An Optimized Algorithm on the Design of Degree Distribution for Fountain Code based on Physical Layer Security
Hui Shi, Jing Lei, Jing Tu, Qiu Gongda · Proceedings of the 2020 4th International Conference on Electronic Information Technology and Computer Engineering · 2020
In this paper, we propose an improved algorithm on the design of degree distribution on the basis of the security coding system model of fountain code concatenation and coset precoding. The algorithm is an improved global optimization algorithm based on particle swarm optimization (PSO) and chaos mechanism which is suitable for memoryless binary erasure channel with noise in both main channel and eavesdropping channel. The simulation results show that the algorithm reduces the computational complexity of fountain code degree distribution and effectively improves the stability. The fountain code generated by the algorithm has better decoding burst speed and can meet the requirements of larger security region of the system.