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PROJECT TITLE :

Receiver-aided predistortion of power amplifier non-linearities in cellular networks

ABSTRACT:

In this study a novel scheme of predistortion of power amplifier non-linearities is developed and demonstrated. The originality of the proposed system architecture is that the estimation of non-linearities is carried out at the receiver, thanks to a training sequence, and sent back to the transmitter for predistortion. The proposed architecture achieves efficient compensation of power amplifier non-linearities on WiMAX and long-term evolution (LTE) standards without extra hardware. An evaluation of power consumption savings is carried out, considering digital consumption of the estimation algorithm at the receiver side and predistortion look up table refreshment at the transmitter side. The results show that the suggested architecture can be applied for high data rate systems at base stations, relay stations and mobile stations as well.


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