Nonbinary LDPC coded modulation without bandwidth expansion for high-speed optical transmission
    172.
    发明授权
    Nonbinary LDPC coded modulation without bandwidth expansion for high-speed optical transmission 有权
    用于高速光传输的无带宽扩展的非二进制LDPC编码调制

    公开(公告)号:US09166728B2

    公开(公告)日:2015-10-20

    申请号:US13646392

    申请日:2012-10-05

    CPC classification number: H04J14/04 H04B10/5055 H04J14/06

    Abstract: Systems and methods for data transport, comprising encoding one or more streams of input data using nonbinary low density parity check (NB-LDPC) encoders, corresponding to orthogonal polarization states. Receiving one or more streams of input data using a buffer coupled to the encoders, the data written to the buffer bR bits at a time, where R is the code rate. Generating one or more signals using a 2b-ary mapper implemented as a look-up table (LUT) to store coordinates of a corresponding signal constellation, the 2b-ary mapper configured to assign bits of one or more signals to a signal constellation and to associate the bits of the signals with signal constellation points, wherein the constellation is expanded to avoid bandwidth expansion due to coding, generating substantial net coding gains within a same bandwidth. Modulating nonbinary LDPC-coded data streams using in-phase/quadrature (I/Q) modulators and multiplexing the data streams using polarization beam combiner.

    Abstract translation: 用于数据传输的系统和方法,包括使用对应于正交极化状态的非二进制低密度奇偶校验(NB-LDPC)编码器来编码一个或多个输入数据流。 使用耦合到编码器的缓冲器接收一个或多个输入数据流,每次写入缓冲器bR位的数据,其中R是码率。 使用实现为查找表(LUT)的2b-ary映射器来存储一个或多个信号来存储对应的信号星座的坐标,2b-ary映射器被配置为将一个或多个信号的位分配给信号星座,并且 将信号的位与信号星座点相关联,其中扩展星座以避免由于编码而导致的带宽扩展,从而在相同带宽内产生实质的网络编码增益。 使用同相/正交(I / Q)调制器调制非二进制LDPC编码数据流,并使用偏振束组合器复用数据流。

    Symmetric coherent OFDMA-PON configuration with low-speed ONU-side
    173.
    发明授权
    Symmetric coherent OFDMA-PON configuration with low-speed ONU-side 有权
    具有低速ONU侧的对称相干OFDMA-PON配置

    公开(公告)号:US09160480B2

    公开(公告)日:2015-10-13

    申请号:US13470425

    申请日:2012-05-14

    CPC classification number: H04J14/0282 H04J14/002

    Abstract: A method by an optical network unit ONU includes, for downstream transmission, using a first tunable laser for coherent detection on a sub-band basis to increase receiver sensitivity and reduce analog-to-digital conversion ADC and digital signal processor DSP requirements within the ONU, and for upstream transmission, using a second tunable laser and using an optical signal beating between the first and second tunable lasers to generate a tunable radio frequency RF signal source for upstream multi-band OFDMA signal generation thereby avoiding need for an otherwise more costly RF clock source within the ONU, enabling low-speed digital-to-analog conversion DAC operation and rendering the ONU colorless in both optical and radio frequency RF domains.

    Abstract translation: 光网络单元ONU的方法包括下行传输,使用第一可调谐激光器进行基于子带的相干检测,以增加接收机灵敏度并减少ONU内的模数转换ADC和数字信号处理器DSP的要求 并且对于上游传输,使用第二可调激光器并且使用在第一和第二可调谐激光器之间拍打的光信号来产生用于上行多频带OFDMA信号生成的可调谐射频信号源,从而避免需要另外更昂贵的RF ONU内的时钟源,实现低速数模转换DAC操作,并使ONU在光和射频领域都无色。

    Method for simultaneous scheduling of processes and offloading computation on many-core coprocessors
    174.
    发明授权
    Method for simultaneous scheduling of processes and offloading computation on many-core coprocessors 有权
    多核协同处理器同步进程调度和卸载计算方法

    公开(公告)号:US09152467B2

    公开(公告)日:2015-10-06

    申请号:US13858039

    申请日:2013-04-06

    CPC classification number: G06F9/5044 G06F9/5033 G06F2209/509

    Abstract: A method is disclosed to manage a multi-processor system with one or more manycore devices, by managing real-time bag-of-tasks applications for a cluster, wherein each task runs on a single server node, and uses the offload programming model, and wherein each task has a deadline and three specific resource requirements: total processing time, a certain number of manycore devices and peak memory on each device; when a new task arrives, querying each node scheduler to determine which node can best accept the task and each node scheduler responds with an estimated completion time and a confidence level, wherein the node schedulers use an urgency-based heuristic to schedule each task and its offloads; responding to an accept/reject query phase, wherein the cluster scheduler send the task requirements to each node and queries if the node can accept the task with an estimated completion time and confidence level; and scheduling tasks and offloads using a aging and urgency-based heuristic, wherein the aging guarantees fairness, and the urgency prioritizes tasks and offloads so that maximal deadlines are met.

