Performance analysis of optical atmospheric Turbo-coded 2-D CDMA systems with PPM signaling

Author

Luu, Tu A. ; Dang, Ngoc T. ; Pham, Anh T.

Author_Institution

Grad. Dept. of Comput. & Inf. Syst., Univ. of Aizu, Aizu-Wakamatsu, Japan

fYear

2010

fDate

15-18 June 2010

Firstpage

1

Lastpage

6

Abstract

This paper proposes Turbo code for optical atmospheric 2-dimensional (2-D) CDMA systems using pulse-position modulation (PPM) signaling. The system performance is theoretically analyzed and the upper bound of bit-error rate (BER) is derived considering the impact of scintillation. The analysis also takes into account various types of interferences and noises such as multiple access interference (MAI), optical beating interference (OBI), and receiver noise. It is shown that system performance is significantly improved when Turbo codes is employed. In particular, the use of Turbo code results in a power gain of 3.5 dB at the BER = 10^-7, the supportable number of users is also increased.

Keywords

code division multiple access; error statistics; optical communication; pulse position modulation; radiofrequency interference; turbo codes; 2D CDMA system; BER; PPM signaling; bit error rate; code division multiple access; multiple access interference; optical atmospheric turbo codes; pulse position modulation; Bit error rate; Interference; Multiaccess communication; Optical modulation; Optical noise; Optical receivers; Performance analysis; Pulse modulation; System performance; Turbo codes; 2-D CDMA; PPM; Turbo code; optical atmospheric;

fLanguage

English

Publisher

ieee

Conference_Titel

Information and Telecommunication Technologies (APSITT), 2010 8th Asia-Pacific Symposium on

Conference_Location

Kuching

Print_ISBN

978-1-4244-6413-5

Electronic_ISBN

978-4-88552-244-4

Type

conf

Filename

5532065