Method and system for minimizing power consumption in a communication system
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United States of America Patent
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Nov 9, 2010
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app pub date -
Sep 29, 2006
filing date -
Sep 29, 2006
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Abstract
A method and system for minimizing power consumption in a communication system is provided. The method may include adjusting the supply voltage of a linear amplifier, which may be used for amplifying a RF signal, in proportion to the envelope of the baseband of the RF signal. The signals may correspond to a variety of communication protocols. For example, WCDMA, HSDPA, HSUDPA, GSM, GPRS, EDGE, WiMAX, OFDM, UWB, ZigBee, and BlueTooth. The baseband signal may be delayed by a number of samples before being input into the amplifier. The envelope may be measured by evaluating a plurality of I and Q samples from the baseband signal. The number of samples may be calculated by measuring the intermodulation distortion at the output of the amplifier. The supply voltage may be generated by a switching regulator. The method may also include adjusting a bias voltage of the amplifier in proportion to the envelope of the baseband signal, where the bias voltage may control the gain of the amplifier. The bias voltage may also be generated by a switching regulator.
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