Performance of MIMO-NOMA Downlink Transmissions

In this paper, a non-orthogonal multiple access (NOMA) downlink scenario is considered, in which all nodes are equipped with multiple antennas. A new design of precoding and detection matrices for multiple-input-multiple-output (MIMO) downlink transmissions is proposed and its performance is analyzed by using the criteria of outage probabilities and diversity orders. To further enlarge the performance gap between MIMO-NOMA and conventional orthogonal multiple access schemes, user pairing is applied to NOMA and its impact on the system performance is characterized. Finally computer simulation results are provided to facilitate the performance evaluation of MIMO- NOMA and also demonstrate the accuracy of the developed analytical results.

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

[2]  Reinaldo A. Valenzuela,et al.  V-BLAST: an architecture for realizing very high data rates over the rich-scattering wireless channel , 1998, 1998 URSI International Symposium on Signals, Systems, and Electronics. Conference Proceedings (Cat. No.98EX167).

[3]  Jinho Choi,et al.  Non-Orthogonal Multiple Access in Downlink Coordinated Two-Point Systems , 2014, IEEE Communications Letters.

[4]  Ioannis Krikidis,et al.  Fairness for Non-Orthogonal Multiple Access in 5G Systems , 2015, IEEE Signal Processing Letters.

[5]  Huiling Jiang,et al.  Considerations on downlink non-orthogonal multiple access (NOMA) combined with closed-loop SU-MIMO , 2014, 2014 8th International Conference on Signal Processing and Communication Systems (ICSPCS).

[6]  Fumiyuki Adachi,et al.  The Application of MIMO to Non-Orthogonal Multiple Access , 2015, IEEE Transactions on Wireless Communications.

[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]  Thomas M. Cover,et al.  Elements of Information Theory , 2005 .

[10]  Huiling Jiang,et al.  Impact of rank optimization on downlink non-orthogonal multiple access (NOMA) with SU-MIMO , 2014, 2014 IEEE International Conference on Communication Systems.

[11]  Paul A. Wilford,et al.  A hierarchical modulation for upgrading digital broadcast systems , 2005, IEEE Transactions on Broadcasting.

[12]  Pingzhi Fan,et al.  Impact of User Pairing on 5G Non-Orthogonal Multiple Access , 2014, ArXiv.