SLM-based ACO-OFDM VLC system with low-complexity minimum amplitude difference decoder

• Published in: Electronics letters Vol. 54; no. 3; pp. 144 - 146
• Main Author: Hu, Wei-Wen
• Format: Journal Article
• Language: English
• Published: The Institution of Engineering and Technology 08.02.2018
• Subjects: asymmetrically clipped optical orthogonal frequency division multiplexing; bit error rate performance; CSLM scheme; error statistics; free‐space optical communication; Information and communications; low‐complexity MAD decoder; low‐complexity minimum amplitude difference decoder; maximum likelihood decoder; maximum likelihood decoding; OFDM modulation; PAPR; peak‐to‐average power ratio; selected mapping; side information; SLM‐based ACO‐OFDM VLC system; symmetric vectors; visible light communication system; low-complexity minimum amplitude difference decoder; peak-to-average power ratio; symmetric vectors; side information; CSLM scheme; maximum likelihood decoding; bit error rate performance; maximum likelihood decoder; PAPR; visible light communication system; OFDM modulation; free-space optical communication; low-complexity MAD decoder; selected mapping; asymmetrically clipped optical orthogonal frequency division multiplexing; SLM-based ACO-OFDM VLC system; error statistics
• ISSN: 0013-5194; 1350-911X; 1350-911X
• DOI: 10.1049/el.2017.3158

A novel low-complexity minimum amplitude difference (MAD) decoder is proposed for selected mapping (SLM)-based asymmetrically clipped optical orthogonal frequency division multiplexing (ACO-OFDM) visible light communication (VLC) system. With the proposed scheme, a specific set of symmetric vectors is designed to minimise the peak-to-average power ratio (PAPR) of signal without the transmission of side information (SI) and recover SI blindly by the proposed MAD decoder. Simulation results show that the proposed scheme reduces the PAPR effectively and the bit error rate performance of ACO-OFDM system with MAD decoder is very close to that of conventional selected mapping (CSLM) scheme with maximum likelihood decoder, but at much lower complexity.