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OFDM系统中时频同步环路算法设计与实现 被引量：1

The Design and Implementation of Synchronization Loop in OFDM System
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摘要 为了克服正交频分复用(Orthogonal Frequency Division Multip lexing,OFDM)系统中时间和频率漂移,提出了一种基于pilot的定时跟踪算法。与基于循环前缀的频偏估计方法向结合,提出了一种适合工程实现的OFDM时频同步环路结构。环路完全利用数据符号中的冗余信息实现时偏和频偏的跟踪,降低了对OFDM同步符号的需求,提高了系统效率。在FPGA上实现了该同步环路,实测曲线证明该方法能够有效的补偿时偏和频偏。 To eliminate the effect of time and frequency drift,a timing tracking loop based on pilot for OFDM system is proposed.It combines frequency offset estimation based on cyclic prefix,and proposes architecture of time-frequency synchronization loop suitable for engineering implementation. The loop completely utilities redundant information in data symbol to track the timing and frequency and meet the requirement of OFDM synchronization symbols,which increases efficiency. Finally,the loop is developed on FPGA. Testing curve shows the method is effective.
作者 任宏
机构地区 中国人民解放军
出处 《无线电工程》 2013年第12期51-53,共3页 Radio Engineering
关键词 同步环路 OFDM FPGA synchronization loop OFDM FPGA
分类号 TN929.5 [电子电信—通信与信息系统]
  • 相关文献

参考文献10

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二级参考文献12

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共引文献7

同被引文献8

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  • 8陈兵,尹曼,刘力军.基于IEEE802.16e的OFDM定时同步算法及FPGA实现[J].无线电通信技术,2015,41(3):93-96. 被引量：1

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无线电工程
2013年 第12期

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