Abstract
A new methodology is proposed for the modeling of practical uncoded
bit and power loading schemes for OFDM, based on the assumption of a uniform
transmit power spectrum. The accuracy of this technique, both in terms of
predicted maximum data rate and occupied bandwidth, is demonstrated analytically
for an Intensity Modulated/Direct Detected (IM/DD) system over Step Index
Plastic Optical Fibers (SI-POF). It is shown that both this new methodology
and the well known water pouring theorem accurately predict the maximum achievable
data rate in practical uncoded systems; however, it is also demonstrated that
the new methodology is a better predictor of the bandwidth occupied by the
transmit signal, thus providing an important analytical tool for system designers.The analysis presented is also experimentally verified using an IM/DD
optical system employing a directly modulated Resonant Cavity Light Emitting
Diode (RCLED) light source and several lengths of 1 mm SI-POF.
© 2011 IEEE
PDF Article
More Like This
Cited By
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Login to access Optica Member Subscription
Add to BibSonomy