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The throughput efficiency of the go-back-N ARQ scheme under Markov and related error structures

机译:马尔可夫及其相关误差结构下的Go-back-N ARQ方案的吞吐效率

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A formula for the go-back-N ARQ (automatic repeat request) scheme applicable to Markov error patterns is derived. It is a generalization of the well-known efficiency formula p/(p+m(1-p)) (where m is the round trip delay in number of block durations and p is the block transmission success probability), and it has been successfully validated against simulation measurements. It is found that for a given error rate, error patterns having zero correlation between successive transmission generally fare better than those with negative correlation, and that error patterns with positive correlation fare better still. It is shown that the present analysis can be extended in a straightforward manner to cope with error patterns of a more complex nature. Simple procedures for numerical evaluation of efficiency under quite general error structures are presented.
机译:推导了适用于马尔可夫差错码型的返回-N ARQ(自动重复请求)方案的公式。它是众所周知的效率公式p /(p + m(1-p))的推广(其中m是以块持续时间为单位的往返延迟,p是块传输成功概率),已针对仿真测量成功验证。已经发现,对于给定的错误率,连续传输之间具有零相关性的错误模式通常比具有负相关性的错误模式更好,而具有正相关性的错误模式仍然更好。已经表明,可以以直接的方式扩展本分析以应对更复杂性质的错误模式。提出了在相当普遍的误差结构下进行效率数值评估的简单程序。

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