Performance of an optical CDMA system with turbo code

Author

Kim, Jin Young

Author_Institution

Dept. of Electr. Eng., Princeton Univ., NJ, USA

fYear

1999

fDate

1999

Firstpage

89

Lastpage

92

Abstract

In this paper, performance of an optical CDMA system with turbo code is analyzed and simulated. It is assumed that optical channel is an intensity modulated (IM) channel and direct-detection scheme is employed to detect the received optical signal. The modulation scheme used is binary-pulse-position-modulation (BPPM). From the simulation results, it is shown that turbo coding offers considerable coding gain with reasonable encoding/decoding complexity. Also, it is demonstrated that the performance of an optical CDMA system can be substantially improved by increasing the interleaver length for a fixed code rate. The results in this paper can be applied to an optical CDMA system with PPM modulation

Keywords

code division multiple access; decoding; intensity modulation; optical fibre networks; optical modulation; optical signal detection; pulse position modulation; turbo codes; PPM modulation; binary-pulse-position-modulation; coding gain; decoding; direct-detection scheme; encoding; fixed code rate; intensity modulated channel; interleaver length; modulation scheme; optical CDMA system; optical channel; performance; received optical signal detection; simulation; turbo code; Convolutional codes; Iterative decoding; Maximum likelihood decoding; Multiaccess communication; Optical modulation; Optical pulses; Optical receivers; Optical transmitters; Pulse modulation; Turbo codes;

fLanguage

English

Publisher

ieee

Conference_Titel

Radio and Wireless Conference, 1999. RAWCON 99. 1999 IEEE

Conference_Location

Denver, CO

Print_ISBN

0-7803-5454-0

Type

conf

DOI

10.1109/RAWCON.1999.810938

Filename

810938