I/Q imbalance in two-way AF relaying: Power allocation and performance analysis

Jingya Li; Michail Matthaiou; Tommy Svensson

doi:10.1109/ICC.2014.6884120

I/Q imbalance in two-way AF relaying: Power allocation and performance analysis

Jingya Li, Michail Matthaiou, Tommy Svensson

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

2 Citations (Scopus)

Abstract

We investigate the performance of dual-hop two-way amplify-and-forward (AF) relaying in the presence of inphase 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 evaluate 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 two-way relaying, which cannot be avoided by simply improving the channel conditions.

Original language	English
Title of host publication	2014 IEEE International Conference on Communications (ICC)
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	978-1-4799-2003-7
DOIs	https://doi.org/10.1109/ICC.2014.6884120
Publication status	Published - Aug 2014

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title = "I/Q imbalance in two-way AF relaying: Power allocation and performance analysis",

abstract = "We investigate the performance of dual-hop two-way amplify-and-forward (AF) relaying in the presence of inphase 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 evaluate 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 two-way relaying, which cannot be avoided by simply improving the channel conditions.",

author = "Jingya Li and Michail Matthaiou and Tommy Svensson",

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T1 - I/Q imbalance in two-way AF relaying: Power allocation and performance analysis

AU - Li, Jingya

AU - Matthaiou, Michail

AU - Svensson, Tommy

PY - 2014/8

Y1 - 2014/8

N2 - We investigate the performance of dual-hop two-way amplify-and-forward (AF) relaying in the presence of inphase 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 evaluate 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 two-way relaying, which cannot be avoided by simply improving the channel conditions.

AB - We investigate the performance of dual-hop two-way amplify-and-forward (AF) relaying in the presence of inphase 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 evaluate 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 two-way relaying, which cannot be avoided by simply improving the channel conditions.

U2 - 10.1109/ICC.2014.6884120

DO - 10.1109/ICC.2014.6884120

M3 - Conference contribution

BT - 2014 IEEE International Conference on Communications (ICC)

PB - Institute of Electrical and Electronics Engineers Inc.

ER -

I/Q imbalance in two-way AF relaying: Power allocation and performance analysis

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