Effect of numbers of sub-carriers, cyclic prefix and analogue to digital converter parameters on coherent optical orthogonal frequency division multiplexing modem's transmission performance

Jarajreh, Mutsam Abdel-karim, Wei, Jinlong, Tang, Jianming, Ghassemlooy, Zabih and Ng, Wai Pang (2010) Effect of numbers of sub-carriers, cyclic prefix and analogue to digital converter parameters on coherent optical orthogonal frequency division multiplexing modem's transmission performance. IET Communications, 4 (2). pp. 213-222. ISSN 1751-8628

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Official URL: http://dx.doi.org/10.1049/iet-com.2008.0581

Abstract

The number of sub-carriers, cyclic prefix (CP), and the characteristics of the analogue to digital converter (ADC), are significant parameters influencing the transmission capacity and distance of an optical orthogonal frequency division multiplexing (OOFDM) modem. Numerical simulations of coherent OOFDM modems are undertaken to investigate the effect of the number of sub-carriers, the CP length and ADC associated parameters such as the sampling speed, clipping ratio and quantisation bit on the system performance over single mode fibre (SMF) links for data rates up to 80 Gb/s. The use of a large number of sub-carriers is more effective in combating fibre dispersion when compared with employing a long CP. Moreover in the presence of fibre nonlinearities identifying the optimum number of sub-carriers is crucial factor for the modem performance. For various signal data rates up to 40 Gb/s, a set of data rate and transmission distance-dependent optimum ADC parameters are identified. These parameters give rise to negligible clipping and quantisation noise, moreover ADC sampling speed can increase dispersion tolerance while transmitting over SMF links.

Item Type: Article
Uncontrolled Keywords: coherent OOFDM modem transmission performance, numerical simulations, single mode fibre links, fibre dispersion, fibre nonlinearities
Subjects: H600 Electronic and Electrical Engineering
H900 Others in Engineering
Department: Faculties > Engineering and Environment > Mathematics and Information Sciences
Depositing User: EPrints Services
Date Deposited: 11 Mar 2010 10:02
Last Modified: 10 Aug 2015 11:24
URI: http://nrl.northumbria.ac.uk/id/eprint/3144

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