This paper investigates the use of bit loading algorithms
in order to use ESIM OFDM in frequency selective channels.
This work focuses on maximizing the bit rate minimizing the loss of spectral efficiency
because of the insertion of idle subcarriers. Besides, the modified ESIM OFDM is
generalized to support groups of subcarriers of
arbitrary size based on the number of idle subcarriers. The
effect of this generalization, as well as the new bit distribution after using bit loading, on the peak to average power ratio
(PAPR) and the bit error rate (BER) are analyzed. Additionally a novel way to evaluate the
BER in such a system is proposed. The proposed scheme
is shown to outperform the original ESIM OFDM performance in terms of PAPR, at
the cost of a small degradation of the BER. This improvement in the PAPR makes
the proposed scheme a good candidate for Optical Wireless Communication (OWC)
systems, and in particular for Visible Light Communication (VLC) systems.
1st Mosharaka International Conference on Wireless Communication Systems and Networks (MIC-Wireless 2015)
Congress
2015 Global Congress on Wireless Communication Systems and Networks (GC-Wireless 2015), 7-9 August 2015, Barcelona, Spain
Pages
1-6
Topics
MIMO Optical Communications Free-Space Optical Communications
ISSN
2227-331X
DOI
BibTeX
@inproceedings{999Wireless2015,
title={Bitloaded Modified Enhanced Subcarrier Index Modulation OFDM for Visible Light Communications},
author={Victor Monzón Baeza, and Juan Jose Garcia Fernandez, and Ana García},
booktitle={2015 Global Congress on Wireless Communication Systems and Networks (GC-Wireless 2015)},
year={2015},
pages={1-6},
doi={}},
organization={Mosharaka for Research and Studies}
}
