In this study, a performance evaluation of radio over multimode fibre system using coded orthogonal frequency division multiplexing (COFDM) is presented. The performance analyses based on bit-error ratio (BER) are extensively investigated. In addition, the effect of fibre length on BER performance is presented. Moreover, the effect of the exponent refractive index profile of the multimode fibre on the BER of COFDM is studied considering maximum likelihood ratio and sub-optimal simplified log likelihood ratio as a soft-bit metrics for soft-decision viterbi decoding.

This paper appears in: Optoelectronics, IET
Issue Date: August 2011
Volume: 5 Issue: 4
On page(s): 151 - 157
ISSN: 1751-8768
INSPEC Accession Number: 12159036
Digital Object Identifier: http://dx.doi.org/10.1049/iet-opt.2010.0014
Date of Current Version: 15 August 2011