Design of Two-Dimensional Wavelength-Time Codes for Fiber-Optic CDMA Systems

Author

Tsai, Chia-Hao ; Liao, Tzu-Yi ; Chang, Cheng-Yuan ; Yang, Guu-Chang ; Kwong, Wing C.

Author_Institution

Dept. of Electr. Eng., Nat. Chung-Hsing Univ., Taichung, Taiwan

fYear

2009

fDate

14-18 June 2009

Firstpage

1

Lastpage

4

Abstract

In this paper, a new family of two-dimensional (2D) wavelength-time codes, which uses one-dimensional (1D) optical orthogonal codes (OOCs) with the maximum cross-correlation value of two as the time-spreading codes is proposed and analyzed. By relaxing the cross-correlation functions to at most two, the new 2D codes can provide larger code cardinality to accommodate more subscribers. They also have better performance than 1D optical codes because they can support heavier code weight, for a given code length. Moreover, our numerical examples show that the heavier code weight supported by our new 2D codes results in better performance than some of our previously proposed 2D codes, which have the maximum cross- correlation value of one.

Keywords

code division multiple access; orthogonal codes; wavelength division multiplexing; fiber-optic CDMA system; maximum cross-correlation value; one-dimensional optical orthogonal code; time spreading code; two-dimensional wavelength-time code; Autocorrelation; Communications Society; Galois fields; Multiaccess communication; Optical fiber communication; Performance analysis; Synchronous generators;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, 2009. ICC '09. IEEE International Conference on

Conference_Location

Dresden

ISSN

1938-1883

Print_ISBN

978-1-4244-3435-0

Electronic_ISBN

1938-1883

Type

conf

DOI

10.1109/ICC.2009.5198904

Filename

5198904