The invention provides a multi antenna emission method and a multi antenna emission device. The method includes: through enhanced base station of M antennas, the uplink reference signal of the UE N antennas in turn to receive a UE in the UE continuous N uplink period; calculation of the N uplink channel estimation time corresponding, and merge the estimated matrix corresponding to the H channel the M antenna and the N antenna; to determine the relation between the port and the antenna downlink beamforming weights, and according to the downstream ports between the precoding weighting matrix and the downstream ports within the processing data of each layer to transmit, send out the antenna OFDM modulation. The method and apparatus of the present invention, using the up and down channel symmetry in TDD LTE wireless communication system, without the need for UE feedback beamforming weights of the index case, the low complexity algorithm of multi antenna downlink.
【技术实现步骤摘要】
【技术保护点】
一种多天线发射方法，应用在时分双工的长期演进系统中，其特征在于，包括以下步骤： Ａ，增强型基站通过本基站的Ｍ个天线，接收ＵＥ在该ＵＥ的连续Ｎ个上行时段内采用该ＵＥ的Ｎ个天线轮流发射的上行参考信号； Ｂ，根据上行参考信号的预定值和各个上行 时段接收到的上行参考信号，分别计算所述Ｎ个上行时段各自对应的信道估计，并合并得到与所述Ｍ个天线和所述Ｎ个天线对应的信道估计矩阵Ｈ； Ｃ，根据Ｈ的秩ｖ确定下行端口的数目Ｌ，并将所述Ｍ个天线平均分配到各个下行端口； Ｄ，从Ｈ中选取与各下行端 口所分配的天线有关的元素，构造各下行端口对应的信道估计矩阵Ｈ↓［ＢＦ］↑［ｌ］，并计算各下行...
【技术特征摘要】
【专利技术属性】
技术研发人员：李斌，
申请(专利权)人：中兴通讯股份有限公司，
类型：发明
国别省市：94[中国|深圳]
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