Digital Predistortion of Power Amplifier Non-Linearities for Full-Duplex Transceivers

Non-linearities introduced by the power amplifier stage can significantly reduce the performance of self-interference cancellation in full-duplex transceivers. Accordingly, we propose a full-duplex system architecture that predistorts the digital baseband transmit signal to account for the non-linear memory effects of the power amplifier. Implementation results for a 5 MHz OFDM signal (operating with 20 dBm average transmit power) on a full-duplex testbed show that a further 13 dB suppression can be obtained, compared to the case when no predistortion is applied. The power levels of out-of-band emissions are also significantly reduced.


Published in:
2016 Ieee 17Th International Workshop On Signal Processing Advances In Wireless Communications (Spawc)
Presented at:
17th IEEE International workshop on Signal Processing Advances in Wireless Communications, Edinburgh, Scotland, UK, July 3-6, 2016
Year:
2016
Publisher:
New York, Ieee
ISSN:
2325-3789
ISBN:
978-1-5090-1749-2
Keywords:
Laboratories:




 Record created 2016-06-15, last modified 2018-09-13


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