公开(公告)号：US08775144B2

公开(公告)日：2014-07-08

申请号：US13323060

申请日：2011-12-12

申请人： Choongyong Han ,  John Wallis ,  Pallav Sarma ,  Gary Li ,  Mark Schrader ,  Wen Chen

发明人： Choongyong Han ,  John Wallis ,  Pallav Sarma ,  Gary Li ,  Mark Schrader ,  Wen Chen

IPC分类号： G06G7/48 ,  G06F17/12

CPC分类号： G06F17/12

摘要： A method, system and computer program product is disclosed for using a constrained pressure residual (CPR) preconditioner to solve adjoint models. A linear system of fluid flow equations comprising a plurality of variables that represent fluid flow properties in a geological formation of a subterranean reservoir is provided. Matrix (Ã)T, which comprises a transpose of a Jacobian matrix associated with the linear system of fluid flow equations, is constructed. A constrained pressure residual preconditioner MCPRA−1 is constructed responsive to the matrix (Ã)T. Matrix equation (Ã)Ty=d is then solved using the constrained pressure residual preconditioner MCPRA−1.

摘要翻译： 公开了一种使用约束压力残差（CPR）预处理器来解决伴随模型的方法，系统和计算机程序产品。 提供了包括表示地下储层地质构造中的流体流动特性的多个变量的流体流动方程的线性系统。 构造了包括与流体流动方程的线性系统相关联的雅可比矩阵的转置的矩阵（Ã）T。 受约束的压力残余预处理器MCPRA-1是响应于矩阵（Ã）T构建的。 使用约束压力残余预处理器MCPRA-1求解矩阵方程（Ã）Ty = d。

公开(公告)号：US08972232B2

公开(公告)日：2015-03-03

申请号：US13029534

申请日：2011-02-17

申请人： Pallav Sarma ,  Wen Chen

发明人： Pallav Sarma ,  Wen Chen

IPC分类号： G06G7/48 ,  G06G7/50 ,  G01V99/00

CPC分类号： G01V99/005 ,  G01V1/308

摘要： A computer-implemented reservoir prediction system, method, and software are provided for updating simulation models of a subterranean reservoir. An ensemble of reservoir models representing a subterranean reservoir having non-Gaussian characteristics is provided, along with reservoir data from the subterranean reservoir used to condition the ensemble of reservoir models. For each of the reservoir models in the ensemble of reservoir models, a constrained optimization with equality constraints and inequality constraints are solved using a constrained Kernel Ensemble Kalman Filter to obtain a constrained optimal solution. The constrained optimal solutions are assembled to update the ensemble of reservoir models. The updated ensemble of reservoir models are consistent with the reservoir data provided from the subterranean reservoir and the non-Gaussian characteristics of the subterranean reservoir are preserved.

摘要翻译： 提供了一种计算机实现的储层预测系统，方法和软件，用于更新地下储层的模拟模型。 提供了代表具有非高斯特征的地下储层的储层模型的集合，以及来自用于调节储层模型集合的地下储层的储层数据。 对于储层模型集合中的每个储层模型，使用约束Kernel Ensemble Kalman滤波器来解决具有等式约束和不等式约束的约束优化，以获得约束最优解。 组合约束的最优解被更新油藏模型的集合。 储层模型的更新集合与从地下储层提供的储集层数据一致，并保留了地下储层的非高斯特征。

公开(公告)号：US20120215511A1

公开(公告)日：2012-08-23

申请号：US13029534

申请日：2011-02-17

申请人： Pallav Sarma ,  Wen Chen

发明人： Pallav Sarma ,  Wen Chen

IPC分类号： G06G7/48

CPC分类号： G01V99/005 ,  G01V1/308

摘要： A computer-implemented reservoir prediction system, method, and software are provided for updating simulation models of a subterranean reservoir. An ensemble of reservoir models representing a subterranean reservoir having non-Gaussian characteristics is provided, along with reservoir data from the subterranean reservoir used to condition the ensemble of reservoir models. For each of the reservoir models in the ensemble of reservoir models, a constrained optimization with equality constraints and inequality constraints are solved using a constrained Kernel Ensemble Kalman Filter to obtain a constrained optimal solution. The constrained optimal solutions are assembled to update the ensemble of reservoir models. The updated ensemble of reservoir models are consistent with the reservoir data provided from the subterranean reservoir and the non-Gaussian characteristics of the subterranean reservoir are preserved.

