The invention discloses a pre encoding matrix index feedback method and device, the pre encoding matrix index feedback method includes: determining the rank of MIMO SU R and MU MIMO pre encoding matrix of rank 1 pre encoding matrix, wherein, R is more than 1, the MU - MIMO rank 1 pre encoding matrix is the best rank. The rank of R pre encoding matrix of the SU MIMO in 1 pre encoding matrix; according to the rank of R pre encoding matrix of the MU - MIMO rank 1 pre encoding matrix in the SU MIMO position, determined that the MU MIMO rank 1 pre encoding matrix PMI with respect to the SU the rank of MIMO r pre encoding matrix of PMI offset; rank r matrix encoding the pre feedback SU MIMO PMI, and the offset . The present invention can reduce the overhead of precoding matrix index feedback.
【技术实现步骤摘要】
【技术保护点】
1.一种预编码矩阵索引反馈方法,其特征在于,包括:确定SU-MIMO(Single user Multiple Input Multiple Output,单用户多入多出)的秩r预编码矩阵和MU-MIMO(Multi-user Multiple Input Multiple Output,多用户多入多出)的秩1预编码矩阵,其中,r>1,所述MU-MIMO的秩1预编码矩阵是,所述SU-MIMO的秩r预编码矩阵中最好的秩1预编码矩阵;根据所述MU-MIMO的秩1预编码矩阵在所述SU-MIMO的秩r预编码矩阵的位置,确定所述MU-MIMO的秩1预编码矩阵的PMI(precodin ...
【技术特征摘要】
【专利技术属性】
技术研发人员:吴强,高驰,周永行,
申请(专利权)人:华为技术有限公司,
类型:发明
国别省市:94[]
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