专利名称：Reference signal design for distributed
antenna systems
发明人：Gao, Long申请号：EP12177858.3申请日：20120725公开号：EP2552046A2公开日：20130130
专利附图：
摘要：In a distributed antenna system (DAS), the number of physical antennas isusually larger than that of the antenna ports supported by LTE/LTE-A RS pattern in eachcell (303). Systems and methods are directed to a RS transmission scheme in which the
RRHs (301, 501) (or RRH groups (G1-G6)) are dynamically scheduled and mapped to theantenna ports for RS transmission based on user density distribution such that theaccuracy of the channel state information (CSI) estimation in the DAS is optimized.
申请人：Hitachi Ltd.
地址：6-6 Marunouchi 1-chome, Chiyoda-ku Tokyo 100-8280 JP
国籍：JP
代理机构：MERH-IP Matias Erny Reichl Hoffmann
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