Combined modulation and code design approach for MAI canelation in OCDMA system

Author

Geetha, V. ; Manoharan, B.

Author_Institution

Electron. & Commun. Eng., Pondicherry Eng. Coll., Pondicherry, India

fYear

2015

fDate

26-27 Feb. 2015

Firstpage

520

Lastpage

524

Abstract

Optical code division multiple access (OCDMA) is a promising technology for optical networks especially for optical signal multiplexing as it offers huge bandwidth, secure transmission and high speed. The OCDMA system performance is limited by multiple access interference (MAI) due to asynchronous nature of transmission. This paper discuss an MAI cancellation technique for OCDMA system by incorporating M-ary-FSK Modulation and also by employing double padded modified prime code as a signature sequence. The FSK-OCDMA system performance is compared with the existing pulse position modulation (PPM)-OCDMA system. The results reveal that the FSK-OCDMA system achieve better MAI cancellation by providing lower bit error rate than the PPM-OCDMA system.

Keywords

code division multiple access; error statistics; frequency shift keying; modulation coding; optical fibre networks; optical modulation; M-ary-FSK modulation; MAI cancellation; OCDMA system; combined modulation/code design; double padded modified prime code; multiple access interference; optical code division multiple access; optical signal multiplexing; pulse position modulation; signature sequence; Adaptive optics; Bit error rate; Modulation; Multiaccess communication; Optical fibers; Optical pulses; FSK; MAI; OCDMA; double padded modified prime code;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronics and Communication Systems (ICECS), 2015 2nd International Conference on

Conference_Location

Coimbatore

Print_ISBN

978-1-4799-7224-1

Type

conf

DOI

10.1109/ECS.2015.7124962

Filename

7124962