Optimal p2-ary Low Correlation Zone Sequences Using Unified Sequences

In this paper, given an integer e and n such that e|n, and a prime p, we propose a method of constructing optimal p²-ary low correlation zone (LCZ) sequence set with parameters (pⁿ - 1,p ^e - 1, (pⁿ - 1)/(p - 1), 1) from a p-ary sequence of the same length with ideal autocorrelation. The resulting p² -ary LCZ sequence set can be viewed as the generalization of the optimal quaternary LCZ sequence set by Kim, Jang, No, and Chung in respect of the alphabet size. But the method used in the proof is quite different from that used in the quaternary LCZ sequence. The proof used in this paper can be used for the proof of quaternary LCZ sequence