Real-time digitized RoF transceiver technology based on FPGA

Jiongbin Deng; Jia Ye; Lianshan Yan; Wei Pan; Xihua Zou

doi:10.1117/12.3005659

21 December 2023 Real-time digitized RoF transceiver technology based on FPGA

Jiongbin Deng, Jia Ye, Lianshan Yan, Wei Pan, Xihua Zou

Proceedings Volume 12966, AOPC 2023: AI in Optics and Photonics ; 129660M (2023) https://doi.org/10.1117/12.3005659
Event: Applied Optics and Photonics China 2023 (AOPC2023), 2023, Beijing, China

Abstract

Radio over fiber (RoF) has become a promising alternative for 5G mobile fronthaul due to its inherent advantages of large bandwidth, low susceptibility to radio frequency interference, and high flexibility. In traditional RoF system, analog signals are transmitted through optical fiber, which is susceptible to nonlinearity and dispersion. However, digitized radio over fiber (DRoF) can effectively mitigate these defects by digitizing the analog signals. This paper explores FPGA-based real-time DRoF transceiver technology, which utilizes varying numbers of quantization bits for real-time vector quantization across different modulation formats. This approach helps prevent the reduction of system spectral efficiency caused by excessive quantization bits. The simulation results demonstrate that, after real-time vector quantization and transmission with 8 and 10 quantization bits, the EVM performance of QPSK and 16-QAM signals stabilizes at 11.8% and 6.7%, respectively, thereby confirming the effectiveness of the proposed scheme.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Jiongbin Deng, Jia Ye, Lianshan Yan, Wei Pan, and Xihua Zou "Real-time digitized RoF transceiver technology based on FPGA", Proc. SPIE 12966, AOPC 2023: AI in Optics and Photonics , 129660M (21 December 2023); https://doi.org/10.1117/12.3005659

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