Browse > Article

Cost-effective Residual Frame Synchronization Error Removal Technique in TDD OFDM Systems  

Lee, Seong-Joo (Dept. of Information and Communication Eng. Sejong Univ.)
Kim, Kyung-Min (School of Electrical and Electronic Eng. Yonsei Univ.)
Kim, Jae-Seok (School of Electrical and Electronic Eng. Yonsei Univ.)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.44, no.2, 2007 , pp. 37-45 More about this Journal
Abstract
A lot of conventional algorithms has tried to cancel the Residual Frame Synchronization Error (RFSE), which causes the performance degradation of channel estimation when using interpolation in lattice-type pilot-aided Time Division Duplex (TDD) OFDM systems. Among them, a pre- and post-compensation method has been attractive to eliminate the effects of RFSE, providing good performance but requiring high computational complexity. In this paper we propose a new method which lowers computational costs by adjusting the starting point of TDD OFDM systems' FFT window in order to compensate for the RFSE. For the performance verification, we apply the proposed method to IEEE 802.16e standard and also estimate additionally required computational power of it compared to the pre- and post-compensation method. Simulation and implementation results show that the proposed algorithm has performance similar to the conventional method and is very efficient with low power implementation, requiring only 4.9 % of the power which the conventional method needs additionally.
Keywords
residual frame synchronization error; TDD OFDM; channel estimation; computational power;
Citations & Related Records
연도 인용수 순위
  • Reference
1 J. J. van de Beek, M. Sandell, M. Isaksson and P. O. Borjesson, 'Low complex frame synchronization in OFDM systems,' pp. 982-986, in Proc. IEEE International Conference Universal Personal Communications, Toronto, Canada, September 1995   DOI
2 F. Tufvesson and T. Maseng, 'Pilot assisted channel estimation for OFDM in mobile cellular systems,' pp. 1639-1643, in Proc. IEEE Vehicular Technology Conference, Phoenix, USA, May. 1997   DOI
3 J. J. Van De Be다., O. Edfords, M. Sandell, S. K. Wilson and P. O. Borjesson, 'On Channel Estimation in OFDM Systems,' pp.815-819, in Proc. of IEEE Vehicular Technology Conference, Chicago, USA, July 1995   DOI
4 Y. Zhao and A. Huang, 'A Novel Channel Estimation Method for OFDM Mobile Communication Systems based on Pilot Signals and Transform-domain Processing,' pp.2089-2093, in Proc. of IEEE Vehicular Technology Conference, Phoenix, USA, May 1997   DOI
5 O. Edfors, M. Sandell, J. J. Van De Beek, S. K. Wilson and P. O. Borjession, 'OFDM channel estimation by Singular Value Decomposition,' pp.923-927, in Proc. of IEEE Vehicular Technology Conference, Altlanta, USA, April 1996   DOI
6 J. Heiskala and J. Terry, 'OFDM Wireless LANS: A Theoretical and Practical Guide,' Sams Publishing, 2001
7 S. Coleri, M. Ergen, A. Puri and A. Bahai, 'A Study of Channel Estimation in OFDM Systems,' pp.894-898, in Proc. of IEEE Vehicular Technology Conference, Vancouver, Canada, September 2002   DOI
8 Marc Engles, 'Wireless OFDM Systems,' Kluwer Academic Publishers, 2002
9 M. H. Heish and C. H. Wei, 'Channel Estimation for OFDM System Based on Comb-type Pilot Arrangement in Frequency Selective Fading Channels,' IEEE Trans. on Consumer Electronics, Vol. 37, No. 12, pp.217-225, December 1998   DOI   ScienceOn
10 M. Speth, F. Classen and H. Meyr, 'Frame synchronization of OFDM systems in frequency selective fading channel,' pp. 1807-1811, in Proc. IEEE Vehicular Technology Conference, Phoenix, USA, May. 1997   DOI
11 'Guidelines for Evaluation of Radio Transmission Technique for IMT-2000,' ITU-R M.1225, 1997
12 'Air Interface for Fixed and Mobile Broadband Wireless Access Systems - Amendment for Physical and Medium Access Control Layers for Combined Fixed and Mobile Operation in Licensed Bands,' IEEE Std. 802.16e/D7, Apr. 2005
13 P. Hoeher, S. Kaiser and P. Robertaon, 'Two-dimensional pilot-symbol-aided channel estimation by Wiener filtering,' pp.1845-1848, in Proc. of IEEE international conference on Acoustics, Speech, and Signal Processing, Munich, Germany, April 1997   DOI
14 T. M. Schmidl, D. C. Cox, 'Low-Overhead, Low-Complexity Synchronization for OFDM,' pp.1301-1306, in Proc. of IEEE International Conference on Communications, Dallas, USA, June 1996   DOI