Robust Transmit Designs for Secrecy Rate Constrained MISO NOMA System

Su, Binbin and Ni, Qiang and He, Bingtao (2018) Robust Transmit Designs for Secrecy Rate Constrained MISO NOMA System. In: 29th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications. IEEE, ITA. ISBN 9781538660096

[img]
Preview
PDF (Robust Transmit Designs for Secrecy Rate Constrained MISO NOMA System)
Robust_Transmit_Designs_for_Secrecy_Rate_Constrained_MISO_NOMA_System.pdf - Accepted Version
Available under License Creative Commons Attribution-NonCommercial.

Download (100kB)

Abstract

This paper studies the secure transmission for downlink multiple-input single-output (MISO) non-orthogonal multiple access (NOMA) system in which imperfect channel state information (CSI) of the eavesdropper links is considered. We propose the novel robust beamforming strategies for the direct transmission NOMA (DT NOMA) and cooperative jamming NOMA (CJ NOMA) with a helper. We formulate our problem as the worst-case sum power minimization subject to secrecy rate constraint. The semidefinite relaxation (SDR) method is firstly applied to relax the quadratic terms and rank-one optimality is proved. Then an iterative algorithm based on successive convex approximation (SCA) is proposed to transform the nonconvex problem into convex approximations. Simulation results show that both the proposed NOMA schemes outperform the orthogonal multiple scheme, and CJ NOMA scheme can achieve much better system performance gain than DT NOMA scheme.

Item Type:
Contribution in Book/Report/Proceedings
Additional Information:
©2018 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
ID Code:
127691
Deposited By:
Deposited On:
08 Oct 2018 09:56
Refereed?:
Yes
Published?:
Published
Last Modified:
29 Sep 2020 06:27