Indoor multicolor multiplexing visible light access system based on RZ-PAM4 signals with different duty ratios

• Main Authors: WANG ANRONG, YUAN JIE, SHAO YUFENG, YANG QIMING, YI LINFANG, LI YANLIN, LI CHONG, LIU SHUANFAN, ZUO RENJIE, CHEN PENG, TIAN QING, YU NI
• Format: Patent
• Language: Chinese; English
• Published: 30.06.2023
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION

The invention discloses an indoor multicolor multiplexing visible light access system based on RZ-PAM4 signals with different duty ratios, the indoor multicolor multiplexing visible light access system based on the RZ-PAM4 signals with different duty ratios is characterized in that an RZ-PAM4 signal generation module is used for generating four paths of RZ-PAM4 signals with different duty ratios; the visible light transmission link module loads the four paths of RZ-PAM4 signals to a four-color LED to generate four paths of visible light signals, and the four paths of visible light signals are transmitted in a visible light channel; the receiving module receives the four paths of visible light signals and recovers the original signals. The system disclosed by the invention supports receiving and transmitting of 1.5 Gbit/s RZ-PAM4 signals and transmission of four paths of downlink signals on a 8m wireless optical channel; under the same wavelength, the transmission performance of the visible light signal with t