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    • 5. 发明公开
    • Decoding method for block codes used for the purpose of channel coding
    • DecodierungsverfahrenfürBlockcodes,die zur Kanalcodierung benutzt werden
    • EP1246370A1
    • 2002-10-02
    • EP01302867.5
    • 2001-03-28
    • LUCENT TECHNOLOGIES INC.
    • Bayer, Ludwig Dr.Buerner, ThomasDohmen, Ralf
    • H03M13/15H03M13/45
    • H03M13/154H03M13/153H03M13/455
    • The invention relates to decoding an algebraic block code used for the purpose of channel coding. One object of the invention is to indicate an efficient way, which is simplified by comparison with the prior art, for decoding algebraic block codes used for channel coding for digital data transmission. The invention proposes for this purpose a method, a receiving device and a computer program in such a way that a received word (r) is sampled at predeterminable interpolation points (α 0 , ..., α n-1 ) in order to obtain symbols (r 0 , ...,. r n-1 ) contained in the received word (r), coefficients (R 1 ) for the purpose of forming a syndrome polynomial (R [1] (X)) are obtained by applying a discrete Fourier transformation to the symbols (r 0 ,...,. r n-1 ) and an error position search is carried out on the basis of the syndrome polynomial (R [1] (X)) with the defined introduction of erasures.
    • 本发明涉及解码用于信道编码目的的代数块码。 本发明的一个目的是指示一种有效的方式,其通过与现有技术的比较来简化,用于解码用于数字数据传输的信道编码的代数块码。 本发明为此目的提出一种方法,接收装置和计算机程序,使得接收到的字(r)在可预先确定的插值点(α0,...,α)处被采样, 为了获得包含在接收字(r)中的符号(r0,...,r ),为了形成校正子多项式(R <Ä1Ü)< 通过对符号(r 0,...,r )应用离散付里叶变换来获得错误位置搜索,并且基于校正子多项式(R < Ä1Ü>(X))与定义的擦除引入。
    • 7. 发明公开
    • DECODING METHOD AND DECODER
    • DECODIERUNGSVERFAHREN UND DECODIERER
    • EP3171520A4
    • 2017-08-02
    • EP14899052
    • 2014-07-31
    • HUAWEI TECH CO LTD
    • LI MOYU FANXIAO ZHIYU
    • H03M13/29H03M13/15H03M13/37H03M13/45
    • H03M13/3746H03M13/152H03M13/2906H03M13/2927H03M13/2948H03M13/2963H03M13/2975H03M13/3707H03M13/3715H03M13/455
    • Embodiments of the present invention provide a decoding method and a decoder. The decoding method includes: after performing soft-decision decoding at least once on multiple codewords, determining whether a decoding result of soft-decision decoding meets a switching condition for switching to hard-decision decoding; and if the switching condition is not met, continuing to use soft-decision decoding during next decoding; or if the switching condition is met, switching to hard-decision decoding during next decoding, and always using hard-decision decoding during subsequent decoding until a decoding iteration is quit. In this way, when a decoding result of soft-decision decoding meets a specific condition, decoding can switch to hard-decision decoding that requires lower power consumption, and continual use of soft-decision decoding that requires higher power consumption can be avoided, thereby reducing power consumption of a decoder without impairing decoding performance.
    • 本发明的实施例提供了一种解码方法和解码器。 所述解码方法包括:在对多个码字进行至少一次软判决解码之后,判断软判决解码的解码结果是否满足切换至硬判决解码的切换条件; 如果不满足切换条件,则在下一次解码期间继续使用软判决解码; 或者如果满足切换条件,则在下一次解码期间切换到硬判决解码,并且在随后的解码期间始终使用硬判决解码直到解码迭代退出。 这样,当软判决解码的解码结果满足特定条件时,解码可以切换到需要较低功耗的硬判决解码,并且可以避免继续使用需要较高功耗的软判决解码,由此 降低解码器的功耗而不影响解码性能。
    • 10. 发明专利
    • Encoding device, decoding device, and encoding/decoding device and recording/reproducing device
    • 编码设备,解码设备和编码/解码设备和记录/再现设备
    • JP2008136173A
    • 2008-06-12
    • JP2007234267
    • 2007-09-10
    • Fujitsu Ltd富士通株式会社
    • ITO TOSHIO
    • H03M13/29G11B20/10G11B20/18
    • G11B20/1803G11B20/1866H03M13/098H03M13/11H03M13/15H03M13/27H03M13/29H03M13/2909H03M13/45H03M13/453H03M13/455H03M13/6343
    • PROBLEM TO BE SOLVED: To provide an encoding/decoding device which corrects errors by concatenated codes of an ECC code and a parity code to prevent an increase in the circuit scale and to improve error correction performance. SOLUTION: Provided are encoders (235, 234), which create a concatenation type encoded data by interleaving a data string into a plurality of blocks at every m (m≥2) bit, adding a parity of an error correcting code and adding a parity bit at every predetermined number (m×n) of bits, to prevent an increase in the circuit scale even if the data string is interleaved into a plurality of blocks, and a parity of error correcting code is generated. Also provided are ECC decoding circuits (230, 227, 233) which correct an ECC decoded data string using the likeliness of a soft output decoder and parity check result, so a deterioration of correction performance can also be prevented. COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:提供一种编码/解码装置,其通过ECC代码和奇偶校验码的级联代码校正错误,以防止电路规模的增加并改善纠错性能。 提供了编码器(235,234),其通过在每m(m≥2)位处将数据串交织成多个块来创建级联类型编码数据,添加纠错码的奇偶校验和 以每个预定数量(m×n)个比特添加奇偶校验位,以防止数据串被交织到多个块中而增加电路规模,并产生纠错码的奇偶校验。 还提供了使用软输出解码器的可能性和奇偶校验结果校正ECC解码数据串的ECC解码电路(230,227,233),因此也可以防止校正性能的劣化。 版权所有(C)2008,JPO&INPIT