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.
申请公布号
WO2010120221(A1)
申请公布日期
2010.10.21
申请号
WO2009SE50413
申请日期
2009.04.22
申请人
TELEFONAKTIEBOLAGET L M ERICSSON (PUBL);RINGSTROEM, MARKUS;OVESJOE, FREDRIK;GOERANSSON, BO
发明人
RINGSTROEM, MARKUS;OVESJOE, FREDRIK;GOERANSSON, BO