1) double cyclic codes
双环循环码
1.
In this paper,we first introduce the conception of quasi-cyclic codes,then thoroughly study the method of constructing quasi-cyclic codes,and finally discuss the connection between quasi-cyclic codes and double cyclic codes and the implementing method of double cyclic codes encoding circuit.
文章首先简述了准循环码的概念,然后较为深入地研究了准循环码生成方法,最后讨论了双环循环码与准循环码的关系及其编码的电路实现。
2) biorthogonal cyclic codes
双正交循环码
1.
Performance analysis of an M-ary spread spectrum receiver using biorthogonal cyclic codes;
一种双正交循环码M元扩频接收机性能分析
3) double cyclic rings
双循环环
4) cyclic code
循环码
1.
Some properties of a kind of cyclic code over F_2+uF_2;
四元素环F_2+uF_2上一类循环码的性质
2.
Spectral representation of cyclic codes over Z_q of length N=p~kn;
Z_q上长为p~kn的循环码的谱表示
3.
The software method to realize cyclic code s changing in absolute pulse generator;
绝对式脉冲发生器中循环码转换的软件实现法
5) cycle rolling chains
循环链码
1.
SMT-720 cycle rolling chains simulating load checking device;
SMT-720循环链码模拟载荷检验装置
6) quasi-cyclic code
准循环码
1.
It is shown that a code of the length n over F_p+uF_p+…+u~kF_p is linear if and only if its Gray image is linear,and a code of the length n is cyclic if and only if its Gray image is a quasi-cyclic code over F_p of the index p~(k-1) and the length p~k n.
定义了环(Fp+uFp+…+ukFp)n到Fppkn的一个Gray映射;给出Gray映射的几个性质,证明环Fp+uFp+…+ukFp上的长为n的线性码的Gray像仍是线性码;及该环上长为n的(1-uk)-循环码的Gray像是域Fp上的长为pkn、指数为pk-1的准循环码。
2.
It is also shown that the generalized Gray map image of the((1-p~k)-cyclic) code is a distance-invariant(not necessarily linear) quasi-cyclic code.
文章引入了Zpk+1码和Zp2码之间的等距同构kφ(k≥1);利用kφ把G ray映射∶Zn4→F22n推广为∶Znpk+1→ZPpkn(p为素数);而且利用kφ,负循环码概念被推广到Zpk+1码,得到了(1-pk)-循环码;依据等距同构φk,给出了这些码的表示;也证明了(1-pk)-循环码在推广的G ray映射下的像是距离不变(不一定是线性的)的准循环码。
3.
A necessary and sufficient condition for the Gray image of quasi-cyclic code to be cyclic is given.
最后,证明了码C是环Zp[u]/(um-1)上一个循环码的充分必要条件为它的Gray映射下的像是一个准循环码。
补充资料：循环码
见分组码。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条