会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 4. 发明授权
    • Antipodal demodulation method and antipodal demodulator for non-coherent unitary space-time modulation in MIMO wireless communication
    • 用于MIMO无线通信中非相干单位时空调制的对象解调方法和对称解调器
    • US08879660B1
    • 2014-11-04
    • US14086325
    • 2013-11-21
    • Hua Zhong University of Science and Technology
    • Li PengDawei Fu
    • H04B7/02H04L1/02H04B7/08H04L1/06H04B7/04
    • H04L1/0612H04B7/0413
    • Provided is an antipodal demodulation method and an antipodal demodulator for non-coherent unitary space-time modulation in MIMO wireless communication. The invention comprises: traversing L/2 constellation points in each sub-constellation of a non-coherent unitary space-time diagram for maximum likelihood demodulation calculation, determining a maximum trace ψmax and a minimum trace ψmin from traces of L/2 matrix products, calculating a maximum trace ψmax of a matrix product corresponding to the constellation matrix in the other sub-constellation according to ψmax=tr(YH Φj ΦhHY)=tr(YHY)−tr(YHΦjΦjHY)=σ−ψmin, and outputting a constellation point corresponding to the greater one of ψmax and ψmax as a demodulation signal. The antipodal demodulation method of the invention reduces calculation workload by ½ and features lower calculation complexity over the conventional maximum likelihood demodulation method without degrading demodulation performance.
    • 提供了一种用于MIMO无线通信中的非相干单时空时间调制的对称解调方法和对映码解调器。 本发明包括:遍历非相干单位时空图的每个子星座中的L / 2个星座点进行最大似然解调计算,从L / 2矩阵乘积的痕迹确定最大轨迹ψmax和最小轨迹ψmin, 根据ψmax= tr(YHΦjΦhHY)= tr(YHY)-tr(YHΦjΦjHY)=&sgr;-ψmin计算与其他子星座中的星座矩阵相对应的矩阵乘积的最大轨迹ψmax,并输出星座 对应于ψmax和ψmax中较大的一个作为解调信号。 本发明的对称解调方法将计算工作量减少了1/2,并且具有比传统的最大似然解调方法更低的计算复杂度,而不降低解调性能。
    • 5. 发明授权
    • Data redistribution in data replication systems
    • 数据复制系统中的数据重新分配
    • US08837480B2
    • 2014-09-16
    • US13666871
    • 2012-11-01
    • Hua ZhongDheer MogheSazzala Venkata Reddy
    • Hua ZhongDheer MogheSazzala Venkata Reddy
    • H04L12/28
    • G06F17/30575H04L67/1095
    • Data replication comprises: redistributing one or more originator data subsets among a plurality of originator nodes; determining data redistribution information pertaining to redistribution of the one or more originator data subsets among the plurality of originator nodes; and sending data redistribution information to a replica system. The data redistribution information is used by the replica system to redistribute one or more corresponding replica data subsets among a plurality of replica nodes; and the one or more corresponding replica data subsets are redistributed among the plurality of replica nodes without requiring the one or more originator data subsets to be sent to the replica system during redistribution.
    • 数据复制包括:在多个发起者节点之间重新分配一个或多个发起者数据子集; 确定与所述多个发起者节点中的所述一个或多个发起者数据子集的再分配有关的数据再分配信息; 并将数据再发布信息发送到副本系统。 复制系统使用数据再分配信息来重新分配多个复制节点之中的一个或多个对应的副本数据子集; 并且在多个副本节点之间重新分配一个或多个对应的副本数据子集,而不需要在再分配期间将一个或多个发起者数据子集发送到副本系统。
    • 7. 发明申请
    • DATA REDISTRIBUTION IN DATA REPLICATION SYSTEMS
    • 数据复制系统中的数据重新分配
    • US20130124476A1
    • 2013-05-16
    • US13666871
    • 2012-11-01
    • Hua ZhongDheer MogheSazzala Venkata Reddy
    • Hua ZhongDheer MogheSazzala Venkata Reddy
    • G06F17/30
    • G06F17/30575H04L67/1095
    • Data replication comprises: redistributing one or more originator data subsets among a plurality of originator nodes; determining data redistribution information pertaining to redistribution of the one or more originator data subsets among the plurality of originator nodes; and sending data redistribution information to a replica system. The data redistribution information is used by the replica system to redistribute one or more corresponding replica data subsets among a plurality of replica nodes; and the one or more corresponding replica data subsets are redistributed among the plurality of replica nodes without requiring the one or more originator data subsets to be sent to the replica system during redistribution.
    • 数据复制包括:在多个发起者节点之间重新分配一个或多个发起者数据子集; 确定与所述多个发起者节点中的所述一个或多个发起者数据子集的再分配有关的数据再分配信息; 并将数据再发布信息发送到副本系统。 复制系统使用数据再分配信息来重新分配多个复制节点之中的一个或多个对应的副本数据子集; 并且在多个副本节点之间重新分配一个或多个对应的副本数据子集,而不需要在再分配期间将一个或多个发起者数据子集发送到副本系统。