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    • 12. 发明授权
    • Method, device and apparatus for correcting bursts
    • 用于校正脉冲串的方法,装置和装置
    • US08347178B2
    • 2013-01-01
    • US12982617
    • 2010-12-30
    • Dongyu GengRaymond W. K. LeungDongning Feng
    • Dongyu GengRaymond W. K. LeungDongning Feng
    • H03M13/00
    • H03M13/17
    • A method, a device, and an apparatus for correcting bursts are disclosed. The method includes: calculating a correction vector according to a received codeword and a check matrix, wherein the check matrix is an Overlapped Quasi Dual Diagonal Matrix; determining a length and position of a burst according to a longest zero element vector between two nonzero elements in the correction vector when the correction vector is nonzero; and calculating out an error mode according to the correction vector and the length of the burst, obtaining an error mode polynomial according to the error mode, correcting the received codeword according to the error mode polynomial, and obtaining a corrected codeword polynomial. The PBC-based implementation method for cyclic codes herein can correct more burst errors than the conventional cyclic code decoding method.
    • 公开了一种用于校正脉冲串的方法,装置和装置。 该方法包括:根据接收的码字和校验矩阵来计算校正矢量,其中校验矩阵是重叠的准双对角矩阵; 当所述校正向量为非零时,根据所述校正向量中的两个非零元素之间的最长零元素矢量确定突发的长度和位置; 根据校正矢量和脉冲串的长度计算误差模式,根据误差模式获得误差模式多项式,根据误差模式多项式校正接收到的码字,并获得校正的码字多项式。 这里的循环码的基于PBC的实现方法可以比传统的循环码解码方法校正更多的突发错误。
    • 13. 发明授权
    • Method and apparatus for encoding and decoding data
    • 用于对数据进行编码和解码的方法和装置
    • US08375276B2
    • 2013-02-12
    • US12778594
    • 2010-05-12
    • Dongyu GengRaymond W. K. LeungDongning Feng
    • Dongyu GengRaymond W. K. LeungDongning Feng
    • H03M13/00
    • H04L7/04H04L1/0057
    • The embodiments of the present invention provide a data coding method. In this data coding method, a synchronization header is added to the data that has undergone line coding and FEC coding, and then the data is framed and sent out. The embodiments of the present invention also provide the corresponding data decoding method, data coding apparatus, and data decoding apparatus. Because the redundant information for synchronization is added, the synchronization performance of the transmission system is ensured effectively even if the algorithm selected in the line coding provides low redundancy; moreover, the added synchronization header does not participate in the FEC coding calculation, thus preventing impact on the FEC coding gain.
    • 本发明的实施例提供一种数据编码方法。 在该数据编码方法中,将同步头添加到经过行编码和FEC编码的数据之后,将数据进行帧化并发送出去。 本发明的实施例还提供相应的数据解码方法,数据编码装置和数据解码装置。 由于添加了用于同步的冗余信息,即使在线路编码中选择的算法提供低冗余度,也能有效地确保传输系统的同步性能; 此外,添加的同步报头不参与FEC编码计算,从而防止对FEC编码增益的影响。
    • 15. 发明申请
    • METHOD, DEVICE AND APPARATUS FOR CORRECTING BURSTS
    • 方法,设备和装置修正冲击
    • US20110131469A1
    • 2011-06-02
    • US12982617
    • 2010-12-30
    • Dongyu GengRaymond W. K. LeungDongning Feng
    • Dongyu GengRaymond W. K. LeungDongning Feng
    • H03M13/17G06F11/10
    • H03M13/17
    • A method, a device, and an apparatus for correcting bursts are disclosed. The method includes: calculating a correction vector according to a received codeword and a check matrix, wherein the check matrix is an Overlapped Quasi Dual Diagonal Matrix; determining a length and position of a burst according to a longest zero element vector between two nonzero elements in the correction vector when the correction vector is nonzero; and calculating out an error mode according to the correction vector and the length of the burst, obtaining an error mode polynomial according to the error mode, correcting the received codeword according to the error mode polynomial, and obtaining a corrected codeword polynomial. The PBC-based implementation method for cyclic codes herein can correct more burst errors than the conventional cyclic code decoding method.
    • 公开了一种用于校正脉冲串的方法,装置和装置。 该方法包括:根据接收的码字和校验矩阵来计算校正矢量,其中校验矩阵是重叠的准双对角矩阵; 当所述校正向量为非零时,根据所述校正向量中的两个非零元素之间的最长零元素矢量确定突发的长度和位置; 根据校正矢量和脉冲串的长度计算误差模式,根据误差模式获得误差模式多项式,根据误差模式多项式校正接收到的码字,并获得校正的码字多项式。 这里的循环码的基于PBC的实现方法可以比传统的循环码解码方法校正更多的突发错误。
    • 16. 发明授权
    • Method and device for sending upstream transfer frame in passive optical network
    • 在无源光网络中发送上行传输帧的方法和装置
    • US08259734B2
    • 2012-09-04
    • US13219075
    • 2011-08-26
    • Dongning FengDongyu GengJing LiWai Kong Raymond LeungFrank Effenberger
    • Dongning FengDongyu GengJing LiWai Kong Raymond LeungFrank Effenberger
    • H04L12/28
    • H04B10/27H04L7/041H04L7/046H04Q11/0067
    • The present invention relates to the Passive Optical Network (PON) technology, and a method for sending an upstream transfer frame in a PON is provided, so as to improve flexibility of a system and satisfy a requirement that an error probability is reduced as low as possible. The method includes: after success of link, sending a preamble according to an allocated time slot, sending a burst synchronization delimiter, and then sending successively a burst header, a Gigabit-Capable Passive Optical Network (GPON) Transmission Convergence (GTC) frame header, and GTC frame data. In the sent synchronization delimiter, the number of non-zeros is the same as the number of zeros, and in a delimiter sequence, the number of non-zeros on odd bits is equal to the number of zeros on even bits, and the number of non-zeros on even bits is equal to the number of zeros on odd bits, the number of zeros on the odd bits is N, the number of non-zeros on the odd bits is M, a relation |N−M|≦1 is satisfied, the number of zeros in a continuous zero group is X, the number of non-zeros in a continuous nonzero group is Y, and a relation |X−Y|≦1 is satisfied. A device for sending an upstream transfer frame in a passive optical network is further provided.
    • 本发明涉及无源光网络(PON)技术,并且提供了一种在PON中发送上行传输帧的方法,以提高系统的灵活性,并满足将误差概率降低到低至 可能。 该方法包括:在链路成功之后,根据分配的时隙发送前导码,发送突发同步定界符,然后连续发送突发报头,千兆位能力无源光网络(GPON)传输收敛(GTC)帧报头 ,和GTC帧数据。 在发送的同步分隔符中,非零的数量与零的数目相同,并且在分隔符序列中,奇数位上的非零数等于偶数位上的零数, 偶数位上的非零的数量等于奇数位上的零数,奇数位上的零数为N,奇数位上的非零数为M,关系| N-M |&nlE ; 1满足,连续零组中的零数为X,连续非零组中的非零数为Y,满足关系| X-Y |≦̸ 1。 还提供了一种用于在无源光网络中发送上游传送帧的设备。