Two-way relaying under the presence of relay transceiver hardware impairments

M Matthaiou, A Papadogiannis… - IEEE …, 2013 - ieeexplore.ieee.org
IEEE Communications Letters, 2013ieeexplore.ieee.org
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 …
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.
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