Performance Evaluation of Non-Orthogonal Multiple Access Combined with Opportunistic Beamforming

Non-orthogonal multiple access (NOMA) utilizing power domain and advanced receiver is a promising technique for future radio access. Multi-antenna techniques have been deeply studied during the past decade to boost system performance by virtue of spatial multiplexing and/or spatial diversity. It is of great interest to study how to efficiently and effectively combine the two techniques together for further system performance improvement. This paper investigates on the combination of NOMA with opportunistic beamforming (OBF), which has been proposed as a practical multi-antenna transmission scheme with good performance and very limited feedback. The key design issues of NOMA with OBF are investigated including precoding, transmission power assignment, user feedback and scheduling. Furthermore, a method to improve the system performance with OBF is proposed by utilizing historical information. The performance of NOMA with OBF is investigated by system-level simulations with very practical assumptions and parameters in order to provide insights into the suitability of combining OBF with NOMA for future radio access. Simulation results show the proposed method is effective and NOMA with OBF is a promising scheme for future wireless communication systems.

[1]  Higuchi Kenichi,et al.  Investigations on Power Allocation Among Beams in Non-orthogonal Access with Random Beamforming and Intra-beam SIC for Cellular MIMO Downlink , 2012 .

[2]  Yoshihisa Kishiyama,et al.  Non-Orthogonal Access with Random Beamforming and Intra-Beam SIC for Cellular MIMO Downlink , 2013, 2013 IEEE 78th Vehicular Technology Conference (VTC Fall).

[3]  Yoshihisa Kishiyama,et al.  Performance of non-orthogonal access with SIC in cellular downlink using proportional fair-based resource allocation , 2012, 2012 International Symposium on Wireless Communication Systems (ISWCS).

[4]  Yuan Yan,et al.  Superimposed radio resource sharing for improving uplink spectrum efficiency , 2008, 2008 14th Asia-Pacific Conference on Communications.

[5]  Anass Benjebbour,et al.  System-level performance evaluation of downlink non-orthogonal multiple access (NOMA) , 2013, 2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC).

[6]  Luis M. Correia,et al.  International Symposium on Wireless Communication Systems (ISWCS) , 2008, ISWCS 2008.

[7]  David Tse,et al.  Opportunistic beamforming using dumb antennas , 2002, IEEE Trans. Inf. Theory.

[8]  Babak Hassibi,et al.  On the capacity of MIMO broadcast channels with partial side information , 2005, IEEE Transactions on Information Theory.

[9]  Joerg Schaepperle,et al.  Enhancement of throughput and fairness in 4G wireless access systems by non-orthogonal signaling , 2009, Bell Labs Technical Journal.

[10]  Joerg Schaepperle,et al.  Throughput of a wireless cell using superposition based multiple-access with optimized scheduling , 2010, 21st Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications.

[11]  Hidetoshi Kayama,et al.  A Novel Low Computational Complexity Power Assignment Method for Non-orthogonal Multiple Access Systems , 2014, IEICE Trans. Fundam. Electron. Commun. Comput. Sci..

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

[13]  Anass Benjebbour,et al.  Concept and practical considerations of non-orthogonal multiple access (NOMA) for future radio access , 2013, 2013 International Symposium on Intelligent Signal Processing and Communication Systems.

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