用于LTE MU-MIMO的标签迫零波束成形技术（英文）  

Labeling-based Zero-forcing Beamforming for LTE MU-MIMO

作　　者：赵松峄[1] 张碧军[1] 

机构地区：[1]上海贝尔股份有限公司,上海201206

出　　处：《电讯技术》2014年第11期1463-1467,共5页Telecommunication Engineering

摘　　要：提出了一种聪明的TD-LTE MIMO操作模式,它结合了波束成形技术和闭环反馈MIMO的优点。当eNB获得UE上行SRS参考信号的信道信息,L1进行基于码本的信道估计量化和标签化。L1将标签上传到L2,L2基于标签进行多用户调度,这样较好地解决了基于迫零的UE配对和L1/L2间跨层资源分配这两个问题。L1无需更多计算便可生成波束成形的预编码矩阵。同时,提出了在可接受的次优性能下一种易实现的一般性框架。为了达到目标,给出了新的码本设计标准和快速预编码矩阵的生成算法。A smart MU-MIMO operation method in TD-LTE system is proposed,which combines the merits of both BF( Beamforming) and CL-MIMO( Closed Loop MIMO) . Once obtaining the estimated channel in-formation when receiving UL-SRS(Uplink Sounding Reference Signal) from UE,the eNB will quantify them as labels using pre-determined codebook in physical layer L1 . Then L1 conveys those chosen labels to L2 in which scheduler will use those labels for MU scheduling. It will well solve the two problems of zero-forcing UEs pairing and the cross-layer resource allocation procedure between L1 and L2. And finally,L1 will generate the BF precoding matrix without heavy computation. This paper proposes a general framework for the system implementation with anticipated sub-optimal performance. To reach the objectives,new de-sign criteria on codebook and quick algorithm for generation on precoding matrix are proposed.

关 键 词：MU-MIMO 波束成形 迫零 码本设计标准 

分 类 号：TN925.93[电子电信—通信与信息系统]