    Abstract translation: 公开了一种通过管理用于集群的实时任务应用程序来管理具有一个或多个管理器设备的多处理器系统的方法,其中每个任务在单个服务器节点上运行,并且使用卸载编程模型, 并且其中每个任务具有最后期限和三个特定的资源要求:总处理时间,一定数量的管理设备和每个设备上的峰值存储器; 当新任务到达时,查询每个节点调度器以确定哪个节点可以最好地接受任务,并且每个节点调度器以估计的完成时间和置信水平进行响应,其中节点调度器使用基于紧急度的启发式来安排每个任务及其 卸货 响应于接受/拒绝查询阶段,其中所述群集调度器向每个节点发送所述任务需求,并且查询所述节点是否可以接收具有估计完成时间和置信水平的所述任务; 并使用基于老化和紧急性的启发式调度任务和卸载,其中老化保证公平性,并且紧急性优先考虑任务和卸载,以便满足最大期限。

    Degrees of freedom per communication node
    178.
    发明授权
    Degrees of freedom per communication node 有权
    每个通信节点的自由度

    公开(公告)号:US09124360B2

    公开(公告)日:2015-09-01

    申请号:US14561171

    申请日:2014-12-04

    CPC classification number: H04B15/00 H04B7/0452

    Abstract: Systems and methods are disclosed to operate a communication network by dividing signal dimensions at a receiver into interference and intended signal dimensions; applying transmit precoding to mitigate interference by overlapping the interference from a plurality of transmitters into the interference dimension at the receiver; and applying a receiver filter to cancel out the interference dimension at the receiver and recover the signal in the intended signal dimension.

    Abstract translation: 公开了通过将接收机处的信号尺寸划分为干扰和预期信号尺寸来操作通信网络的系统和方法; 应用传输预编码以通过将来自多个发射机的干扰与所述接收机处的干扰维度重叠来减轻干扰; 以及应用接收机滤波器来消除接收机处的干扰维度,并恢复预期信号维度中的信号。

    Portable workload performance prediction for the cloud
    179.
    发明授权
    Portable workload performance prediction for the cloud 有权
    云的便携式工作负载性能预测

    公开(公告)号:US09111232B2

    公开(公告)日:2015-08-18

    申请号:US13874769

    申请日:2013-05-01

    CPC classification number: G06N99/005 G06N5/04

    Abstract: Systems and methods are disclosed to perform performance prediction for cloud-based databases by building on a computer a cloud database performance model using a set of training workloads; and using a learned model on the computer to predict database performance in the cloud for a new workload, wherein for each reference workload r and hardware configuration h, system throughput tr,h, average throughput of αr and standard deviation σr, comprising normalizing each throughput as: t r , h _ = t r , h - a r σ r .

    Abstract translation: 披露了系统和方法,通过使用一组训练工作负载,在计算机上构建云数据库性能模型,来对云数据库执行性能预测; 并在计算机上使用学习模型来预测云中的新工作负载的数据库性能,其中对于每个参考工作负载r和硬件配置h,系统吞吐量tr,h,αr的平均吞吐量和标准偏差r包括归一化 每个吞吐量如下:tr,h _ = tr,h-ar&sgr; r。

    Policy-aware based method for deployment of enterprise virtual tenant networks
    180.
    发明授权
    Policy-aware based method for deployment of enterprise virtual tenant networks 有权
    用于部署企业虚拟租户网络的基于策略感知的方法

    公开(公告)号:US09106576B2

    公开(公告)日:2015-08-11

    申请号:US13740229

    申请日:2013-01-13

    Abstract: A method for policy-aware mapping of an enterprise virtual tenant network includes receiving inputs from a hosting network and tenants, translating resource demand and policies of the tenants into a network topology and bandwidth demand on each link in the network; pre-arranging a physical resource of a physical topology for clustering servers on the network to form an allocation unit before a VTN allocation; allocating resources of the hosting network to satisfy demand of the tenants in response to a VTN demand request; and conducting a policy aware VTN mapping for enumerating all feasibly resource mappings, bounded by a predetermined counter for outputting optimal mapping with policy-compliant routing paths in the hosting network.

    Abstract translation: 一种用于企业虚拟租户网络的策略感知映射的方法包括从主机网络和租户接收输入,将租户的资源需求和策略转换为网络中每个链路上的网络拓扑和带宽需求; 预先布置物理拓扑的物理资源,用于网络上的聚类服务器,以在VTN分配之前形成分配单元; 分配主机网络的资源以满足VTN需求请求响应租户的需求; 以及执行策略感知VTN映射,用于枚举所有可行的资源映射,其由预定计数器限定,用于在主机网络中输出具有策略兼容路由路径的最佳映射。

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