主节点（主节点）和一组N个从节点（从属节点），其中网络使用正交频分多址（OFDMA）。 主分区在第一子集A（i）和第二子集B（j）中的从属组，其中第一和第二子集是不相交的。 分组仅由从机的第一子集发送，而从机的主机和第二子集在接收模式下操作，并且分组由从机的第二子集仅在主机和第一从机以接收模式操作时发送。

公开(公告)号：US07916778B2

公开(公告)日：2011-03-29

申请号：US11577143

申请日：2005-04-22

申请人： Zafer Sahinoglu ,  Fatih M. Porikli

发明人： Zafer Sahinoglu ,  Fatih M. Porikli

IPC分类号： H04B3/46 ,  H04B1/00

CPC分类号： H04B1/71637 ,  G01S5/0221 ,  G01S13/76 ,  H04B17/318 ,  H04B17/336 ,  H04B17/345

摘要： A method analyzes a radio signal received via a wireless channel. The radio signal includes multiple frames representing a transmitted symbol. Energy of each frame is sampled during multiple of non-overlapping time windows. The sampled energies are stored in an energy matrix indexed by the number of frames and the number of time windows in each frame to analyze the radio signal.

摘要翻译： 一种方法分析通过无线信道接收的无线电信号。 无线电信号包括表示传输符号的多个帧。 每个帧的能量在多个不重叠的时间窗口中被采样。 采样能量存储在由帧数和每个帧中的时间窗口数量索引的能量矩阵中，以分析无线电信号。

公开(公告)号：US20110038343A1

公开(公告)日：2011-02-17

申请号：US12362217

申请日：2009-01-29

申请人： Ghulam Bhatti ,  Zafer Sahinoglu

发明人： Ghulam Bhatti ,  Zafer Sahinoglu

IPC分类号： H04W72/04

CPC分类号： H04W28/06 ,  H04W48/08 ,  H04W72/04 ,  H04W84/18

摘要： In a wireless network that includes multiple nodes, each periodic announcement cycle of a communication schedule is partitioned into a set of time slots, including a set of management time slots, a set of beacon time slots, and a set of superframe time slots. Management frames are broadcast during the management slot to specify beacons. Beacons are transmitted during the beacon slots to specify when to transmit the superframes during the superframe time slots.

摘要翻译： 在包括多个节点的无线网络中，将通信调度的每个周期性通知周期划分成一组时隙，包括一组管理时隙，一组信标时隙和一组超帧时隙。 管理帧在管理槽中广播，以指定信标。 在信标时隙期间发送信标，以指定何时在超帧时隙期间发送超帧。

公开(公告)号：US07792091B2

公开(公告)日：2010-09-07

申请号：US11475264

申请日：2006-06-27

申请人： Zafer Sahinoglu ,  Andreas F. Molisch

发明人： Zafer Sahinoglu ,  Andreas F. Molisch

IPC分类号： H04J3/24 ,  H04J3/06 ,  H04J3/00

CPC分类号： H04L7/041 ,  H04J13/00

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 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。

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。

公开(公告)号：US07573835B2

公开(公告)日：2009-08-11

申请号：US10918403

申请日：2004-08-16

申请人： Zafer Sahinoglu ,  Gang Ding

发明人： Zafer Sahinoglu ,  Gang Ding

IPC分类号： H04L12/28

CPC分类号： H04L45/32 ,  H04W40/00 ,  H04W84/18

摘要： A method of communicating information in a communication network with a plurality of hierarchically addressed nodes includes receiving communication packets identifying 1-hop neighbor node addresses, a number of on-tree neighbors of neighbor nodes transmitting the received packets, and forwarding node addresses of forwarding nodes from which information in the received packets are to be rebroadcast. Further, the method includes identifying each 1-hop neighbor node which should be a forwarding node based on stored addresses and numbers of on-tree neighbors, and producing and transmitting a rebroadcast packet including addresses of forwarding nodes. A communication network system, a communication node in a communication network, and a computer program product include similar features. Communication packets embodied in an electromagnetic wave includes an address, a number of on-tree neighbors of neighbor nodes, and forwarding nodes from which the packets are to be rebroadcast.

