发明名称 |
SYSTEMS AND METHODS FOR RADIO FREQUENCY CALIBRATION EXPLOITING CHANNEL RECIPROCITY IN DISTRIBUTED INPUT DISTRIBUTED OUTPUT WIRELESS COMMUNICATIONS |
摘要 |
Systems and methods are described for radio frequency (RF) calibration in a multiple antenna system (MAS) with multi-user (MU) transmissions (“MU-MAS”) exploiting uplink/downlink channel reciprocity. The RF calibration is used to compute open-loop downlink precoder based on uplink channel estimates, thereby avoiding feedback overhead for channel state information as in closed-loop schemes. For example, a MU-MAS of one embodiment comprises a wireless cellular network with one or multiple beacon stations, multiple client devices and multiple distributed antennas operating cooperatively via precoding methods to eliminate inter-client interference and increase network capacity. |
申请公布号 |
US2014269502(A1) |
申请公布日期 |
2014.09.18 |
申请号 |
US201313844355 |
申请日期 |
2013.03.15 |
申请人 |
Forenza Antonio;Saibi Fadi;Pitman Timothy A.;Perlman Stephen G. |
发明人 |
Forenza Antonio;Saibi Fadi;Pitman Timothy A.;Perlman Stephen G. |
分类号 |
H04B7/04 |
主分类号 |
H04B7/04 |
代理机构 |
|
代理人 |
|
主权项 |
1. A multiple antenna system (MAS) with multiuser (MU) transmissions (“MU-MAS”) that employs radio frequency (RF) calibration and exploits reciprocity between downlink (DL) and uplink (UL) channels, comprising of multiple distributed antennas, multiple client devices and one or multiple beacon stations. |
地址 |
Palo Alto CA US |