One of main disadvantage of OFDM is high peak-to-average power ratio (PAPR). In this paper, two effective PAPR reduction schemes are proposed. These techniques combine DCT and SLM techniques. The scheme 1 is composed of the DCT followed by SLM technique, and the DCT is used followed by conventional SLM in proposed scheme 2. Simulation results show that the proposed schemes can obtain significant PAPR reduction performance with that of ordinary SLM techniques.
References
[1]
R. W. Bauml, R. F. Fischer and J. B. Huber, “Reducing the Peak-to-Average Power Ration of Multicarrier Modulation by Selected Mapping,” Electronics Letters, Vol. 32, No. 22, 1996, pp. 2050-2057.
[2]
S. H. Muller and J. B. Huber, “OFDM with Reduced Peak to Average Power Ratio by Optimum Combination of Partial Transmit Sequences,” IEEE Electronics Letters, Vol. 33, No. 5, 1997, pp. 368-369.
[3]
M. Park, J. Heeyong, J. Cho, N. Cho, D. Hong and C. Kang, “PAPR Reduction in OFDM Transmission Using Hadamard Transform,” IEEE International Conference on Communications, Vol. 1, June 2000, pp. 430-433.
[4]
T. Jiang and Y. Wu, “An Overview: Peak-to-Average Power Ratio Reduction Techniques for OFDM Signals,” IEEE Transactions on Broadcasting, Vol. 54, No. 2, June 2008, pp. 257-268.
[5]
S. H. Han and J. H. Lee, “An Overview of Peak-to-Average Power Ratio Reduction Techniques for Multicarrier Transmission,” IEEE Transactions on Wireless Communications, Vol. 12, No. 2, April 2005, pp. 56-65.
[6]
A. Zolghadrasli and M. H. Ghamat, “An Overview of PAPR Reduction Techniques for Multicarrier Transmission and Propose of New Techniques for PAPR Reduction,” Iranian Journal of Electrical and Computer Engineering, Vol. 7, No. 2, Summer-Fall 2008, pp. 115-120.
[7]
N. V. Irukulapati, V. K. Chaka and A. Jain, “SLM Based PAPR Reduction of OFDM Signal Using New Phase Sequence,” Electronics Letters, Vol. 45, No. 24, 2009, pp. 1231-1232.
[8]
N. T. Ahmed, Natarajan and K. R. Rao, “Discrete Consine Transform,” IEEE Transactions on Computer, Vol. 23, 1974, pp. 90-93.
