Conversion of the Spatio-Temporal Correlation from Uplink to Downlink in FDD Systems
Conversion of the Spatio-Temporal Correlation from Uplink to Downlink in FDD Systems
复制标题
FDD系统中上行链路到下行链路的时空相关性转换
DOI：
10.1109/wcnc.2009.4917640
复制
发表时间：
2009
期刊：
影响因子：
--
通讯作者：
G. Ascheid
中科院分区：
文献类型：
--
作者：
M. Jordan;Xitao Gong;G. Ascheid
在FDD系统中，可以通过上行链路测量和时间平均来获得上行链路时空相关知识。然而，许多算法需要了解下行链路的相关性，例如在空间相关情况下的基站发射波束形成和在时间相关情况下的用户信噪比预测算法。本文提出了两种将上行链路时空相关转换为下行链路时空相关的可能算法，并从链路级转换误差的角度比较了它们的性能。
In FDD systems, uplink spatio-temporal correlation knowledge can be obtained via uplink measurements and time-averaging. Many algorithms however require the knowledge of the downlink correlation, such as base-station transmit beam-forming in the case of spatial correlation and user SNR prediction algorithms in the case of temporal correlation. This paper presents two possible algorithms for the conversion of the uplink spatio-temporal correlation to its downlink counterpart and compares their performance in terms of the link-level conversion error.