Wang Guofu, Gao Feng, Yang Xinhong, et al. Multi-target detecting and positioning approach of mobile robot based on ultrasonic sensors[J]. Journal of Beijing University of Aeronautics and Astronautics, 2011, 37(12): 1519-1523. (in Chinese)
Citation: Zhang Shuai, Zhang Xiaolin. Rapid large frequency offset estimation for DTMB system[J]. Journal of Beijing University of Aeronautics and Astronautics, 2013, 39(2): 225-229. (in Chinese)

Rapid large frequency offset estimation for DTMB system

  • Received Date: 06 Jan 2012
  • Publish Date: 28 Feb 2013
  • A frequency synchronization algorithm for digital terreslrial television multimedia broadcasting (DTMB) system with a large frequency offset was developed. The estimated frequency offset was obtained by differential correlation between received pseudo noise (PN) sequence and local PN sequence based on the m sequence cyclic shift-and-add property. Best linear unbiased estimator was used to enlarge the estimation range and maintain the estimation accuracy. This scheme could finish carrier frequency acquisition even with large frequency offset in a short time, and provide the necessary conditions for frequency offset tracking. Simulation results under AWGN and multipath channels show that the proposed scheme enlarges the frequency estimation range by H times with the same accuracy compared with the traditional differential correlation algorithm used for frequency synchronization in DTMB system.

     

  • [1] GB20600-2006数字电视地面广播传输系统帧结构、信道编码和调制[S] GB20600-2006 Frame structure,channel coding and modulation for digital television terrestrial broadcasting system[S](in Chinese) [2] Schmidl T M,Cox D C.Robust frequency and timing synchronization for OFDM [J].IEEE Trans Commun,1997,45(12):1613-1621 [3] Morelli M,Mengali U.An improved frequency offset estimator for OFDM application [J].IEEE Commun Letter,1999, 3(3): 75-77 [4] 张超,张晓林,张帅.地面数字电视系统中载波同步方法[J]北京航空航天大学学报,2008,34(9):1024-1027 Zhang Chao,Zhang Xiaolin,Zhang Shuai.Carrier synchronization method for digital terrestrial television system [J].Journal of Beijing University of Aeronautics and Astronautics,2008, 34(9): 1024-1027(in Chinese) [5] Wu Jianming,Chen Yun,ZengXiaoyang,et al.Robust timing and frequency synchronization scheme for DTMB system [J].IEEE Trans Consumer Electronics,2007,53(4):1348-1352 [6] He Lifeng,Yang Fang,Zhang Chao,et al.Synchronization for TDS-OFDM over multipath fading channels [J].IEEE Trans Consumer Electronics,2010,56(4):2141-2147 [7] Liu Guanghui,Zhidkov S V.A composite PN-correlation based synchronizer for TDS-OFDM receiver [J].IEEE Trans Broadcast,2010,56(1):77-85 [8] Moose P H.A technique for orthogonal frequency division multiplexing frequency offset correction [J].IEEE Trans Comm,1994,42(10):2908-2914
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索

    Article Metrics

    Article views(1681) PDF downloads(745) Cited by()
    Proportional views
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return