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
    • 2. 发明申请
    • 光线路终端、远端节点单元、光传输方法及系统
    • WO2009056064A1
    • 2009-05-07
    • PCT/CN2008/072823
    • 2008-10-24
    • 华为技术有限公司喻凡
    • 喻凡
    • H04B10/12
    • H04J14/0282
    • An optical line terminal, a remote node unit, an optical transmission method thereof are provided, wherein, the method includes following steps: performing the power branching respectively to part of or all the M optical signals having different wavelengths generated by M optical sources, thus forming a first group of optical signal including the first branching optical signal and a second group of optical signal including the second branching optical signal, the first group of optical signal and second group of optical signal both have N different wavelengths; performing a crossing route to the first group of optical signal and the second group of optical signal to form N carrier groups of signals that needed to provide to N optical network units. The embodiments of the present invention can solve the problems in the prior art such as the greater number of optical source, the higher cost, and the lower reception quality, the lower efficiency or the higher cost of the optical power, thus the number of the optical source in the network is reduced and the transmission quality of the signal is improved and at the same time, the system cost is decreased.
    • 4. 发明申请
    • 译码装置
    • WO2012106937A1
    • 2012-08-16
    • PCT/CN2011/077678
    • 2011-07-27
    • 华为技术有限公司香港理工大学岑超荣陈旭谭伟文赵越刘重明喻凡
    • 岑超荣陈旭谭伟文赵越刘重明喻凡
    • H03M13/00
    • H03M13/114H03M13/1137H03M13/116
    • 本发明涉及一种译码装置,包括:存储模块,用于存储准循环低密度奇偶校验QC-LDPC码的二分图的各个变量节点的信道信息和在对所述QC-LDPC码进行迭代译码过程中在所述QC-LDPC码的各个校验节点和各个变量节点之间传递的外部信息,其中,在所述QC-LDPC码的任意两个相连的校验节点C和变量节点V之间传递的外部信息存储在所述存储模块的相同存储位置中;更新模块,用于在所述QC-LDPC码的每一次迭代译码过程中,根据所述存储模块所存储的信道信息和外部信息,按照将所述QC-LDPC码的各个校验节点划分为多层校验节点并逐层处理的方式,计算在所述QC-LDPC码的各个校验节点和各个变量节点之间传递的外部信息并且将所计算的外部信息写入所述存储模块以更新所述存储模块所存储的外部信息,以及用于根据所述存储模块所存储的信道信息和外部信息以及所计算的外部信息来计算所述QC-LDPC码的各个变量节点的后验概率信息;以及,计算模块,用于根据所计算的所述QC-LDPC码的各个变量节点的后验概率信息,计算所述QC-LDPC码的各个码位的判决取值。利用该译码装置,减少了所需的存储资源,降低了译码装置的硬件实现复杂度。
    • 6. 发明申请
    • 一种数据传输方法及系统
    • WO2008049357A1
    • 2008-05-02
    • PCT/CN2007/070765
    • 2007-09-25
    • 华为技术有限公司江涛喻凡易永江欧鹏
    • 江涛喻凡易永江欧鹏
    • H04J14/00H04B10/12H04L27/26
    • H04L12/2885H04B10/25754H04J14/0298H04L27/26H04M11/062
    • A method, system of data transmission are provided. The system includes: First photo-electric conversion module(102) which includes first optical transceiver(113) locates in central office and second photo-electric conversion module(201) which includes second optical transceiver(211) locates remote terminal. The first photo-electric conversion module further includes a mixing unit(112). The mixing unit mixes received xDSL signal and wireless signal in FDM mode and outputs mixed electrical signal to the first optical transceiver. The first transceiver converts the received electrical signal to optical signal and the optical signal is transmitted to the second optical transceiver. The second optical transceiver converts the received optical signal to electrical signal and seperates the xDSl signal and the wireless signal from it. The method includes: Mix modulated xDSL signal and wireless base-band signal in FDM mode and attain mixed electrical signal; convert the mixed electrical signal to optical signal and the optical signal is transmitted to remote terminal through optical-fiber; The remote terminal converts the optical signal to electrical signal and separates the xDSL signal and the wireless signal from it. Then xDSL service and wirless service are simultaneously provided with a shared optical netwok. The requirements of different users are meeted and the cost of system is decreased.