User selection and power allocation for guaranteed SIC detection in downlink beamforming Non-Orthogonal Multiple Access

Non-Orthogonal Multiple Access (NOMA) is a promising multiple access technique for the 5th generation (5G) mobile communication systems. In this paper, an efficient power allocation scheme is derived for multiuser multiple input single output (MISO) downlink beamforming NOMA system to guarantee that successive interference cancellation (SIC) detection can remove completely the intra-cluster interference. In addition, a fairness-oriented user selection (NOMA-FOUS) algorithm is proposed to maximize the NOMA system sum rate and achieve high system fairness by selecting the two clustered users based on their NOMA data rate. Numerical results show that NOMA-FOUS algorithm provides better system sum rate, weak users sum rate and fairness index performance than that of the other user clustering algorithms with a little increased computational complexity.

[1]  Geng Wu,et al.  5G Network Capacity: Key Elements and Technologies , 2014, IEEE Vehicular Technology Magazine.

[2]  Victor C. M. Leung,et al.  User Selection for Multiuser MIMO Downlink With Zero-Forcing Beamforming , 2012, IEEE Transactions on Vehicular Technology.

[3]  Andrea J. Goldsmith,et al.  On the optimality of multiantenna broadcast scheduling using zero-forcing beamforming , 2006, IEEE Journal on Selected Areas in Communications.

[4]  Carl D. Meyer,et al.  Matrix Analysis and Applied Linear Algebra , 2000 .

[5]  Ekram Hossain,et al.  Dynamic User Clustering and Power Allocation for Uplink and Downlink Non-Orthogonal Multiple Access (NOMA) Systems , 2016, IEEE Access.

[6]  Anass Benjebbour,et al.  Non-Orthogonal Multiple Access (NOMA) for Cellular Future Radio Access , 2013, 2013 IEEE 77th Vehicular Technology Conference (VTC Spring).

[7]  Muhammad Ali Imran,et al.  Uplink non-orthogonal multiple access for 5G wireless networks , 2014, 2014 11th International Symposium on Wireless Communications Systems (ISWCS).

[8]  Chungyong Lee,et al.  Non-orthogonal Multiple Access in a Downlink Multiuser Beamforming System , 2013, MILCOM 2013 - 2013 IEEE Military Communications Conference.

[9]  Huiling Jiang,et al.  Evolution of LTE and new Radio Access technologies for FRA (Future Radio Access) , 2014, 2014 48th Asilomar Conference on Signals, Systems and Computers.

[10]  Chao Zhang,et al.  User selection and power schedule for downlink non-orthogonal multiple access (NOMA) system , 2015, 2015 IEEE International Conference on Communication Workshop (ICCW).

[11]  Pingzhi Fan,et al.  On the Performance of Non-Orthogonal Multiple Access in 5G Systems with Randomly Deployed Users , 2014, IEEE Signal Processing Letters.