Downlink scheduling algorithms in OFDMA system

Computer Engineering and Applications ›› 2007, Vol. 43 ›› Issue (33): 124-126.

• 网络、通信与安全 • Previous Articles Next Articles

Downlink scheduling algorithms in OFDMA system

HE Chun-wei¹,LIU Fu-qiang¹,YANG Hua²,ZHANG Ji³

1.Broadband Wireless Communication and Multimedia Lab,Tongji University,Shanghai 200092,China
2.Communication Technique Lab of Intel Corporation,Shanghai 200336,China
3.Institute of Wireless Communication Technology,Shanghai Jiaotong University,Shanghai 200240,China

Received:1900-01-01 Revised:1900-01-01 Online:2007-11-21 Published:2007-11-21
Contact: HE Chun-wei

OFDMA系统的下行调度算法研究

贺春玮¹,刘富强¹,杨华²,张际³

1.同济大学宽带无线通信与多媒体实验室,上海 200092
2.Intel公司通信技术实验室,上海 200336
3.上海交通大学无线通信技术研究所,上海 200240

通讯作者: 贺春玮

Abstract

Abstract: In 1×3×1 OFDMA cellular system,in order to improve the overall system throughput,a modified algorithm is put forward.The algorithm is based on the discrepancy of SubChannels of each user.It aims to make each user transmit data on its good channel.The performance is analyzed and compared through simulation.The result shows that the algorithm can improve the system throughput on the basis of user fairness.

Key words: OFDMA, throughput, fairness

摘要：

在三扇区单频小区的正交频分多址（Orthogonal Frequency Division Multiple Access,简称OFDMA）蜂窝系统中,为了改善系统的吞吐量,提出了改进的调度算法。该算法基于用户在不同子信道的状态差异,尽量使用户在各自有利的信道上传输数据。通过计算机仿真,对其性能进行了分析和比较。结果表明,该算法可以在满足用户公平性的基础上,有效地提高系统的吞吐量。

关键词: 正交频分多址, 吞吐量, 公平性

HE Chun-wei¹,LIU Fu-qiang¹,YANG Hua²,ZHANG Ji³. Downlink scheduling algorithms in OFDMA system[J]. Computer Engineering and Applications, 2007, 43(33): 124-126.

贺春玮¹,刘富强¹,杨华²,张际³. OFDMA系统的下行调度算法研究[J]. 计算机工程与应用, 2007, 43(33): 124-126.

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Downlink scheduling algorithms in OFDMA system

OFDMA系统的下行调度算法研究

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