1.2 km wireless transmission of 512-QAM signals at 220 GHz using delta-sigma modulation

We have experimentally demonstrated, for the first time, photonics-aided J-band 7.48-Gb/s QPSK signals and 2.5-Gb/s 512-QAM signals using delta-sigma modulation over 1.2-km wireless link. After 1.2-km wireless transmission, the bit error rate (BER) of the 512-QAM is below the 20% soft decision forwa...

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Bibliographic Details
Published in:Optics communications 2025-01, Vol.574, p.131145, Article 131145
Main Authors: Tan, Jingwen, Yang, Xiongwei, Zhang, Bing, Zhang, Long, Wei, Yi, Wang, Mingxu, Xu, Sicong, Han, Yang, Tian, Peng, Zhang, Qiutong, Zhang, Qinyi, Zhou, Wen, Wang, Kaihui, Yu, Jianjun
Format: Article
Language:English
Subjects:
Delta-sigma modulation
J-band
Long-distance wireless transmission
Photonics-aided
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Summary:We have experimentally demonstrated, for the first time, photonics-aided J-band 7.48-Gb/s QPSK signals and 2.5-Gb/s 512-QAM signals using delta-sigma modulation over 1.2-km wireless link. After 1.2-km wireless transmission, the bit error rate (BER) of the 512-QAM is below the 20% soft decision forward error correction (SD-FEC) threshold of 2 × 10−2. As far as we know, this is the longest distance achieved for wireless transmission in a photonics-aided J-band wireless transmission system. •We experimentally demonstrate for the first time the transmission of photonics-aided J-band 2.5-Gb/s 512-QAM DSM signals over a 1.2-km wireless link.•We use DSM technology to encode high-order QAM signal waveforms into QPSK signals for transmission over wireless links, effectively mitigating the nonlinear impairments introduced by high-order QAM.
ISSN:0030-4018
DOI:10.1016/j.optcom.2024.131145