Balatsoukas-Stimming, AlexiosBelanovic, PavleAlexandris, KonstantinosBurg, Andreas2013-12-162013-12-162013-12-16201310.1109/ACSSC.2013.6810439https://infoscience.epfl.ch/handle/20.500.14299/97964Full-duplex wireless communication offers improved spectral efficiency, as well as more efficient relaying and medium access, but requires suppression of self-interference. In this paper we analyze the existing methods for active RF suppression and use the ”Rice architecture” for its low complexity and favorable scaling when applied to multi-antenna systems. We analyze the effects of the different sources of self-interference and quantify the potential for further suppression (genie-aided suppression). Our single-chain implementation using a circulator achieves −48 dB of active RF suppression, but only −66 dB of total suppression in the analog domain. On the other hand, our single-chain implementation using separate antennae reaches −85 dB of total analog suppression, thus reducing the self-interference to the noise floor. Extending these setups, we present a low complexity implementation of a 2 × 2 full-duplex MIMO node, which achieves even higher suppression than the single-chain counterparts.text::conference output::conference proceedings::conference paper