A microwave photonics receiving method for low SNR QAM signals based on optical pulse shaping

Yiwei Sun; Gaojian Liu; Guojie Zhang; Wei Jiang; Di Wang; Dong Liang; Qinggui Tan

doi:10.1117/12.3046594

13 December 2024 A microwave photonics receiving method for low SNR QAM signals based on optical pulse shaping

Yiwei Sun, Gaojian Liu, Guojie Zhang, Wei Jiang, Di Wang, Dong Liang, Qinggui Tan

Author Affiliations +

Proceedings Volume 13502, AOPC 2024: AI in Optics and Photonics; 135020B (2024) https://doi.org/10.1117/12.3046594
Event: Applied Optics and Photonics China 2024 (AOPC2024), 2024, Beijing, China

Abstract

A low signal-to-noise ratio QAM receiving method based on optical pulse shaping is proposed in this paper. By matching the shape of the optical sampling pulses with the transmitted QAM signal and quantizing with a one-bit electrical ADC, the receiving communication signals are matched filtered. Thus, the transmitting code can be recovered even if the receiving SNR is below the demodulation threshold. In simulations, 4QAM signals with SNR of 0dB are received with the bit-error rate of 1 × 10⁻².

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Yiwei Sun, Gaojian Liu, Guojie Zhang, Wei Jiang, Di Wang, Dong Liang, and Qinggui Tan "A microwave photonics receiving method for low SNR QAM signals based on optical pulse shaping", Proc. SPIE 13502, AOPC 2024: AI in Optics and Photonics, 135020B (13 December 2024); https://doi.org/10.1117/12.3046594

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