The application of non-orthogonal multiple access in wireless powered communication networks

Yuan, Yi and Ding, Zhiguo (2016) The application of non-orthogonal multiple access in wireless powered communication networks. In: 2016 IEEE 17th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC). IEEE. ISBN 9781509017508

[img]
Preview
PDF (1570254612)
1570254612.pdf - Accepted Version
Available under License Creative Commons Attribution-NonCommercial.

Download (270kB)

Abstract

This work investigates the application of non-orthogonal multiple access (NOMA) scheme for the uplink of wireless powered communication networks (WPCN). We maximize the sum rate by jointly designing of the time allocation, the downlink energy beamforming and receiver beamforming. To solve this nonconvex problem, a method of two stages optimization is proposed. In the first stage, we apply the series approximations to obtain the optimal energy beamforming and receive beamforming with fixed time allocation. In the second stage, one-dimensional search is considered to obtain the optimal time allocation. For the approximation part, successive convex approximation (SCA) method is used to convert a mixed integer non-linear program into its convex approximation problem. The numerical results illustrate that the proposed algorithm converges to the local optimum solution and the proposed scheme outperforms the fixed time allocation scheme and orthogonal multiple access (OMA).

Item Type:
Contribution in Book/Report/Proceedings
Additional Information:
©2016 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:
85890
Deposited By:
Deposited On:
22 May 2017 12:08
Refereed?:
Yes
Published?:
Published
Last Modified:
28 Oct 2020 08:48