摘要翻译： 提供了一种计算机实现的储层预测系统，方法和软件，用于更新地下储层的模拟模型。 提供了代表具有非高斯特征的地下储层的储层模型的集合，以及来自用于调节储层模型集合的地下储层的储层数据。 对于储层模型集合中的每个储层模型，使用约束Kernel Ensemble Kalman滤波器来解决具有等式约束和不等式约束的约束优化，以获得约束最优解。 组合约束的最优解被更新油藏模型的集合。 储层模型的更新集合与从地下储层提供的储集层数据一致，并保留了地下储层的非高斯特征。

公开(公告)号：US20120150506A1

公开(公告)日：2012-06-14

申请号：US13323060

申请日：2011-12-12

申请人： Choongyong Han ,  John Wallis ,  Pallav Sarma ,  Gary Li ,  Mark Schrader ,  Wen Chen

发明人： Choongyong Han ,  John Wallis ,  Pallav Sarma ,  Gary Li ,  Mark Schrader ,  Wen Chen

IPC分类号： G06F17/11 ,  G06G7/57 ,  G06F17/16

CPC分类号： G06F17/12

摘要： A method, system and computer program product is disclosed for using a constrained pressure residual (CPR) preconditioner to solve adjoint models. A linear system of fluid flow equations comprising a plurality of variables that represent fluid flow properties in a geological formation of a subterranean reservoir is provided. Matrix (Ã)T, which comprises a transpose of a Jacobian matrix associated with the linear system of fluid flow equations, is constructed. A constrained pressure residual preconditioner MCPRA−1 is constructed responsive to the matrix (Ã)T. Matrix equation (Ã)Ty=d is then solved using the constrained pressure residual preconditioner MCPRA−1.

摘要翻译： 公开了一种使用约束压力残差（CPR）预处理器来解决伴随模型的方法，系统和计算机程序产品。 提供了包括表示地下储层地质构造中的流体流动特性的多个变量的流体流动方程的线性系统。 构造了包括与流体流动方程的线性系统相关联的雅可比矩阵的转置的矩阵（Ã）T。 受约束的压力残余预处理器MCPRA-1是响应于矩阵（Ã）T构建的。 使用约束压力残余预处理器MCPRA-1求解矩阵方程（Ã）Ty = d。

公开(公告)号：USD971011S1

公开(公告)日：2022-11-29

申请号：US29819768

申请日：2021-12-17

申请人： Wen Chen

设计人： Wen Chen

公开(公告)号：USD775927S1

公开(公告)日：2017-01-10

申请号：US29515333

申请日：2015-01-22

申请人： Wen Chen

设计人： Wen Chen

公开(公告)号：US08321747B2

公开(公告)日：2012-11-27

申请号：US12669277

申请日：2008-06-19

申请人： Dong Bai ,  Tao Tao ,  Qun Li ,  Ju Ma ,  Qinghua Yang ,  Qiusheng Wang ,  Ruirui Ye ,  Wen Chen ,  Xiaowei Cao ,  Hongbing Shen

发明人： Dong Bai ,  Tao Tao ,  Qun Li ,  Ju Ma ,  Qinghua Yang ,  Qiusheng Wang ,  Ruirui Ye ,  Wen Chen ,  Xiaowei Cao ,  Hongbing Shen

IPC分类号： H03M13/00

CPC分类号： H03M13/1137 ,  H03M13/1105

摘要： An efficient general QC-LDPC code decoder includes a general-purpose processor for distributing the storage storage space of the data memory block, and establishing an index for data addressing; a data memory block for storing the information used during decoding; a hardware accelerator for conducting part or all of the information processing operations including parity check, check node updating and variable node updating. A corresponding QC-LDPC code decoding method includes initializing the variable node information and performing parity check on the check matrix row block by row block; updating the check node row block by row block and updating the variable node column block by column block if any check equation is not met.

