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24 August 2010 Evaluating M-ary PSK multiple-subcarrier modulation over FSO links using aperture averaging
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Abstract
In this paper, we propose a Free-Space Optical (FSO) system model based on multiple subcarrier modulation (MSM) using M-ary Phase Shift Keying (M-ary PSK) scheme over Intensity Modulation Direct Detection optical link. We investigate the impact of aperture averaging on our model across weak-to-strong turbulence regimes taking into consideration the intermodulation distortion term due to the laser diode non-linearity. By using a modified model for aperture averaging technique, we also show that there is a design tradeo¤ between the receiver lens aperture and the required average Carrier-to-Noise and Distortion Ratio to achieve a given average bit error rate, ensuring substantial scintillation fade reduction.
© (2010) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
C. Ben Naila, A. Bekkali, K. Kazaura, K. Wakamori, and M. Matsumoto "Evaluating M-ary PSK multiple-subcarrier modulation over FSO links using aperture averaging", Proc. SPIE 7814, Free-Space Laser Communications X, 78140V (24 August 2010); https://doi.org/10.1117/12.863105
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