Abstract
This research comprises an end-to-end experimental comparison of the bit-rates and bit error-rates of
four major adaptive bit-and-power allocation algorithms for dc biased optical orthogonal frequency-division
multiplexing. The comparison includes studying different channel conditions and different numbers of subcarriers. The
experimental results show that all the methods compared display similar performance without significant superiority of
a single method, even though in theory some difference is expected. Our analysis of the experimental data showed that
the main reason for the uniformity in performance is the high variance in the channel estimation, especially at higher
frequency subcarriers.
© 2014 IEEE
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