Two-Way Relaying under the Presence of Relay Transceiver Hardware Impairments

Abstract

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.

Published in IEEE Communications Letters, 4 pages, 3 figures. The results can be reproduced using the following Matlab code: https://github.com/emilbjornson/twoway-relaying-hardware-impairments

Cited by in corpus (4)

• A New Look at Dual-Hop Relaying: Performance Limits with Hardware Impairments
• Asymmetric RF/FSO Relaying with HPA non-Linearities and Feedback Delay Constraints
• Partial Relay Selection For Hybrid RF/FSO Systems with Hardware Impairments
• Impact of Non-Linear High-Power Amplifiers on Cooperative Relaying Systems