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Linearization method and the device of the power amplifier which uses predistortion inside the frequency domain
Linearization method and the device of the power amplifier which uses predistortion inside the frequency domain
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机译:线性化方法及在频域内使用预失真的功率放大器装置
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摘要
To mitigate the effects of non-linear amplification in a digital transmission system employing a multi-carrier multiplexing communications technique, such as orthogonal frequency division multiplexing or discrete multi-tone, predistortion of an input signal to a power amplifier with a non-linear transfer characteristic is performed in the frequency domain by modifying frequency-domain symbols used to modulate individual sub-carriers. The frequency-domain symbols are modified in a manner that compensates for the amplifier's non-linear transfer characteristic.
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