发明公开
- 专利标题： TRANSMIT MODE SWITCHING FOR MIMO BASE STATIONS
- 专利标题（中）： 改变传输模式对于MIMO基站
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申请号： EP09788526.3申请日： 2009-04-22
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公开(公告)号： EP2420016A1公开(公告)日： 2012-02-22
- 发明人: RINGSTRÖM, Markus , OVESJÖ, Fredrik , GÖRANSSON, Bo
- 申请人： Telefonaktiebolaget LM Ericsson (publ)
- 申请人地址： 164 83 Stockholm SE
- 专利权人： Telefonaktiebolaget LM Ericsson (publ)
- 当前专利权人： Telefonaktiebolaget LM Ericsson (publ)
- 当前专利权人地址： 164 83 Stockholm SE
- 代理机构： Kühn, Friedrich Heinrich
- 优先权： US170167P 20090417
- 国际公布： WO2010120221 20101021
- 主分类号： H04L1/06
- IPC分类号： H04L1/06 ; H04B7/06
摘要：
In a transmitter using at least two transmitting antennas a STTD transmitter is used in combination with a common pre-coding transmitter for power amplifying power balancing. A selector can be provided for selecting data/channels transmitted using STTD and common pre-coding such that for one channel type, STTD or common pre-coding is used whereas the combination of both STTD and common pre-coding is used for a different data/channel type. By selectively using both STTD and common pre-coding for power amplifier power balancing, an improved power balancing is achieved. At the same time, the STTD gain is obtained in the relevant cases but the STTD loss in other cases is avoided.
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