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Two-dimensional (2D) pixelated Optical-Wireless-Communication-Systems (OWCS), with Intensity-Modulation, Direct-Detection (IM/DD), commonly use computer-display (on transmit-side), and camera (on receive-side). One-dimensional (1D) IM/DD OWCS and channels, which use discrete optical components, are average-power-limited, due to eye-safety rules. In contrast, 2D pixelated-channels are peak-power limited...
Single Carrier Decomposed-Quadrature Optical (SC-DQO) modulation has been suggested in the past, as a possible method for use in Optical Wireless (OW) Intensity Modulation with Direct Detection (IM-DD) communication systems. This method has lower peak-to-average power ratio (PAPR) when compared to Asymmetrically-Clipped Optical OFDM (ACO-OFDM). It was shown that its receiver utilizes only 50% of the...
Recently, an improved receiving technique for Optical Wireless (OW) with Intensity Modulation and Direct Detection (IM-DD) communication systems, implementing Asymmetrically-Clipped Optical OFDM (ACO-OFDM) modulation, has been proposed. It uses the previously discarded (so called in the literature) “clipping noise” to generate an improved estimator for the transmitted signal, up to 3dB in the receiver...
In this work, an improved receiving technique for Optical Wireless Intensity Modulation and Direct Detection (OW IM-DD) communication system, with Asymmetrically-Clipped Optical OFDM (ACO-OFDM) modulations, is proposed. The (socalled in the literature) “clipping noise”, which carries 50% of the transmitted signal power is customarily discarded. Instead we show that the clipping noise carries information...
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