Open AccessImproving the power efficiency of enhanced unipolar OFDM for optical wireless communication
Author(s) -
Dang Jian,
Zhang Zaichen,
Wu Liang
Publication year - 2015
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2015.2024
Subject(s) - orthogonal frequency division multiplexing , wireless , optical wireless , electronic engineering , computer science , power (physics) , optical communication , electrical engineering , telecommunications , engineering , channel (broadcasting) , physics , quantum mechanics
Enhanced unipolar orthogonal frequency division multiplexing (eU‐OFDM) is a novel unipolar multicarrier modulation scheme used in intensity modulation and direct detection systems for optical wireless communication. It improves the spectral efficiency of unipolar OFDM at the expense of lower power efficiency. A novel symbol detection method exploiting the intrinsic signal structure of the received signal is proposed. Analysis and simulations show that the power efficiency of eU‐OFDM could be improved up to 3 dB in the high signal‐to‐noise ratio regime using the proposed method.