公开(公告)号：US20110261897A1

公开(公告)日：2011-10-27

申请号：US13165481

申请日：2011-06-21

申请人： Yu-Chih JEN ,  Ping-Cheng YEH ,  Ling-San MENG ,  Pang-Chang LAN ,  Chih-Yao WU

发明人： Yu-Chih JEN ,  Ping-Cheng YEH ,  Ling-San MENG ,  Pang-Chang LAN ,  Chih-Yao WU

IPC分类号： H04L27/28

CPC分类号： H04L25/03343 ,  H04B7/0639 ,  H04B7/0663 ,  H04L25/0202

摘要： A method for reducing the quantization effect of precoding operations utilizing a finite codebook in MIMO systems is provided. First, at the receiver side, downlink channel state information is obtained and a set of indices of precoding matrices within a plurality of finite codebooks are selected accordingly. The selected indices of precoding matrices for each of the finite codebooks and a set of scalar coefficients are transmitted from the receiver to the transmitter. Thereafter, at the transmitter side, at least a first and a second refined precoding matrices are generated based on the selected set of indices of precoding matrices for all of the finite codebooks, and the one or more scalar coefficients and a final precoding matrix is generated at least based on the first refined precoding matrix and the second refined precoding matrix. The final precoding matrix is applied for transmission between the transmitter and the receiver.

摘要翻译： 提供了一种在MIMO系统中减少利用有限码本的预编码操作的量化效应的方法。 首先，在接收侧，获得下行链路信道状态信息，并且相应地选择多个有限码本内的预编码矩阵的索引集合。 用于每个有限码本的预编码矩阵的选定索引和一组标量系数从接收器发送到发送器。 此后，在发射机侧，基于所有有限码本的预编码矩阵的选择的索引集合生成至少第一和第二精细预编码矩阵，并且生成一个或多个标量系数和最终预编码矩阵 至少基于第一精炼预编码矩阵和第二精细预编码矩阵。 最后的预编码矩阵被应用于发射机和接收机之间的传输。