公开(公告)号：US20070118346A1

公开(公告)日：2007-05-24

申请号：US11285606

申请日：2005-11-21

申请人： Xian-Huan Wen ,  Wen Chen

发明人： Xian-Huan Wen ,  Wen Chen

IPC分类号： G06G7/48

CPC分类号： E21B49/00 ,  E21B43/00 ,  G01V11/00

摘要： A method, system and apparatus for real-time reservoir model updating using ensemble Kalman filters is described. The method includes a conforming step for bring bringing static and dynamic state variables into conformance with one another during a time step of the updating. Also, an iterative damping method is used in conjunction with the conformance step to account for nonGaussian and nonlinear features in a system. Also, a re-sampling method is described which reduces the ensemble size of reservoir models which are to be updated.

摘要翻译： 描述了使用综合卡尔曼滤波器实时储层模型更新的方法，系统和装置。 该方法包括在更新的时间步骤中使静态和动态状态变量彼此一致的一致性步骤。 此外，迭代阻尼方法与一致性步骤结合使用以考虑系统中的非高斯和非线性特征。 此外，描述了一种重新抽样方法，其减少了要更新的储层模型的集合尺寸。

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。

公开(公告)号：US07855322B2

公开(公告)日：2010-12-21

申请号：US12471564

申请日：2009-05-26

申请人： Michael B. Lanahan ,  Shib Sankar Basu ,  Christopher J Batie ,  Wen Chen ,  Joyce Craig ,  Mark Kinkema

发明人： Michael B. Lanahan ,  Shib Sankar Basu ,  Christopher J Batie ,  Wen Chen ,  Joyce Craig ,  Mark Kinkema

IPC分类号： C12N15/82 ,  C12N15/31 ,  C12N15/56 ,  C12N15/62 ,  C12N15/84 ,  A01H5/00 ,  A01H5/10

CPC分类号： C12N9/2428 ,  C12N9/2408 ,  C12N9/2411 ,  C12N9/2414 ,  C12N9/2422 ,  C12N9/2451 ,  C12N9/2457 ,  C12N9/246 ,  C12N15/8245 ,  C12P7/06 ,  C12P19/14 ,  C12Y302/01001 ,  C12Y302/01003 ,  C12Y302/0102 ,  C12Y302/01041 ,  C12Y302/01068 ,  Y02E50/16 ,  Y02E50/17

摘要： The invention provides polynucleotides, preferably synthetic polynucleotides, which encode processing enzymes that are optimized for expression in plants. The polynucleotides encode mesophilic, thermophilic, or hyperthermophilic processing enzymes, which are activated under suitable activating conditions to act upon the desired substrate. Also provided are “self-processing” transgenic plants, and plant parts, e.g., grain, which express one or more of these enzymes and have an altered composition that facilitates plant and grain processing. Methods for making and using these plants, e.g., to produce food products having improved taste and to produce fermentable substrates for the production of ethanol and fermented beverages are also provided.

摘要翻译： 本发明提供了多核苷酸，优选合成的多核苷酸，其编码为在植物中表达而优化的加工酶。 多核苷酸编码嗜温，嗜热或超嗜热加工酶，其在合适的活化条件下活化以作用于所需的底物。 还提供了“自加工”转基因植物和植物部分，例如表达这些酶中的一种或多种并且具有改变的组合物的植物和谷粒加工的植物部分。 还提供了制备和使用这些植物的方法，例如生产具有改善味道的食品并生产用于生产乙醇和发酵饮料的可发酵底物。

公开(公告)号：US20100180175A1

公开(公告)日：2010-07-15

申请号：US12376644

申请日：2006-11-13

申请人： Huishi Song ,  Hongbing Shen ,  Qun Li ,  Qinghua Yang ,  Wen Chen

发明人： Huishi Song ,  Hongbing Shen ,  Qun Li ,  Qinghua Yang ,  Wen Chen

IPC分类号： H03M13/05 ,  G06F11/10

CPC分类号： H03M13/033 ,  H03M13/1102

摘要： A method for constructing LDPC (Low-Density Parity-Check) code in the mobile digital multimedia broadcast system is provided, wherein the Low-Density Parity-Check matrix of the LDPC code is iteratively constructed according to a code-table and expansion method, and the code-table is a part of the constructed Low-Density Parity-Check matrix. According to the constructing method of the present invention, the LDPC code having excellent performance of error correcting coding which is applicable to the mobile digital multimedia broadcast system.

摘要翻译： 提供了一种在移动数字多媒体广播系统中构造LDPC（低密度奇偶校验）码的方法，其中根据码表和扩展方法迭代地构建LDPC码的低密度奇偶校验矩阵， 代码表是构建的低密度奇偶校验矩阵的一部分。 根据本发明的构造方法，可以应用于移动数字多媒体广播系统的具有优异的纠错编码性能的LDPC码。

公开(公告)号：US20100027695A1

公开(公告)日：2010-02-04

申请号：US12310037

申请日：2006-11-24

申请人： Fajun Yan ,  Tao Tao ,  Wen Chen ,  Qihong Ge ,  Dong Bai ,  Qinghua Yang

发明人： Fajun Yan ,  Tao Tao ,  Wen Chen ,  Qihong Ge ,  Dong Bai ,  Qinghua Yang

IPC分类号： H04L27/28

CPC分类号： H04L5/0094 ,  H04L5/0007

摘要： A method for transmitting control information to indicate a receiver, comprising following steps: the control information is formed at transmitting side and is encoded based on the working status of the transmitting side of the system; after the encoded control information is mapped, it is multiplexed with other pilot symbol and service load, then an OFDM symbol is generated; the OFDM symbol is transformed from frequency domain to time domain, then a time domain sampling signal is obtained and transmitted to the receiving side of the system; at the receiving side, the time domain sampling signal transmitted by the transmitting side is received and transformed from time domain to frequency domain to form OFDM symbol; the control information is obtained from the valid sub carrier of the OFDM symbol, and the control information is decoded; each work information is extracted form the decoded control information, and the receiving terminal is indicated to execute respective receive process based on the extracted work information. The method can ensure the receiving terminal to receive data based on its own expectation, then reduces the work power consumption of the receiving terminal, and saves the run cost of the digital broadcast system.

摘要翻译： 一种用于发送控制信息以指示接收机的方法，包括以下步骤：控制信息形成在发送侧，并根据系统的发送侧的工作状态进行编码; 编码控制信息映射后，与其他导频符号和业务负载进行复用，生成OFDM符号; OFDM符号从频域变换为时域，得到时域采样信号并将其发送到系统的接收端; 在接收侧，从发送侧发送的时域采样信号从时域到频域被接收并变换为OFDM符号; 从OFDM符号的有效子载波获得控制信息，对该控制信息进行解码; 从解码控制信息中提取每个工作信息，并且基于所提取的工作信息指示接收终端执行相应的接收处理。 该方法可以确保接收终端根据自己的期望接收数据，降低接收终端的工作功耗，节省数字广播系统的运行成本。