TY - GEN
T1 - Joint Precoding Optimization for Secure Transmission in Downlink MISO-NOMA Networks
AU - Lit, Dongdong
AU - Zhao, Nan
AU - Chen, Yunfei
AU - Nallanathan, Arumugam
AU - Ding, Zhiguo
AU - Alouini, Mohamed-Slim
N1 - KAUST Repository Item: Exported on 2020-10-01
PY - 2019/11/25
Y1 - 2019/11/25
N2 - Non-orthogonal multiple access (NOMA) is a prospective technology for radio resource constrained future mobile networks. However, NOMA users far from base station (BS) tend to be more susceptible to eavesdropping because they are allocated more transmit power. In this paper, we aim to jointly optimize the precoding vectors at BS to ensure the legitimate security in a downlink multiple-input single-output (MISO) NOMA network. In the proposed scheme, we can maximize the sum secrecy rate by joint precoding optimization. Owing to its non-convexity, the problem is converted into a convex one, which is solved by a second-order cone programming based iterative algorithm. Simulation results are presented to demonstrate that the proposed schemes can improve the security performance for MISO NOMA systems effectively.
AB - Non-orthogonal multiple access (NOMA) is a prospective technology for radio resource constrained future mobile networks. However, NOMA users far from base station (BS) tend to be more susceptible to eavesdropping because they are allocated more transmit power. In this paper, we aim to jointly optimize the precoding vectors at BS to ensure the legitimate security in a downlink multiple-input single-output (MISO) NOMA network. In the proposed scheme, we can maximize the sum secrecy rate by joint precoding optimization. Owing to its non-convexity, the problem is converted into a convex one, which is solved by a second-order cone programming based iterative algorithm. Simulation results are presented to demonstrate that the proposed schemes can improve the security performance for MISO NOMA systems effectively.
UR - http://hdl.handle.net/10754/660634
UR - https://ieeexplore.ieee.org/document/8904317/
UR - http://www.scopus.com/inward/record.url?scp=85075895405&partnerID=8YFLogxK
U2 - 10.1109/PIMRC.2019.8904317
DO - 10.1109/PIMRC.2019.8904317
M3 - Conference contribution
SN - 9781538681107
BT - 2019 IEEE 30th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)
PB - IEEE
ER -