上海计算技术研究所
纸质出版:1982
移动端阅览
[1]冯贵良.判别GF(2~m)上k次多项式在GF(2~m)上有k个不同根的新方法[J].电子学报,1982(06):1-5.
Feng Gui-liang. A New Method for Judging whether a Polynomial of Degree k over GF(2m) Has k Distinct Roots in GF(2m)[J]. Acta Electronica Sinica, 1982, (6): 1-5.
在二元BCH码的完全译码中
判别一个GF(2
m
)上的k次多项式是否在GF(2
m
)上有k个不同根
是十分重要的问题。本文提出一种新的普遍方法
它适用于一切k和m。这个方法仅需要O(m·k
2
)次GF(2
m
)上的加法和乘法。特别当k=2时
本文的方法就等价于对tr(σ
2
/σ
1
2
)=0的判别。
In the complete decoding of binary BCH codes
it is very important to judge whether or not a polynomial of degree k over GF(2m) has k distinct roots in GF (2m)[1]. This paper presents a new method which can be used for all k and m. This method requires only O(m·k2) times of addition or multiplication over GF(2m) to judge whether or not a polynomial of degree k has k distinct roots in GF (2m). In particular
when k = 2
this method is equivalent to judgement for tr(σ2/σ12) = 0.
0
浏览量
19
下载量
0
CSCD
关联资源
相关文章
相关作者
相关机构
京公网安备11010802024621