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    • 2. 发明授权
    • Fast encoding and decoding methods and related devices
    • 快速编码和解码方法及相关设备
    • US08214723B2
    • 2012-07-03
    • US12223109
    • 2007-01-18
    • Jean-Baptiste DoreMarie-Hélène HamonPierre Penard
    • Jean-Baptiste DoreMarie-Hélène HamonPierre Penard
    • H03M13/00
    • H03M13/2972H03M13/1194H03M13/2771H03M13/2978H03M13/6566
    • A method of low latency encoding of an input bit sequence (S0) to yield an encoded bit sequence (S), and a corresponding decoding method, said encoding method including: a first encoding step (E1) applied to bits of the input bit sequence (S0), using a first code; an interleaving step (E3) in which an interleaver interleaves the bits obtained from said first code; and a parity, second encoding step (E4) applied to the bits obtained from said interleaver, using a second code, to generate said encoded bit sequence (S). The parity, second encoding step (E4) starts after a predetermined number Δ of bits have been interleaved, said predetermined number Δ of bits ranging between a first lower number Δi of bits depending on one or more parameters of said interleaving step (E3) and a first higher number Δs of bits corresponding to the total number of bits to be processed during said interleaving step (E3).
    • 一种输入比特序列(S0)的低延迟编码以产生编码比特序列(S)的方法和相应的解码方法,所述编码方法包括:第一编码步骤(E1),其应用于输入比特序列 (S0),使用第一代码; 交织步骤(E3),其中交织器交织从所述第一码获得的比特; 以及使用第二代码应用于从所述交织器获得的比特的奇偶校验第二编码步骤(E4),以生成所述编码比特序列(S)。 奇偶校验第二编码步骤(E4)在预定数量&Dgr之后开始; 的位已被交织,所述预定数量&Dgr; 根据所述交织步骤(E3)的一个或多个参数和与在所述交织步骤期间要处理的总位数相对应的比特的第一较高数目&Dgr比特,位于第一较低数字& (E3)。
    • 8. 发明授权
    • Unified serial/parallel concatenated convolutional code decoder architecture and method
    • 统一串行/并行级联卷积码解码器架构与方法
    • US07200798B2
    • 2007-04-03
    • US10608831
    • 2003-06-26
    • Mark Andrew Bickerstaff
    • Mark Andrew Bickerstaff
    • H03M13/03
    • H03M13/3905H03M13/2957H03M13/2972H03M13/2978H03M13/395H03M13/6511
    • A turbo decoder having two modes of operation decodes received information as per an N-state Radix-K trellis where N and K are integers equal to 1 or greater. The turbo decoder uses an in-line addressing technique that allows it to operate as a Serial Convolutional Code decoder in the first mode of operation and a Parallel Convolutional Code decoder in the second mode of operation. The decoder uses an in line addressing technique that allows it to use the same block of memory to store and retrieve states of the trellis as it processes received information. The turbo decoder can also operate as per an N-state Radix-K trellis where N is an integer equal to 2 or greater and K is an integer equal to 4 or greater.
    • 具有两种操作模式的turbo解码器根据N状态的基数K格网解码接收到的信息,其中N和K是等于1或更大的整数。 turbo解码器使用在线寻址技术,其允许其在第一操作模式中作为串行卷积码解码器操作,并且在第二操作模式中使用并行卷积码解码器。 解码器使用在线寻址技术,允许它在处理接收到的信息时使用相同的存储器块来存储和检索格状态。 turbo解码器也可以按照N状态的基数K网格进行操作,其中N是等于2或更大的整数,K是等于4或更大的整数。
    • 9. 发明申请
    • Method of maximum a posterior probability decoding and decoding apparatus
    • 最大后验概率解码和解码装置的方法
    • US20060265635A1
    • 2006-11-23
    • US11232361
    • 2005-09-21
    • Atsuko TokitaHidetoshi ShirasawaMasakazu Harata
    • Atsuko TokitaHidetoshi ShirasawaMasakazu Harata
    • H03M13/03
    • H03M13/3972H03M13/2957H03M13/2978
    • When an information length N is divided by a division length L, if the number of divisions including the remainder is 2n, then backward probabilities are calculated from the Nth backward probability in the reverse direction to the (n+1)th section and backward probabilities at division points are stored as discrete values, and in parallel with these backward probability calculations, forward probabilities are calculated from the first forward probability in the forward direction to the nth section and the forward probabilities at division points are stored as discrete values. Subsequently, the backward probabilities and forward probabilities stored as discrete values are used to calculate backward probabilities and forward probabilities for each section, and using these probabilities, decoding results are calculated in sequence for all sections.
    • 当信息长度N除以分割长度L时,如果包括余数的分割数为2n,则从与第(n + 1)部分相反的第N个后向概率计算后向概率,并且反向概率 在分割点被存储为离散值,并且与这些后向概率计算并行地,从向前方向的第一前向概率到第n个部分计算前向概率,并将分割点处的前向概率存储为离散值。 随后,使用作为离散值存储的反向概率和向前概率来计算每个部分的后向概率和向前概率,并且使用这些概率,对于所有部分按顺序计算解码结果。
    • 10. 发明授权
    • Recursive decoder for switching between normalized and non-normalized probability estimates
    • 用于在归一化和非归一化概率估计之间切换的递归解码器
    • US07120851B2
    • 2006-10-10
    • US10649785
    • 2003-08-28
    • Yu Jing TingNoriyoshi ItoHiroshi Katsuragawa
    • Yu Jing TingNoriyoshi ItoHiroshi Katsuragawa
    • H03M13/00H03M13/03
    • H03M13/3927H03M13/2978
    • The present invention relates generally to error-correction coding and, more particularly, to a decoder for concatenated codes, e.g., turbo codes. The present invention provides a decoder for decoding encoded data, the decoder comprising: a processor having an input which receives probability estimates for a block of symbols, and which is arranged to calculates probability estimates for said symbols in a next iterative state; normalising means which normalises said next states estimates; a switch that receives both said normalised and said unnormalised next state estimates, the output of the switch being coupled to the input of the processor; wherein the switch is arranged to switch between the normalised and unnormalised next state estimates depending on the iterative state.
    • 本发明一般涉及纠错编码,更具体地说,涉及用于级联码(例如,turbo码)的解码器。 本发明提供了一种用于对编码数据进行解码的解码器,该解码器包括:一个处理器,具有一个输入,该输入接收一个符号块的概率估计,并且被配置为在下一个迭代状态下计算所述符号的概率估计; 规范化所述下一状态估计的正规化装置; 接收所述归一化和所述非标准化下一状态估计的开关,所述开关的输出耦合到所述处理器的输入; 其中所述开关被布置为根据迭代状态在归一化和非标准化的下一状态估计之间切换。