A difference of absolute value based timing metric for timing synchronization in OFDM system

 
 
 
  • Abstract
  • Keywords
  • References
  • PDF
  • Abstract


    Traditional time synchronization schemes are based on autocorrelation between identical parts of the reference OFDM symbol. However, the time metric of the traditional schemes have a plateau or significant quantity of side lobe. This results in a poor timing synchronization performance. In this paper we are proposing a modified timing metric based on difference of absolute value as a normalized factor. The timing synchronization based on the modified timing metric reduces side lobe and improves the timing synchronization performance.

     

     


  • Keywords


    OFDM; Timing Metric; Symbol Timing Synchronization; Differential Absolute Value.

  • References


      [1] L. J. Cimini , Jr., “Analysis and simulation of a digital mobile channel using orthogonal frequency division multiplexing,” IEEE Trans. Commun., Jul. 1985, vol. COM-33, no. 7, pp. 665–675

      [2] S. Weinstein and P. Ebert, “Data transmission by frequency-division multiplexing using the discrete Fourier transform,” IEEE Trans. Commun.Technol.Oct. 1971, vol. COM-19, no. 5, pp. 628–634.

      [3] Thomas keller and lajoshanzo,” adaptive multicarrier modulation: a convenient Framework for time-frequency processing in Wireless communications”, IEEE proceedings of the IEEE, May 2000, vol. 88, no. 5.

      [4] M. Speth, S. Fechtel, G. Fock, and H. Meyr. Optimum Receiver Design for Wireless Broadband Systems Using OFDM - Part I. IEEE Trans. On Comm., November 1999, 47(11):1668–1677.

      [5] HamedAbdzadeh-Ziabari and Mahrokh G. Shayesteh.” Robust Timing and Frequency Synchronization for OFDM Systems,” IEEE Transactions on vehicular technology, October 2011, vol. 60, no. 8.

      [6] T. M. Schmidl and D. C. Cox, “Robust frequency and timing synchronization for OFDM,” IEEE Trans. Commun., Dec. 1997 vol. 45, pp. 1613–1621.

      [7] H. Minn, M. Zeng, and V. K. Bhargava, “On timing offset estimation for OFDM systems,” IEEE Commun. Lett., July 2000, vol. 4, pp. 242–244.

      [8] B. Park, H. Cheon, C. Kang, and D. Hong, “A novel timing estimation method for OFDM systems,” IEEE Commun. Lett., May 2003, vol. 7, pp. 239–241.

      [9] Guangliang Ren, Y chang, Hui Zhang, and H Zhang,’Synchronization Method Based on a New Constant Envelope Preamble for OFDM System,” vol. 51, no.1, pp. 139-143, March 2005.

      [10] Y. Kang, S. Kim, D. Ahn, H. Lee, "Timing estimation for OFDM systems by using a correlation sequence of preamble", IEEE Trans. Consumer Electronics, vol. 54, no. 4, pp. 1600-1608, Nov. 2008.

      [11] B. Sheng, J. Zheng, X. You, L. Chen, “A Novel Timing Synchronization Method for OFDM Systems”, IEEE Communications Letters,Vol. 14, NO. 12, December 2010.

      [12] H.A.Ziabari, M . G. Shayesteh, M . Manaffar, “An Improved Timing Estimation Method For OFDM Systems” , IEEE Trans. Consumer Electronics, vol. 56, No. 4, Nov. 2010.

      [13] H.A.Ziabari, M. G. Shayesteh, M. Manaffar, “A Novel Preamble-Based Frame Timing Estimator for OFDM Systems”, IEEE Communications Letters,Vol. 16, NO. 7, JULY- 2012.

      [14] B. Sahu, Saswat Chakrabarti, S. L. Maskara, “A New Timing Synchronization Metric for OFDM Based WLAN Systems”, Springer Wireless Personal Commun. (2010) 52:829–8.


 

View

Download

Article ID: 15544
 
DOI: 10.14419/ijet.v7i2.33.15544




Copyright © 2012-2015 Science Publishing Corporation Inc. All rights reserved.