公开(公告)号：US08433205B2

公开(公告)日：2013-04-30

申请号：US13086020

申请日：2011-04-13

申请人： Toshiaki Koike-Akino ,  Philip V. Orlik ,  Kieran Parsons

发明人： Toshiaki Koike-Akino ,  Philip V. Orlik ,  Kieran Parsons

IPC分类号： H04B10/04 ,  H04B10/08 ,  H04B10/00 ,  H04B10/12 ,  H04J14/00

CPC分类号： H04J14/06 ,  H04B10/5055 ,  H04B10/532 ,  H04J14/02

摘要： A method reduces time-varying polarization crosstalk due to XPolM by transmitting multi-dimensional orthogonal constellations. Three variants of crosstalk-free constellations are provided: Grassmann constellations, unitary constellations, and rotation codes. The method uses the Grassmann constellations and the unitary constellations to deal with fiber nonlinearity by applying as a polarization-time coding. The rotation codes exploit a fiber channel characteristic to improve performance and to reduce computational complexity. The underlying orthogonality behind those constellations enables the receiver to decode it as if there is no polarization crosstalk. Moreover, the required computational complexity at the receiver is significantly reduced because neither crosstalk cancellers nor channel estimators are needed.

摘要翻译： 一种方法通过传输多维正交星座来减少XPolM引起的时变极化串扰。 提供了无串扰星座的三种变体：Grassmann星座，酉星座和旋转码。 该方法使用Grassmann星座和单一星座通过应用极化时间编码来处理光纤非线性。 旋转码利用光纤通道特性来提高性能并降低计算复杂度。 这些星座背后的基础正交性使得接收机能够将其解码为好像没有偏振串扰。 此外，接收机所需的计算复杂度显着降低，因为不需要串扰消除器和信道估计器。

公开(公告)号：US20120263454A1

公开(公告)日：2012-10-18

申请号：US13086020

申请日：2011-04-13

申请人： Toshiaki Koike-Akino ,  Philip V. Orlik ,  Kieran Parsons

发明人： Toshiaki Koike-Akino ,  Philip V. Orlik ,  Kieran Parsons

IPC分类号： H04B10/00 ,  H04B10/12 ,  H04B10/08 ,  H04J14/02

CPC分类号： H04J14/06 ,  H04B10/5055 ,  H04B10/532 ,  H04J14/02

摘要： A method reduces time-varying polarization crosstalk due to XPolM by transmitting multi-dimensional orthogonal constellations. Three variants of crosstalk-free constellations are provided: Grassmann constellations, unitary constellations, and rotation codes. The method uses the Grassmann constellations and the unitary constellations to deal with fiber nonlinearity by applying as a polarization-time coding. The rotation codes exploit a fiber channel characteristic to improve performance and to reduce computational complexity. The underlying orthogonality behind those constellations enables the receiver to decode it as if there is no polarization crosstalk. Moreover, the required computational complexity at the receiver is significantly reduced because neither crosstalk cancellers nor channel estimators are needed.

摘要翻译： 一种方法通过传输多维正交星座来减少XPolM引起的时变极化串扰。 提供了无串扰星座的三种变体：Grassmann星座，酉星座和旋转码。 该方法使用Grassmann星座和单一星座通过应用极化时间编码来处理光纤非线性。 旋转码利用光纤通道特性来提高性能并降低计算复杂度。 这些星座背后的基础正交性使得接收机能够将其解码为好像没有偏振串扰。 此外，接收机所需的计算复杂度显着降低，因为不需要串扰消除器和信道估计器。

