The Design Of Sequences Pairs Set And Array Pairs Set Based On Interleaving Technique

In the quasi-synchronous CDMA system, the request to adopt the spreading sequence is that the sequence should have perfect correlation properties in the synchronous error (near the zero time delay), the zero-correlation zone (ZCZ) sequence is just fiting for the need. But the design of zero-correlation zone (ZCZ) sequence limited by many conditions, specially the binary ZCZ sequences are few.Sequence pairs and array pairs are two theories which can increase the sequences, they reduce the limited conditions which control the design of sequences and let more sequences satisfy the conditions what the perfect correlation properties in the synchronous error. A new method based on perfect binary sequence pair and array pair for constructing ZCZ sequences pairs set and ZCZ array pais set through interleaved technique is presented. Based on these matters, the paper makes a series of theory study for the ZCZ sequence pair and ZCZ array pair. The main work is just as following:(1)The basic concepts of sequence pair and the correlation properties of the sequence pair are discussed. The basic concepts of array pair and the correlation properties of the array pair are discussed too. In this paper we discussed the ZCZ sequence pair and its properties mainly. The ZCZ array pair and its properties are also discussed primarily. The applications of the sequence pair and array pair in the signal process and communication system are also introduced.(2)The concept of the interleaved sequence is introduced. Based on this concept, a construction method for ZCZ sequence pairs set is presented. Based on perfect binary sequence pair , ZCZ sequence pairs set with certain family size and zero correlation zone can be constructed through interleaved technique. At last its existence is proved and an example is given. (3)Based on perfect binary array pair , ZCZ array pairs set with certain family size and zero correlation zone can be constructed through interleaved technique. At last its existence is proved and an example is given.