Title :
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
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;
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
DOI :
10.1109/ISCIT.2009.5340995
