LTE-Advanced系统下行参考信号设计技术
首发时间:2009-12-18
摘要:本文介绍了LTE-Advanced系统中下行参考信号的一些设计问题。由于LTE-Advanced系统需要达到更高的性能指标,并保证对LTE系统的兼容性,下行参考信号需要进行重新设计。文章首先介绍了LTE-Advanced系统的特点,之后指出了为什么下行参考信号要重新设计。随后重点讨论了具体的设计方法和遇到的问题。最后总结了设计中还有待解决的难点。
关键词: LTE-Advanced系统 参考信号 系统开销
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Consideration on Downlink Reference Signals Design for LTE-Advanced Systems
Abstract:In this paper we introduce several considerations on downlink reference signals (DL-RS) design for LTE-Advanced systems. In order to satisfy the higher performance requirements of LTE-Advanced systems which need to be highly compatible with the LTE standards, the DL-RS need to be redesigned. In the first part of this paper we introduce some important features of the LTE-Advanced systems. In the second part we point out the reason for redesigning of the DL-RS. In part 3 we discuss compatibility problems for the new DL-RS. In part 4 and 5 we discuss several methods to design the new CSI-RS and DM-RS accordingly. In part 6 we summarize some problems need to be solved later.
Keywords: LTE-Advanced Systems reference signals system overhead
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