Title :
Study on the Design of LAS Code in the LAS-CDMA
Author :
Mo, Kai ; He, Hong ; Li, Li ; Zhu, Xianwei
Author_Institution :
Inst. of Economic Reform, Tianjin, China
Abstract :
The paper mainly studies the designs of LA, LS and LAS codes. Then it makes simulation for theirs auto-correlation functions and cross-correlation functions. Simulation and analysis show that, LAS code has zero cross-correlation in the "zero interference window", and has only an impulse auto-correlation in the "zero interference window", and these excellent features help to eliminate ACI, MAI and ISI, thus it increases the system capacity largely. So it has more large potential than traditional codes.
Keywords :
code division multiple access; codes; interference; LA code; LS code; auto-correlation functions; cross-correlation functions; large area synchroniged code; large area synchroniged-CDMA; zero cross-correlation; zero interference window; Autocorrelation; Control theory; Information technology; Interference elimination; Intersymbol interference; Laboratories; Multiaccess communication; Multiple access interference; Paper technology; Spread spectrum communication; LA code; LAS code; LS code; auto-correlation function; cross-correlation function;
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.2009.569