公开(公告)号：US08089856B2

公开(公告)日：2012-01-03

申请号：US12420629

申请日：2009-04-08

申请人： Philip V. Orlik ,  Qinghe Du ,  Chunjie Duan ,  Zafer Sahinoglu

发明人： Philip V. Orlik ,  Qinghe Du ,  Chunjie Duan ,  Zafer Sahinoglu

IPC分类号： H04J11/00

CPC分类号： H04L27/2631 ,  H04J13/0055 ,  H04J13/14 ,  H04L27/2613 ,  H04L27/2644 ,  H04L27/2652 ,  H04L27/2663 ,  H04L27/2671 ,  H04L27/2675 ,  H04L27/2692

摘要： In an oversampled orthogonal frequency-division multiplexing (OFDM) orthogonal network, the preamble used for time synchronization does not have an ideal autocorrelation function due to guard bands, which degrade the accuracy of symbol timing. Therefore, a zero-correlation-zone (ZCZ) based preamble is used for time synchronization. Across correlation function (CCF) used for time synchronization is forced to 0 within a certain region around a main lobe. The length of the ZCZ is guaranteed to be larger than a cyclic prefix length of OFDM data symbols synchronization accuracy.

摘要翻译： 在过采样正交频分复用（OFDM）正交网络中，用于时间同步的前导码由于保护频带而不具有理想的自相关函数，这降低了符号定时的精度。 因此，基于零相关区（ZCZ）的前导码用于时间同步。 用于时间同步的相关函数（CCF）在主瓣周围的某个区域内强制为0。 确保ZCZ的长度大于OFDM数据符号同步精度的循环前缀长度。

公开(公告)号：US08014263B2

公开(公告)日：2011-09-06

申请号：US12543671

申请日：2009-08-19

申请人： Zhifeng Tao ,  Philip V. Orlik ,  Jun Ma ,  Ye Li ,  Jinyun Zhang

发明人： Zhifeng Tao ,  Philip V. Orlik ,  Jun Ma ,  Ye Li ,  Jinyun Zhang

IPC分类号： H04J1/12 ,  H04B7/14

CPC分类号： H04B7/15592 ,  H04B7/15564 ,  H04L27/2601

摘要： Cross-talk is canceled in a cooperative wireless relay network that includes a base station (BS), a relay station (RS), and a mobile station (MS). A coupling channel between a transmit antenna and a receive antenna colocated at the RS is estimated. Cross-talk interference determination is based on a previous transmitted signal by the transmit antenna, and the coupling channel. The cross-talk interference is subtracted from a currently received signal by the receive antenna to obtain a residual signal. The residual signal is then transmitted as a next transmitted signal by the transmit antenna.

摘要翻译： 在包括基站（BS），中继站（RS）和移动站（MS）的协作无线中继网络中，串扰被取消。 估计发射天线与在RS共同定位的接收天线之间的耦合信道。 串扰干扰确定基于发射天线的先前发射信号和耦合信道。 由接收天线从当前接收到的信号中减去串扰干扰，以获得残留信号。 然后由发射天线作为下一个发射信号发送残余信号。

公开(公告)号：US07995644B2

公开(公告)日：2011-08-09

申请号：US12089744

申请日：2005-11-10

申请人： Zafer Sahinoglu ,  Philip V. Orlik ,  Andreas F. Molisch

发明人： Zafer Sahinoglu ,  Philip V. Orlik ,  Andreas F. Molisch

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。

公开(公告)号：US20100246703A1

公开(公告)日：2010-09-30

申请号：US12503465

申请日：2009-07-15

申请人： Philip V. Orlik ,  Lu Zhang ,  Raymond Yim ,  Jinyun Zhang

发明人： Philip V. Orlik ,  Lu Zhang ,  Raymond Yim ,  Jinyun Zhang

IPC分类号： H04L23/02

CPC分类号： H04L1/065 ,  H04L1/0003 ,  H04L25/0212 ,  H04L25/0226

摘要： A transmitter encodes an input bitstream using space-time trellis coding (STTC). The encoder includes a serial to parallel convertor to produce a first and second output bitstreams. First and second three bit shift registers are connected to produce first and second output bitstreams. A multiplier applies a code generating weight to each bit of the shift registers to encode the bitstreams. A first switch is connected between a last bit of the first shift register and a first bit of the second shift register. A second switch is connected between the second output and the first bit of the second shift register. The first set of encoded bit streams and the second set of encoded bitstreams are combined and mapped to a frequency domain.

