“…Considering C = {C 0 , C 1 , C 2 , C 3 } as a (4, 4, N )-CCC, the search results can be found in Table III, where each element represents a power of (−1). The search results are important in itself, because in recent results [23]- [25], we observe that for a (K, M, N ) mutually orthogonal sequence set, through systematic construction, the maximum achievable K/M ratio is 1/2, when N is not in the form of 2 m . However, for our case, although N is not in the form of power-of-two, since the sequence sets are CCC (i.e., K = M ), the K/M ratio is 1.…”