Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5771591 | Finite Fields and Their Applications | 2017 | 20 Pages |
Abstract
Let α be a primitive element of a finite field Fr, where r=qm1m2 and gcdâ¡(m1,m2)=d, so α1=αrâ1qm1â1 and α2=αrâ1qm2â1 are primitive elements of Fqm1 and Fqm2, respectively. Let e be a positive integer such that gcdâ¡(e,qm2â1qdâ1)=1, Fqm2=Fq(α2e), and α1 and α2e are not conjugates over Fq. We define a cyclic codeC={c(a,b):aâFqm1,bâFqm2},c(a,b)=(T1(aα1i)+T2(bα2ei))i=0nâ1, where Ti denotes the trace function from Fqmi to Fq for i=1,2. In this paper, we use Gauss sums to investigate the weight distribution of C, which generalizes the results of C. Li and Q. Yue in [13,14]. Furthermore, we explicitly determine the weight distribution of C if d=1,2. Moreover, we prove it is optimal three-weight achieving the Griesmer bound if d=1 and gcdâ¡(m2âem1,qâ1)=1.
Related Topics
Physical Sciences and Engineering
Mathematics
Algebra and Number Theory
Authors
Fengwei Li, Qin Yue, Fengmei Liu,