摘要
本文用奇次马尔可夫链精确完整地描述了考虑正反向信道差错的Stop—and—Wiat ARQ通信系统的工作过程,将复杂的通信过程分成七种概率事件,从而将系统的正确传输概率和误字、漏字以及加字概率严格地区分开来。用马氏链推导出描述系统性能的一组公式。该方法物理过程清晰,求解简单、精确。
Considering the errors from return channel, the operating process of stop-and-wait ARQ communication system is accurately described by odd Marker chains. The article reduces the complicated process of communication into seven probability, and strictly differentiates a proper transmission probability, an error word rate, a leakage word rate and an added word rate of the systems. The performaace formulas described systems described systems is derived from Marker chaias. The way is clear for physics and can be solued simply accurately.
关键词
马尔可夫链
通信系统
communication system, automatic repeat toquest, Markov chains, error word rate, added word rate, leakage word rate.
