Phase factor sequences algorithm in partial transmit sequence

Abstract

Partial transmit sequence (PTS) is a promising technique for peak-to-average power ratio (PAPR) reduction in orthogonal frequency division multiplexing (OFDM). While in optimal PTS, an exhaustive search for all combinations of phase factor sequences is required, this results in huge computation. In this paper, by introducing the orthogonal design, a phase factor sequences algorithm is proposed. The algorithm uses orthogonal table to generate phase factor sequences, and the regular PAPR computation result is then followed by the parameter estimation. The simulation result shows that the proposed algorithm reduces the computation notably and obtains a good PAPR performance approaching the optimal PTS.

Keywords

orthogonal frequency division multiplexing (OFDM) / peak-to-average power ratio (PAPR) / partial transmit sequence (PTS) / orthogonal design

References

[1] Wang X., Tjhung T. T., Ng C. S. Reduction of peak-toaverage power ratio of OFDM system using a companding technique[J]. IEEE Transactions on Broadcasting, 1999, 45(3): 303-307.

[2] Huang X., Lu J., Zheng J., et al. Companding transform for reduction in peak-to-average power ratio of OFDM signals[J]. IEEE Transactions on Wireless Com munication, 2004, 3(6): 2030-2039.

[3] Davis J. A., Jedwab J. Peak-to-mean power control in OFDM, Golay complementary sequences and Reed-Muller codes[J]. IEEE Transactions on Information Theory, 1999, 45(7): 2397 2417

[4] Bauml R. W., Fischer R. F. H., Huber J. B. Reducing the peakto-average power ratio of multicarrier modulation by selected mapping[J]. Electronics Letters, 1996, 32(22): 2056-2057.

[5] Muller S. H., Huber J. B. OFDM with reduced peak-toaverage power ratio by optimum combination of partial transmit sequence[J]. Electronics Letters, 1997, 33(2): 368-369.

[6] Alavi A., Tellambura C., Fair I. PAPR reduction of OFDM signals using partial transmit sequence: An optimal approach using sphere decoding[J]. IEEE Communication Letters, 2005, 9(11): 982-984.

[7] Yang L., Chen R. S., Siu Y. M., et al. PAPR reduction of an OFDM signal by use of PTS with low computational complexity[J]. IEEE Transactions on Broadcasting, 2006, 52(1): 83-86.

[8] Cimini L. J., Sollenberge N. R. Peak-to-average power ratio reduction of an OFDM signal using partial transmit sequences[J]. IEEE Communication Letters, 2000, 4(3): 86-88.

[9] Dey A., Mukerjee R. Fractional Factorial Plans[M]. 1999, New York: John Wiley.

[10] Tong Z. G., Liang P. Optimality condition for selected mapping in OFDM[J]. IEEE Transactions on Signal Processing, 2006, 54(8): 3159-3165.

[11] Neil J A Sloane. Home Page [EB/OL]. http://www.research.att.com/:_njas/. 2007-07-28.

[12] Fang K., Ma C. Orthogonal and Uniform Experiment Design[M]. 2001, Beijing: Science Press.