Adaptive modulation
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United States of America Patent
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May 2, 2017
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N/A
app pub date -
Nov 17, 2015
filing date -
May 17, 2013
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Abstract
A wireless communication system includes first and second transceivers operable to transmit and receive signals over a communication channel using a plurality of modulation modes. A first signal is received which has been transmitted using a first modulation mode over the communication channel from the first transceiver to the second transceiver, and a first channel equalization characteristic for an equalizer of a first type for receiving the first signal at the second transceiver is determined from measurements of the communication channel. From the first channel equalization characteristic, a second channel equalization characteristic is determined for an equalizer of a second type for a second modulation mode. A measure of a difference between the second and the first channel equalization characteristics is determined, and the second modulation mode is selected for transmission over the communication channel from the first transceiver at least in part in dependence on the measure.
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