Fair subcarrier-power allocation scheme for multiuser multicarrier systems

作     者：Mohammed Abd-Elnaby Germien G.Sedhom Nagy W.Messiha Xu Zhu Fathi E.Abd El-Samie 

作者机构：Faculty of Electronic Engineering Menoufia University Deptartment of Electrical Engineering and Electronics University of Liverpool 

出 版 物：《Journal of Central South University》 (中南大学学报（英文版）)

年 卷 期：2015年第22卷第8期

页      面：3033-3041页

核心收录：

学科分类：080904[工学-电磁场与微波技术] 0810[工学-信息与通信工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080402[工学-测试计量技术及仪器] 0804[工学-仪器科学与技术] 081001[工学-通信与信息系统] 

主　　题：multiuser orthogonal frequency division multiple access (MU-OFDM) subcarrier-allocation power allocation fairness capacity 

摘      要：The main objective of multiuser orthogonal frequency division multiple access(MU-OFDM) is to maximize the total system capacity in wireless communication systems. Thus, the problem in MU-OFDM system is the adaptive allocation of the resources(subcarriers, bits and power) to different users subject to several restrictions to maximize the total system capacity. In this work, a proposed subcarrier allocation algorithm was presented to assign the subcarriers with highest channel gain to the users. After the subcarrier allocation, subcarrier gain-based power allocation(SGPA) was employed for power and bit loading. The simulation results show that the proposed subcarrier-power allocation scheme can achieve high total system capacity and good fairness in allocating the resources to the users with slightly high computational complexity compared to the existing subcarrier allocation algorithms.