A New Approach for PAPR Reduction of OFDM Signal Based on Signal Scrambling

Abstract

Orthogonal Frequency Division Multiplexing (OFDM) is an attractive and promising technique for fourth generation wireless communication. In general, the High Peak-to-Average Power Ratio (PAPR) of transmitted signals for OFDM systems reduces the system efficiency and hence increases the cost of the Radio Frequency (RF) power amplifier. In this paper, we propose a distortion-less PAPR reduction schemes for multi-carrier system. The new schemes combine both the Partial Transmit Sequence (PTS) and the Selected Mapping (SLM) techniques. The performance of the new schemes is measured using the Complementary Cumulative Distribution Function (CCDF) of the PAPR. The simulation results show that the two new combined schemes have a better PAPR performances compared to PTS and SLM. On the other hand, the price paid is a slight increase in the system complexity, as well as the side information transmitted.

Keywords

• Orthogonal Frequency Division Multiplexing (OFDM); Peak-to-Average Power Ratio (PAPR); Concatenate Parallel Selected Mapping (C-PSLM); Concatenate Hybrid Parallel Selected Mapping (C-HPSLM); Complementary Cumulative Distribution Function (CCDF).

Original Research Paper

Öz

References

1. R. Van Nee and R. Prasad, “OFDM for Wireless Multimedia Communications”, Artech House, Boston, Mass, USA, 2000.
2. Y. Rahmatallah and S. Mohan, "Peak-to-average power ratio reduction in OFDM systems: A Survey and Taxonomy," IEEE Comm. Surveys & Tutorials, vol. 15, no. 4, pp. 1567-1592, Fourth Quarter 2013.
3. S. Han and J. Lee, “An Overview of Peak-To-Average Power Ratio Reduction Techniques for Multicarrier Transmission,” IEEE Wireless Communications, vol. 12, no. 2, pp. 56–65, Apr. 2005.
4. T. Jiang and Y. Wu, "An Overview: Peak to-Average Power Ratio Reduction Techniques for OFDM Signals," Broadcasting, IEEE Transactions on, vo1. 54, no. 2, pp. 257-268, June 2008.
5. R. O’Neill and L.B. Lopes, “Envelope Variations and Spectral Splatter in Clipped Multicarrier Signals,” IEEE conference proceedings PIMRC’95, Toronto, Ont., pp. 71-76, 27-29 Sep. 1995.
6. X. Li and L. J. Cimini, “Effect of Clipping and Filtering on the Performance of OFDM,” IEEE Comm. Lett. , Vol. 2, no. 5, pp. 131–133, May 1998.
7. M. Pauli and H.P. Kuchenbecker, “On the reduction of the out of band radiation of OFDM signals,” IEEE conference proceedings ICC 98, Atlanta, GA, Vol. 3, pp. 1304-1308, 7-11 Jun. 1998.
8. H. Xiao, L. Jianhua, Z. Junli, J. Chuang, and G. Jun, “Reduction of peak-to-average power ratio of OFDM signals with companding transform,” IEE Electronic Letters, vol. 37, no. 8, pp. 506–507, April 2001.

9. R. W. Bäuml, R. F. H. Fisher, and J. B. Huber, “Reducing the Peak-to-Average Power Ratio of Multicarrier Modulation by Selected Mapping,” Elect. Lett., vol. 32, no. 22, pp. 2056–2057, Oct. 1996.
10. S. H. Müller and J. B. Huber, “A Novel Peak Power Reduction Scheme for OFDM,” Proc. IEEE PIMRC '97, Helsinki, Finland, pp. 1090–1094, 1-4 Sept. 1997.
11. J. Tellado, Peak to Average Power Reduction for Multicarrier Modulation, Ph.D. dissertation, 2000: Stanford University.
12. J. Tellado and J. M. Cioffi, "Efficient algorithms for reducing PAR in multicarrier systems," Proc. IEEE Int. Symp. Information Theory, Cambridge, MA, pp.191, 16-21 Aug. 1998.
13. S. H. Müller and J. B. Huber, “OFDM with Reduced Peak–to–Average Power Ratio by Optimum Combination of Partial Transmit Sequences,” Elect. Lett., vol. 33, no. 5, pp. 368–369, Feb. 1997.
14. L. J. Cimini, Jr. and N. R. Sollenberger, “Peak-to-Aver-age Power Ratio Reduction of an OFDM Signal Using Partial Transmit Sequences,” IEEE Communications Letter, vol.4, no. 3, pp. 86-88, March 2000.
15. L. Xun, Wang, K. Yang, and B. Xu. "Using the union algorithm of SLM and PTS to reduce PAPR in OFDM system," 2009 ISECS International Colloquium on Computing, Communication, Control, and Management. Vol. 4, Sanya, China, pp. 511-513, 8-9 Aug. 2009.