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    Rate-compatible protograph LDPC code families with linear minimum distance
    3.
    发明授权
    Rate-compatible protograph LDPC code families with linear minimum distance 有权
    具有线性最小距离的速率兼容原型LDPC码系列

    公开(公告)号：US08239746B2

    公开(公告)日：2012-08-07

    申请号：US13341648

    申请日：2011-12-30

    申请人： Dariush Divsalar ,  Samuel J. Dolinar, Jr. ,  Christopher R. Jones

    发明人： Dariush Divsalar ,  Samuel J. Dolinar, Jr. ,  Christopher R. Jones

    IPC分类号： H03M13/13 ,  H03M13/00

    CPC分类号： H04L1/0057 ,  H03M13/03 ,  H03M13/033 ,  H03M13/116 ,  H03M13/6362 ,  H03M13/6393

    摘要： Digital communication coding methods are shown, which generate certain types of low-density parity-check (LDPC) codes built from protographs. A first method creates protographs having the linear minimum distance property and comprising at least one variable node with degree less than 3. A second method creates families of protographs of different rates, all structurally identical for all rates except for a rate-dependent designation of certain variable nodes as transmitted or non-transmitted. A third method creates families of protographs of different rates, all structurally identical for all rates except for a rate-dependent designation of the status of certain variable nodes as non-transmitted or set to zero. LDPC codes built from the protographs created by these methods can simultaneously have low error floors and low iterative decoding thresholds.

    摘要翻译： 示出了数字通信编码方法，其生成由原始图形构建的某些类型的低密度奇偶校验（LDPC）码。 第一种方法创建具有线性最小距离属性并具有至少一个度数小于3的至少一个可变节点的原始图。第二种方法创建不同速率的原型系列，在所有速率的结构上都是相同的，除了特定的速率依赖指定 可变节点作为发送或未发送。 第三种方法创建不同速率的原型系列，所有速率的结构相同，除了某些变量节点的状态的速率依赖性指定为未发送或设置为零。 由这些方法创建的原型图构建的LDPC码可以同时具有低错误层和低迭代解码阈值。

    Rate-compatible protograph LDPC code families with linear minimum distance
    4.
    发明授权
    Rate-compatible protograph LDPC code families with linear minimum distance 有权
    具有线性最小距离的速率兼容原型LDPC码系列

    公开(公告)号：US08117523B2

    公开(公告)日：2012-02-14

    申请号：US12125862

    申请日：2008-05-22

    申请人： Dariush Divsalar ,  Samuel J Dolinar, Jr. ,  Christopher R. Jones

    发明人： Dariush Divsalar ,  Samuel J Dolinar, Jr. ,  Christopher R. Jones

    IPC分类号： H03M13/13 ,  H03M13/00

    CPC分类号： H04L1/0057 ,  H03M13/03 ,  H03M13/033 ,  H03M13/116 ,  H03M13/6362 ,  H03M13/6393

    摘要： Digital communication coding methods are shown, which generate certain types of low-density parity-check (LDPC) codes built from protographs. A first method creates protographs having the linear minimum distance property and comprising at least one variable node with degree less than 3. A second method creates families of protographs of different rates, all having the linear minimum distance property, and structurally identical for all rates except for a rate-dependent designation of certain variable nodes as transmitted or non-transmitted. A third method creates families of protographs of different rates, all having the linear minimum distance property, and structurally identical for all rates except for a rate-dependent designation of the status of certain variable nodes as non-transmitted or set to zero. LDPC codes built from the protographs created by these methods can simultaneously have low error floors and low iterative decoding thresholds, and families of such codes of different rates can be decoded efficiently using a common decoding architecture.

    摘要翻译： 示出了数字通信编码方法，其生成由原始图形构建的某些类型的低密度奇偶校验（LDPC）码。 第一种方法创建具有线性最小距离属性的原始图，并且包含至少一个度数小于3的可变节点。第二种方法创建不同速率的原型系列，全部具有线性最小距离属性，并且对于所有速率在结构上相同， 用于某些可变节点的速率依赖性指定，如发送或未发送。 第三种方法创建不同速率的原型系列，所有族都具有线性最小距离属性，并且对于所有速率的结构相同，除了某些可变节点的状态的速率依赖性指定为未发送或设置为零。 由这些方法创建的原型图构建的LDPC码可以同时具有低误差底层和低迭代解码阈值，并且可以使用公共解码架构有效地解码不同速率的这种码的族。

    Parallel concatenated code with soft-in soft-out interactive turbo decoder
    5.
    发明授权
    Parallel concatenated code with soft-in soft-out interactive turbo decoder 有权
    并行级联代码与软入软交互式turbo解码器

