Performance Analysis of m-PSK/QAM Based on LDPC-BICM System in Maritime Atmospheric Turbulence Channel
Feng Liu, Junyun Zhan, Zhongli Yi · 2022
Maritime communication system is an indispensable means to ensure the safety of ship navigation. It is one of the basic elements of water traffic safety supervision and rescue. It runs through the whole process of ship rescue and involves all aspects of water traffic safety supervision. Atmospheric turbulence is one of the main factors affecting the performance of maritime communication system. In order to verify the performance and feasibility of low-density parity-check coded bit-interleaved coded modulation (LDPC-BICM) system in maritime communication system, A LDPC-BICM joint coded m-PSK/QAM communication system over Gaussian channel and maritime atmospheric turbulence channel with different intensity is investigated. In this paper We simulated the performances of LDPC single coding scheme and LDPC-BICM system scheme in Gaussian channel, the performances of LDPC single coding scheme and LDPC-BICM system scheme under QPSK modulation in turbulent channel with different intensity, the performances of LDPC single coding scheme and LDPC-BICM system scheme under 16QAM modulation in turbulent channel with different intensity, the performances of LDPC single coding scheme and LDPC-BICM system scheme under 64QAM modulation in turbulent channel with different intensity are simulated. The results show that LDPC-BICM system can resist fading, reduce burst errors and improve the performance of communication system in atmospheric turbulence channel.