Constacyclic codes over Fq2[u]/⟨u2-w2⟩ and their application in quantum code construction

Tushar Bag, Hai Q. Dinh, Kanat Abdukhalikov, Ashish K. Upadhyay, Woraphon Yamaka

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


Let q be an odd prime power, and w be a generator of the multiplicative cyclic group Fq2∗. In this work, we study constacyclic codes over R=Fq2+uFq2(u2=w2), and show a construction of quantum codes by studying the Hermitian construction over R. To do that, we discuss the σ-inner product over any finite commutative Frobenius ring and using that we define the Hermitian inner product over R. We decompose the ring R by constructing a pairwise orthogonal idempotent and study linear codes. We present the units of R and using them we study constacyclic codes and their generators over R. We also provide a condition for a constacyclic code to contain its Hermitian dual over this ring. Finally, we constructed some codes, which have improved parameters than some of the recently constructed codes in the literature. We also present a table of codes, which have better parameters than those currently available in the online database.

Original languageEnglish
Pages (from-to)3821-3834
Number of pages14
JournalJournal of Applied Mathematics and Computing
Issue number6
Publication statusPublished - Dec 2022


  • Constacyclic codes
  • Hermitian dual
  • Quantum error-correcting codes

ASJC Scopus subject areas

  • Computational Mathematics
  • Applied Mathematics


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