New Construction of Z-Optimal Type-II Even-Length Quadriphase Z-Complementary Pairs.

Type-II Z-complementary pairs (ZCPs) play an important role in suppressing asynchronous interference in a wideband wireless com-munication system where the minimum interfering-signal delay is large. Based on binary Golay complementary pairs (BGCPs) and interleaving technique, new construction for producing Z-optimal Type-II even-length quadriphase ZCPs (EL-QZCPs) is presented, and the resultant pairs have new lengths in the form of 2 x 2 alpha 10 beta 26 gamma (alpha, beta, gamma non-negative integers), which are not included in existing known Type-II EL-QZCPs.