Improvement in bit error rate of in-band full-duplex transceiver using clipping and clip-noise compensation techniques

Abstract

In this letter, we propose clipping and clip-noise compensation techniques that improve the self-interference (SI) cancellation and bit error rate (BER) performance of an in-band full-duplex transceiver under power amplifier (PA) nonlinearities. These techniques can be used to improve performance without increasing the order of the parallel Hammerstein canceller. We introduce a clipping at the transmitter that suppresses nonlinear amplification of a PA to improve the SI cancellation performance. Furthermore, clip-noise compensation is presented at the receiver that prevents degradation of the BER performance caused by clipping.