摘要翻译： 发射机使用空时网格编码（STTC）对输入比特流进行编码。 编码器包括串行到并行转换器以产生第一和第二输出比特流。 连接第一和第二三位移位寄存器以产生第一和第二输出比特流。 乘法器将代码生成权重应用于移位寄存器的每个位以对比特流进行编码。 第一开关连接在第一移位寄存器的最后位和第二移位寄存器的第一位之间。 第二开关连接在第二输出端和第二移位寄存器的第一位之间。 第一组编码比特流和第二组编码比特流被组合并映射到频域。

公开(公告)号：US20100182982A1

公开(公告)日：2010-07-22

申请号：US12357157

申请日：2009-01-21

申请人： Raymond Yim ,  Jianlin Guo ,  Philip V. Orlik

发明人： Raymond Yim ,  Jianlin Guo ,  Philip V. Orlik

IPC分类号： H04W74/08

CPC分类号： H04W72/1242 ,  H04W4/06 ,  H04W64/006 ,  H04W88/04

摘要： A method and system broadcasts an alert packet in a wireless multi-hop network of nodes. An event is sensed in a source node of the network, and an alert packet is broadcast in response to sensing the event. The alert packet is received in a set of candidate nodes within a broadcast range of the source node. Each candidate node infers a distance between the candidate node and the source node based on a receive power of the received alert packet, and determines a priority for rebroadcasting the alert packet, wherein the priority is based on the distance to minimizing a probability of collisions while rebroadcasting the alert packet and extend a range of the rebroadcasting.

摘要翻译： 方法和系统在节点的无线多跳网络中广播警报分组。 在网络的源节点中感测到事件，并且响应于感测到事件来广播警报分组。 警报包在源节点的广播范围内的一组候选节点中被接收。 每个候选节点基于所接收的报警分组的接收功率来推测候选节点和源节点之间的距离，并且确定重新广播报警分组的优先级，其中优先级基于最小化冲突概率的距离，而 重新广播警报包并扩展一个范围的转播。

公开(公告)号：US20090286471A1

公开(公告)日：2009-11-19

申请号：US12120332

申请日：2008-05-14

申请人： Jun Ma ,  Jinyun Zhang ,  Philip V. Orlik

发明人： Jun Ma ,  Jinyun Zhang ,  Philip V. Orlik

IPC分类号： H04B1/62

CPC分类号： H04W52/46 ,  H04B7/2606 ,  H04W52/225 ,  H04W52/242

摘要： Disclosed is a method for static power allocation to source and relay stations in a two-hop amplify-and-forward (AF) relay multi-input-multi-output (MIMO) network including of a source station (SS), a relay station (RS), and a destination station (DS) each transmitting signals using multiple antennas. The method performs power allocation to the SS and the RS according to the path loss, or equivalently, according to a distances, between the SS and the RS and the RS and DS. The transmit power of each transmit antenna at the SS and the power amplifying gain of the RS are determined from the power allocation outputs.

摘要翻译： 本发明公开了一种在双跳放大转发（AF）中继多输入多输出（MIMO）网络中对源和中继站进行静态功率分配的方法，包括源站（SS），中继站 （RS）和每个使用多个天线发送信号的目的地站（DS）。 该方法根据路径损耗对SS和RS进行功率分配，或等效地根据SS与RS之间的距离以及RS和DS进行功率分配。 根据功率分配输出确定SS处的每个发射天线的发射功率和RS的功率放大增益。

公开(公告)号：US20090262852A1

公开(公告)日：2009-10-22

申请号：US12212609

申请日：2008-09-17

申请人： Philip V. Orlik ,  Wataru Matsumoto ,  Andreas F. Molisch ,  Zhifeng Tao ,  Jinyun Zhang

发明人： Philip V. Orlik ,  Wataru Matsumoto ,  Andreas F. Molisch ,  Zhifeng Tao ,  Jinyun Zhang

IPC分类号： H04B7/02

CPC分类号： H04L1/1816 ,  H04L1/0606 ,  H04L1/0631 ,  H04L1/0662 ,  H04L1/1819 ,  H04L1/1845

摘要： A method transmits a sequence of symbols in a multiple-input multiple-output (MIMO) network including a transmitter having a set of transmit antennas and a receiver having a set of receive antennas. The sequence of symbols is represented by a vector S=[S1 S2 S3 S4]T of individual symbols, where T is a transpose operator. The individual symbols are transmitted as a transmit matrix S = [ S 1 - S 2 * S 1 - S 2 * S 2 S 1 * S 2 S 1 * S 3 - S 4 * - S 3 S 4 * S 4 S 3 * - S 4 - S 3 * ] , where * is a complex conjugate, and wherein each column of the matrix S represents the symbols transmitted at each transmission interval, and subscripts index the set of transmit antennas.