公开(公告)号：US20120183020A1

公开(公告)日：2012-07-19

申请号：US13007523

申请日：2011-01-14

申请人： Toshiaki Koike-Akino ,  Philip V. Orlik

发明人： Toshiaki Koike-Akino ,  Philip V. Orlik

IPC分类号： H04W40/00

CPC分类号： H04L1/0034 ,  H04L1/0038 ,  H04L1/006 ,  H04L1/0077 ,  H04L1/0625 ,  H04L2001/0097

摘要： This invention provides a method for jointly optimizing network coding, channel coding, and signal constellations in non-coherent wireless multiple-input multiple-output (MIMO) wireless relay networks for the case when transceivers cannot obtain any knowledge of channel state information (CSI) due to high-speed mobility of the transceivers. In the relay networks, two terminal transceivers simultaneously transmit data to an intermediate relaying transceiver, which in turn broadcasts mixed data using physical-layer network coding to both terminals. The embodiments of this invention exploit different blind space-time trellis-coded modulations (ST-TCM) for each user, whose codebook is jointly generated over a Grassmannian manifold. The method is provided by exponential mapping with affine-lattice convolution for joint optimization of channel coding, modulations, and network coding. The method is designed for fast fading channels with and without interleaving. The method significantly improves performance in non-coherent bidirectional relaying MIMO networks.

摘要翻译： 本发明提供了一种用于在收发机不能获得信道状态信息（CSI）的任何知识的情况下联合优化非相干无线多输入多输出（MIMO）无线中继网络中的网络编码，信道编码和信号星座的方法， 由于收发器的高速移动性。 在中继网络中，两个终端收发器同时向中间中继收发器发送数据，中继中继收发机又将物理层网络编码的混合数据广播到两个终端。 本发明的实施例针对每个用户利用不同的盲时空网格编码调制（ST-TCM），其码本通过Grassmannian流形共同生成。 该方法通过用仿射网格卷积的指数映射提供，用于信道编码，调制和网络编码的联合优化。 该方法设计用于具有和不具有交织的快速衰落信道。 该方法显着提高了非相干双向中继MIMO网络中的性能。

公开(公告)号：US08553792B2

公开(公告)日：2013-10-08

申请号：US13007523

申请日：2011-01-14

申请人： Toshiaki Koike-Akino ,  Philip V. Orlik

发明人： Toshiaki Koike-Akino ,  Philip V. Orlik

IPC分类号： H04L23/02

CPC分类号： H04L1/0034 ,  H04L1/0038 ,  H04L1/006 ,  H04L1/0077 ,  H04L1/0625 ,  H04L2001/0097

摘要： This invention provides a method for jointly optimizing network coding, channel coding, and signal constellations in non-coherent wireless multiple-input multiple-output (MIMO) wireless relay networks for the case when transceivers cannot obtain any knowledge of channel state information (CSI) due to high-speed mobility of the transceivers. In the relay networks, two terminal transceivers simultaneously transmit data to an intermediate relaying transceiver, which in turn broadcasts mixed data using physical-layer network coding to both terminals. The embodiments of this invention exploit different blind space-time trellis-coded modulations (ST-TCM) for each user, whose codebook is jointly generated over a Grassmannian manifold. The method is provided by exponential mapping with affine-lattice convolution for joint optimization of channel coding, modulations, and network coding. The method is designed for fast fading channels with and without interleaving. The method significantly improves performance in non-coherent bidirectional relaying MIMO networks.

摘要翻译： 本发明提供了一种用于在收发机不能获得信道状态信息（CSI）的任何知识的情况下联合优化非相干无线多输入多输出（MIMO）无线中继网络中的网络编码，信道编码和信号星座的方法， 由于收发器的高速移动性。 在中继网络中，两个终端收发器同时向中间中继收发器发送数据，中继中继收发机又将物理层网络编码的混合数据广播到两个终端。 本发明的实施例针对每个用户利用不同的盲时空网格编码调制（ST-TCM），其码本通过Grassmannian流形共同生成。 该方法通过用仿射网格卷积的指数映射提供，用于信道编码，调制和网络编码的联合优化。 该方法设计用于具有和不具有交织的快速衰落信道。 该方法显着提高了非相干双向中继MIMO网络中的性能。

