Optoelectronics Letters, Volume. 18, Issue 8, 484(2022)
Tunnel visible light communication system utilizing frequency domain pre-equalization technique
Simultaneously improving the communication speed and equalizing the nonlinear frequency response are still challenging for tunnel visible light communication (TVLC) system. Here, we propose and numerically investigate a frequency domain pre-equalization scheme for discrete multitone (DMT) modulation TVLC system. The amplitude of each subscriber is appropriately pre-equalized by optimized nonlinear compensation parameters. Simulation results demonstrate that our proposed equalization technique can resist the channel attenuation of the signal high-frequency part and further flatten the nonlinear channel response. Without forward error correction technique, the bit error ratio (BER) performance can reach 7.66×10-6 in a 2.05 Gbit/s DMT-TVLC system.
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WANG Dong, LI Chao, CHE Yue. Tunnel visible light communication system utilizing frequency domain pre-equalization technique[J]. Optoelectronics Letters, 2022, 18(8): 484
Received: Jan. 18, 2022
Accepted: Apr. 13, 2022
Published Online: Jan. 20, 2023
The Author Email: Dong WANG (ise_wangdong@ujn.edu.cn)