Multi-Cell Coordinated Scheduling and Power Allocation in Downlink LTE-A Systems

Author

Jian Yu ; Li, Geoffrey Ye ; Changchuan Yin ; Suwen Tang ; Xiaolong Zhu

Author_Institution

Beijing Key Lab. of Network Syst. Archit. & Convergence, Beijing Univ. of Posts & Telecommun., Beijing, China

fYear

2014

fDate

14-17 Sept. 2014

Firstpage

1

Lastpage

5

Abstract

In this paper, we investigate multi-cell coordinated scheduling and power allocation in downlink long term evolution advanced (LTE-A) systems, where orthogonal frequency division multiple-access (OFDMA) is used. The proposed scheme performs joint scheduling, power allocation, and modulation and coding scheme (MCS) selection to maximize the overall weighted throughput with proportional fairness. Our scheme considers the practical constraints in LTE-A systems. Since the optimization problem is a combinatorial and non- convex one and is with high complexity, low- complexity and suboptimal algorithms are proposed, which separate the scheduling and power allocation into two subproblems. Simulation results show that the proposed scheme can improve the average system throughput by 10% and the 10th percentile throughput by 15% compared with the existing scheme.

Keywords

Long Term Evolution; OFDM modulation; encoding; frequency division multiple access; optimisation; resource allocation; scheduling; OFDMA; coding scheme; downlink LTE-A systems; downlink long term evolution advanced; modulation scheme; multicell coordinated scheduling; optimization problem; orthogonal frequency division multiple access; power allocation; proportional fairness; Indexes; Interference; Optimization; Resource management; Scheduling; Signal to noise ratio; Throughput;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference (VTC Fall), 2014 IEEE 80th

Conference_Location

Vancouver, BC

Type

conf

DOI

10.1109/VTCFall.2014.6966061

Filename

6966061