Outage constraint based robust beamforming design for non-orthogonal multiple access in 5g cellular networks

TY - GEN

T1 - Outage constraint based robust beamforming design for non-orthogonal multiple access in 5g cellular networks

AU - Alavi, Faezeh

AU - Cumanan, Kanapathippillai

AU - Ding, Zhiguo

AU - Burr, Alister G.

N1 - Publisher Copyright: © 2017 IEEE.

PY - 2017/7/2

Y1 - 2017/7/2

N2 - Recently, non-orthogonal multiple access (NOMA) has received considerable attention as a promising candidate for 5G systems. In this paper, a robust beamforming approach is investigated for NOMA based multiple-input single-output (MISO) downlink transmission. We consider an outage probability based robust scheme by incorporating channel uncertainties, where the total transmit power is minimized while satisfying these outage constraints at each user. Although the original problem is non-convex in terms of beamforming vectors, an intractable optimization problem is reformulated with a linear matrix inequality (LMI) form by exploiting semidefinite relaxation (SDR) technique. Finally, simulation results have been provided to validate the performance of the proposed robust design, where these results confirm that the robust scheme outperforms the non-robust scheme in terms of the rate satisfaction ratio at each user.

AB - Recently, non-orthogonal multiple access (NOMA) has received considerable attention as a promising candidate for 5G systems. In this paper, a robust beamforming approach is investigated for NOMA based multiple-input single-output (MISO) downlink transmission. We consider an outage probability based robust scheme by incorporating channel uncertainties, where the total transmit power is minimized while satisfying these outage constraints at each user. Although the original problem is non-convex in terms of beamforming vectors, an intractable optimization problem is reformulated with a linear matrix inequality (LMI) form by exploiting semidefinite relaxation (SDR) technique. Finally, simulation results have been provided to validate the performance of the proposed robust design, where these results confirm that the robust scheme outperforms the non-robust scheme in terms of the rate satisfaction ratio at each user.

UR - http://www.scopus.com/inward/record.url?scp=85045239013&partnerID=8YFLogxK

U2 - 10.1109/PIMRC.2017.8292467

DO - 10.1109/PIMRC.2017.8292467

M3 - Conference contribution

AN - SCOPUS:85045239013

T3 - IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC

SP - 1

EP - 5

BT - 2017 IEEE International Symposium on Personal, Indoor and Mobile Radio Communications

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 28th Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2017

Y2 - 8 October 2017 through 13 October 2017

ER -