A subcarrier and power allocation algorithm for OFDMA full-duplex systems

Author

Cirik, Ali Cagatay ; Rikkinen, Kari ; Yue Rong ; Ratnarajah, Tharmalingam

Author_Institution

Centre for Wireless Commun., Univ. of Oulu, Oulu, Finland

fYear

2015

Firstpage

11

Lastpage

15

Abstract

In this paper, we focus on subcarrier and power allocation for an orthogonal frequency division multiple access (OFDMA) full-duplex (FD) system. A three-step algorithm is proposed to maximize the sum-rate of the system subject to individual rate constraints at the uplink and downlink users, and transmit power constraints at the base station (BS) and uplink users. The steps are: 1) Subcarrier allocation that considers user target rate requirements, 2) residual subcarrier allocation that further increases the sum rate, and 3) power allocation based on iterative water-filling (IWF). Simulation results reveal that the proposed FD scheduling improves the sum-rate over the traditional half-duplex (HD) and round-robin (RR) scheduling significantly under the self-interference cancellation levels that has been recently achieved.

Keywords

OFDM modulation; frequency division multiple access; iterative methods; resource allocation; telecommunication scheduling; FD scheduling; IWF; OFDMA FD system; base station; downlink users; individual rate constraints; iterative water-filling; orthogonal frequency division multiple access full-duplex system; power allocation; residual subcarrier allocation; self-interference cancellation levels; transmit power constraints; uplink users; user target rate requirements; Downlink; Europe; High definition video; Quality of service; Resource management; Silicon; Uplink; Full-duplex; OFDMA; QoS; resource allocation; subcarrier and power allocation;

fLanguage

English

Publisher

ieee

Conference_Titel

Networks and Communications (EuCNC), 2015 European Conference on

Conference_Location

Paris

Type

conf

DOI

10.1109/EuCNC.2015.7194031

Filename

7194031