Method and apparatus for improving power amplifier efficiency in wireless communication systems having high peak to average power ratios
First Claim
1. A power management system for providing a variable power supply signal to an output power amplifier block in a wireless communication device, the power management system comprising:
- (a) an average power and gain control block for providing a gain control signal and an average desired transmit power signal, the average desired transmit power signal being generated in response to at least one of a power control instruction signal and a received signal strength indicator signal;
(b) an environmental sensor unit for providing at least one environmental information signal;
(c) a power supply level adjustment generator connected to the environmental sensor unit for providing a power supply level adjustment signal in response to a data parameter indication of a baseband outgoing data stream to be transmitted by the wireless communication device and the at least one environmental information signal; and
, (d) a power supply means connected to the average power and gain control block for providing the variable power supply signal to the output power amplifier block in response to a combination of the average desired transmit power signal and the power supply level adjustment signal or a combination of the gain control signal and an altered version of the power supply level adjustment signal.
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Accused Products
Abstract
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.
82 Citations
19 Claims
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1. A power management system for providing a variable power supply signal to an output power amplifier block in a wireless communication device, the power management system comprising:
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(a) an average power and gain control block for providing a gain control signal and an average desired transmit power signal, the average desired transmit power signal being generated in response to at least one of a power control instruction signal and a received signal strength indicator signal;
(b) an environmental sensor unit for providing at least one environmental information signal;
(c) a power supply level adjustment generator connected to the environmental sensor unit for providing a power supply level adjustment signal in response to a data parameter indication of a baseband outgoing data stream to be transmitted by the wireless communication device and the at least one environmental information signal; and
,(d) a power supply means connected to the average power and gain control block for providing the variable power supply signal to the output power amplifier block in response to a combination of the average desired transmit power signal and the power supply level adjustment signal or a combination of the gain control signal and an altered version of the power supply level adjustment signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of supplying a variable power supply signal to an output power amplifier block in a wireless communications device that receives an incoming data stream from a base station radio signal and transmits an outgoing data stream in a wireless device radio signal, the method comprising:
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(a) detecting at least one of a signal strength of the base station radio signal to produce a received signal strength indicator signal, and a power control instruction signal in the base station radio signal;
(b) generating an average desired transmit power signal in response to at least one of the received signal strength indicator signal and the power control instruction signal;
(c) generating at least one environmental information signal for obtaining information about the environment of the wireless communications device;
(d) generating a power supply level adjustment signal based on a data parameter indication of a baseband outgoing data stream and the at least one environmental information signal; and
,(e) combining one of the average desired transmit power signal and the power supply level adjustment signal or a gain control signal and an altered version of the power supply level adjustment signal to generate the variable power supply signal, the gain control signal being derived based on at least one of the received signal strength indicator signal and the power control instruction signal, and providing the variable power supply signal to the output power amplifier block. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification