发明名称 |
System, method and apparatus for mobile transmit diversity using symmetric phase difference |
摘要 |
Communication is performed for a first communication device having a set of antenna elements. A quality-indication signal is received from a second communication device (e.g., a basestation). A complex weighting is calculated based on the quality-indication signal. A pre-transmission signal is modified based on the complex transmit diversity weighting to produce a set of modified-pre-transmission signals, wherein the modifications are symmetric by making approximately half the magnitude of the transmit diversity modification to one signal in a first direction, and approximately half the magnitude of the transmit diversity modification to the other signal in a second direction, opposite the first direction. Each modified pre-transmission signal from the set of modified-pre-transmission signals is uniquely associated with an antenna element from the set of antenna elements. The set of modified-pre-transmission signals is sent from the set of antenna elements to produce a transmitted signal. |
申请公布号 |
US8249187(B2) |
申请公布日期 |
2012.08.21 |
申请号 |
US20100766725 |
申请日期 |
2010.04.23 |
申请人 |
HAREL HAIM;CHEN PHIL F.;WANG SHERWIN J.;ABREU EDUARDO;GOOGLE INC. |
发明人 |
HAREL HAIM;CHEN PHIL F.;WANG SHERWIN J.;ABREU EDUARDO |
分类号 |
H04L27/00 |
主分类号 |
H04L27/00 |
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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