Constructions of Even-Period Binary Z-Complementary Pairs With Large ZCZs

The lengths of binary Golay complementary pairs are limited to 2
^α
10
^β
26
^γ
, where α, ß, γ ∈ {0, 1, 2, . . .}. This weakness is repaired by the Z-complementary pairs (ZCPs). In this letter, by concatenating several different complementary pairs of length 2
^m
, we present a construction of even-period binary ZCPs of length N = 2
^{m+ 3}
+ 2
^{m+ 2}
+ 2
^{m+ 1}
with zero-correlation zone (ZCZ) width Z = 2
^{m+ 3}
. We also propose another construction of ZCPs of length N' with larger ZCZ width Z = 6N'/7.