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首页> 外文期刊>The mediterranean journal of electronics and communications >DELAY ANALYSIS OF ARQ SCHEMES USING STATE TRANSITION DIAGRAMS
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DELAY ANALYSIS OF ARQ SCHEMES USING STATE TRANSITION DIAGRAMS

机译：使用状态转换图进行ARQ方案的延迟分析

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摘要

Automatic repeat request techniques have been widely used in order to improve throughput and delay performance in digital communication systems. Various methods have also been developed with the aim of modelling and determining performance in communication systems employing these techniques. Some of these methods are complex while others are simplified, In a previous study, the use of simple state transition diagrams and the z-transform were used to determine the throughput of various automatic repeat request schemes. In this paper, that method has been extended to determine data delay in those schemes. It is found that the method does not give simple diagrams like in the determination of throughput. It is however found that among the basic automatic repeat request schemes, the Go-Back-N scheme has the highest delay while the Stutter scheme has the lowest delay. Also, among the mixed mode schemes, the Selective Repeat + Go-Back-N scheme has the highest delay while the Selective Repeat + Stutter scheme has the lowest. It is also shown that the number of retransmissions in the mixed type schemes can be chosen to minimize the delay depending on the noise characteristics of the transmission channel.
机译：自动重复请求技术已被广泛使用，以提高数字通信系统中的吞吐量和延迟性能。为了建模和确定采用这些技术的通信系统中的性能，还开发了各种方法。这些方法中的一些方法很复杂，而另一些方法则得到了简化。在以前的研究中，使用简单的状态转换图和z变换来确定各种自动重复请求方案的吞吐量。在本文中，该方法已扩展为确定那些方案中的数据延迟。发现该方法没有像确定吞吐量那样给出简单的图。然而，发现在基本的自动重复请求方案中，Go-Back-N方案具有最高的延迟，而Stutter方案具有最低的延迟。此外，在混合模式方案中，“选择性重复+逆向N”方案的延迟最高，而“选择性重复+口吃”方案的延迟最低。还示出了可以根据传输信道的噪声特性来选择混合类型方案中的重传次数以最小化延迟。

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