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计算机工程 ›› 2007, Vol. 33 ›› Issue (18): 122-124. doi: 10.3969/j.issn.1000-3428.2007.18.043

• 网络与通信 • 上一篇    下一篇

OFDM系统中同步子系统的硬件实现

(上海交通大学电子工程系,上海 200240)   

  1. (上海交通大学电子工程系,上海 200240)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2007-09-20 发布日期:2007-09-20

Hardware Implementation of Synchronization Subsystem in OFDM Systems

SUN Min-zhi, XU You-yun   

  1. (Department of Electronics Engineering, Shanghai Jiaotong Univ., Shanghai 200240 )
  • Received:1900-01-01 Revised:1900-01-01 Online:2007-09-20 Published:2007-09-20

摘要: 同步技术是正交频分复用(OFDM)系统中的关键技术。该文在研究OFDM系统同步算法的基础上,结合硬件架构的特点,给出了面向硬件平台的OFDM系统中同步子系统实现方案,阐述了关键算法模块在硬件实现时的主要修改。基于无线信道的实测数据分析表明,提出的OFDM系统中的同步子系统不仅有良好的性能,而且其结合系统硬件架构的模块化特点也便于相应算法进行扩展与移植。

关键词: 正交频分复用, 同步, DSP, FPGA

Abstract: Synchronization is a key technology of OFDM systems. This paper introduces synchronization algorithms in OFDM systems and proposes a hardware implementation scheme of synchronization subsystem according to parameters of hardware systems and the hardware architecture. It discusses some key modules in the hardware scheme. The measured data in wireless channel indicates that the proposed hardware implementation scheme of synchronization subsystem not only has a good performance but also can be easily expanded and ported because of the modularization feature of the hardware architecture.

Key words: OFDM, synchronization, DSP, FPGA

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