公开(公告)号：US20080247442A1

公开(公告)日：2008-10-09

申请号：US11995996

申请日：2005-07-18

申请人： Philip V. Orlik ,  Andreas F. Molisch ,  Shiwei Zhao

发明人： Philip V. Orlik ,  Andreas F. Molisch ,  Shiwei Zhao

IPC分类号： H04B1/69

CPC分类号： H04L1/006 ,  H04B1/7172 ,  H04L1/005

摘要： A method, apparatus, and system for modulating and demodulating signals compatible with multiple receiver types and designed for improved receiver performance. The invention includes the use of hybrid impulse radio (H-IR) ultra-wideband (UWB) with forward error correction coding, recursive modulation and other techniques designed to enable one transmitter to transmit a waveform capable of being demodulated concurrently by a coherent receiver, a differentially coherent receiver, and/or a non-coherent receiver.

摘要翻译： 一种用于调制和解调与多种接收机类型兼容的信号并被设计用于改善接收机性能的方法，装置和系统。 本发明包括使用具有前向纠错编码，递归调制和其他技术的混合脉冲无线电（H-IR）超宽带（UWB），其被设计成使一个发射机能够通过相干接收机同时发送能够被解调的波形， 差分相干接收机和/或非相干接收机。

公开(公告)号：US08498544B2

公开(公告)日：2013-07-30

申请号：US13024769

申请日：2011-02-10

申请人： Chunjie Duan ,  Kieran Parsons ,  Philip V. Orlik

发明人： Chunjie Duan ,  Kieran Parsons ,  Philip V. Orlik

IPC分类号： H04B10/00

CPC分类号： G06F7/5057 ,  G06F7/5443 ,  H03M13/1111 ,  H03M13/658 ,  H04B10/6165 ,  H04L9/3218 ,  H04L2209/46 ,  H04L2209/50

摘要： A method and an optical receiver compensates for an error in a phase of an optical signal in a receiver. The signal includes blocks of symbols in a sequence. Each block is decoded based on a partially phase compensated symbols, and an average phase error for the block is estimated. Forward phase compensation and backward phase compensation is performed on the block based on the average phase error, and the decoding, estimating, performing is iterated until a termination condition is satisfied to produce a phase compensated block.

摘要翻译： 一种方法和光学接收机补偿接收机中光信号的相位中的误差。 信号包括序列中的符号块。 基于部分相位补偿的符号对每个块进行解码，并且估计块的平均相位误差。 基于平均相位误差对块进行正向相位补偿和反相补偿，迭代解码，估计执行直到满足终止条件以产生相位补偿块。

公开(公告)号：US08418813B2

公开(公告)日：2013-04-16

申请号：US12950683

申请日：2010-11-19

申请人： Raymond Yim ,  Philip V. Orlik ,  Chunjie Duan ,  Jinyun Zhang ,  Jianlin Guo ,  Frederick J Igo, Jr.

发明人： Raymond Yim ,  Philip V. Orlik ,  Chunjie Duan ,  Jinyun Zhang ,  Jianlin Guo ,  Frederick J Igo, Jr.

IPC分类号： B66B1/28

CPC分类号： B66B1/34 ,  B66B5/0031 ,  B66B13/22

摘要： In a network for a safety system in a transportation system, the transportation system includes a shaft and a car arranged in the shaft. A first wall node is at a first end of the shaft and a second wall node is at a second end of the shaft to communicate safety messages with the car. Each wall node includes at least one wireless transceiver connected to one or more antennas. Each car in the shaft includes at least two wireless transceiver connected to one or more antennas, wherein the first transceiver of the car uses a first frequency and the second transceiver of the car uses a second frequency to communicate each safety messages in duplicate. A wired backbone connects the set of wall nodes to a controller of the safety system of the transportation system.

