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    • 32. 发明授权
    • Accelerated Reed-Solomon error correction
    • 加速里德 - 所罗门纠错
    • US06539515B1
    • 2003-03-25
    • US09449230
    • 1999-11-24
    • Jian Gong
    • Jian Gong
    • H03M1300
    • H03M13/1545H03M13/1515H03M13/158H03M13/1585
    • A Reed-Solomon (R-S) decoder is presented that simultaneously searches for m roots of the error locator polynomial and the error magnitude polynomial. A polynomial evaluator includes a plurality of slice elements corresponding to each term of the polynomial. Each slice element includes a plurality of coefficient multipliers that are configured to evaluate the term for different values, thereby effecting a simultaneous evaluation of the polynomial at each of these different values. In a preferred embodiment, only one register is required in each slice element for receiving the coefficients of the polynomial and for facilitating an iterative evaluation of the polynomial for other values. In a preferred embodiment, two polynomial evaluators are employed for decoding a Reed-Solomon codeword. One evaluator is used to provide a modified form of the Chien error locator algorithm, and the other is used to provide a modified form of the Forney error determination algorithm.
    • 提出了一种Reed-Solomon(R-S)解码器,同时搜索误差定位多项式的m个根和误差幅度多项式。 多项式评估器包括与多项式的每个项对应的多个切片元素。 每个切片元件包括多个系数乘法器,其被配置为评估不同值的项,从而实现在这些不同值中的每一个处的多项式的同时评估。 在优选实施例中,在每个片元件中仅需要一个寄存器用于接收多项式的系数,并且便于对其它值的多项式的迭代评估。 在优选实施例中,使用两个多项式评估器来解码里德 - 所罗门码字。 一个评估者用于提供Chien错误定位器算法的修改形式,另一个用于提供Forney错误确定算法的修改形式。