Skip to main content

On the Spectral Efficiency and Security Enhancements of NOMA Assisted Multicast-Unicast Streaming

Author(s): Ding, Zhiguo; Zhao, Zhongyuan; Peng, Mugen; Poor, H Vincent

To refer to this page use:
Abstract: This paper considers the application of non-orthogonal multiple access (NOMA) to a multi-user network with mixed multicasting and unicasting traffic. The proposed design of beamforming and power allocation ensures that the unicasting performance is improved while maintaining the reception reliability of multicasting. Both analytical and simulation results are provided to demonstrate that the use of the NOMA assisted multicast-unicast scheme yields a significant improvement in spectral efficiency compared with orthogonal multiple access (OMA) schemes which realize multicasting and unicasting services separately. Since unicast messages are broadcast to all the users, how the use of NOMA can prevent those multicast receivers intercepting the unicasting messages is also investigated, where it is shown that the secrecy unicasting rate achieved by NOMA is always larger than or equal to that of OMA. Simulation results are provided to verify the developed analytical results and demonstrate the superior performance of the proposed NOMA scheme.
Publication Date: 24-Apr-2017
Citation: Ding, Zhiguo, Zhao, Zhongyuan, Peng, Mugen, Poor, H Vincent. (2017). On the Spectral Efficiency and Security Enhancements of NOMA Assisted Multicast-Unicast Streaming. IEEE Transactions on Communications, 65 (7), 3151 - 3163. doi:10.1109/tcomm.2017.2696527
DOI: doi:10.1109/tcomm.2017.2696527
ISSN: 0090-6778
Pages: 3151 - 3163
Type of Material: Journal Article
Journal/Proceeding Title: IEEE Transactions on Communications
Version: Author's manuscript

Items in OAR@Princeton are protected by copyright, with all rights reserved, unless otherwise indicated.