Method and apparatus for improving power amplifier efficiency in wireless communication systems having high peak to average power ratios
摘要
A power management system and method for a wireless communication device generates an average desired transmit power signal based on at least one of a received signal strength indicator signal and a power control instruction signal from a base station. A power supply level adjustment signal is generated based on the data parameters of an outgoing data stream and at least one environmental information signal. A combination of the power supply level adjustment signal and the average desired transmit power or a gain control signal and an altered version of the power supply level adjustment signal is used to generate a variable power supply signal that is provided to an output amplifier block for sufficiently generating outgoing wireless device radio signals while reducing power loss in the output amplifier block. <IMAGE>
申请公布号
EP1569330(B8)
申请公布日期
2006.06.28
申请号
EP20040003949
申请日期
2004.02.20
申请人
RESEARCH IN MOTION LIMITED
发明人
CHAN, WEN-YEN;KHAN, NASSERULLAH;JIAO, QINGZHONG;JIN, XIN;SANGARY, NAGULA THARMA;HABICHER, MICHAEL F.