Title :
The New Construction of ZCZ Sequences Based on Interleaved Perfect Sequences
Author :
Longye, Wang ; Xiaoli, Zeng ; Yongfeng, Li
Author_Institution :
Sch. of Eng., Tibet Univ., Lhasa, China
Abstract :
In this paper, we introduce a new construction of optimal or almost optimal ZCZ sequence sets of size N and length LN based on interleaving N length-L perfect sequences. As our key contributions, a new construction of such optimal or almost optimal shift sequences, for 1Ltd=gcd(L,N)LtN and gcd(L, N/d)=1, our constructed shift sequences lead to almost optimal ZCZ sequence sets of size N and length LN if length-L perfect sequence and NtimesN orthogonal matrix exist.
Keywords :
code division multiple access; matrix algebra; sequences; N length-L perfect sequences; QS-CDMA systems; ZCZ sequences; interleaved perfect sequences; optimal shift sequences; orthogonal matrix; quasisynchronous CDMA system; Autocorrelation; Availability; Control systems; Delay effects; Information technology; Interference elimination; Interleaved codes; Multiaccess communication; Multiple access interference; Interleaving Technique; Orthogonal Transforms; Perfect Sequence; ZCZ Sequence;
Conference_Titel :
Information Technology and Applications, 2009. IFITA '09. International Forum on
Conference_Location :
Chengdu
Print_ISBN :
978-0-7695-3600-2
DOI :
10.1109/IFITA.2009.222
