Abstract
We obtained all possible parameters of Plotkin-optimal two-Lee weight projective codes over \(\mathbb {Z}_4,\) together with their weight distributions. We show the existence of codes with these parameters as well as their weight distributions by constructing an infinite family of two-weight codes. Previously known codes constructed by Shi et al. (Des Codes Cryptogr 88(12): 2493–2505, 2020) can be derived as a special case of our results. We also prove that the Gray image of any Plotkin-optimal two-Lee weight projective codes over \(\mathbb {Z}_4\) has the same parameters and weight distribution as some two-weight binary projective codes of type SU1 in the sense of Calderbank and Kantor (Bull Lond Math Soc 18: 97–122, 1986).
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Acknowledgements
The authors thank two anonymous referees for their meticulous reading of the manuscript. Their suggestions have been very valuable in improving the presentation of this paper. This research is supported by Institut Teknologi Bandung (ITB) and the Ministry of Education, Culture, Research, and Technology (Kementerian Pendidikan, Kebudayaan, Riset, dan Teknologi (Kemdikbudristek)), Republic of Indonesia.
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Communicated by J.-L. Kim.
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Tang, H.C., Suprijanto, D. A general family of Plotkin-optimal two-weight codes over \(\mathbb {Z}_4\). Des. Codes Cryptogr. 91, 1737–1750 (2023). https://doi.org/10.1007/s10623-022-01176-3
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DOI: https://doi.org/10.1007/s10623-022-01176-3