| LTE系统中的分布式空时中继技术 |
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| 引用本文： | 卫国,张超,王磊.LTE系统中的分布式空时中继技术[J].中兴通讯技术,2010,16(1):18-22. |
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| 作者姓名： | 卫国 张超 王磊 |
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| 作者单位： | 中国科学技术大学,无线网络通信安徽省重点实验室,安徽,台肥,230027 |
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| 摘 要： | 中继技术作为LTE-Advanced系统的关键候选技术可为小区带来更大的覆盖范围和系统容量。分布式空时中继技术不仅可以充分利用中继技术带来的空间分集，又可以引入部分编码增益，是中继技术中最直接的应用技术。比较目前提出的分布式空时中继方案，得出基于解调-转发方式的空时中继编码方案最适合LTE—Advanced系统的方案。同时，针对解调-转发方式中存在的错误传递问题，提出基于门限的选择性空时中继方案，该方案以很小的系统复杂度换取了优异的性能增益。
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| 关 键 词： | 长期演进 中继技术 分布式空时编码 解调转发 |
Distributed Space-Time Coding in LTE System |
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| WEI Guo,ZHANG Chao,WANG Lei.Distributed Space-Time Coding in LTE System[J].ZTE Communications,2010,16(1):18-22. |
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| Authors: | WEI Guo ZHANG Chao WANG Lei |
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| Affiliation: | WEI Guo ZHANG Chao WANG Lei (Wireless Information Network Lab,University of Science , Technology of China,Hefei 230027,China) |
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| Abstract: | Relay is considered as one of the candidate key technologies for LTE-advanced system because it may enlarge cell coverage and enhance system capacity.Distributed Space-Time Coding (DSTC) not only exploits the spatial diversity from the relay structure,but also introduces partial coding gains.According to the performances of existing DSTC schemes,the Demodulate-and-Forward (DMF) scheme is the best candidate for DSTC in LTE-Advanced system.Moreover,a threshold-based selective relaying scheme for DSTC is propo... |
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| Keywords: | LTE relay technology distributed space-time coding demodulate-and-forward |
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