I/Q Imbalance in Two-Way AF Relaying: Power Allocation and Performance Analysis
Paper in proceeding, 2014
We investigate the performance of dual-hop two-way amplify-and-forward (AF) relaying in the presence of in-phase and quadrature-phase imbalance (IQI) at the relay node. In particular, the effective signal-to-interference-plus-noise ratio (SINR) at both sources is derived. These SINRs are used to design an instantaneous power allocation scheme, which maximizes the minimum SINR of the two sources under a total transmit power constraint. The solution to this optimization problem is analytically determined and used to analytically investigate the outage probability (OP) of the considered two-way AF relaying system. Both analytical and numerical results show that IQI can create fundamental performance limits on relaying systems, which cannot be avoided by simply improving the channel conditions.
Author
Jingya Li
Chalmers, Signals and Systems, Communication, Antennas and Optical Networks
Michail Matthaiou
Chalmers, Signals and Systems, Signal Processing and Biomedical Engineering
Tommy Svensson
Chalmers, Signals and Systems, Communication, Antennas and Optical Networks
Published in
IEEE International Conference on Communications, ICC 2014, Sydney, Australia
p. 5042-5048 art. no 6884120
978-147992003-7 (ISBN)
Categorizing
Areas of Advance
Information and Communication Technology
Subject Categories (SSIF 2011)
Telecommunications
Signal Processing
Identifiers
DOI
10.1109/ICC.2014.6884120
ISBN
978-147992003-7