摘要翻译： 有效的一般QC-LDPC码解码器包括用于分配数据存储块的存储空间的通用处理器，以及建立用于数据寻址的索引; 用于存储在解码期间使用的信息的数据存储块; 用于进行部分或全部信息处理操作的硬件加速器，包括奇偶校验，校验节点更新和可变节点更新。 对应的QC-LDPC码解码方法包括初始化可变节点信息，并按行块对校验矩阵行进行奇偶校验; 按行块更新校验节点行块，并且如果不满足任何检验方程，则按列块更新变量节点列。

公开(公告)号：US08139622B2

公开(公告)日：2012-03-20

申请号：US12446076

申请日：2006-11-16

申请人： Junwei Wang ,  Qihong Ge ,  Tao Tao ,  Dong Bai ,  Wen Chen ,  Qinghua Yang ,  Qun Li

发明人： Junwei Wang ,  Qihong Ge ,  Tao Tao ,  Dong Bai ,  Wen Chen ,  Qinghua Yang ,  Qun Li

IPC分类号： H04B1/00

CPC分类号： H04J13/102 ,  H04B1/7075 ,  H04B1/709 ,  H04J13/0025 ,  H04J13/0051

摘要： A system and method for generating and detecting identifier sequence of a bandwidth-limited transmitter are disclosed, comprising an identifier sequence generating portion and a detection portion. The identifier sequence generating portion comprises: generating a frequency-domain random sequence; generating a frequency-domain orthogonal sequence; performing frequency-domain truncation; performing frequency-time transformation; and performing cycle extension. The identifier sequence receiving portion comprises: truncating the time-domain for the received signal; performing time-frequency domain transformation to obtain a frequency-domain signal; generating frequency-domain random sequence; generating a frequency-domain orthogonal sequence; correlating the frequency-domain orthogonal sequence with the frequency-domain signal de-scrambled by the frequency-domain random sequence; and detecting an output from a frequency-domain correlator by a threshold detecting device and determining the transmitter identifier sequence. The random sequence bandwidth generated by the system and the method of the present invention can be configured flexibly according to transmission bandwidth requirement, and the sequence may be arbitrarily allocated at the power of each frequency point inside the bandwidth. The present invention may be widely applied to multimedia broadcasting, terrestrial radio broadcasting, cable broadcasting and the like.

摘要翻译： 公开了一种用于产生和检测带宽限制发射机的标识符序列的系统和方法，包括标识符序列产生部分和检测部分。 标识符序列生成部分包括：产生频域随机序列; 产生频域正交序列; 执行频域截断; 执行频率 - 时间变换; 并执行循环扩展。 标识符序列接收部分包括：截断接收信号的时域; 执行时频域变换以获得频域信号; 产生频域随机序列; 产生频域正交序列; 将频域正交序列与由频域随机序列解扰的频域信号相关; 以及通过阈值检测装置检测来自频域相关器的输出，并确定发射机标识符序列。 系统生成的随机序列带宽和本发明的方法可以根据传输带宽要求灵活配置，并且该序列可以以带宽内的每个频点的功率任意分配。 本发明可以广泛地应用于多媒体广播，地面广播，有线广播等。

公开(公告)号：US20110299381A1

公开(公告)日：2011-12-08

申请号：US13148242

申请日：2010-02-01

申请人： Qihong Ge ,  Dong Bai ,  Tao Tao ,  Qiusheng Wang ,  Wen Chen

发明人： Qihong Ge ,  Dong Bai ,  Tao Tao ,  Qiusheng Wang ,  Wen Chen

IPC分类号： H04J11/00

CPC分类号： H04L5/0007 ,  H04L1/0009 ,  H04L1/0057 ,  H04L1/0065 ,  H04L1/0071 ,  H04L5/0044 ,  H04L5/005 ,  H04L5/0064 ,  H04L27/2607