    公开(公告)号：US07715503B2

    公开(公告)日：2010-05-11

    申请号：US12534604

    申请日：2009-08-03

    申请人： Kelly B. Cameron ,  Hau Thien Tran ,  Ba-Zhong Shen ,  Christopher R. Jones

    发明人： Kelly B. Cameron ,  Hau Thien Tran ,  Ba-Zhong Shen ,  Christopher R. Jones

    IPC分类号： H04L5/12 ,  H04L23/02

    CPC分类号： H03M13/3972 ,  H03M13/151 ,  H03M13/1515 ,  H03M13/25 ,  H03M13/258 ,  H03M13/27 ,  H03M13/2757 ,  H03M13/29 ,  H03M13/2966 ,  H03M13/2978 ,  H03M13/3905 ,  H03M13/3922 ,  H03M13/3927 ,  H03M13/3988 ,  H03M13/4107 ,  H03M13/6505 ,  H03M13/6561 ,  H04L1/0041 ,  H04L1/005 ,  H04L1/006 ,  H04L1/0065 ,  H04L1/0066 ,  H04L1/0068 ,  H04L1/0071

    摘要： A method for parallel concatenated (Turbo) encoding and decoding. Turbo encoders receive a sequence of input data tuples and encode them. The input sequence may correspond to a sequence of an original data source, or to an already coded data sequence such as provided by a Reed-Solomon encoder. A turbo encoder generally comprises two or more encoders separated by one or more interleavers. The input data tuples may be interleaved using a modulo scheme in which the interleaving is according to some method (such as block or random interleaving) with the added stipulation that the input tuples may be interleaved only to interleaved positions having the same modulo-N (where N is an integer) as they have in the input data sequence. If all the input tuples are encoded by all encoders then output tuples can be chosen sequentially from the encoders and no tuples will be missed. If the input tuples comprise multiple bits, the bits may be interleaved independently to interleaved positions having the same modulo-N and the same bit position. This may improve the robustness of the code. A first encoder may have no interleaver or all encoders may have interleavers, whether the input tuple bits are interleaved independently or not. Modulo type interleaving also allows decoding in parallel.

    摘要翻译： 一种并行级联（Turbo）编码和解码的方法。 Turbo编码器接收一系列输入数据元组并进行编码。 输入序列可以对应于原始数据源的序列，或者对应于已由Reed-Solomon编码器提供的已经编码的数据序列。 turbo编码器通常包括由一个或多个交织器分离的两个或更多个编码器。 输入数据元组可以使用其中交织根据某些方法（例如块或随机交织）的加法规则进行交织，其中输入元组可以只交织到具有相同模N的交织位置 其中N是整数），因为它们在输入数据序列中具有。 如果所有的输入元组都是由所有的编码器编码的，那么输出元组可以从编码器顺序选择，也不会丢失元组。 如果输入元组包含多个比特，那么这些比特可以与具有相同模N和相同比特位置的交织位置独立交织。 这可以提高代码的鲁棒性。 第一编码器可以不具有交织器，或者所有编码器可以具有交织器，无论输入元组位是否独立交错。 模式类型交织也允许并行解码。

    Shipping Container for Shipping Channeled Fuel Bundles
    6.
    发明申请
    Shipping Container for Shipping Channeled Fuel Bundles 有权
    船用集装箱航运燃料束

    公开(公告)号：US20090129529A1

    公开(公告)日：2009-05-21

    申请号：US11940434

    申请日：2007-11-15

    申请人： David Francis Wazybok ,  David Grey Smith ,  Andrew Langston ,  William Williams ,  James Michael Downs ,  Christopher R. Jones

    发明人： David Francis Wazybok ,  David Grey Smith ,  Andrew Langston ,  William Williams ,  James Michael Downs ,  Christopher R. Jones

    IPC分类号： G21C19/07

    CPC分类号： G21F5/012 ,  G21F5/08

    摘要： A shipping container is constructed for shipping channeled fuel bundle assemblies. The shipping container includes an outer container, an inner container sized to fit within the outer container, and shock absorbing material disposed at least between the outer and inner containers. The inner container is shaped to house at least one pre-channeled fuel bundle assembly including a channel, a channel fastener, and an array of fuel rods supported by grid spacers between an upper tie plate and a lower tie plate. The inner container includes a lower tie plate restraint device shaped to receive the lower tie plate and a lower portion of the channel, and an upper tie plate restraint device shaped to receive the upper tie plate and an upper portion of the channel and channel fastener assembly. The lower and upper tie plate restraint devices are lockable within the inner shipping container.

