Constructions of Codebooks Asymptotically Achieving the Welch Bound With Additive Characters

Constructions of Codebooks Asymptotically Achieving the Welch Bound With Additive Characters
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渐近实现具有可加字符的 Welch 界的密码本的构造

DOI:
10.1109/lsp.2019.2891896
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发表时间:
2019-01
影响因子:
3.9
通讯作者:
Xu Chengqian
Xu Chengqian
中科院分区:
工程技术2区
文献类型:
--
作者:
Tian Liying;Li Yubo;Liu Tao;Xu Chengqian

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具有较小内积相关性的码本在直接扩频码分多址通信、信号处理、压缩感知等领域有着广泛的应用。这是非常困难的,以产生最佳的码书相对于韦尔奇界或莱文斯坦界。这封信的重点是构造渐近最优码书与有限域的可加字符。根据所提出的构造,得到了两类关于Welch界的渐近最优码本。此外,所得到的码本可以具有小的字母大小。
Codebooks with small inner product correlation have wide applications in many fields, such as direct spread code-division multiple access communications, signal processing, and compressed sensing. It is extremely hard to produce optimal codebooks with respect to the Welch bound or the Levenstein bound. This letter focuses on constructing asymptotically optimal codebooks with additive characters of finite fields. Following the proposed constructions, two classes of asymptotically optimal codebooks with respect to the Welch bound are obtained. In addition, the resulting codebooks could have a small alphabet size.
通过超爱森斯坦和构造渐近最优码本的两种方法
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