公开(公告)号：US20120170684A1

公开(公告)日：2012-07-05

申请号：US12982636

申请日：2010-12-30

申请人： Raymond Yim ,  Amitav Mukherjee ,  Philip V. Orlik ,  Chunjie Duan ,  Jinyun Zhang

发明人： Raymond Yim ,  Amitav Mukherjee ,  Philip V. Orlik ,  Chunjie Duan ,  Jinyun Zhang

IPC分类号： H04B1/06

CPC分类号： H04L25/0204 ,  H04L25/0228 ,  H04L25/03159

摘要： A method estimates a wireless channel at a receiver. The signal is transmitted using narrowband orthogonal frequency division demultiplexing (OFDM) and frequency subcarriers, and the signal includes a set of data tones and a set of pilot tones. The channel and pilot tone interference are estimated based on all the pilot tones extracted from the signal and a channel model. The set of data are equalized based on the channel estimate. Data interference is detected according to the pilot interference and the equalized data tones. Subcarrier interference-to-noise ratios are determined based on the data interference. Signal strengths of the data tones are determined based on the equalized data tones, log-likelihood ratios of bits represented by the data tones are determined based on the subcarrier interference-to-noise ratios and the signal strength of the data tones.

摘要翻译： 一种方法估计接收机处的无线信道。 该信号使用窄带正交频分解复用（OFDM）和频率副载波来发送，并且该信号包括一组数据音调和一组导频音。 基于从信号提取的所有导频音和信道模型来估计信道和导频音干扰。 该数据集合基于信道估计来均衡。 根据导频干扰和均衡数据音调检测数据干扰。 基于数据干扰确定子载波干扰噪声比。 基于均衡的数据音调确定数据音调的信号强度，基于副载波干扰信噪比和数据音调的信号强度来确定由数据音调表示的比特的对数似然比。

公开(公告)号：US08139668B2

公开(公告)日：2012-03-20

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： H04L5/12 ,  H04B7/02 ,  H03C7/02

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：US08023915B2

公开(公告)日：2011-09-20

申请号：US12413868

申请日：2009-03-30

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

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

IPC分类号： H04B1/06 ,  H04B7/00

CPC分类号： H04B7/0617 ,  H04B7/086

摘要： Beams are used to communicate in a wireless network including mobile and stationary receivers. The network operates according to the IEEE 802.11p in wireless access to vehicular environments (WAVE). A direction from the mobile transceiver to the stationary receiver is predicted using geographic information available to the mobile transceiver. A set of signals are received in the mobile transceiver from the stationary transceiver, wherein the signals are received by an array of antennas, and wherein the signals are received using a set of beams, and wherein each beam is approximately directed at the stationary receiver. A signal-to-noise ratio (SNR) is measured for each beam, and the beam with an optimal SNR is selected as an optimal beam for communicating data between the mobile transceiver and the stationary transceiver.

摘要翻译： 光束用于在包括移动和固定接收机的无线网络中进行通信。 该网络根据IEEE 802.11p在无线接入车辆环境（WAVE）中运行。 使用可用于移动收发机的地理信息来预测从移动收发机到固定接收机的方向。 在固定收发器中的移动收发器中接收一组信号，其中信号由天线阵列接收，并且其中使用一组波束接收信号，并且其中每个波束近似地指向固定接收机。 测量每个波束的信噪比（SNR），并且选择具有最佳SNR的波束作为用于在移动收发器和固定收发器之间传送数据的最佳波束。

公开(公告)号：US20110129234A1

公开(公告)日：2011-06-02

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： H04B10/06

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：US07826853B2

公开(公告)日：2010-11-02

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： H04W72/00

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 for 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 pre-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，半合作的总和SRsemi和不合作的总和速率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。 每个基站根据选择的预编码矩阵发送信号。

公开(公告)号：US20100272014A1

公开(公告)日：2010-10-28

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： H04W40/00

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。