摘要翻译： 一种在多个分层地址节点的通信网络中传送信息的方法包括：接收标识1跳邻居节点地址的通信分组，发送接收到的分组的邻居节点的树上邻居数，转发节点的转发节点地址 接收到的数据包中的信息将被重播。 此外，该方法包括基于存储的树上邻居的地址和数量来识别应该是转发节点的每个1跳邻居节点，并且生成并发送包括转发节点的地址的转播分组。 通信网络系统，通信网络中的通信节点和计算机程序产品包括类似的特征。 在电磁波中实现的通信分组包括地址，邻居节点的树上邻居数量以及转发节点，转发节点将要转发分组。

公开(公告)号：US20090195456A1

公开(公告)日：2009-08-06

申请号：US12026707

申请日：2008-02-06

申请人： Sinan Gezici ,  Zafer Sahinoglu

发明人： Sinan Gezici ,  Zafer Sahinoglu

IPC分类号： G01S1/24

CPC分类号： G01S5/0221 ,  G01S11/02

摘要： A method estimates a delay in a time of arrival (TOA) of a transmitted signal by receiving the transmitted signal at multiple antennas via corresponding channels. Each received signal is correlated with the transmitted signal to obtain estimated channel coefficients and an estimated TOA. A variance of noise is also obtained for each received signal. A weight is determined for each received signal by dividing the channel coefficients by the variance of the noise. The weights are summed, and each weight is multiplied by the estimated TOA to produce a weighted estimated TOA, which are also summed. The summed weighted estimated TOA are divided by the summed weights to determine a final TOA estimate with respect to the transmitted signal.

摘要翻译： 一种方法通过经由相应的信道在多个天线处接收发射信号来估计发射信号的到达时间（TOA）的延迟。 每个接收到的信号与发送的信号相关，以获得估计的信道系数和估计的TOA。 每个接收信号也可以获得噪声的方差。 通过将信道系数除以噪声的方差来确定每个接收信号的权重。 将权重相加，并且将每个权重乘以估计的TOA以产生加权估计TOA，其也相加。 将相加的加权估计TOA除以相加的权重以确定相对于发送信号的最终TOA估计。

公开(公告)号：US07564842B2

公开(公告)日：2009-07-21

申请号：US10882808

申请日：2004-07-01

申请人： Edgar Herbert Callaway, Jr. ,  Lance Eric Hester ,  Vernon Anthony Allen ,  Jasmeet Chhabra ,  Lakshman Krishnamurthy ,  Ralph M. Kling ,  Zafer Sahinoglu ,  Philip V. Orlik ,  Phil Jamieson ,  Phil Rudland ,  Zachary Smith ,  Myung J. Lee ,  Xuhui Hu ,  Yong Liu ,  Chunhui Zhu

发明人： Edgar Herbert Callaway, Jr. ,  Lance Eric Hester ,  Vernon Anthony Allen ,  Jasmeet Chhabra ,  Lakshman Krishnamurthy ,  Ralph M. Kling ,  Zafer Sahinoglu ,  Philip V. Orlik ,  Phil Jamieson ,  Phil Rudland ,  Zachary Smith ,  Myung J. Lee ,  Xuhui Hu ,  Yong Liu ,  Chunhui Zhu

IPC分类号： H04L12/28 ,  H04L12/56

CPC分类号： H04L45/48 ,  H04L45/52 ,  H04W40/02 ,  H04W40/24 ,  H04W84/10 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/22 ,  Y02D70/30

摘要： The disclosure is a routing method for data in a personal area network. The personal area network includes a plurality of nodes. The method includes receiving a frame at a node, determining whether the node contains a routing table entry for the frame destination, and when the node contains a routing table entry, determining a route for the frame based on a first routing protocol. The method further includes, when the node does not contain a routing table entry for the frame destination, determining whether a route should be discovered for the frame destination, and when a route should not be discovered, determining a route for the frame based on a second routing protocol.

摘要翻译： 本公开是用于个人区域网络中的数据的路由方法。 个人区域网络包括多个节点。 该方法包括在节点处接收帧，确定节点是否包含用于帧目的地的路由表条目，以及当节点包含路由表条目时，基于第一路由协议来确定该帧的路由。 该方法还包括：当节点不包含用于帧目的地的路由表条目时，确定是否应为帧目的地发现路由，并且当不发现路由时，基于 第二路由协议。