A novel joint user pairing and dynamic power allocation scheme in MIMO-NOMA system

In this paper, we examine a joint user pairing and dynamic power allocation (JUPDPA) design to maximize the energy efficiency (EE) in the multicell multiple-input multiple-output (MIMO) — non-orthogonal multiple access (NOMA) downlink system. A novel JUPDPA scheme is proposed based on median and the euclidean norm of the channel vectors. In addition, base station dynamically allocates the transmission power to the paired users. Comprehensive numerical results illustrate that the proposed scheme attains higher energy efficiency as compared with the existing NOMA schemes and the conventional orthogonal multiple access (OMA) scheme.

[1]  Anass Benjebbour,et al.  System-level performance of downlink NOMA for future LTE enhancements , 2013, 2013 IEEE Globecom Workshops (GC Wkshps).

[2]  A. Lozano,et al.  What Will 5 G Be ? , 2014 .

[3]  David Tse,et al.  Fundamentals of Wireless Communication , 2005 .

[4]  Zhengang Pan,et al.  Toward green and soft: a 5G perspective , 2014, IEEE Communications Magazine.

[5]  Daniel K. C. So,et al.  User-Pairing Based Non-Orthogonal Multiple Access (NOMA) System , 2016, 2016 IEEE 83rd Vehicular Technology Conference (VTC Spring).

[6]  Marina Petrova,et al.  Proportional fairness-based user pairing and power allocation for non-orthogonal multiple access , 2015, 2015 IEEE 26th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC).

[7]  Jeffrey G. Andrews,et al.  What Will 5G Be? , 2014, IEEE Journal on Selected Areas in Communications.