利用ARQ和自适应连接FEC码对卫星链路上的ATM流量进行吞吐量分析

A. H. Hmimy, S.C. Gupta
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引用次数: 2

摘要

本文分析了一种自适应混合FEC/ARQ方案的性能,该方案根据信道条件调整码率。连接方案使用固定速率RS(59,53) / GF(2/sup 8/)作为外部代码,同时使用速率兼容的穿孔卷积RCPC代码作为内部代码。内部代码具有6阶内存,其速率为1/2,4/7,2/3,4/5或8/9,具体取决于通道条件。将该自适应方案与内码率分别为2/3和1/2的固定码率串联方案进行性能比较。
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Throughput analysis of ATM traffic over satellite links using ARQ and adaptive concatenated FEC codes
In this paper, we analyze the performance of an adaptive hybrid FEC/ARQ scheme that adjusts the code rate to match the channel conditions. The concatenated scheme is using a fixed-rate RS(59,53) over GF(2/sup 8/) as the outer code along with a rate-compatible punctured convolutional RCPC code as the inner code. The inner code has order 6 memory and its rate is 1/2, 4/7, 2/3, 4/5, or 8/9, depending on the channel conditions. The performance of the adaptive scheme is compared with two fixed-rate-concatenated schemes whose inner code rates are 2/3 and 1/2.
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