TY - JOUR
T1 - On the performance of SPAD-based optical wireless communication with ACO-OFDM
AU - Huang, Shenjie
AU - Chen, Cheng
AU - Soltani, Mohammad Dehghani
AU - Henderson, Robert
AU - Haas, Harald
AU - Safari, Majid
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PY - 2023/7/1
Y1 - 2023/7/1
N2 - The nonlinear distortion introduced by the dead time strongly limits the throughput of the highly sensitive SPAD-based optical wireless communication (OWC) systems. Optical OFDM can be employed in the systems with SPAD arrays to improve the spectral efficiency. In this work, a theoretical performance analysis of SPAD-based OWC system with asymmetrically-clipped optical OFDM (ACO-OFDM) is presented. The impact of the SPAD nonlinearity on the system performance is investigated. In addition, the comparison of the considered scheme with DCO-OFDM is presented showing the distinct reliable operation regimes of the two schemes. In low optical power regimes, ACO-OFDM outperforms DCO-OFDM with around 4 dB power gain achieved by 16-QAM ACO-OFDM over 4-QAM DCO-OFDM. However, DCO-OFDM is in turn more preferable in high power regimes which extends the maximal tolerable received optical power by 7.4 dB.
AB - The nonlinear distortion introduced by the dead time strongly limits the throughput of the highly sensitive SPAD-based optical wireless communication (OWC) systems. Optical OFDM can be employed in the systems with SPAD arrays to improve the spectral efficiency. In this work, a theoretical performance analysis of SPAD-based OWC system with asymmetrically-clipped optical OFDM (ACO-OFDM) is presented. The impact of the SPAD nonlinearity on the system performance is investigated. In addition, the comparison of the considered scheme with DCO-OFDM is presented showing the distinct reliable operation regimes of the two schemes. In low optical power regimes, ACO-OFDM outperforms DCO-OFDM with around 4 dB power gain achieved by 16-QAM ACO-OFDM over 4-QAM DCO-OFDM. However, DCO-OFDM is in turn more preferable in high power regimes which extends the maximal tolerable received optical power by 7.4 dB.
KW - optical wireless communication
KW - orthogonal frequency division multiplexing (OFDM)
KW - Single-photon avalanche diode (SPAD)
U2 - 10.1109/lcomm.2023.3271617
DO - 10.1109/lcomm.2023.3271617
M3 - Article
SN - 1089-7798
VL - 27
SP - 1809
EP - 1813
JO - IEEE Communications Letters
JF - IEEE Communications Letters
IS - 7
ER -