  A method for constructing sets of sequences with zero-correlation zone (ZCZ
sequences) and sequence sets with low cross correlation is proposed. The method
is to use families of short sequences and complete orthogonal sequence sets to
derive families of long sequences with desired correlation properties. It is a
unification of works of Matsufuji and Torii \emph{et al.}, and there are more
choices of parameters of sets for our method. In particular, ZCZ sequence sets
generated by the method can achieve a related ZCZ bound. Furthermore, the
proposed method can be utilized to derive new ZCZ sets with both longer ZCZ and
larger set size from known ZCZ sets. These sequence sets are applicable in
broadband satellite IP networks.
