An adaptable LTE turbo decoder for indoor/low range outdoor environment: A study on low bit rates
An adaptable LTE turbo decoder for indoor/low range outdoor environment: A study on low bit rates
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DOI：
10.1109/dt.2015.7222958
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发表时间：
2015-07
期刊：
影响因子：
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通讯作者：
C. Chaikalis;V. Vlachos;Charalampos Liolios
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文献类型：
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作者：
C. Chaikalis;V. Vlachos;Charalampos Liolios
在这项工作中，我们研究了一个自适应SOVA/log-MAP涡轮解码器的LTE移动的标准和平坦瑞利衰落信道。特别地，该解码器被示出为动态地适应不同的服务场景，考虑室内/低范围室外操作环境（移动的速度为4 km/h）的性能和复杂度等参数。我们专注于物理共享信道，并使用流水线涡轮解码器结构与12次迭代。我们研究了两种低数据速率，对于每一种数据速率，我们考虑使用五个帧长度的九种可能的QCI。考虑到每个QCI的BER和延迟限制，SOVA被提出用于0.5 Mbps的大多数情况，而任一算法都可以用于10 Mbps和具有严格BER限制的QCI。
In this work we study an adaptable SOVA/log-MAP turbo decoder for LTE mobile standard and flat Rayleigh fading channel. Particularly, this decoder is shown to adapt dynamically to different service scenarios, considering parameters like performance and complexity for indoor/low range outdoor operating environment (mobile speed of 4 km/h). We concentrate on physical shared channel and use pipeline turbo decoder architecture with 12 iterations. We examine two low data rates and for each one we consider the nine possible QCIs using five frame lengths. Considering BER and delay limitations for each QCI, SOVA is proposed for most of the cases for 0.5 Mbps, while either algorithm can be used for 10 Mbps and QCIs with tight BER limit.