Imperial College London
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ProfessorBrunoClerckx

Faculty of Engineering, Department of Electrical and Electronic Engineering

Professor of Wireless Communications and Signal Processing
 
 
 
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Contact

 

+44 (0)20 7594 6234b.clerckx Website

 
 
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Location

 

816Electrical EngineeringSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Huang:2016:10.1109/TWC.2016.2577581,
author = {Huang, Y and Clerckx, B},
doi = {10.1109/TWC.2016.2577581},
journal = {IEEE Transactions on Wireless Communications},
pages = {6033--6047},
title = {Relaying Strategies for Wireless-Powered MIMO Relay Networks},
url = {http://dx.doi.org/10.1109/TWC.2016.2577581},
volume = {15},
year = {2016}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - This paper investigates relaying schemes in an amplify-and-forward multiple-input multiple-output relay network, where an energy-constrained relay harvests wireless power from the source information flow and can be further aided by an energy flow (EF) in the form of a wireless power transfer at the destination. However, the joint optimization of the relay matrix and the source precoder for the energy-flow-assisted (EFA) and the non-EFA (NEFA) schemes is intractable. The original rate maximization problem is transformed into an equivalent weighted mean square error minimization problem and optimized iteratively, where the global optimum of the nonconvex source precoder subproblem is achieved by semidefinite relaxation and rank reduction. The iterative algorithm finally converges. Then, the simplified EFA and NEFA schemes are proposed based on channel diagonalization, such that the matrices optimizations can be simplified to power optimizations. Closed-form solutions can be achieved. Simulation results reveal that the EFA schemes can outperform the NEFA schemes. Additionally, deploying more antennas at the relay increases the dimension of the signal space at the relay. Exploiting the additional dimension, the EF leakage in the information detecting block can be nearly separated from the information signal, such that the EF leakage can be amplified with a small coefficient.
AU  - Huang,Y
AU  - Clerckx,B
DO  - 10.1109/TWC.2016.2577581
EP  - 6047
PY  - 2016///
SN  - 1558-2248
SP  - 6033
TI  - Relaying Strategies for Wireless-Powered MIMO Relay Networks
T2  - IEEE Transactions on Wireless Communications
UR  - http://dx.doi.org/10.1109/TWC.2016.2577581
UR  - http://hdl.handle.net/10044/1/33757
VL  - 15
ER  -
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