| LTE-Advanced中的下行8天线码本设计 |
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| 引用本文： | 焦慧颖.LTE-Advanced中的下行8天线码本设计[J].电信网技术,2010(12):6-9. |
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| 作者姓名： | 焦慧颖 |
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| 作者单位： | 工业和信息化部电信研究院通信标准研究所; |
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| 摘 要： | LTE-Advanced在LTE下行MIMO4天线的基础上引入8天线的设计,预编码码本的设计是很重要的一项内容,影响到上行反馈模式和反馈开销等,因此需要针对8天线的配置优先场景,设计出性能和开销均为最优的码本。本文讨论了3GPP对8天线配置场景的优先级,分析了3种具体的码本设计方案,包括基于波束扫描的码本（GoB码本）、差分码本和自适应码本,并从性能、开销等方面比较了3种码本设计方案,最后对3GPP最终采用的8天线码本设计方案原理进行了介绍。
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| 关 键 词： | LTE-Advanced 下行MIMO 码本设计 |
Downlink 8 Antenna Codebook Design in LTE Advanced |
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| Abstract: | In LTE-Advanced, downlink MIMO will be extended to 8 antennas, designing codebooks for 8 antennas is one of the most important jobs to do. According to the priorities of 8 antenna deployment scenarios, different designing schemes of 3GPP are discussed in this paper, the comparisons between these different designing schemes are also given from both performance and overhead point of view. |
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| Keywords: | LTE-Advanced downlink MIMO codebook design |
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