摘要： A mobile multimedia broadcast transmission system is provided, which comprises: a Reed-Solomon (RS) coding and byte interleaving unit, a Low Density Parity Check (LDPC) coder, a bit interleaver, a constellation mapping unit, a frequency domain symbol generator, a scrambler, an Inverse Fast Fourier Transform (IFFT) unit, a time domain framing unit, and a transmitter. According to the technical solutions provided in the present invention, the system can provide high-quality mobile multimedia services for users in a 6 MHz operation bandwidth. Furthermore, an optimized selection is performed on RS coding according to the operation bandwidth of the system, thereby selecting an appropriate coding mode according to different channel conditions. Accordingly, the byte interleaver is optimized, such that suitable interleaving parameters can be used to perform byte interleaving. With the technical solutions provided in the present invention, the continuous pilots, the discrete pilots and the digital sub-carriers of the system can be suitably configured and allocated according to the actual bandwidth of the system, thereby suitably configuring the system overhead of the mobile multimedia broadcast transmission system to efficiently utilize spectral resources for data transmission.

摘要翻译： 提供一种移动多媒体广播传输系统，其包括：里德 - 所罗门（RS）编码和字节交织单元，低密度奇偶校验（LDPC）编码器，比特交织器，星座映射单元，频域符号发生器， 扰频器，快速傅里叶逆变换（IFFT）单元，时域成帧单元和发射机。 根据本发明提供的技术方案，该系统可以为6MHz操作带宽的用户提供高质量的移动多媒体业务。 此外，根据系统的操作带宽对RS编码进行优化选择，从而根据不同的信道条件选择适当的编码模式。 因此，字节交织器被优化，使得适当的交织参数可以用于执行字节交织。 利用本发明提供的技术方案，可以根据系统的实际带宽适当地配置和分配系统的连续导频，离散导频和数字子载波，从而适当地配置移动台的系统开销 多媒体广播传输系统，有效利用频谱资源进行数据传输。

公开(公告)号：US20110051825A1

公开(公告)日：2011-03-03

申请号：US12446054

申请日：2006-11-15

申请人： Tao Tao ,  Dong Bai ,  Qihong Ge ,  Wen Chen ,  Yibin Liang ,  Qinghua Yang ,  Lian Wang ,  Qun Li ,  Hongbing Shen

发明人： Tao Tao ,  Dong Bai ,  Qihong Ge ,  Wen Chen ,  Yibin Liang ,  Qinghua Yang ,  Lian Wang ,  Qun Li ,  Hongbing Shen

IPC分类号： H04L27/28

CPC分类号： H04L1/0057 ,  H04L1/0065 ,  H04L1/0071 ,  H04L27/2602 ,  H04L27/2626

摘要： The present invention discloses a multi-carrier digital multimedia broadcast system and the digital information transmission method thereof. After RS encoding and byte interleaving, LDPC encoding, bit interleaving and constellation mapping to an upper layer of data streams in turn, the obtained data symbol is multiplexed with scattered pilots and continual pilots which include the system information to form an OFDM frequency domain symbol and scrambled; an OFDM time domain symbol is generated by IFFT transforming, and after inserted with the frame head to build a time slot, it is connected to form a signal frame of the physical layer; the signal frame of the physical layer is transmitted after being low-pass filtered and orthogonal upconverted. The system and method thereof provide wireless broadcast with high quality such as audio, video and multimedia data and the like for mobile, fixed and portable receivers, and can use the satellite transmission and terrestrial transmission method for transmitting. The method utilizes the LDPC OFDM scheme, and the system applies the microwave and large scale integrated circuit technologies while fulfills the needs for low cast and high performance.

摘要翻译： 本发明公开了一种多载波数字多媒体广播系统及其数字信息传输方法。 在RS编码和字节交织之后，将LDPC编码，比特交织和星座映射依次转换成数据流的上层，所获得的数据符号与包括系统信息的散射导频和连续导频复用以形成OFDM频域符号， 炒了 通过IFFT变换生成OFDM时域符号，并且在插入帧头以构建时隙之后，连接形成物理层的信号帧; 物理层的信号帧经过低通滤波和正交上变频后传输。 其系统和方法为移动，固定和便携式接收机提供高质量的无线广播，例如音频，视频和多媒体数据等，并且可以使用卫星传输和地面传输方法进行传输。 该方法采用LDPC OFDM方案，系统应用微波和大规模集成电路技术，同时满足低速和高性能的需要。