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特高频/甚高频频段OFDM系统同步技术的算法改进及仿真 被引量：1

Algorithm Improvement and Simulation of Synchronization Technology of OFDM System Within VHF/UHF Frequency Band
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摘要 本文研究了一个以OFDM技术为核心,大幅提高VHF/UHF频段频带利用率的无线数据通信系统,并对该系统的关键技术——同步进行了较为详细的讨论,包括帧同步、符号同步及小数倍频偏、整数倍频偏同步.与已有文献记载的同步方案相比,该系统不但具有较小的运算量、较低的实现复杂度,而且具有较好的性能. This paper studies a wireless data communication system based on OFDM technology which could greatly increase the frequency efficiency of VHF/UHF frequency band. The paper gives a detailed discussion to the synchronization which is the key technology of the system,including frame synchronization, symbol synchronization, fraction frequency offset and integral frequency offset synchronization. Compared with the known solutions of synchronization, this system needs less calculation and lower realization complexity but also has a good performance.
作者 吴虹 梁裕民 戈立军 刘军 袁佳杰 周志江 谭卫毅 张莉
机构地区 南开大学信息技术科学学院
出处 《电子学报》 EI CAS CSCD 北大核心 2007年第12期2384-2388,共5页 Acta Electronica Sinica
基金 天津市自然科学基金(No.06YFJMJC00600) 天津市应用基础及前沿技术研究计划重点项目(No.07JCZDJC5700)
关键词 同步 算法改进 VHF/UHF频段 高频带利用率 synchronization algorithm improvement VHF/UHF frequency band,high frequency efficiency
分类号 TN914.4 [电子电信—通信与信息系统]
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参考文献6

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  • 2Mueller Weinfurtner, Stefan H. On the optimality of metrics for coarse frame synchronization in OFDM: a comparison [ A ]. IEEE International Symposium on Personal, Indoor and Mobile Radio Commtmications[C]. 1998,2: 533 - 537.
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同被引文献10

  • 1秦升平,尹长川,郝建军,纪红,乐光新.一种新的OFDM系统载波频率偏移估计和跟踪方案[J].电子与信息学报,2004,26(10):1569-1574. 被引量：7
  • 2吴虹,袁佳杰,刘军,梁裕民,张冀,丁勇.一种低复杂度的无导频OFDM系统载波频率偏移的同步方法[J].电子学报,2007,35(7):1357-1359. 被引量：6
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  • 6Xiaodong L, Ritcey J A. Maximurn-likehood estimation of OFDM carrier frequency offset for fading channels[ A ]. Proceedings of 31st Asilomar Conf Signals,Systems and Computers [ C]. Los Alamitos, CA, USA: IEEE Comp Soc, 1997.57 -61.
  • 7Wang L, Cao Y. Sub-optimum PTS for PAPR reduction of OFDM signals [ J ]. Electronics Letters, 2008,44 ( 15 ) : 921 - 922.
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  • 9Zhao Y,Haggman S G. Sensitivity to Doppler shift and carrier frequency errors in OFDM systems-The consequences and solutions[ A ]. In Proc. IEEE 46th Vehicular Technology Conf. [C] .Atlanta, GA,Apr.28 - May 1,1996:1564 - 1568.
  • 10Van de Beek J J, Sandell M, Borjesson P O. ML estimation of time and frequency offset in OFDM systems[ J]. IEEE Trans on Signal Processing, 1997,45(7) : 1800 - 1805.

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电子学报
2007年 第12期

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