发明名称 |
System and method for distributed input-distributed output wireless communications |
摘要 |
A system and method are described for dynamically adapting the communication characteristics of a multiple antenna system (MAS) with multi-user (MU) transmissions (“MU-MAS”). For example, a method according to one embodiment of the invention comprises: transmitting a training signal from each antenna of a base station to each of a plurality of wireless client devices, each of the client devices analyzing each training signal to generate channel characterization data, and receiving the channel characterization data at the base station; computing a plurality of MU-MAS precoder weights based on the channel characterization data, the combined MU-MAS precoder weights comprising a MU-MAS channel matrix; determining instantaneous or statistical channel quality (“link quality metric”) for the wireless client devices using mutual information of MU-MAS links or singular values of the MU-MAS composite channel matrix; determining a subset of users and a MU-MAS transmission mode based on the link quality metric; precoding data using the MU-MAS precoder weights to generate precoded data signals for each antenna of the base station; and transmitting the precoded data signals through each antenna of the base station to each respective client device within the selected subset. |
申请公布号 |
US8160121(B2) |
申请公布日期 |
2012.04.17 |
申请号 |
US20080143503 |
申请日期 |
2008.06.20 |
申请人 |
FORENZA ANTONIO;HEATH, JR. ROBERT W.;PERLMAN STEPHEN G.;REARDEN, LLC |
发明人 |
FORENZA ANTONIO;HEATH, JR. ROBERT W.;PERLMAN STEPHEN G. |
分类号 |
H04L27/30 |
主分类号 |
H04L27/30 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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