Research Article
Feasibility of Inband Full-Duplex Radio Transceivers with Imperfect RF Components: Analysis and Enhanced Cancellation Algorithms
@INPROCEEDINGS{10.4108/icst.crowncom.2014.255474, author={Dani Korpi and Lauri Anttila and Mikko Valkama}, title={Feasibility of Inband Full-Duplex Radio Transceivers with Imperfect RF Components: Analysis and Enhanced Cancellation Algorithms}, proceedings={DUPLO Workshop on Full-Duplex Radios and Systems}, publisher={IEEE}, proceedings_a={DUPLO WORKSHOP}, year={2014}, month={7}, keywords={digital cancellation full-duplex iq imaging nonlinear distortion rf cancellation}, doi={10.4108/icst.crowncom.2014.255474} }- Dani Korpi
Lauri Anttila
Mikko Valkama
Year: 2014
Feasibility of Inband Full-Duplex Radio Transceivers with Imperfect RF Components: Analysis and Enhanced Cancellation Algorithms
DUPLO WORKSHOP
ICST
DOI: 10.4108/icst.crowncom.2014.255474
Abstract
In this paper we provide an overview regarding the feasibility of in-band full-duplex transceivers under imperfect RF components. We utilize results and findings from the recent research on full-duplex communications, while introducing also transmitter-induced thermal noise into the analysis. This means that the model of the RF impairments used in this paper is the most comprehensive thus far. By assuming realistic parameter values for the different transceiver components, it is shown that IQ imaging and transmitter-induced nonlinearities are the most significant sources of distortion in in-band full-duplex transceivers, in addition to linear self-interference. Motivated by this, we propose a novel augmented nonlinear digital self-interference canceller that is able to model and hence suppress all the essential transmitter imperfections jointly. This is also verified and demonstrated by extensive waveform simulations.