Title :
Zero-cross-correlation properties of asymmetric ZCZ sequence sets
Author :
Omata, Kosuke ; Torii, Hideyuki
Author_Institution :
Grad. Sch. of Eng., Kanagawa Inst. of Technol., Japan
Abstract :
The present paper proposes a new formula for the zero-cross-correlation zone length between sequences belonging to different sequence subsets in asymmetric zero-correlation zone (ZCZ) sequence sets. An asymmetric ZCZ sequence set is composed of multiple sequence subsets, and the cross-correlation function between sequences that belong to different subsets gives an extremely large zero-cross-correlation zone length. However, the length of this zero-cross-correlation zone was not precisely clarified in previous studies. In the present paper, we clarify them. By using the proposed formula, we can enlarge the cell radius of an AS-CDMA system compared with that described in previous studies.
Keywords :
cellular radio; code division multiple access; orthogonal codes; sequences; AS-CDMA system; asymmetric ZCZ sequence sets; asymmetric zero-correlation zone sequence sets; cross-correlation function; multiple sequence subsets; orthogonal code; zero-cross-correlation zone length; Base stations; Correlation; Interchannel interference; Multiaccess communication; Synchronization; Upper bound; AS-CDMA; Asymmetric ZCZ sequence sets; Zero-cross-correlation zone;
Conference_Titel :
Signal Design and its Applications in Communications (IWSDA), 2011 Fifth International Workshop on
Conference_Location :
Guilin
Print_ISBN :
978-1-61284-047-5
DOI :
10.1109/IWSDA.2011.6159431
