An Improved Selective-Repeat ARQ Strategy
An Improved Selective-Repeat ARQ Strategy
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DOI：
10.1109/tcom.1982.1095497
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发表时间：
1982-03
期刊：
影响因子：
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通讯作者：
Jr. E. Weldon
中科院分区：
文献类型：
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作者：
Jr. E. Weldon
提出了一种在选择重传ARQ系统中处理重传的新方法。此过程可以使用最小大小的接收缓冲区进行操作;此外，它对发送和接收处理器的计算负载很小。该过程非常简单，可以精确计算其吞吐量。分析表明：1）它产生更高的吞吐量比早期的ARQ技术; 2）对于适度的接收缓冲区大小，其吞吐量与信道容量相差不大; 3）随着缓冲区大小的增加，吞吐量接近信道容量。本文的最后一节考虑了ARQ系统在突发错误信道上的性能。这表明，在相当好的信道，错误突发性对吞吐量的影响很小。
A new procedure for handling retransmissions in a selective-repeat ARQ system is proposed. This procedure can operate with a receive buffer of minimal size; in addition it places little computational load on the transmit and receive processors. The procedure is simple enough that its throughput can be calculated exactly. Analysis of this strategy shows that: 1)it yields higher throughput than earlier ARQ techniques; 2) for modest receive buffer size, its throughput differs little from channel capacity; 3) as buffer size increases, throughput approaches channel capacity. The final section of the paper considers the performance of ARQ systems on channels in which errors occur in bursts. It indicates that on reasonably good channels, error burstiness has little effect on throughput.