Cover
Vol. 10 No. 1 (2010)

Published: June 30, 2010

Pages: 13-22

Original Article

Proposed Algorithm of Tone Reservation PAPR Reduction in OFDM System

Abstract

Orthogonal frequency division multiplexing (OFDM) has become a popular modulation method in high-speed wireless communication systems due to its high data rate transmission capability and robustness against multipath fading effects. One of the major drawbacks of OFDM at the transmitter side is the high peak-to-avenge power ratio (PAPR) of the OFJ)M signal. In this paper, an algorithm is proposed to reduce the peak-to-average power ratio of OFDM signal with a large number of sub-carriers. This algorithm is based on the tone reservation method. The computer simulation tests show that the suggested algorithm reduces the PAPR to a factor of S.2S dB and needs less number of iterations as compared with the traditional tone reservation algorithm.

References

  1. K. Fazel, and S. Kaiser, "Multi-Carrier and Spread Spectrum Systems", John Wiley & Sons Ltd, 2003.
  2. N. Morinaga, R. Kohno, and S. Sampei, "Wireless Communication Technologies New Multimedia Systems", Kluwer Academic Publishers, 2002.
  3. S. H. Muller, R. W. Bauml, R. F. H. Fischer, and J. B. Huber, "OFDM With Reduction Peak-to-Average Power Ratio By Multiple Signal Representation", In Annals of Telecommunications, vol. 52, no. 1 & 2, pp. 58-67, February 1997.
  4. M. J. Fernandez, J. M. Bradllo and O. Edfors, "Orthogonal Pilot Sequences for Peak-to-Average Power Reduction in OFDM", Proceedings of IST Mobile Summit, 2000.
  5. D. Farnese, "Technique for Peak Power Reduction in OFDM Systems", M.Sc. Thesis, Chalmers University of Technology, 1998.
  6. A. Vallavaraj, B. Stewart, D. Harrison and F. McIntosh, "Reduction Of Peak to Average Power Ratio of OFDM Symbols Using Phasing Schemes Combined with Companding", 3rd IEEE-GCC, Bahrain, March 2006.
  7. X. Huang, J. Lu, J. Chang and J. Zheng, "Companding Transform of the Reduction of Peak to Average Power Ratio of OFDM Signals", Proc. IEEE VTC, pp. 835-839, 2001.
  8. J. Tellado, "Peak to Average Power Ratio Reduction", Ph.D. thesis, Stanford University, September 1999.
  9. W. Henkel, and V. Zruo, "PAR Reduction Revisited: an Extension to Tellado's Method", Telecommunications Research Center Vienna (FTW), 6th International OFDM-Workshop (InOWo), Hamburg, 2000.