Imperial College London
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ProfessorJulieMcCann

Faculty of Engineering, Department of Computing

Vice-Dean (Research) for the Faculty of Engineering
 
 
 
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Contact

 

+44 (0)20 7594 8375j.mccann Website

 
 
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Assistant

 

Miss Teresa Ng +44 (0)20 7594 8300

 
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Location

 

260ACE ExtensionSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Liu:2017:10.1109/JSAC.2017.2726718,
author = {Liu, Y and Qin, Z and Elkashlan, M and Nallanathan, A and McCann, JA},
doi = {10.1109/JSAC.2017.2726718},
journal = {IEEE Journal on Selected Areas in Communications},
pages = {2667--2680},
title = {Non-orthogonal multiple access in large-scale heterogeneous networks},
url = {http://dx.doi.org/10.1109/JSAC.2017.2726718},
volume = {35},
year = {2017}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - In this paper, the potential benefits of applying non-orthogonal multiple access (NOMA) technique in K -tier hybrid heterogeneous networks (HetNets) is explored. A promising new transmission framework is proposed, in which NOMA is adopted in small cells and massive multiple-input multiple-output (MIMO) is employed in macro cells. For maximizing the biased average received power for mobile users, a NOMA and massive MIMO based user association scheme is developed. To evaluate the performance of the proposed framework, we first derive the analytical expressions for the coverage probability of NOMA enhanced small cells. We then examine the spectrum efficiency of the whole network by deriving exact analytical expressions for NOMA enhanced small cells and a tractable lower bound for massive MIMO enabled macro cells. Finally, we investigate the energy efficiency of the hybrid HetNets. Our results demonstrate that: 1) the coverage probability of NOMA enhanced small cells is affected to a large extent by the targeted transmit rates and power sharing coefficients of two NOMA users; 2) massive MIMO enabled macro cells are capable of significantly enhancing the spectrum efficiency by increasing the number of antennas; 3) the energy efficiency of the whole network can be greatly improved by densely deploying NOMA enhanced small cell base stations; and 4) the proposed NOMA enhanced HetNets transmission scheme has superior performance compared with the orthogonal multiple access-based HetNets.
AU  - Liu,Y
AU  - Qin,Z
AU  - Elkashlan,M
AU  - Nallanathan,A
AU  - McCann,JA
DO  - 10.1109/JSAC.2017.2726718
EP  - 2680
PY  - 2017///
SN  - 0733-8716
SP  - 2667
TI  - Non-orthogonal multiple access in large-scale heterogeneous networks
T2  - IEEE Journal on Selected Areas in Communications
UR  - http://dx.doi.org/10.1109/JSAC.2017.2726718
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000418435500002&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - http://hdl.handle.net/10044/1/59769
VL  - 35
ER  -
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