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I/Q Imbalance in Two-Way AF Relaying: Power Allocation and Performance Analysis
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- Li, Jingya, 1986 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Matthaiou, Michail, 1981 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Svensson, Tommy, 1970 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
- (creator_code:org_t)
- ISBN 9781479920037
- 2014
- 2014
- English.
- In: IEEE International Conference on Communications, ICC 2014, Sydney, Australia. - 9781479920037 ; , s. 5042-5048
- Conference paper (peer-reviewed)
Abstract
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- 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.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Telekommunikation (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Telecommunications (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Signalbehandling (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Signal Processing (hsv//eng)
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