Title :
A New Scheme for Constructing High Code Efficiency LS ZCW Multiple Access Codes
Author :
Yu, Zheng ; Yang, Xing ; Li, Daoben
Author_Institution :
Sch. of Inf. Eng., Beijing Univ. of Posts & Telecommun.
Abstract :
New zero correlation window (ZCW) LS (loosely synchronous) codes derived from basic LS codes are constructed. A general scheme for generating these codes is also discussed. It is showed mathematically that these new codes have a uniform ZCW for both aperiodic auto-correlation function (ACF) and cross-correlation function (CCF) within one group. Moreover, the minimum ZCW among different groups is the same as that of basic LS codes. The number of these new codes is more than the basic LS codes, and code efficiency can be greatly enhanced. Finally, the computer simulations verify the validity of new LS codes.
Keywords :
codes; multi-access systems; aperiodic autocorrelation function; computer simulations; cross-correlation function; high code efficiency; loosely synchronous codes; multiple access codes; zero correlation window; Autocorrelation; Binary trees; Computer simulation; Concatenated codes; Intersymbol interference; Silicon compounds;
Conference_Titel :
Communications and Networking in China, 2006. ChinaCom '06. First International Conference on
Conference_Location :
Beijing
Print_ISBN :
1-4244-0463-0
Electronic_ISBN :
1-4244-0463-0
DOI :
10.1109/CHINACOM.2006.344710
