On The Important Techniques Of Digital Fountain Code For Efficient Wireless Broadcast Communication

Efficient wireless communication has attracted increasingly significant attention due to the flying development of communication techniques. Most researches on conventional wireless digital link layer have been focusing on the classical ARQ technique; however, using only ARQ is far from satisfaction of the real-time systems. Therefore, digital fountain code are researched in the paper, after detailed analysis, a newly auto-adaptive broadcast method is suggested.In this dissertation, in order to set a contrast, we first study the conclusions of network coding and simulate for the conclusions. Then we set a detailed analysis for digital fountain code, including the delay﹑capacity and reversibility of its related matrix, we take numerical calculations and simulations as well. The conclusion for all the mentioned technologies is possessed at last.The system performance is affected by various factors in real-time wireless communication. Therefore, this paper has studied on burst data stream environment, an auto-adaptive broadcast method is presented and demonstrated from both numerical calculations and simulations. The results show that our algorithm achieves the simplified realization and efficiency at the same time.