Performance analysis of optical CDMA systems with turbo coding scheme

Author

Kim, Eun Cheol ; Cho, Bong Youl ; Seo, Sung Il ; Kim, Jin Young

Author_Institution

Dept. of Wireless Commun. Eng., Kwang Univ., Seoul, South Korea

fYear

2009

fDate

28-30 Sept. 2009

Firstpage

996

Lastpage

997

Abstract

In this paper, we propose and analyze an turbo coding scheme for optical CDMA systems. It is assumed that optical channel is an intensity modulated (IM) channel and direct-detection scheme is employed to detect the received optical signal. From simulation results, it is demonstrated that bit error probability (BEP) and throughput performance is substantially improved with the number of iterations for a fixed code rate and with alphabet size of pulse position modulation (PPM). Also, the BEP and throughput performance is significantly enhance with the number of iterations for decoding process.

Keywords

code division multiple access; error statistics; intensity modulation; optical modulation; optical signal detection; pulse position modulation; turbo codes; BEP; PPM; bit error probability; direct-detection scheme; fixed code rate; intensity modulated channel; optical CDMA system; optical channel; optical signal detection; performance analysis; pulse position modulation; turbo coding scheme; Error probability; Intensity modulation; Multiaccess communication; Optical detectors; Optical modulation; Optical pulses; Performance analysis; Pulse modulation; Throughput; Turbo codes;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications and Information Technology, 2009. ISCIT 2009. 9th International Symposium on

Conference_Location

Icheon

Print_ISBN

978-1-4244-4521-9

Electronic_ISBN

978-1-4244-4522-6

Type

conf

DOI

10.1109/ISCIT.2009.5340995

Filename

5340995