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The effect of HPA non-linearity on the repeater signal with feedback and combined compensation

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3 Author(s)
Min Kim ; Dept. of Inf. Commun. Eng., Chungnam Nat. Univ., Daejeon, South Korea ; Changsoo Eun ; Ogunfunmi, T.

Cancellation of echoes in mobile communication systems using repeaters and satellites is an on-going research issue. We show that the echoes in the repeaters can be eliminated if the non-linearity of HPA (High Power Amplifier) at the re-transmitter is compensated. We propose an echo cancellation using the indirect learning architecture (ILA) along with the pre-distorter for the HPA. We verify the performance of the proposed echo cancellation through computer simulation.

Published in:

Circuits and Systems (MWSCAS), 2011 IEEE 54th International Midwest Symposium on

Date of Conference:

7-10 Aug. 2011

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