Weight distribution of two classes of cyclic codes with respect to two distinct order elements
arXiv:1306.5277
Abstract
Cyclic codes are an interesting type of linear codes and have wide applications in communication and storage systems due to their efficient encoding and decoding algorithms. Cyclic codes have been studied for many years, but their weight distribution are known only for a few cases. In this paper, let be an extension of a finite field and , we determine the weight distribution of the cyclic codes $$c(a, b)=(\mbox {Tr}_{r/q}(ag_1^0+bg_2^0), \ldots, \mbox {Tr}_{r/q}(ag_1^{n-1}+bg_2^{n-1})), g_1, g_2\in \Bbb F_r,$$ in the following two cases: (1) $\ord(g_1)=n, n|r-1$ and ; (2) $\ord(g_1)=n$, , $\ord(g_2)=\frac n 2$, and .