计算机工程与应用 ›› 2007, Vol. 43 ›› Issue (33): 124-126.

• 网络、通信与安全 • 上一篇    下一篇

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. 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
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2007-11-21 发布日期:2007-11-21
  • 通讯作者: 贺春玮

Downlink scheduling algorithms in OFDMA system

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

  1. 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

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

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