摘要翻译： 在用于运输系统中的安全系统的网络中，运输系统包括布置在轴中的轴和轿厢。 第一壁节点位于轴的第一端，并且第二壁节点位于轴的第二端，以将安全信息与轿厢通信。 每个墙壁节点包括连接到一个或多个天线的至少一个无线收发器。 轴中的每个汽车包括连接到一个或多个天线的至少两个无线收发器，其中汽车的第一收发器使用第一频率，并且汽车的第二收发器使用第二频率来重复地传送每个安全消息。 有线骨干将该组墙壁节点连接到运输系统的安全系统的控制器。

公开(公告)号：US08290074B2

公开(公告)日：2012-10-16

申请号：US12691291

申请日：2010-01-21

申请人： Ramesh Annavajjala ,  Philip V. Orlik ,  Jinyun Zhang

发明人： Ramesh Annavajjala ,  Philip V. Orlik ,  Jinyun Zhang

IPC分类号： H04K1/10

CPC分类号： H04L27/2697

摘要： In an orthogonal frequency division multiplexing (OFDM) network, a set of pseudo random sequences (PRS) are stored at a transmitter and a receiver. Each OFDM symbol is mapped to subcarriers for a set of transmit antennas to produce a mapped symbol. The mapped symbol is encoded using a pseudo-random phase precoder (PRPP) and the PRS to produce a precoded symbol. An inverse fast Fourier transform (IFFT) is applied to the precoded symbol, and the encoded symbol is transmitted to the receiver using the set of transmit antennas.

摘要翻译： 在正交频分复用（OFDM）网络中，一组伪随机序列（PRS）被存储在发射机和接收机。 每个OFDM符号被映射到一组发射天线的子载波以产生映射符号。 使用伪随机相位预编码器（PRPP）和PRS对映射符号进行编码以产生预编码符号。 将快速傅里叶逆变换（IFFT）应用于预编码符号，并且使用该组发射天线将编码符号发送到接收机。

公开(公告)号：US08284862B2

公开(公告)日：2012-10-09

申请号：US12827591

申请日：2010-06-30

申请人： Ramesh Annavajjala ,  Philip V. Orlik

发明人： Ramesh Annavajjala ,  Philip V. Orlik

IPC分类号： H04L27/36

CPC分类号： H04L5/0023 ,  H04L1/0606 ,  H04L1/0618 ,  H04L5/0048 ,  H04L25/0226 ,  H04L25/03343 ,  H04L27/345 ,  H04L2025/03426

摘要： A set of data symbols is selected from a set of modulation constellation, and a sample-mean of the set of data symbols is determined. Each data symbol is first shifted by the sample-mean to obtain a shifted data symbol, and then the shifted symbol is multiplied by a first constant to obtain a scaled data symbol. A second constant is added to the scaled data symbol to obtain a mapped data symbol. The sample-mean is multiplied by a third constant to obtain a sample-mean mapped symbol. The set of mapped data symbols and the sample-mean mapped symbol are then transmitted as a resource block.

摘要翻译： 从一组调制星座中选择一组数据符号，并且确定该组数据符号的采样均值。 首先将每个数据符号移位采样均值以获得移位的数据符号，然后将移位符号乘以第一常数以获得缩放的数据符号。 将第二常数添加到缩放的数据符号以获得映射的数据符号。 将样本均值乘以第三常数以获得样本均值映射符号。 然后将映射数据符号集合和采样均值映射符号作为资源块发送。

公开(公告)号：US08238277B2

公开(公告)日：2012-08-07

申请号：US12732275

申请日：2010-03-26

申请人： Philip V. Orlik ,  Ron Porat ,  Ramesh Annavajjala ,  Man-On Pun

发明人： Philip V. Orlik ,  Ron Porat ,  Ramesh Annavajjala ,  Man-On Pun

IPC分类号： H04B7/00 ,  H04W4/00

CPC分类号： H04B7/0417 ,  H04B7/0469 ,  H04B7/0626 ,  H04B7/0636 ,  H04B7/0663

摘要： Channel state information in a closed-loop, multiple-input, multiple-output wireless networks is fed back from each mobile station to a base station by first determining a transmit covariance matrix R, and applying a singular value decomposition (SVD) R=UΣVH, where U, V are left and right singular vector matrices, Σ is a diagonal matrix with singular values. The matrix V includes column vectors V. A beamforming vector vmax=[1 exp(jΦ)exp(j2Φ) . . . exp(jΦ)]/√{square root over (N)}] is approximated by the column vector V having a maximum magnitude, where Φ is a real number. Then, only the angle Φ is fed back using a phase modulation mapping of the components exp(jΦ) onto the associated subcarrier.

