WATM operation optimisation based on effect of FEC code rate and ARQ retransmission

VTC '98. 48th IEEE Vehicular Technology Conference. Pathway to Global Wireless Revolution (Cat. No.98CH36151) Pub Date : 1998-05-18 DOI:10.1109/VETEC.1998.686218

P. L. Hiew, M. Zukerman, M. Gitlits

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引用次数: 7

Abstract

This paper applies a new methodology to different coding schemes for WATM efficiency evaluation. This methodology is based on the separation of error based efficiency (EBE), which is the ratio between the mean raw data rate and the raw data rate plus all overheads associated with error corrections and retransmission of erroneous blocks of data, from queuing based efficiency (QBE), which is the ratio between the error free data rate and the overall channel capacity. We compare between the efficiency of convolutional coding (in the case of binary transmission and high level modulation transmission) and turbo coding. We show that under most value of signal to noise ratio (SNR), turbo coding is the most efficient. We also provide means to support optimal adaptive setting of the code rate and demonstrate the improvement gained by implementing adaptive forward error correction code rate. We further demonstrate that, for certain realistic SNR conditions, the wastage due to retransmissions can be very high.

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基于FEC码率和ARQ重传影响的WATM运行优化

本文将一种新的方法应用于不同编码方案的WATM效率评估。这种方法是基于基于错误的效率(EBE)的分离，这是平均原始数据率和原始数据率加上与错误纠正和错误数据块重传相关的所有开销之间的比率，基于队列的效率(QBE)，这是无错误数据率和总体信道容量之间的比率。我们比较了卷积编码(在二进制传输和高电平调制传输的情况下)和涡轮编码的效率。结果表明，在大多数信噪比(SNR)值下，turbo编码是最有效的。我们还提供了支持码率最优自适应设置的方法，并演示了实现自适应前向纠错码率所获得的改进。我们进一步证明，在某些实际信噪比条件下，由于重传造成的损耗可能非常高。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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VTC '98. 48th IEEE Vehicular Technology Conference. Pathway to Global Wireless Revolution (Cat. No.98CH36151)

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