Character sums over a non-chain ring and their applications
Character sums over a non-chain ring and their applications
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DOI:
10.3934/amc.2020134
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发表时间:
2023
期刊:
影响因子:
--
通讯作者:
Liqin Qian;X. Cao
中科院分区:
文献类型:
--
作者:
Liqin Qian;X. Cao
Some valuable results over rings have a promising utilization in coding theory and error-correcting code theory. In this paper, we study character sums over a certain non-chain ring and their applications in codebooks. There are two major ingredients in this study. The first ingredient is to investigate Gaussian sums, hyper Eisenstein sums, Jacobi sums over a certain non-chain ring and study the properties of these character sums. For their applications, the second ingredient is to present three classes of asymptotically optimal codebooks with respect to the Welch bound and a family of optimal codebooks with respect to the Levenshtein bound, which are constructed from character sums over a certain non-chain ring.