Two-way Relaying under the Presence of Relay Transceiver Hardware

Michail Matthaiou (1) , Agisilaos Papadogiannis (1) , Emil Bjornson (2, 3) , Merouane Debbah (3)

1 Department of Signals and Systems, Chalmers University of Technology
2 KTH - Royal Institute of Technology [Stockholm]
3 Chaire Radio Flexible - Chaire Radio Flexible Alcatel-Lucent/Supélec

Hardware impairments in physical transceivers are known to have a deleterious effect on communication systems; however, very few contributions have investigated their impact on relaying. This paper quantifies the impact of transceiver impairments in a two-way amplify-and-forward configuration. More specifically, the effective signal-to-noise-and-distortion ratios at both transmitter nodes are obtained. These are used to deduce exact and asymptotic closed-form expressions for the outage probabilities (OPs), as well as tractable formulations for the symbol error rates (SERs). It is explicitly shown that non-zero lower bounds on the OP and SER exist in the high-power regime---this stands in contrast to the special case of ideal hardware, where the OP and SER go asymptotically to zero.

Michail Matthaiou, Agisilaos Papadogiannis, Emil Bjornson, Merouane Debbah. Two-way Relaying under the Presence of Relay Transceiver Hardware. IEEE Communications Letters, 2013, 17 (6), pp.1136-1139. ⟨10.1109/LCOMM.2013.042313.130191⟩. ⟨hal-00933768⟩