Abstract:

A new construction of ZCZ(Zero Correlation Zone)sequence pairs set is presented. It can be used in AS CDMA (Approximately Synchronized Code Division Multiply Access) system for the reduction or elimination of the multipath interference and multiple access inter access interference of the system. Based on ternary perfect sequence pairs and orthogonal matrix pairs (binary or ternary), the initial ZCZ sequence pairs set, the performance parameter of which could achieve Theory Circle, is constructed. Then extend the constructed ZCZ sequence pairs set by multiplying with unequal vectors after shifting, we get a class ZCZ sequence pairs set. The number of sequence pairs and the length of zero are related to parameters, different ZCZ sequence pairs sets can be obtained by setting parameters.

Key words: approximately synchronized code division multiply access （AS CDMA）, perfect sequence pairs, orthogonal matrix pairs, zero correlation zone （ZCZ）sequence pairs set