A Novel ACO-OFDM System Based on Fast Walsh Hadamard Transform
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Tarih
2020
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Institute of Electrical and Electronics Engineers Inc.
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Visible Light Communication (VLC), an alternative to radio frequency (RF), was born as a promising technology. In VLC systems, orthogonal frequency division multiplexing (OFDM) has received much attention due to its high data rate, simple equalization and robustness against inter symbol interference (ISI). However, high peak to average power ratio (PAPR) and LED non-linearity have remarkable effects on the performance of indoor VLC-OFDM systems. Asymmetrically clipped optical OFDM (ACO-OFDM) is a technique that sacrifices spectral efficiency to transmit a unipolar frequency division multiplexed signal over a unipolar channel. In this study, fast Walsh Hadamard transform based ACO-OFDM (FWHT-ACO-OFDM) method is proposed to improve the performance of ACO-OFDM system by recovering this spectral efficiency. The performance of the proposed method is verified by computer simulation studies for bit error rate (BER) and PAPR performance criteria. From the simulation consequence, it is seen that the proposed method is better for both performance criteria than ACO-OFDM methods. © 2020 IEEE.
Açıklama
2nd International Conference on Electrical -- Communication and Computer Engineering -- ICECCE 2020 -- 12 June 2020 through 13 June 2020 -- Istanbul -- 162684
Anahtar Kelimeler
ACO-OFDM, FWHT-ACO-OFDM, OFDM, PAPR, visible light communication
Kaynak
2nd International Conference on Electrical, Communication and Computer Engineering, ICECCE 2020
WoS Q Değeri
Scopus Q Değeri
N/A
