Impact of fiber optic dispersion on the performance of OFDM-QAM system

Author

Al-Khateeb, Khalid A S ; Akhter, Fowzia ; Islam, Mohammed Rafiqul

Author_Institution

Dept. of Electr. & Comput. Eng., Int. Islamic Univ. Malaysia (IIUM), Kuala Lumpur, Malaysia

fYear

2010

fDate

11-12 May 2010

Firstpage

1

Lastpage

5

Abstract

The Performance of Orthogonal Frequency Division Multiplexing (OFDM) combined with Quadrature Amplitude Modulation (QAM) has been analyzed in presence of fiber optic dispersion. The influence of dispersion on the (OFDM) spectrum is investigated with fiber lengths, bit rates, no. of channels and source line widths. The inter-channel interference occurs due to dispersion-induced broadening of OFDM spectrum. The power penalty suffered by the system is evaluated at bit error rate, BER=10-9 for a single mode fiber operating at 1.55μm. The results obtained from the OFDM-QAM system demonstrate that the influence of dispersion is lower in OFDM-QAM spectrum in comparison with single bit transmission with same bandwidth and it is approximately two times less than that of a conventional system.

Keywords

OFDM modulation; adjacent channel interference; error statistics; light interference; optical fibre dispersion; optical fibre networks; optical modulation; quadrature amplitude modulation; OFDM-QAM system; bit error rate; dispersion-induced broadening; fiber optic dispersion; interchannel interference; orthogonal frequency division multiplexing; quadrature amplitude modulation; single-mode fiber; Bit error rate; Bit rate; OFDM; Optical fiber communication; Optical fiber dispersion; Optical fibers; BER performance; OFDM-QAM; dispersion;

fLanguage

English

Publisher

ieee

Conference_Titel

Computer and Communication Engineering (ICCCE), 2010 International Conference on

Conference_Location

Kuala Lumpur

Print_ISBN

978-1-4244-6233-9

Type

conf

DOI

10.1109/ICCCE.2010.5556779

Filename

5556779