Soft-decision and erasure decoding in fast frequency-hopping systems with convolutional, turbo, and Reed-Solomon codes
Soft-decision and erasure decoding in fast frequency-hopping systems with convolutional, turbo, and Reed-Solomon codes
复制标题
使用卷积码、涡轮码和里德所罗门码的快速跳频系统中的软判决和擦除解码
DOI：
10.1109/26.803499
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发表时间：
1999
期刊：
影响因子：
--
通讯作者：
P. Robertson
中科院分区：
文献类型：
--
作者：
U. Fiebig;P. Robertson
在这篇文章中，我们对快速跳频/多频移键控多址系统中使用的各种编码和解码技术进行了详尽的处理。主要目标之一是展示如何导出每个接收比特的可靠性信息以实现软决策解码。卷积码以及turbo码被认为应用软判决、擦除和硬判决解码。它们的性能与之前提出的仅错误解码或错误和擦除解码的 Reed-Solomon 的性能进行了比较。假设产生频率选择性衰落信道的移动无线电环境。结果表明，应用带有软判决解码的turbo码和卷积码可以允许与带有错误和擦除解码的里德-所罗门码相当数量的同时传输用户。此外，还显示了软决策的优点，它可以应用于广泛且不断增长的信道代码。本文描述了计算软决策的相关技术。
In this contribution we present an exhaustive treatment of various coding and decoding techniques for use in fast frequency-hopping/multiple frequency shift keying multiple-access systems. One of the main goals is to show how reliability information on each received bit can be derived to enable soft-decision decoding. Convolutional codes as well as turbo codes are considered applying soft-decision, erasure, and hard-decision decoding. Their performance is compared to that of previously proposed Reed-Solomon with either errors-only or errors-and-erasures decoding. A mobile radio environment yielding a frequency-selective fading channel is assumed. It is shown that the application of turbo codes and convolutional codes with soft decision decoding can allow for a comparable number of simultaneously transmitting users to Reed-Solomon codes with errors-and-erasures decoding. Furthermore, the advantage of soft decisions is shown, which can be applied to a widely and growing range of channel codes. The pertinent technique of calculating soft decisions is described in the paper.