Blind Estimation of Symbol Timing and Carrier Frequency Offset in LOFDM Systems

Jian Wei; Shen Yue-hong

doi:10.3724/SP.J.1146.2005.01092

Volume 29 Issue 6

Jan. 2011

Turn off MathJax

Article Contents

Article Navigation > Journal of Electronics & Information Technology > 2007 > 29(6): 1514-1517

Jian Wei, Shen Yue-hong. Blind Estimation of Symbol Timing and Carrier Frequency Offset in LOFDM Systems[J]. Journal of Electronics & Information Technology, 2007, 29(6): 1514-1517. doi: 10.3724/SP.J.1146.2005.01092

Citation:

Jian Wei, Shen Yue-hong. Blind Estimation of Symbol Timing and Carrier Frequency Offset in LOFDM Systems[J]. Journal of Electronics & Information Technology, 2007, 29(6): 1514-1517. doi: 10.3724/SP.J.1146.2005.01092

Citation:

PDF( 297 KB)

Blind Estimation of Symbol Timing and Carrier Frequency Offset in LOFDM Systems

doi: 10.3724/SP.J.1146.2005.01092

Received Date: 2005-08-31
Rev Recd Date: 2006-03-02
Publish Date: 2007-06-19

Abstract

Abstract

Blind synchronization algorithm is developed for estimating jointly timing and carrier frequency offset of Lattice Orthogonal Frequency Division Multiplexing (LOFDM) systems, which is based on the cyclostationarity of LOFDM signals. The theoretical analysis shows that the following characters are occupied by the proposed algorithm. The proposed estimators can effectively combat the fading caused by the frequency selective slowly time-varying channels. In the case of wide-sense stationary noise, the performance of the estimators is independent of Signal-to-Noise Ratio (SNR) received, and then they operate well in low SNR. Moreover, the performance of the symbol timing estimator and that of carrier frequency offset estimator do not influence each other. Finally, simulation results demonstrate the performance of the presented estimators.

FullText(HTML)

References(1)

References

Strohmer T and Beaver S. Optimal OFDM system design through optimal sphere coverings[A]. IEEE Proc. Int. Conf. Acoustic, Speech, and Signal Processing [C], Salt Lake city, USA, 2001, 4: 2373-2376.[2]Strohmer T and Beaver S. Optimal OFDM design for time- frequency dispersive channels[J].IEEE Trans. on Commun.2003, 51(7):1111-1122[3]Blcskei H. Blind estimation of symbol timing and carrier frequency offset in wireless OFDM systems[J].IEEE Trans. on Commun.2001, 49(6):988-999[4]Park B, Ko E, Cheon H, and Kang C, et al..A blind OFDM synchronization algorithm based on cyclic correlation[A]. 2001 Global Telecommunications Conference[C], San, Antonio, Texas, USA, 2001, vol.5: 3116-3119.[5]王宏禹. 非平稳随机信号分析与处理[M]. 北京：国防工业出版社，1999, 第9章.[6]胡广书. 数字信号处理算法、理论与应用[M]. 北京：清华大学出版社，1997, 第2章.[7]简伟，沈越泓，李毅. 基于广义Gabor变换的最优LOFDM系统的脉冲成形[J].电子与信息学报.2006, 28(7):1274-1278浏览[8]Proakis J G. 数字通信[M]. 北京：电子工业出版社，2001: 第14章.[9]Zheng Y R and Xiao C S. Simulation models with correct statistical properties for rayleigh fading channels[J].IEEE Trans. on Commun.2003,51(6):920-928

Relative Articles

Supplements(0)

Cited By

Proportional views