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.
WOS:000382942700086
2016
978-1-5090-1749-2
New York
5
IEEE International Workshop on Signal Processing Advances in Wireless Communications
REVIEWED
Event name | Event place | Event date |
Edinburgh, Scotland, UK | July 3-6, 2016 | |