    摘要翻译： 建造一个运输集装箱用于运输通道燃料束组件。 运输容器包括外容器，尺寸适合装配在外容器内的容器以及至少设置在外容器和内容器之间的减震材料。 内部容器成形为容纳至少一个预通道燃料束组件，其包括通道，通道紧固件和由上连接板和下连接板之间的格栅间隔件支撑的燃料棒阵列。 内部容器包括形成为容纳下连接板和通道的下部的下拉杆限制装置，以及成形为容纳上连接板和通道和通道紧固件组件的上部的上连接板约束装置 。 下部和上部连接板约束装置可锁定在内部运输容器内。

    Viterbi slicer for turbo codes
    7.
    发明申请
    Viterbi slicer for turbo codes 有权
    涡轮代码维特比切片机

    公开(公告)号：US20090122925A1

    公开(公告)日：2009-05-14

    申请号：US12358362

    申请日：2009-01-23

    申请人： Steven T. Jaffe ,  Kelly B. Cameron ,  Christopher R. Jones

    发明人： Steven T. Jaffe ,  Kelly B. Cameron ,  Christopher R. Jones

    IPC分类号： H04L27/06

    CPC分类号： H04L1/0066 ,  H04L1/005 ,  H04L1/0054 ,  H04L2027/0028 ,  H04L2027/0055

    摘要： A method for synchronizing receivers that receive turbo encoded signals to a received signal. Turbo encoding may enable signals to be decoded at a much lower signal to noise ratio than previously practical. A traditional method of synchronizing a receiver to an incoming signal is to use a slicer to determine a received symbol and then to compare the determined symbol to the incoming waveform, in order to adjust the phase of the slicer with respect to the incoming signal. At signal low levels, at which turbo encoded signals may be decoded, this slicing method may be prone to errors that may disrupt the synchronization of the receiver to the incoming signal. By replacing the slicer by a Viterbi decoder with zero traceback (i.e., one which does not consider future values of the signal only past values) a prediction as to what the incoming signal is can be made. Because the Viterbi decoder can consider past signal values it can predict the present symbol being received with higher reliability than by using a slicer, which considers only the present value of the incoming signal.

    摘要翻译： 一种用于将接收turbo编码信号的接收机同步到接收信号的方法。 Turbo编码可以使信号以比以前实际的低得多的信噪比进行解码。 将接收机同步到传入信号的传统方法是使用限幅器来确定接收到的符号，然后将确定的符号与输入波形进行比较，以便相对于输入信号调节限幅器的相位。 在信号低电平处，可以对Turbo编码信号进行解码，该分片方法可能容易出现可能中断接收机与输入信号的同步的错误。 通过用零回溯的维特比解码器（即，不将信号的未来值仅仅考虑过去的值）来替换限幅器，可以对可以进行什么输入信号进行预测。 因为维特比解码器可以考虑过去的信号值，所以它可以比使用仅考虑输入信号的当前值的限幅器更可靠地预测接收到的当前码元。

    Valve assembly
    8.
    发明申请
    Valve assembly 有权
    阀组件

    公开(公告)号：US20090114292A1

    公开(公告)日：2009-05-07

    申请号：US11981876

    申请日：2007-11-01

    申请人： Scott F. Shafer ,  Christopher R. Jones

    发明人： Scott F. Shafer ,  Christopher R. Jones

    IPC分类号： F16K15/00

    CPC分类号： F04B53/102 ,  F02B3/06 ,  F02M59/466 ,  F02M63/0031 ,  F02M63/0071 ,  F02M63/0078 ,  F04B1/04 ,  F04B53/1022 ,  F05C2201/0406 ,  F05C2201/0412 ,  F05C2201/046 ,  F05C2203/08 ,  F05C2203/0808 ,  F05C2203/0813 ,  F05C2203/0817 ,  F05C2203/0826 ,  F05C2203/083 ,  F05C2203/0847 ,  F05C2203/0852 ,  F05C2203/0895 ,  Y10T137/7838

    摘要： Although modern diesel fuel formulations are intended to reduce emissions of diesel engines, at least some of those modern fuels tend to have relatively low lubricity levels. The control valve assemblies described herein help to minimize any increased wear that would otherwise result from the use of such low lubricity fuels by providing a valve element, a valve guide, and an insert. The valve element is received within the valve guide and is moveable between an open position and a closed position. The insert forms a first sealed interface and a second sealed interface with the valve element and the valve guide. When the valve element is in the closed position, both of the first sealed interface and the second sealed interface are engaged. When the valve element is in the open position, only one of the first sealed interface and the second sealed interface is engaged.

    摘要翻译： 虽然现代柴油燃料配方旨在减少柴油发动机的排放，但至少有些现代燃料往往具有较低的润滑性水平。 这里描述的控制阀组件有助于最小化否则通过提供阀元件，阀引导件和插入件而由使用这种低润滑性燃料而导致的任何增加的磨损。 阀元件容纳在阀引导件内并且能够在打开位置和关闭位置之间移动。 插入件与阀元件和阀引导件形成第一密封界面和第二密封界面。 当阀元件处于关闭位置时，第一密封界面和第二密封界面都被接合。 当阀元件处于打开位置时，第一密封界面和第二密封界面中只有一个接合。