Fengwei Li

activity

20132024

collaborators

3 papers

cs.IT2024

Generator polynomials of cyclic expurgated or extended Goppa codes

Xue Jia, Fengwei Li, Huan Sun +1

Classical Goppa codes are a well-known class of codes with applications in code-based cryptography, which are a special case of alternant codes. Many papers are devoted to the sear…

cs.IT2019

A class of functions with low-valued Walsh spectrum

Fengwei Li, Yansheng Wu, Qin Yue

Let $l \equiv 3 (mod 4)$ , $l \neq = 3$ , be a prime, $N = l^{2}$ , $f = \frac{l ( l - 1 )}{2}$ the multiplicative order of a prime $p$ modulo $N$ , and $q = p^{f}$ . In this paper, we investigate the Walsh s…

cs.IT2013

Weight distributions of cyclic codes with respect to pairwise coprime order elements

Chengju Li, Qin Yue, Fengwei Li

Let $F_{r}$ be an extension of a finite field $F_{q}$ with $r = q^{m}$ . Let each $g_{i}$ be of order $n_{i}$ in $F_{r}^{*}$ and $g cd (n_{i}, n_{j}) = 1$ for $1 \leq i \neq = j \leq u$ . We de…