计算机工程与应用 ›› 2007, Vol. 43 ›› Issue (25): 147-149.

• 网络、通信与安全 • 上一篇    下一篇

基于正交频分复用的自适应载波调控策略

迟文升1,李红艳2,方 磊1   

  1. 1.西安电子科技大学 机电工程学院,西安 710071
    2.西安电子科技大学 通信工程学院,西安 710071
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2007-09-01 发布日期:2007-09-01
  • 通讯作者: 迟文升

Adaptive carrier allocation strategy based on orthogonal frequency division multiplexing

CHI Wen-sheng1,LI Hong-yan2,FANG Lei1   

  1. 1.College of Electromechanical Engineering,Xidian University,Xi’an 710071,China
    2.College of Communication Engineering,Xidian University,Xi’an 710071,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2007-09-01 Published:2007-09-01
  • Contact: CHI Wen-sheng

摘要: 针对现今众多无线宽带传输方案采用OFDM技术的现状,在分析FLASH-OFDM及其改进技术Flexband的基础上,提出了多频蜂窝网的自适应载波调控策略。在单个蜂窝中采用了3个载波,其覆盖范围分为远、中、近三个等级;用户根据自适应载波调控策略选择信号质量好的信道。仿真结果表明,该方案能够获得更高的网络吞吐率及频谱利用率,并能支持更多的用户,提高了系统容量。

关键词: 正交频分复用(OFDM), 多频蜂窝网(MFCN), 吞吐率

Abstract: In view of OFDM widely being used in the mobile broadband network,adaptive carrier allocation strategy of multi-frequency cellular network has been brought forward,based on analyzing the theory of FLASH-OFDM and Flexband.Three bands,which are divided into three grades of long,medium,and nearly,are installed in a cell.Users choose good quality signal tone according to adaptive carrier allocation strategy.Simulation results show that in the proposed system,both of network throughput and spectrum efficiency are improved,more users can communicate,while system capacity is increased.

Key words: Orthogonal Frequency Division Multiplexing(OFDM), Multi-Frequency Cellular Network(MFCN), throuthput