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Volume 28 Issue 7
Jan.  2011
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Jian Wei, Shen Yue-hong, Li Yi. Pulse-Shaping Based on Generalized Gabor Transform for Optimal LOFDM System[J]. Journal of Electronics & Information Technology, 2006, 28(7): 1274-1278.
Citation: Jian Wei, Shen Yue-hong, Li Yi. Pulse-Shaping Based on Generalized Gabor Transform for Optimal LOFDM System[J]. Journal of Electronics & Information Technology, 2006, 28(7): 1274-1278.

Pulse-Shaping Based on Generalized Gabor Transform for Optimal LOFDM System

  • Received Date: 2004-11-15
  • Rev Recd Date: 2005-03-28
  • Publish Date: 2006-07-19
  • Lattice Orthogonal Frequency Division Multiplexing(LOFDM) is a promising technique for high data-rate transmission in double(namely time-frequency) dispersive channel. But, as pulse shaping filters of LOFDM system is badly-localized, it is certainty that ISI and/or ICI be introduced. Therefore, design of pulse shaping filters is an important task for design of optimal LOFDM system. Currently, Strohmer and Beaver(2001, 2003) present an approach to design of pulse shaping filters for optimal LOFDM systems, but, it is computatively complex. In this paper, a generalized Gabor transform is proposed. Utilizing an approach of attained generalized tight Gabor atoms, the time-frequency well-localized pulse shaping filters can be designed for optimal LOFDM system. It is showed through theory analysis and simulative experiment that this method is more efficient and simpler than that of Strohmer and Beaver(2001, 2003).
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  • Strohmer T, Beaver S. Optimal OFDM system design through optimal sphere coverings. Proc. IEEE Int. Conf. Acoustic, Speech, and Signal Processing 2001, Salt Lake city, USA, 2001, 4: 23732376. .[2]Strohmer T, Beaver S. Optimal OFDM design for time.frequency dispersive channels. IEEE Trans. on Commun., 2003, 51(7): 11111122..[3]Bolcskei H. Efficient design of pulse shaping filters for OFDM systems. SPIE Proc. 1999, Denver USA, July 1999, Vol.3813: 625636. .[4]Bolcskei H. Orthogonal frequency division multiplexing based on offset QAM, in Advances in Gabor Analysis, Feichtinger H G, Strohmer T. Boston: Birkhauser, 2002, Ch12.[5]Bolcskei H, Duhamel P, Hleiss R. Design of pulse shaping OFDM/OQAM systems for high data-rate transmission over wireless channels. IEEE International Conference on Communications乫99, Vancouver, Canada, July 1999, vol.1: 559564. .[6]Feichtinger H G, Strobmer T. Gabor Analysis and Algorithms. Boston: Birkhauser, 1998丗Ch1, Ch 8.[7]Qiu Sigang. The undersampled discrete Gabor transform. IEEE Trans. on Signal Processing, 1998, 46(5) : 12211228. .[8].... 旕暯.怣崋暘愅梌.棟. 杒嫗丗崙杊岺.弌斉幮丆1998, 戞2, 4復.[9]墹岹鈀. 旕暯.悘婘怣崋暘愅梌.棟. 杒嫗丗崙杊岺.弌斉幮丆1999, 戞1, 4復.[10]Janssen A J E M, Strohmer T. Characterization and computation of canonical tight windows for Gabor frames[J].J. Fourier. Anal. Appl.2002, 8(1):1-[11]Qiu sigang, Feichtinger H G. Discrete Gabor structures and optical representations[J].IEEE Trans. on Signal Processing.1995, 43(10):2258-
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