Impact Statement:The system generates probabilistic shaping-16-quadrature-amplitude-modulation (PS-16QAM) singnals at Q-band enabled by a joint algorithm, which combines PS and recoding t...Show More
Abstract:
In this letter, we propose a novel and straightforward scheme for Q-band (33–50 GHz) millimeter-wave signal generation enabled by a Mach-Zehnder modulator (MZM)-based joi...Show MoreMetadata
Impact Statement:
The system generates probabilistic shaping-16-quadrature-amplitude-modulation (PS-16QAM) singnals at Q-band enabled by a joint algorithm, which combines PS and recoding technology, and MZM-based optical carrier suppression (OCS) technique. From BER curve, it can be clearly seen that the joint scheme effectively improves the anti-interference ability of the system. The scheme shows that PS has great potential in radio over fiber (ROF) system.
Abstract:
In this letter, we propose a novel and straightforward scheme for Q-band (33–50 GHz) millimeter-wave signal generation enabled by a Mach-Zehnder modulator (MZM)-based joint algorithm, which combines probabilistic shaping (PS) and precoding technology, to enhance the anti-interference ability of the transmission system. Based on the proposed scheme, we experimentally demonstrate the generation and transmission of 1.4-Gbaud 46-GHz PS-16-quadrature-amplitude-modulation (PS-16QAM) vector signals, showcasing improved bit-error-ratio (BER) in both standard single-mode fiber (SSMF) and wireless transmission cases. The proposed scheme exhibits a clear advantage in terms of nonlinear interference suppression and satisfies the hard-decision forward-error-correction (HD-FEC) threshold with a BER of 3.8 × 10−3 in radio-over-fiber (RoF) systems.
Published in: IEEE Photonics Journal ( Volume: 15, Issue: 4, August 2023)
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