摘要翻译： 一种方法在包括具有一组发射天线的发射机和具有一组接收天线的接收机的多输入多输出（MIMO）网络中发送符号序列。 符号序列由单个符号的矢量S = [S1 S2 S3 S4] T表示，其中T是转置运算符。 各个符号作为发送矩阵发送S = [S 1 -S 2 * S 1 -S 2 * S 2 S 1 * S 2 S 1 * S 3 -S 4 * -S 3 S 4 * S 4 S 3 * - S 4 -S 3 *]，其中*是复共轭，并且其中矩阵S的每列表示在每个传输间隔处发送的符号，下标索引发射天线集合。

公开(公告)号：US20090180459A1

公开(公告)日：2009-07-16

申请号：US12240164

申请日：2008-09-29

申请人： Philip V. Orlik ,  Andreas F. Molisch ,  Zhifeng Tao ,  Jinyun Zhang

发明人： Philip V. Orlik ,  Andreas F. Molisch ,  Zhifeng Tao ,  Jinyun Zhang

IPC分类号： H04B7/208 ,  H04L27/28

CPC分类号： H04L5/0094 ,  H04L5/0007 ,  H04L5/0037 ,  H04L5/0044 ,  H04L5/0089

摘要： A method communicates symbols in a cell of a multiple-input multiple-output (MIMO) network that includes a set of mobile station and a base station. The symbols are communicated using orthogonal frequency division multiplexing (OFDM) and time division duplex (TDM). A frame for communicating the symbols between the base station and the mobile station is constructed. The frame is partitioned into a downlink subframe and an uplink subframe. The uplink subframe is partitioned into a first zone and a second zone, wherein the first zone uses orthogonal frequency division multiple access (OFDMA) and the second zone uses single carrier frequency division multiple access (SC-FDMA).

摘要翻译： 一种方法在包括一组移动台和基站的多输入多输出（MIMO）网络的小区中传送符号。 使用正交频分复用（OFDM）和时分双工（TDM）来传送符号。 构建用于在基站和移动站之间传送符号的帧。 帧被划分为下行链路子帧和上行链路子帧。 上行链路子帧被划分为第一区域和第二区域，其中第一区域使用正交频分多址（OFDMA），第二区域使用单载波频分多址（SC-FDMA）。

公开(公告)号：US20090117911A1

公开(公告)日：2009-05-07

申请号：US11934131

申请日：2007-11-02

申请人： Andreas F. Molisch ,  Lun Dong ,  Philip V. Orlik ,  Jinyun Zhang

发明人： Andreas F. Molisch ,  Lun Dong ,  Philip V. Orlik ,  Jinyun Zhang

IPC分类号： H04Q7/20

CPC分类号： H04B7/0678 ,  H04B7/024 ,  H04B7/043 ,  H04B7/0443

摘要： The embodiments of the invention provide an adaptive method for base station cooperation in a wireless network. In a multi-user communications network that includes base stations, and in which each base station is associated with a cell, and in which each cell includes one or more mobile stations, each base station determines pre-coding matrices for full-cooperation, semi-cooperation and non-cooperation. Each base stations also determines a sum rate SRfull for full-cooperation, a sum rate SRsemi semi-cooperation, and a sum rate SRnon for non-cooperation. Then, each base station selects the pre-coding for full-cooperation, the pre-coding matrices for semi cooperation, or the pre-coding matrices for non cooperation. Each base station transmits signals according to the selected per-coding matrices.

摘要翻译： 本发明的实施例提供了一种用于无线网络中的基站协作的自适应方法。 在包括基站并且其中每个基站与小区相关联并且每个小区包括一个或多个移动站的多用户通信网络中，每个基站确定用于全协作的预编码矩阵，半 合作不合作。 每个基站还确定全面合作的总和速率，SRsemi半合作率和非合作的总和速率SRnon。 然后，每个基站选择用于全协作的预编码，用于半合作的预编码矩阵，或者用于非合作的预编码矩阵。 每个基站根据所选择的每个编码矩阵发送信号。

公开(公告)号：US20090091400A1

公开(公告)日：2009-04-09

申请号：US12160168

申请日：2006-01-11

申请人： Philip V. Orlik ,  Andreas F. Molisch ,  Zafer Sahinoglu

发明人： Philip V. Orlik ,  Andreas F. Molisch ,  Zafer Sahinoglu

IPC分类号： H03C3/00 ,  H03K7/04

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。