A Novel Adaptive Resource Allocation Scheme in Downlink OFDMA-Based System

被引：5
|
作者：
Sen, Cai [1 ]
Hong, Ji [1 ]
Xi, Li [1 ]
机构：
[1] Beijing Univ Posts & Telecommun, Minist Educ, Key Lab Universal Wireless Commun, Beijing 100088, Peoples R China
来源：
2009 5TH INTERNATIONAL CONFERENCE ON WIRELESS COMMUNICATIONS, NETWORKING AND MOBILE COMPUTING, VOLS 1-8 | 2009年
关键词：
orthogonal frequency division multiple access; resource unit; scheduling algorithm; throughput; fairness;
D O I：
10.1109/EPEC.2009.5420378
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Orthogonal Frequency Division Multiple Access (OFDMA) has been selected as multiple access technology by future wireless communication systems, such as Long Term Evolution (LTE), International Mobile Telecommunications-Advanced (IMT-Advanced), etc.. Resource allocation is a crucial issue in OFDMA-based system. The existing algorithms are mainly concentrated on two basic modes, "adjacent" mode and, "distributed" mode, to build a Resource Unit (RU) composed of a set of subcarriers. In this paper, we propose a novel adaptive resource allocation scheme to realize flexible and efficient subcarriers distribution. A novel mode of building a RU in OFDMA-based system is introduced. The adaptive time-frequency scheduling algorithm based on the novel mode is explained in details. Simulation results show that the proposed scheme could achieve a better balance of fairness and throughput compared to the conventional resource allocation schemes based on "adjacent" mode and "distributed" mode.
引用
收藏
页码：1 / 4
页数：4
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