2010•Radio and communications technologyRequires access

Study on Method of Constructing a Large Zero Correlation Zone Sequence Pairs Set

Xia Hongfa, Liping Xiao, XU Cheng-qian

Abstract

In the quasi-synchronous CDMA systems,use of zero-correlation zone (ZCZ) sequence pairs set can avoid co-channel interference and the multi-access interference.A new method of constructing binary ZCZ sequence pairs set is proposed.The new ZCZ sequence pairs set is constructed by choosing an appropriate orthogonal matrix and using the extended method.A zero-correlation zone with sequence pairs set longer than that of the original ZCZ is generated.Moreover,the new ZCZ sequence pairs set also provides good autocorrelation and cross-correlation performance,and can meet multi-user system requirements.The simulation results show its excellent performance and it's suitable for synchronous CDMA system.

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Key concepts: Sequence (biology), Set (abstract data type), Autocorrelation, Interference (communication), Code division multiple access, Algorithm, Pseudorandom binary sequence, Zero (linguistics)