摘要翻译： 闭环多输入多输出无线网络中的信道状态信息通过首先确定发射协方差矩阵R，从每个移动台反馈到基站，并应用奇异值分解（SVD）R = U＆Sgr ; VH，其中U，V是左和右奇异矢量矩阵，＆Sgr; 是具有奇异值的对角矩阵。 矩阵V包括列向量V.波束形成向量vmax = [1exp（jΦ）exp（j2Φ））。 。 。 exp（jΦ）] /√{平方根（N）}]由具有最大幅度的列向量V近似，其中Φ是实数。 然后，仅使用分量exp（jΦ）的相位调制映射到相关联的子载波上来反馈角度Φ。

公开(公告)号：US20120147879A1

公开(公告)日：2012-06-14

申请号：US12979777

申请日：2010-12-28

申请人： Jianlin Guo ,  Raymond Yim ,  Jinyun Zhang ,  Philip V. Orlik ,  Chunjie Duan ,  Frederick J. Igo, JR.

发明人： Jianlin Guo ,  Raymond Yim ,  Jinyun Zhang ,  Philip V. Orlik ,  Chunjie Duan ,  Frederick J. Igo, JR.

IPC分类号： H04W72/04 ,  H04W56/00

CPC分类号： H04W72/1242

摘要： A hybrid communication network for a transportation safety system includes a fixed wired nodes and mobile wireless nodes. Because the wired nodes operate independently packets transmitted by the wired nodes to the wireless nodes need to be synchronized. A downlink travel time for downlink packets traveling from a controller to the wireless nodes is determined. Then, the controller schedules downlink data intervals (DDI) based on the downlink travel time; and transmits downlink packets to the wireless nodes during the DDI, such that a latency requirement of the transportation safety system is satisfied.

摘要翻译： 用于运输安全系统的混合通信网络包括固定有线节点和移动无线节点。 由于有线节点独立运行，有线节点传输到无线节点的数据包需要同步。 确定从控制器到无线节点的下行链路分组的下行链路行进时间。 然后，控制器基于下行链路行进时间调度下行链路数据间隔（DDI）; 并且在DDI期间向无线节点发送下行链路分组，使得满足运输安全系统的等待时间要求。

公开(公告)号：US20120129458A1

公开(公告)日：2012-05-24

申请号：US12950683

申请日：2010-11-19

申请人： Raymond Yim ,  Philip V. Orlik ,  Chunjie Duan ,  Jinyun Zhang ,  Jianlin Guo ,  Frederick J. Igo, JR.

发明人： Raymond Yim ,  Philip V. Orlik ,  Chunjie Duan ,  Jinyun Zhang ,  Jianlin Guo ,  Frederick J. Igo, JR.

IPC分类号： H04B7/00

CPC分类号： B66B1/34 ,  B66B5/0031 ,  B66B13/22

摘要： In a network for a safety system in a transportation system, the transportation system includes a shaft and a car arranged in the shaft. A first wall node is at a first end of the shaft and a second wall node is at a second end of the shaft to communicate safety messages with the car. Each wall node includes at least one wireless transceiver connected to one or more antennas. Each car in the shaft includes at least two wireless transceiver connected to one or more antennas, wherein the first transceiver of the car uses a first frequency and the second transceiver of the car uses a second frequency to communicate each safety messages in duplicate. A wired backbone connects the set of wall nodes to a controller of the safety system of the transportation system.

摘要翻译： 在用于运输系统中的安全系统的网络中，运输系统包括布置在轴中的轴和轿厢。 第一壁节点位于轴的第一端，并且第二壁节点位于轴的第二端，以将安全信息与轿厢通信。 每个墙壁节点包括连接到一个或多个天线的至少一个无线收发器。 轴中的每个汽车包括连接到一个或多个天线的至少两个无线收发器，其中汽车的第一收发器使用第一频率，并且汽车的第二收发器使用第二频率来重复地传送每个安全消息。 有线骨干将该组墙壁节点连接到运输系统的安全系统的控制器。

公开(公告)号：US08155044B2

公开(公告)日：2012-04-10

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： H04H20/71

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：US08009580B2

公开(公告)日：2011-08-30

申请号：US12117219

申请日：2008-05-08

申请人： Zhifeng Tao ,  Andreas F. Molisch ,  Philip V. Orlik ,  Jinyun Zhang ,  Shigeru Uchida ,  Kentarou Sawa

发明人： Zhifeng Tao ,  Andreas F. Molisch ,  Philip V. Orlik ,  Jinyun Zhang ,  Shigeru Uchida ,  Kentarou Sawa

IPC分类号： H04W4/00

CPC分类号： H04B7/0874 ,  H04B7/063 ,  H04B7/0691 ,  H04L5/0007

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。