TRANSMISSION POWER OPTIMIZATION
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United States of America Patent
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Issued Date -
May 15, 2008
app pub date -
Nov 13, 2006
filing date -
Nov 13, 2006
priority date (Note) -
Abandoned
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Abstract
A transceiver at one end of a variable data rate, time division duplex (TDD), adaptively modulated, point-to-point radio link transmits one or more pulses at different amplitude levels during a settling period of the transceiver's power amplifier. The highest level of the pulses is set to a level higher than the mean level of an OFDM symbol in a transmit burst immediately following the transmitted pulses, and is incrementally increased with each successive burst. A second transceiver at the opposite end of the link receives the transmitted pulses as time domain samples, normalizes the samples, and performs a cross correlation of the samples corresponding to the received pulses. When the cross correlation indicates that the power amplifier is operating at a maximal power level with regard to the amplifier linearity and the modulation mode and coding rate currently in use, the incremental increase of the transmission power ceases.
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