New Construction of Asymptotically Optimal Low Ambiguity Zone Sequence Sets
Zheng Wang, Bingsheng Shen, Yang Yang, Zhengchun Zhou · IEEE Signal Processing Letters · 2025
Sequences with low ambiguity zone (LAZ) properties are employed in integrated sensing and communication (ISAC) systems. In this letter, we introduce a new class of LAZ sequence sets based on cubic sequences. The proposed LAZ sequence set is asymptotically optimal with respect to the Ye-Zhou-Fan-Liu-Lei-Tang (YZFLLT) bound when the sequence length is odd. Otherwise, it achieves$\sqrt{2}$times of the YZFLLT bound. Furthermore, the sequence sets provide flexible choices for the sequence lengths, set size, and the LAZ region.