Laser & Optoelectronics Progress, Volume. 58, Issue 21, 2106002(2021)
Performance Analysis of a Multi-Band Vector Millimetre-Wave Signal Probability Shaping
The photon-assisted method easily generates and modulates broadband vector millimetre-wave or terahertz signals. The generation and transmission performance of its multi-band vector millimetre-wave signal is analysed in VPI and MATLAB environments using the coherent optical path structure of the cascade of the intensity modulator and the in-phase/quadrature (I/Q) modulator, combined with the probabilistic shaping technology. The transmission performance of two single-sideband vector signals with a net bit rate of 32 Gbit/s in uniform 16-ary quadrature amplitude modulation (16QAM) format and in a probability-shaping 16QAM format is compared and studied on the carrier frequencies about 70 GHz and 130 GHz, respectively. The simulation results show that the probabilistically shaped 16QAM millimetre-wave signal outperforms the uniform 16QAM millimetre-wave signal in optical fibre transmission. When the nonlinear effect of the fiber is considered, the probabilistically shaped signal has greater transmission advantages.
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Changpeng Jiang, Feng Zhao, Yi Wei, Fanyun Wang, Jiaxin Meng, Jun Liu. Performance Analysis of a Multi-Band Vector Millimetre-Wave Signal Probability Shaping[J]. Laser & Optoelectronics Progress, 2021, 58(21): 2106002
Category: Fiber Optics and Optical Communications
Received: Feb. 14, 2021
Accepted: Mar. 4, 2021
Published Online: Nov. 17, 2021
The Author Email: Zhao Feng (hfengzhao@xupt.edu.cn)