Title :
A new family of wavelength-time codes for optical CDMA
Author :
Wang, Tai Chien ; Chang, Cheng Yuan ; Yang, Guu Chang ; Kwong, Wing C.
Author_Institution :
Dept. of Electr. Eng., Nat. Chung-Hsing Univ., Taichung
Abstract :
In this paper, a new family of wavelength-time codes, which is based on (n, w, 1,2) time-spreading optical orthogonal codes (OOCs), is proposed. By having cross-correlation values of at most two, the new two-dimensional (2D) codes provide larger code cardinality to accommodate more subscribers and support heavier code weight to result in better code performance. Under certain conditions, our results show that the new codes outperform other 2D codes that have the cross-correlation values of at most one, such as our previously studied multiple- wavelength OOCs and 2D codes based on (n, w, 2,1) OOCs.
Keywords :
code division multiple access; optical correlation; orthogonal codes; cross-correlation; optical CDMA; time-spreading optical orthogonal code; two-dimensional code; wavelength-time code; Autocorrelation; Bandwidth; Galois fields; Multiaccess communication; Performance analysis;
Conference_Titel :
Wireless and Optical Communications Networks, 2008. WOCN '08. 5th IFIP International Conference on
Conference_Location :
Surabaya
Print_ISBN :
978-1-4244-1979-1
Electronic_ISBN :
978-1-4244-1980-7
DOI :
10.1109/WOCN.2008.4542481
