发明名称 |
Multi-User Downlink Linear MIMO Precoding System |
摘要 |
Multi-user (MU-) MIMO systems with quantized feedback are designed to maximize the sum-rate via scheduling and linear precoding. To maximize throughput over the network, quantized CSIT is sent through a low-rate feedback link feedback from a plurality of users back to a base station. The base station then determines a subset of the plurality of users to transmit one or more signals to based on the received feedback and determines a preceding matrix based on the received feedback from the plurality of users wherein the precoding matrix maximizes a sum-rate throughput for the subset of the plurality of users. Additionally, based on the received feedback, the base station designs a quantization codebook. This codebook may be designed off-line and/or online. The codebook and/or precoding matrix are used to transmit signals to the users.
|
申请公布号 |
US2012033756(A1) |
申请公布日期 |
2012.02.09 |
申请号 |
US201113273880 |
申请日期 |
2011.10.14 |
申请人 |
KHOJASTEPOUR MOHAMMAD A.;WANG XIAODONG;MADIHIAN MOHAMMAD;NEC LABORATORIES AMERICA, INC. |
发明人 |
KHOJASTEPOUR MOHAMMAD A.;WANG XIAODONG;MADIHIAN MOHAMMAD |
分类号 |
H04L1/02 |
主分类号 |
H04L1/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|